/* Tree inlining.
- Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
- Free Software Foundation, Inc.
+ Copyright 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011,
+ 2012 Free Software Foundation, Inc.
Contributed by Alexandre Oliva <aoliva@redhat.com>
This file is part of GCC.
#include "system.h"
#include "coretypes.h"
#include "tm.h"
-#include "toplev.h"
+#include "diagnostic-core.h"
#include "tree.h"
#include "tree-inline.h"
-#include "rtl.h"
-#include "expr.h"
#include "flags.h"
#include "params.h"
#include "input.h"
#include "insn-config.h"
-#include "varray.h"
#include "hashtab.h"
#include "langhooks.h"
#include "basic-block.h"
#include "tree-mudflap.h"
#include "tree-flow.h"
#include "function.h"
-#include "ggc.h"
#include "tree-flow.h"
-#include "diagnostic.h"
+#include "tree-pretty-print.h"
#include "except.h"
#include "debug.h"
#include "pointer-set.h"
#include "target.h"
#include "integrate.h"
+#include "rtl.h" /* FIXME: For asm_str_count. */
+
/* I'm not real happy about this, but we need to handle gimple and
non-gimple trees. */
#include "gimple.h"
MODIFY_EXPRs that store to a dedicated returned-value variable.
The duplicated eh_region info of the copy will later be appended
to the info for the caller; the eh_region info in copied throwing
- statements and RESX_EXPRs is adjusted accordingly.
+ statements and RESX statements are adjusted accordingly.
Cloning: (only in C++) We have one body for a con/de/structor, and
multiple function decls, each with a unique parameter list.
calls? */
-/* Weights that estimate_num_insns uses for heuristics in inlining. */
-
-eni_weights eni_inlining_weights;
-
/* Weights that estimate_num_insns uses to estimate the size of the
produced code. */
/* Prototypes. */
-static tree declare_return_variable (copy_body_data *, tree, tree, tree *);
-static bool inlinable_function_p (tree);
+static tree declare_return_variable (copy_body_data *, tree, tree, basic_block);
static void remap_block (tree *, copy_body_data *);
-static tree remap_decls (tree, copy_body_data *);
static void copy_bind_expr (tree *, int *, copy_body_data *);
static tree mark_local_for_remap_r (tree *, int *, void *);
static void unsave_expr_1 (tree);
static tree unsave_r (tree *, int *, void *);
static void declare_inline_vars (tree, tree);
static void remap_save_expr (tree *, void *, int *);
-static void add_lexical_block (tree current_block, tree new_block);
+static void prepend_lexical_block (tree current_block, tree new_block);
static tree copy_decl_to_var (tree, copy_body_data *);
static tree copy_result_decl_to_var (tree, copy_body_data *);
static tree copy_decl_maybe_to_var (tree, copy_body_data *);
static gimple remap_gimple_stmt (gimple, copy_body_data *);
+static bool delete_unreachable_blocks_update_callgraph (copy_body_data *id);
/* Insert a tree->tree mapping for ID. Despite the name suggests
that the trees should be variables, it is used for more than that. */
*pointer_map_insert (id->decl_map, value) = value;
}
+/* Insert a tree->tree mapping for ID. This is only used for
+ variables. */
+
+static void
+insert_debug_decl_map (copy_body_data *id, tree key, tree value)
+{
+ if (!gimple_in_ssa_p (id->src_cfun))
+ return;
+
+ if (!MAY_HAVE_DEBUG_STMTS)
+ return;
+
+ if (!target_for_debug_bind (key))
+ return;
+
+ gcc_assert (TREE_CODE (key) == PARM_DECL);
+ gcc_assert (TREE_CODE (value) == VAR_DECL);
+
+ if (!id->debug_map)
+ id->debug_map = pointer_map_create ();
+
+ *pointer_map_insert (id->debug_map, key) = value;
+}
+
+/* If nonzero, we're remapping the contents of inlined debug
+ statements. If negative, an error has occurred, such as a
+ reference to a variable that isn't available in the inlined
+ context. */
+static int processing_debug_stmt = 0;
+
/* Construct new SSA name for old NAME. ID is the inline context. */
static tree
if (n)
return unshare_expr (*n);
+ if (processing_debug_stmt)
+ {
+ if (TREE_CODE (SSA_NAME_VAR (name)) == PARM_DECL
+ && SSA_NAME_IS_DEFAULT_DEF (name)
+ && id->entry_bb == NULL
+ && single_succ_p (ENTRY_BLOCK_PTR))
+ {
+ tree vexpr = make_node (DEBUG_EXPR_DECL);
+ gimple def_temp;
+ gimple_stmt_iterator gsi;
+ tree val = SSA_NAME_VAR (name);
+
+ n = (tree *) pointer_map_contains (id->decl_map, val);
+ if (n != NULL)
+ val = *n;
+ if (TREE_CODE (val) != PARM_DECL)
+ {
+ processing_debug_stmt = -1;
+ return name;
+ }
+ def_temp = gimple_build_debug_source_bind (vexpr, val, NULL);
+ DECL_ARTIFICIAL (vexpr) = 1;
+ TREE_TYPE (vexpr) = TREE_TYPE (name);
+ DECL_MODE (vexpr) = DECL_MODE (SSA_NAME_VAR (name));
+ gsi = gsi_after_labels (single_succ (ENTRY_BLOCK_PTR));
+ gsi_insert_before (&gsi, def_temp, GSI_SAME_STMT);
+ return vexpr;
+ }
+
+ processing_debug_stmt = -1;
+ return name;
+ }
+
/* Do not set DEF_STMT yet as statement is not copied yet. We do that
in copy_bb. */
new_tree = remap_decl (SSA_NAME_VAR (name), id);
/* We might've substituted constant or another SSA_NAME for
- the variable.
+ the variable.
Replace the SSA name representing RESULT_DECL by variable during
inlining: this saves us from need to introduce PHI node in a case
&& (TREE_CODE (SSA_NAME_VAR (name)) != RESULT_DECL
|| !id->transform_return_to_modify))
{
+ struct ptr_info_def *pi;
new_tree = make_ssa_name (new_tree, NULL);
insert_decl_map (id, name, new_tree);
SSA_NAME_OCCURS_IN_ABNORMAL_PHI (new_tree)
= SSA_NAME_OCCURS_IN_ABNORMAL_PHI (name);
TREE_TYPE (new_tree) = TREE_TYPE (SSA_NAME_VAR (new_tree));
+ /* At least IPA points-to info can be directly transferred. */
+ if (id->src_cfun->gimple_df
+ && id->src_cfun->gimple_df->ipa_pta
+ && (pi = SSA_NAME_PTR_INFO (name))
+ && !pi->pt.anything)
+ {
+ struct ptr_info_def *new_pi = get_ptr_info (new_tree);
+ new_pi->pt = pi->pt;
+ }
if (gimple_nop_p (SSA_NAME_DEF_STMT (name)))
{
/* By inlining function having uninitialized variable, we might
regions of the CFG, but this is expensive to test. */
if (id->entry_bb
&& is_gimple_reg (SSA_NAME_VAR (name))
+ && SSA_NAME_OCCURS_IN_ABNORMAL_PHI (name)
&& TREE_CODE (SSA_NAME_VAR (name)) != PARM_DECL
&& (id->entry_bb != EDGE_SUCC (ENTRY_BLOCK_PTR, 0)->dest
|| EDGE_COUNT (id->entry_bb->preds) != 1))
{
gimple_stmt_iterator gsi = gsi_last_bb (id->entry_bb);
gimple init_stmt;
-
- init_stmt = gimple_build_assign (new_tree,
- fold_convert (TREE_TYPE (new_tree),
- integer_zero_node));
+ tree zero = build_zero_cst (TREE_TYPE (new_tree));
+
+ init_stmt = gimple_build_assign (new_tree, zero);
gsi_insert_after (&gsi, init_stmt, GSI_NEW_STMT);
SSA_NAME_IS_DEFAULT_DEF (new_tree) = 0;
}
remap_decl (tree decl, copy_body_data *id)
{
tree *n;
- tree fn;
/* We only remap local variables in the current function. */
- fn = id->src_fn;
/* See if we have remapped this declaration. */
n = (tree *) pointer_map_contains (id->decl_map, decl);
+ if (!n && processing_debug_stmt)
+ {
+ processing_debug_stmt = -1;
+ return decl;
+ }
+
/* If we didn't already have an equivalent for this declaration,
create one now. */
if (!n)
{
/* Make a copy of the variable or label. */
tree t = id->copy_decl (decl, id);
-
+
/* Remember it, so that if we encounter this local entity again
we can reuse this copy. Do this early because remap_type may
need this decl for TYPE_STUB_DECL. */
walk_tree (&DECL_QUALIFIER (t), copy_tree_body_r, id, NULL);
}
- if (cfun && gimple_in_ssa_p (cfun)
- && (TREE_CODE (t) == VAR_DECL
- || TREE_CODE (t) == RESULT_DECL || TREE_CODE (t) == PARM_DECL))
- {
- tree def = gimple_default_def (id->src_cfun, decl);
- get_var_ann (t);
- if (TREE_CODE (decl) != PARM_DECL && def)
- {
- tree map = remap_ssa_name (def, id);
- /* Watch out RESULT_DECLs whose SSA names map directly
- to them. */
- if (TREE_CODE (map) == SSA_NAME
- && gimple_nop_p (SSA_NAME_DEF_STMT (map)))
- set_default_def (t, map);
- }
- add_referenced_var (t);
- }
+ if ((TREE_CODE (t) == VAR_DECL
+ || TREE_CODE (t) == RESULT_DECL
+ || TREE_CODE (t) == PARM_DECL)
+ && id->src_fn && DECL_STRUCT_FUNCTION (id->src_fn)
+ && gimple_referenced_vars (DECL_STRUCT_FUNCTION (id->src_fn))
+ /* We don't want to mark as referenced VAR_DECLs that were
+ not marked as such in the src function. */
+ && (TREE_CODE (decl) != VAR_DECL
+ || referenced_var_lookup (DECL_STRUCT_FUNCTION (id->src_fn),
+ DECL_UID (decl))))
+ add_referenced_var (t);
return t;
}
- return unshare_expr (*n);
+ if (id->do_not_unshare)
+ return *n;
+ else
+ return unshare_expr (*n);
}
static tree
new_tree = build_pointer_type_for_mode (remap_type (TREE_TYPE (type), id),
TYPE_MODE (type),
TYPE_REF_CAN_ALIAS_ALL (type));
+ if (TYPE_ATTRIBUTES (type) || TYPE_QUALS (type))
+ new_tree = build_type_attribute_qual_variant (new_tree,
+ TYPE_ATTRIBUTES (type),
+ TYPE_QUALS (type));
insert_decl_map (id, type, new_tree);
return new_tree;
}
new_tree = build_reference_type_for_mode (remap_type (TREE_TYPE (type), id),
TYPE_MODE (type),
TYPE_REF_CAN_ALIAS_ALL (type));
+ if (TYPE_ATTRIBUTES (type) || TYPE_QUALS (type))
+ new_tree = build_type_attribute_qual_variant (new_tree,
+ TYPE_ATTRIBUTES (type),
+ TYPE_QUALS (type));
insert_decl_map (id, type, new_tree);
return new_tree;
}
{
tree f, nf = NULL;
- for (f = TYPE_FIELDS (new_tree); f ; f = TREE_CHAIN (f))
+ for (f = TYPE_FIELDS (new_tree); f ; f = DECL_CHAIN (f))
{
t = remap_decl (f, id);
DECL_CONTEXT (t) = new_tree;
- TREE_CHAIN (t) = nf;
+ DECL_CHAIN (t) = nf;
nf = t;
}
TYPE_FIELDS (new_tree) = nreverse (nf);
return tmp;
}
+/* Return previously remapped type of TYPE in ID. Return NULL if TYPE
+ is NULL or TYPE has not been remapped before. */
+
static tree
-remap_decls (tree decls, copy_body_data *id)
+remapped_type (tree type, copy_body_data *id)
+{
+ tree *node;
+
+ if (type == NULL)
+ return type;
+
+ /* See if we have remapped this type. */
+ node = (tree *) pointer_map_contains (id->decl_map, type);
+ if (node)
+ return *node;
+ else
+ return NULL;
+}
+
+ /* The type only needs remapping if it's variably modified. */
+/* Decide if DECL can be put into BLOCK_NONLOCAL_VARs. */
+
+static bool
+can_be_nonlocal (tree decl, copy_body_data *id)
+{
+ /* We can not duplicate function decls. */
+ if (TREE_CODE (decl) == FUNCTION_DECL)
+ return true;
+
+ /* Local static vars must be non-local or we get multiple declaration
+ problems. */
+ if (TREE_CODE (decl) == VAR_DECL
+ && !auto_var_in_fn_p (decl, id->src_fn))
+ return true;
+
+ /* At the moment dwarf2out can handle only these types of nodes. We
+ can support more later. */
+ if (TREE_CODE (decl) != VAR_DECL && TREE_CODE (decl) != PARM_DECL)
+ return false;
+
+ /* We must use global type. We call remapped_type instead of
+ remap_type since we don't want to remap this type here if it
+ hasn't been remapped before. */
+ if (TREE_TYPE (decl) != remapped_type (TREE_TYPE (decl), id))
+ return false;
+
+ /* Wihtout SSA we can't tell if variable is used. */
+ if (!gimple_in_ssa_p (cfun))
+ return false;
+
+ /* Live variables must be copied so we can attach DECL_RTL. */
+ if (var_ann (decl))
+ return false;
+
+ return true;
+}
+
+static tree
+remap_decls (tree decls, VEC(tree,gc) **nonlocalized_list, copy_body_data *id)
{
tree old_var;
tree new_decls = NULL_TREE;
/* Remap its variables. */
- for (old_var = decls; old_var; old_var = TREE_CHAIN (old_var))
+ for (old_var = decls; old_var; old_var = DECL_CHAIN (old_var))
{
tree new_var;
- /* We cannot chain the local static declarations into the local_decls
- as we can't duplicate them or break one decl rule. Go ahead
- and link them into local_decls. */
-
- if (!auto_var_in_fn_p (old_var, id->src_fn)
- && !DECL_EXTERNAL (old_var))
+ if (can_be_nonlocal (old_var, id))
{
- cfun->local_decls = tree_cons (NULL_TREE, old_var,
- cfun->local_decls);
+ if (TREE_CODE (old_var) == VAR_DECL
+ && ! DECL_EXTERNAL (old_var)
+ && (var_ann (old_var) || !gimple_in_ssa_p (cfun)))
+ add_local_decl (cfun, old_var);
+ if ((!optimize || debug_info_level > DINFO_LEVEL_TERSE)
+ && !DECL_IGNORED_P (old_var)
+ && nonlocalized_list)
+ VEC_safe_push (tree, gc, *nonlocalized_list, old_var);
continue;
}
/* If we didn't remap this variable, we can't mess with its
TREE_CHAIN. If we remapped this variable to the return slot, it's
already declared somewhere else, so don't declare it here. */
- if (!new_var || new_var == id->retvar)
+
+ if (new_var == id->retvar)
;
+ else if (!new_var)
+ {
+ if ((!optimize || debug_info_level > DINFO_LEVEL_TERSE)
+ && !DECL_IGNORED_P (old_var)
+ && nonlocalized_list)
+ VEC_safe_push (tree, gc, *nonlocalized_list, old_var);
+ }
else
{
gcc_assert (DECL_P (new_var));
- TREE_CHAIN (new_var) = new_decls;
+ DECL_CHAIN (new_var) = new_decls;
new_decls = new_var;
+
+ /* Also copy value-expressions. */
+ if (TREE_CODE (new_var) == VAR_DECL
+ && DECL_HAS_VALUE_EXPR_P (new_var))
+ {
+ tree tem = DECL_VALUE_EXPR (new_var);
+ bool old_regimplify = id->regimplify;
+ id->remapping_type_depth++;
+ walk_tree (&tem, copy_tree_body_r, id, NULL);
+ id->remapping_type_depth--;
+ id->regimplify = old_regimplify;
+ SET_DECL_VALUE_EXPR (new_var, tem);
+ }
}
}
{
tree old_block;
tree new_block;
- tree fn;
/* Make the new block. */
old_block = *block;
TREE_USED (new_block) = TREE_USED (old_block);
BLOCK_ABSTRACT_ORIGIN (new_block) = old_block;
BLOCK_SOURCE_LOCATION (new_block) = BLOCK_SOURCE_LOCATION (old_block);
+ BLOCK_NONLOCALIZED_VARS (new_block)
+ = VEC_copy (tree, gc, BLOCK_NONLOCALIZED_VARS (old_block));
*block = new_block;
/* Remap its variables. */
- BLOCK_VARS (new_block) = remap_decls (BLOCK_VARS (old_block), id);
-
- fn = id->dst_fn;
+ BLOCK_VARS (new_block) = remap_decls (BLOCK_VARS (old_block),
+ &BLOCK_NONLOCALIZED_VARS (new_block),
+ id);
if (id->transform_lang_insert_block)
id->transform_lang_insert_block (new_block);
remap_block (&new_tree, id);
gcc_assert (new_tree != block);
for (t = BLOCK_SUBBLOCKS (block); t ; t = BLOCK_CHAIN (t))
- add_lexical_block (new_tree, remap_blocks (t, id));
+ prepend_lexical_block (new_tree, remap_blocks (t, id));
+ /* Blocks are in arbitrary order, but make things slightly prettier and do
+ not swap order when producing a copy. */
+ BLOCK_SUBBLOCKS (new_tree) = blocks_nreverse (BLOCK_SUBBLOCKS (new_tree));
return new_tree;
}
new_tree = alloc_stmt_list ();
ni = tsi_start (new_tree);
oi = tsi_start (*tp);
+ TREE_TYPE (new_tree) = TREE_TYPE (*tp);
*tp = new_tree;
for (; !tsi_end_p (oi); tsi_next (&oi))
- tsi_link_after (&ni, tsi_stmt (oi), TSI_NEW_STMT);
+ {
+ tree stmt = tsi_stmt (oi);
+ if (TREE_CODE (stmt) == STATEMENT_LIST)
+ /* This copy is not redundant; tsi_link_after will smash this
+ STATEMENT_LIST into the end of the one we're building, and we
+ don't want to do that with the original. */
+ copy_statement_list (&stmt);
+ tsi_link_after (&ni, stmt, TSI_CONTINUE_LINKING);
+ }
}
static void
if (BIND_EXPR_VARS (*tp))
/* This will remap a lot of the same decls again, but this should be
harmless. */
- BIND_EXPR_VARS (*tp) = remap_decls (BIND_EXPR_VARS (*tp), id);
+ BIND_EXPR_VARS (*tp) = remap_decls (BIND_EXPR_VARS (*tp), NULL, id);
}
/* Create a new gimple_seq by remapping all the statements in BODY
using the inlining information in ID. */
-gimple_seq
+static gimple_seq
remap_gimple_seq (gimple_seq body, copy_body_data *id)
{
gimple_stmt_iterator si;
harmless. */
new_vars = gimple_bind_vars (stmt);
if (new_vars)
- new_vars = remap_decls (new_vars, id);
+ new_vars = remap_decls (new_vars, NULL, id);
new_bind = gimple_build_bind (new_vars, new_body, new_block);
gcc_assert (new_decl);
/* Replace this variable with the copy. */
STRIP_TYPE_NOPS (new_decl);
+ /* ??? The C++ frontend uses void * pointer zero to initialize
+ any other type. This confuses the middle-end type verification.
+ As cloned bodies do not go through gimplification again the fixup
+ there doesn't trigger. */
+ if (TREE_CODE (new_decl) == INTEGER_CST
+ && !useless_type_conversion_p (TREE_TYPE (*tp), TREE_TYPE (new_decl)))
+ new_decl = fold_convert (TREE_TYPE (*tp), new_decl);
*tp = new_decl;
*walk_subtrees = 0;
}
{
/* Otherwise, just copy the node. Note that copy_tree_r already
knows not to copy VAR_DECLs, etc., so this is safe. */
- if (TREE_CODE (*tp) == INDIRECT_REF)
- {
- /* Get rid of *& from inline substitutions that can happen when a
- pointer argument is an ADDR_EXPR. */
- tree decl = TREE_OPERAND (*tp, 0);
- tree *n;
- n = (tree *) pointer_map_contains (id->decl_map, decl);
- if (n)
- {
- tree type, new_tree, old;
+ /* We should never have TREE_BLOCK set on non-statements. */
+ if (EXPR_P (*tp))
+ gcc_assert (!TREE_BLOCK (*tp));
- /* If we happen to get an ADDR_EXPR in n->value, strip
- it manually here as we'll eventually get ADDR_EXPRs
- which lie about their types pointed to. In this case
- build_fold_indirect_ref wouldn't strip the
- INDIRECT_REF, but we absolutely rely on that. As
- fold_indirect_ref does other useful transformations,
- try that first, though. */
- type = TREE_TYPE (TREE_TYPE (*n));
- new_tree = unshare_expr (*n);
- old = *tp;
- *tp = gimple_fold_indirect_ref (new_tree);
- if (!*tp)
- {
- if (TREE_CODE (new_tree) == ADDR_EXPR)
- {
- *tp = fold_indirect_ref_1 (type, new_tree);
- /* ??? We should either assert here or build
- a VIEW_CONVERT_EXPR instead of blindly leaking
- incompatible types to our IL. */
- if (! *tp)
- *tp = TREE_OPERAND (new_tree, 0);
- }
- else
- {
- *tp = build1 (INDIRECT_REF, type, new_tree);
- TREE_THIS_VOLATILE (*tp) = TREE_THIS_VOLATILE (old);
- }
- }
- *walk_subtrees = 0;
- return NULL;
- }
+ if (TREE_CODE (*tp) == MEM_REF)
+ {
+ tree ptr = TREE_OPERAND (*tp, 0);
+ tree type = remap_type (TREE_TYPE (*tp), id);
+ tree old = *tp;
+
+ /* We need to re-canonicalize MEM_REFs from inline substitutions
+ that can happen when a pointer argument is an ADDR_EXPR.
+ Recurse here manually to allow that. */
+ walk_tree (&ptr, remap_gimple_op_r, data, NULL);
+ *tp = fold_build2 (MEM_REF, type,
+ ptr, TREE_OPERAND (*tp, 1));
+ TREE_THIS_NOTRAP (*tp) = TREE_THIS_NOTRAP (old);
+ TREE_THIS_VOLATILE (*tp) = TREE_THIS_VOLATILE (old);
+ TREE_NO_WARNING (*tp) = TREE_NO_WARNING (old);
+ *walk_subtrees = 0;
+ return NULL;
}
/* Here is the "usual case". Copy this tree node, and then
tweak some special cases. */
copy_tree_r (tp, walk_subtrees, NULL);
+ if (TREE_CODE (*tp) != OMP_CLAUSE)
+ TREE_TYPE (*tp) = remap_type (TREE_TYPE (*tp), id);
+
/* Global variables we haven't seen yet need to go into referenced
vars. If not referenced from types only. */
if (gimple_in_ssa_p (cfun)
&& TREE_CODE (*tp) == VAR_DECL
- && id->remapping_type_depth == 0)
+ && id->remapping_type_depth == 0
+ && !processing_debug_stmt)
add_referenced_var (*tp);
- /* We should never have TREE_BLOCK set on non-statements. */
- if (EXPR_P (*tp))
- gcc_assert (!TREE_BLOCK (*tp));
-
- if (TREE_CODE (*tp) != OMP_CLAUSE)
- TREE_TYPE (*tp) = remap_type (TREE_TYPE (*tp), id);
-
if (TREE_CODE (*tp) == TARGET_EXPR && TREE_OPERAND (*tp, 3))
{
/* The copied TARGET_EXPR has never been expanded, even if the
else if (TREE_CODE (*tp) == ADDR_EXPR)
{
/* Variable substitution need not be simple. In particular,
- the INDIRECT_REF substitution above. Make sure that
+ the MEM_REF substitution above. Make sure that
TREE_CONSTANT and friends are up-to-date. But make sure
to not improperly set TREE_BLOCK on some sub-expressions. */
int invariant = is_gimple_min_invariant (*tp);
tree block = id->block;
id->block = NULL_TREE;
- walk_tree (&TREE_OPERAND (*tp, 0), copy_tree_body_r, id, NULL);
+ walk_tree (&TREE_OPERAND (*tp, 0), remap_gimple_op_r, data, NULL);
id->block = block;
-
- /* Handle the case where we substituted an INDIRECT_REF
- into the operand of the ADDR_EXPR. */
- if (TREE_CODE (TREE_OPERAND (*tp, 0)) == INDIRECT_REF)
- *tp = TREE_OPERAND (TREE_OPERAND (*tp, 0), 0);
- else
- recompute_tree_invariant_for_addr_expr (*tp);
+ recompute_tree_invariant_for_addr_expr (*tp);
/* If this used to be invariant, but is not any longer,
then regimplification is probably needed. */
}
else if (TREE_CODE (*tp) == STATEMENT_LIST)
copy_statement_list (tp);
- else if (TREE_CODE (*tp) == SAVE_EXPR)
+ else if (TREE_CODE (*tp) == SAVE_EXPR
+ || TREE_CODE (*tp) == TARGET_EXPR)
remap_save_expr (tp, id->decl_map, walk_subtrees);
else if (TREE_CODE (*tp) == LABEL_DECL
&& (! DECL_CONTEXT (*tp)
STRIP_TYPE_NOPS (value);
if (TREE_CONSTANT (value) || TREE_READONLY (value))
{
- *tp = build_empty_stmt ();
+ *tp = build_empty_stmt (EXPR_LOCATION (*tp));
return copy_tree_body_r (tp, walk_subtrees, data);
}
}
but we absolutely rely on that. As fold_indirect_ref
does other useful transformations, try that first, though. */
tree type = TREE_TYPE (TREE_TYPE (*n));
- new_tree = unshare_expr (*n);
+ if (id->do_not_unshare)
+ new_tree = *n;
+ else
+ new_tree = unshare_expr (*n);
old = *tp;
*tp = gimple_fold_indirect_ref (new_tree);
if (! *tp)
{
if (TREE_CODE (new_tree) == ADDR_EXPR)
{
- *tp = fold_indirect_ref_1 (type, new_tree);
+ *tp = fold_indirect_ref_1 (EXPR_LOCATION (new_tree),
+ type, new_tree);
/* ??? We should either assert here or build
a VIEW_CONVERT_EXPR instead of blindly leaking
incompatible types to our IL. */
*tp = build1 (INDIRECT_REF, type, new_tree);
TREE_THIS_VOLATILE (*tp) = TREE_THIS_VOLATILE (old);
TREE_SIDE_EFFECTS (*tp) = TREE_SIDE_EFFECTS (old);
+ TREE_READONLY (*tp) = TREE_READONLY (old);
+ TREE_THIS_NOTRAP (*tp) = TREE_THIS_NOTRAP (old);
}
}
*walk_subtrees = 0;
return NULL;
}
}
+ else if (TREE_CODE (*tp) == MEM_REF)
+ {
+ /* We need to re-canonicalize MEM_REFs from inline substitutions
+ that can happen when a pointer argument is an ADDR_EXPR. */
+ tree decl = TREE_OPERAND (*tp, 0);
+ tree *n;
+
+ n = (tree *) pointer_map_contains (id->decl_map, decl);
+ if (n)
+ {
+ tree old = *tp;
+ *tp = fold_build2 (MEM_REF, TREE_TYPE (*tp),
+ unshare_expr (*n), TREE_OPERAND (*tp, 1));
+ TREE_THIS_VOLATILE (*tp) = TREE_THIS_VOLATILE (old);
+ TREE_NO_WARNING (*tp) = TREE_NO_WARNING (old);
+ *walk_subtrees = 0;
+ return NULL;
+ }
+ }
/* Here is the "usual case". Copy this tree node, and then
tweak some special cases. */
copy_tree_r (tp, walk_subtrees, NULL);
/* Global variables we haven't seen yet needs to go into referenced
- vars. If not referenced from types only. */
+ vars. If not referenced from types or debug stmts only. */
if (gimple_in_ssa_p (cfun)
&& TREE_CODE (*tp) == VAR_DECL
- && id->remapping_type_depth == 0)
+ && id->remapping_type_depth == 0
+ && !processing_debug_stmt)
add_referenced_var (*tp);
-
+
/* If EXPR has block defined, map it to newly constructed block.
When inlining we want EXPRs without block appear in the block
- of function call. */
+ of function call if we are not remapping a type. */
if (EXPR_P (*tp))
{
- new_block = id->block;
+ new_block = id->remapping_type_depth == 0 ? id->block : NULL;
if (TREE_BLOCK (*tp))
{
tree *n;
n = (tree *) pointer_map_contains (id->decl_map,
TREE_BLOCK (*tp));
- gcc_assert (n);
- new_block = *n;
+ gcc_assert (n || id->remapping_type_depth != 0);
+ if (n)
+ new_block = *n;
}
TREE_BLOCK (*tp) = new_block;
}
- if (TREE_CODE (*tp) == RESX_EXPR && id->eh_region_offset)
- TREE_OPERAND (*tp, 0) =
- build_int_cst (NULL_TREE,
- id->eh_region_offset
- + TREE_INT_CST_LOW (TREE_OPERAND (*tp, 0)));
-
if (TREE_CODE (*tp) != OMP_CLAUSE)
TREE_TYPE (*tp) = remap_type (TREE_TYPE (*tp), id);
return NULL_TREE;
}
+/* Helper for remap_gimple_stmt. Given an EH region number for the
+ source function, map that to the duplicate EH region number in
+ the destination function. */
+
+static int
+remap_eh_region_nr (int old_nr, copy_body_data *id)
+{
+ eh_region old_r, new_r;
+ void **slot;
+
+ old_r = get_eh_region_from_number_fn (id->src_cfun, old_nr);
+ slot = pointer_map_contains (id->eh_map, old_r);
+ new_r = (eh_region) *slot;
+
+ return new_r->index;
+}
+
+/* Similar, but operate on INTEGER_CSTs. */
+
+static tree
+remap_eh_region_tree_nr (tree old_t_nr, copy_body_data *id)
+{
+ int old_nr, new_nr;
+
+ old_nr = tree_low_cst (old_t_nr, 0);
+ new_nr = remap_eh_region_nr (old_nr, id);
+
+ return build_int_cst (integer_type_node, new_nr);
+}
/* Helper for copy_bb. Remap statement STMT using the inlining
information in ID. Return the new statement copy. */
gimple copy = NULL;
struct walk_stmt_info wi;
tree new_block;
+ bool skip_first = false;
/* Begin by recognizing trees that we'll completely rewrite for the
inlining context. Our output for these trees is completely
If RETVAL is just the result decl, the result decl has
already been set (e.g. a recent "foo (&result_decl, ...)");
just toss the entire GIMPLE_RETURN. */
- if (retval && TREE_CODE (retval) != RESULT_DECL)
- copy = gimple_build_assign (id->retvar, retval);
+ if (retval
+ && (TREE_CODE (retval) != RESULT_DECL
+ && (TREE_CODE (retval) != SSA_NAME
+ || TREE_CODE (SSA_NAME_VAR (retval)) != RESULT_DECL)))
+ {
+ copy = gimple_build_assign (id->retvar, retval);
+ /* id->retvar is already substituted. Skip it on later remapping. */
+ skip_first = true;
+ }
else
return gimple_build_nop ();
}
case GIMPLE_TRY:
s1 = remap_gimple_seq (gimple_try_eval (stmt), id);
s2 = remap_gimple_seq (gimple_try_cleanup (stmt), id);
- copy = gimple_build_try (s1, s2, gimple_try_kind (stmt));
+ copy = gimple_build_try (s1, s2, gimple_try_kind (stmt));
break;
case GIMPLE_WITH_CLEANUP_EXPR:
(s1, gimple_omp_single_clauses (stmt));
break;
+ case GIMPLE_OMP_CRITICAL:
+ s1 = remap_gimple_seq (gimple_omp_body (stmt), id);
+ copy
+ = gimple_build_omp_critical (s1, gimple_omp_critical_name (stmt));
+ break;
+
+ case GIMPLE_TRANSACTION:
+ s1 = remap_gimple_seq (gimple_transaction_body (stmt), id);
+ copy = gimple_build_transaction (s1, gimple_transaction_label (stmt));
+ gimple_transaction_set_subcode (copy, gimple_transaction_subcode (stmt));
+ break;
+
default:
gcc_unreachable ();
}
}
}
+ if (gimple_debug_bind_p (stmt))
+ {
+ copy = gimple_build_debug_bind (gimple_debug_bind_get_var (stmt),
+ gimple_debug_bind_get_value (stmt),
+ stmt);
+ VEC_safe_push (gimple, heap, id->debug_stmts, copy);
+ return copy;
+ }
+ if (gimple_debug_source_bind_p (stmt))
+ {
+ copy = gimple_build_debug_source_bind
+ (gimple_debug_source_bind_get_var (stmt),
+ gimple_debug_source_bind_get_value (stmt), stmt);
+ VEC_safe_push (gimple, heap, id->debug_stmts, copy);
+ return copy;
+ }
+
/* Create a new deep copy of the statement. */
copy = gimple_copy (stmt);
+
+ /* Remap the region numbers for __builtin_eh_{pointer,filter},
+ RESX and EH_DISPATCH. */
+ if (id->eh_map)
+ switch (gimple_code (copy))
+ {
+ case GIMPLE_CALL:
+ {
+ tree r, fndecl = gimple_call_fndecl (copy);
+ if (fndecl && DECL_BUILT_IN_CLASS (fndecl) == BUILT_IN_NORMAL)
+ switch (DECL_FUNCTION_CODE (fndecl))
+ {
+ case BUILT_IN_EH_COPY_VALUES:
+ r = gimple_call_arg (copy, 1);
+ r = remap_eh_region_tree_nr (r, id);
+ gimple_call_set_arg (copy, 1, r);
+ /* FALLTHRU */
+
+ case BUILT_IN_EH_POINTER:
+ case BUILT_IN_EH_FILTER:
+ r = gimple_call_arg (copy, 0);
+ r = remap_eh_region_tree_nr (r, id);
+ gimple_call_set_arg (copy, 0, r);
+ break;
+
+ default:
+ break;
+ }
+
+ /* Reset alias info if we didn't apply measures to
+ keep it valid over inlining by setting DECL_PT_UID. */
+ if (!id->src_cfun->gimple_df
+ || !id->src_cfun->gimple_df->ipa_pta)
+ gimple_call_reset_alias_info (copy);
+ }
+ break;
+
+ case GIMPLE_RESX:
+ {
+ int r = gimple_resx_region (copy);
+ r = remap_eh_region_nr (r, id);
+ gimple_resx_set_region (copy, r);
+ }
+ break;
+
+ case GIMPLE_EH_DISPATCH:
+ {
+ int r = gimple_eh_dispatch_region (copy);
+ r = remap_eh_region_nr (r, id);
+ gimple_eh_dispatch_set_region (copy, r);
+ }
+ break;
+
+ default:
+ break;
+ }
}
/* If STMT has a block defined, map it to the newly constructed
gimple_set_block (copy, new_block);
+ if (gimple_debug_bind_p (copy) || gimple_debug_source_bind_p (copy))
+ return copy;
+
/* Remap all the operands in COPY. */
memset (&wi, 0, sizeof (wi));
wi.info = id;
- walk_gimple_op (copy, remap_gimple_op_r, &wi);
+ if (skip_first)
+ walk_tree (gimple_op_ptr (copy, 1), remap_gimple_op_r, &wi, NULL);
+ else
+ walk_gimple_op (copy, remap_gimple_op_r, &wi);
- /* We have to handle EH region remapping of GIMPLE_RESX specially because
- the region number is not an operand. */
- if (gimple_code (stmt) == GIMPLE_RESX && id->eh_region_offset)
+ /* Clear the copied virtual operands. We are not remapping them here
+ but are going to recreate them from scratch. */
+ if (gimple_has_mem_ops (copy))
{
- gimple_resx_set_region (copy, gimple_resx_region (stmt) + id->eh_region_offset);
+ gimple_set_vdef (copy, NULL_TREE);
+ gimple_set_vuse (copy, NULL_TREE);
}
+
return copy;
}
copy_bb (copy_body_data *id, basic_block bb, int frequency_scale,
gcov_type count_scale)
{
- gimple_stmt_iterator gsi, copy_gsi;
+ gimple_stmt_iterator gsi, copy_gsi, seq_gsi;
basic_block copy_basic_block;
tree decl;
+ gcov_type freq;
+ basic_block prev;
+
+ /* Search for previous copied basic block. */
+ prev = bb->prev_bb;
+ while (!prev->aux)
+ prev = prev->prev_bb;
/* create_basic_block() will append every new block to
basic_block_info automatically. */
copy_basic_block = create_basic_block (NULL, (void *) 0,
- (basic_block) bb->prev_bb->aux);
+ (basic_block) prev->aux);
copy_basic_block->count = bb->count * count_scale / REG_BR_PROB_BASE;
/* We are going to rebuild frequencies from scratch. These values
have just small importance to drive canonicalize_loop_headers. */
- copy_basic_block->frequency = ((gcov_type)bb->frequency
- * frequency_scale / REG_BR_PROB_BASE);
+ freq = ((gcov_type)bb->frequency * frequency_scale / REG_BR_PROB_BASE);
- if (copy_basic_block->frequency > BB_FREQ_MAX)
- copy_basic_block->frequency = BB_FREQ_MAX;
+ /* We recompute frequencies after inlining, so this is quite safe. */
+ if (freq > BB_FREQ_MAX)
+ freq = BB_FREQ_MAX;
+ copy_basic_block->frequency = freq;
copy_gsi = gsi_start_bb (copy_basic_block);
continue;
gimple_duplicate_stmt_histograms (cfun, stmt, id->src_cfun, orig_stmt);
+ seq_gsi = copy_gsi;
/* With return slot optimization we can end up with
non-gimple (foo *)&this->m, fix that here. */
&& !is_gimple_val (gimple_assign_rhs1 (stmt)))
{
tree new_rhs;
- new_rhs = force_gimple_operand_gsi (©_gsi,
- gimple_assign_rhs1 (stmt),
- true, NULL, true, GSI_SAME_STMT);
+ new_rhs = force_gimple_operand_gsi (&seq_gsi,
+ gimple_assign_rhs1 (stmt),
+ true, NULL, false,
+ GSI_CONTINUE_LINKING);
gimple_assign_set_rhs1 (stmt, new_rhs);
+ id->regimplify = false;
}
- else if (id->regimplify)
- gimple_regimplify_operands (stmt, ©_gsi);
- gsi_insert_after (©_gsi, stmt, GSI_NEW_STMT);
+ gsi_insert_after (&seq_gsi, stmt, GSI_NEW_STMT);
+
+ if (id->regimplify)
+ gimple_regimplify_operands (stmt, &seq_gsi);
+
+ /* If copy_basic_block has been empty at the start of this iteration,
+ call gsi_start_bb again to get at the newly added statements. */
+ if (gsi_end_p (copy_gsi))
+ copy_gsi = gsi_start_bb (copy_basic_block);
+ else
+ gsi_next (©_gsi);
/* Process the new statement. The call to gimple_regimplify_operands
possibly turned the statement into multiple statements, we
need to process all of them. */
- while (!gsi_end_p (copy_gsi))
+ do
{
+ tree fn;
+
+ stmt = gsi_stmt (copy_gsi);
if (is_gimple_call (stmt)
&& gimple_call_va_arg_pack_p (stmt)
&& id->gimple_call)
size_t nargs = gimple_call_num_args (id->gimple_call);
size_t n;
- for (p = DECL_ARGUMENTS (id->src_fn); p; p = TREE_CHAIN (p))
+ for (p = DECL_ARGUMENTS (id->src_fn); p; p = DECL_CHAIN (p))
nargs--;
/* Create the new array of arguments. */
tree count, p;
gimple new_stmt;
- for (p = DECL_ARGUMENTS (id->src_fn); p; p = TREE_CHAIN (p))
+ for (p = DECL_ARGUMENTS (id->src_fn); p; p = DECL_CHAIN (p))
nargs--;
count = build_int_cst (integer_type_node, nargs);
callgraph edges and update or duplicate them. */
if (is_gimple_call (stmt))
{
- struct cgraph_node *node;
struct cgraph_edge *edge;
+ int flags;
switch (id->transform_call_graph_edges)
{
- case CB_CGE_DUPLICATE:
- edge = cgraph_edge (id->src_node, orig_stmt);
- if (edge)
- cgraph_clone_edge (edge, id->dst_node, stmt,
- REG_BR_PROB_BASE, 1,
- edge->frequency, true);
- break;
-
- case CB_CGE_MOVE_CLONES:
- for (node = id->dst_node->next_clone;
- node;
- node = node->next_clone)
- {
- edge = cgraph_edge (node, orig_stmt);
- if (edge)
- cgraph_set_call_stmt (edge, stmt);
- }
- /* FALLTHRU */
-
- case CB_CGE_MOVE:
- edge = cgraph_edge (id->dst_node, orig_stmt);
- if (edge)
- cgraph_set_call_stmt (edge, stmt);
- break;
+ case CB_CGE_DUPLICATE:
+ edge = cgraph_edge (id->src_node, orig_stmt);
+ if (edge)
+ {
+ int edge_freq = edge->frequency;
+ edge = cgraph_clone_edge (edge, id->dst_node, stmt,
+ gimple_uid (stmt),
+ REG_BR_PROB_BASE, CGRAPH_FREQ_BASE,
+ true);
+ /* We could also just rescale the frequency, but
+ doing so would introduce roundoff errors and make
+ verifier unhappy. */
+ edge->frequency
+ = compute_call_stmt_bb_frequency (id->dst_node->decl,
+ copy_basic_block);
+ if (dump_file
+ && profile_status_for_function (cfun) != PROFILE_ABSENT
+ && (edge_freq > edge->frequency + 10
+ || edge_freq < edge->frequency - 10))
+ {
+ fprintf (dump_file, "Edge frequency estimated by "
+ "cgraph %i diverge from inliner's estimate %i\n",
+ edge_freq,
+ edge->frequency);
+ fprintf (dump_file,
+ "Orig bb: %i, orig bb freq %i, new bb freq %i\n",
+ bb->index,
+ bb->frequency,
+ copy_basic_block->frequency);
+ }
+ stmt = cgraph_redirect_edge_call_stmt_to_callee (edge);
+ }
+ break;
+
+ case CB_CGE_MOVE_CLONES:
+ cgraph_set_call_stmt_including_clones (id->dst_node,
+ orig_stmt, stmt);
+ edge = cgraph_edge (id->dst_node, stmt);
+ break;
+
+ case CB_CGE_MOVE:
+ edge = cgraph_edge (id->dst_node, orig_stmt);
+ if (edge)
+ cgraph_set_call_stmt (edge, stmt);
+ break;
+
+ default:
+ gcc_unreachable ();
+ }
- default:
- gcc_unreachable ();
+ /* Constant propagation on argument done during inlining
+ may create new direct call. Produce an edge for it. */
+ if ((!edge
+ || (edge->indirect_inlining_edge
+ && id->transform_call_graph_edges == CB_CGE_MOVE_CLONES))
+ && id->dst_node->analyzed
+ && (fn = gimple_call_fndecl (stmt)) != NULL)
+ {
+ struct cgraph_node *dest = cgraph_get_node (fn);
+
+ /* We have missing edge in the callgraph. This can happen
+ when previous inlining turned an indirect call into a
+ direct call by constant propagating arguments or we are
+ producing dead clone (for further cloning). In all
+ other cases we hit a bug (incorrect node sharing is the
+ most common reason for missing edges). */
+ gcc_assert (dest->needed || !dest->analyzed
+ || dest->address_taken
+ || !id->src_node->analyzed
+ || !id->dst_node->analyzed);
+ if (id->transform_call_graph_edges == CB_CGE_MOVE_CLONES)
+ cgraph_create_edge_including_clones
+ (id->dst_node, dest, orig_stmt, stmt, bb->count,
+ compute_call_stmt_bb_frequency (id->dst_node->decl,
+ copy_basic_block),
+ CIF_ORIGINALLY_INDIRECT_CALL);
+ else
+ cgraph_create_edge (id->dst_node, dest, stmt,
+ bb->count,
+ compute_call_stmt_bb_frequency
+ (id->dst_node->decl, copy_basic_block))->inline_failed
+ = CIF_ORIGINALLY_INDIRECT_CALL;
+ if (dump_file)
+ {
+ fprintf (dump_file, "Created new direct edge to %s\n",
+ cgraph_node_name (dest));
+ }
}
- }
- /* If you think we can abort here, you are wrong.
- There is no region 0 in gimple. */
- gcc_assert (lookup_stmt_eh_region_fn (id->src_cfun, orig_stmt) != 0);
-
- if (stmt_could_throw_p (stmt)
- /* When we are cloning for inlining, we are supposed to
- construct a clone that calls precisely the same functions
- as original. However IPA optimizers might've proved
- earlier some function calls as non-trapping that might
- render some basic blocks dead that might become
- unreachable.
-
- We can't update SSA with unreachable blocks in CFG and thus
- we prevent the scenario by preserving even the "dead" eh
- edges until the point they are later removed by
- fixup_cfg pass. */
- || (id->transform_call_graph_edges == CB_CGE_MOVE_CLONES
- && lookup_stmt_eh_region_fn (id->src_cfun, orig_stmt) > 0))
- {
- int region = lookup_stmt_eh_region_fn (id->src_cfun, orig_stmt);
-
- /* Add an entry for the copied tree in the EH hashtable.
- When cloning or versioning, use the hashtable in
- cfun, and just copy the EH number. When inlining, use the
- hashtable in the caller, and adjust the region number. */
- if (region > 0)
- add_stmt_to_eh_region (stmt, region + id->eh_region_offset);
-
- /* If this tree doesn't have a region associated with it,
- and there is a "current region,"
- then associate this tree with the current region
- and add edges associated with this region. */
- if (lookup_stmt_eh_region_fn (id->src_cfun, orig_stmt) <= 0
- && id->eh_region > 0
- && stmt_could_throw_p (stmt))
- add_stmt_to_eh_region (stmt, id->eh_region);
+ flags = gimple_call_flags (stmt);
+ if (flags & ECF_MAY_BE_ALLOCA)
+ cfun->calls_alloca = true;
+ if (flags & ECF_RETURNS_TWICE)
+ cfun->calls_setjmp = true;
}
- if (gimple_in_ssa_p (cfun))
+ maybe_duplicate_eh_stmt_fn (cfun, stmt, id->src_cfun, orig_stmt,
+ id->eh_map, id->eh_lp_nr);
+
+ if (gimple_in_ssa_p (cfun) && !is_gimple_debug (stmt))
{
ssa_op_iter i;
tree def;
gsi_next (©_gsi);
}
+ while (!gsi_end_p (copy_gsi));
copy_gsi = gsi_last_bb (copy_basic_block);
}
gimple phi;
gimple_stmt_iterator si;
- gcc_assert (e->flags & EDGE_ABNORMAL);
-
if (!nonlocal_goto)
gcc_assert (e->flags & EDGE_EH);
/* There shouldn't be any PHI nodes in the ENTRY_BLOCK. */
gcc_assert (!e->dest->aux);
- gcc_assert (SSA_NAME_OCCURS_IN_ABNORMAL_PHI (PHI_RESULT (phi)));
+ gcc_assert ((e->flags & EDGE_EH)
+ || SSA_NAME_OCCURS_IN_ABNORMAL_PHI (PHI_RESULT (phi)));
if (!is_gimple_reg (PHI_RESULT (phi)))
{
/* Copy edges from BB into its copy constructed earlier, scale profile
accordingly. Edges will be taken care of later. Assume aux
- pointers to point to the copies of each BB. */
+ pointers to point to the copies of each BB. Return true if any
+ debug stmts are left after a statement that must end the basic block. */
-static void
+static bool
copy_edges_for_bb (basic_block bb, gcov_type count_scale, basic_block ret_bb)
{
basic_block new_bb = (basic_block) bb->aux;
edge old_edge;
gimple_stmt_iterator si;
int flags;
+ bool need_debug_cleanup = false;
/* Use the indices from the original blocks to create edges for the
new ones. */
}
if (bb->index == ENTRY_BLOCK || bb->index == EXIT_BLOCK)
- return;
+ return false;
for (si = gsi_start_bb (new_bb); !gsi_end_p (si);)
{
bool can_throw, nonlocal_goto;
copy_stmt = gsi_stmt (si);
- update_stmt (copy_stmt);
- if (gimple_in_ssa_p (cfun))
- mark_symbols_for_renaming (copy_stmt);
+ if (!is_gimple_debug (copy_stmt))
+ {
+ update_stmt (copy_stmt);
+ if (gimple_in_ssa_p (cfun))
+ mark_symbols_for_renaming (copy_stmt);
+ }
/* Do this before the possible split_block. */
gsi_next (&si);
if (can_throw || nonlocal_goto)
{
if (!gsi_end_p (si))
+ {
+ while (!gsi_end_p (si) && is_gimple_debug (gsi_stmt (si)))
+ gsi_next (&si);
+ if (gsi_end_p (si))
+ need_debug_cleanup = true;
+ }
+ if (!gsi_end_p (si))
/* Note that bb's predecessor edges aren't necessarily
right at this point; split_block doesn't care. */
{
}
}
- if (can_throw)
+ if (gimple_code (copy_stmt) == GIMPLE_EH_DISPATCH)
+ make_eh_dispatch_edges (copy_stmt);
+ else if (can_throw)
make_eh_edges (copy_stmt);
if (nonlocal_goto)
update_ssa_across_abnormal_edges (gimple_bb (copy_stmt), ret_bb,
can_throw, nonlocal_goto);
}
+ return need_debug_cleanup;
}
/* Copy the PHIs. All blocks and edges are copied, some blocks
edge_iterator ei;
gimple phi;
gimple_stmt_iterator si;
+ edge new_edge;
+ bool inserted = false;
for (si = gsi_start (phi_nodes (bb)); !gsi_end_p (si); gsi_next (&si))
{
tree res, new_res;
gimple new_phi;
- edge new_edge;
phi = gsi_stmt (si);
res = PHI_RESULT (phi);
= new_phi = create_phi_node (new_res, new_bb);
FOR_EACH_EDGE (new_edge, ei, new_bb->preds)
{
- edge const old_edge
- = find_edge ((basic_block) new_edge->src->aux, bb);
- tree arg = PHI_ARG_DEF_FROM_EDGE (phi, old_edge);
- tree new_arg = arg;
+ edge old_edge = find_edge ((basic_block) new_edge->src->aux, bb);
+ tree arg;
+ tree new_arg;
tree block = id->block;
+ edge_iterator ei2;
+
+ /* When doing partial cloning, we allow PHIs on the entry block
+ as long as all the arguments are the same. Find any input
+ edge to see argument to copy. */
+ if (!old_edge)
+ FOR_EACH_EDGE (old_edge, ei2, bb->preds)
+ if (!old_edge->src->aux)
+ break;
+
+ arg = PHI_ARG_DEF_FROM_EDGE (phi, old_edge);
+ new_arg = arg;
id->block = NULL_TREE;
walk_tree (&new_arg, copy_tree_body_r, id, NULL);
id->block = block;
{
gimple_seq stmts = NULL;
new_arg = force_gimple_operand (new_arg, &stmts, true, NULL);
- gsi_insert_seq_on_edge_immediate (new_edge, stmts);
+ gsi_insert_seq_on_edge (new_edge, stmts);
+ inserted = true;
}
- add_phi_arg (new_phi, new_arg, new_edge);
+ add_phi_arg (new_phi, new_arg, new_edge,
+ gimple_phi_arg_location_from_edge (phi, old_edge));
}
}
}
+
+ /* Commit the delayed edge insertions. */
+ if (inserted)
+ FOR_EACH_EDGE (new_edge, ei, new_bb->preds)
+ gsi_commit_one_edge_insert (new_edge, NULL);
}
NEW_FNDECL to be build. CALLEE_FNDECL is the original */
static void
-initialize_cfun (tree new_fndecl, tree callee_fndecl, gcov_type count,
- int frequency)
+initialize_cfun (tree new_fndecl, tree callee_fndecl, gcov_type count)
{
- struct function *new_cfun
- = (struct function *) ggc_alloc_cleared (sizeof (struct function));
struct function *src_cfun = DECL_STRUCT_FUNCTION (callee_fndecl);
- gcov_type count_scale, frequency_scale;
+ gcov_type count_scale;
if (ENTRY_BLOCK_PTR_FOR_FUNCTION (src_cfun)->count)
count_scale = (REG_BR_PROB_BASE * count
/ ENTRY_BLOCK_PTR_FOR_FUNCTION (src_cfun)->count);
else
- count_scale = 1;
-
- if (ENTRY_BLOCK_PTR_FOR_FUNCTION (src_cfun)->frequency)
- frequency_scale = (REG_BR_PROB_BASE * frequency
- /
- ENTRY_BLOCK_PTR_FOR_FUNCTION (src_cfun)->frequency);
- else
- frequency_scale = count_scale;
+ count_scale = REG_BR_PROB_BASE;
/* Register specific tree functions. */
gimple_register_cfg_hooks ();
- *new_cfun = *DECL_STRUCT_FUNCTION (callee_fndecl);
- new_cfun->funcdef_no = get_next_funcdef_no ();
- VALUE_HISTOGRAMS (new_cfun) = NULL;
- new_cfun->local_decls = NULL;
- new_cfun->cfg = NULL;
- new_cfun->decl = new_fndecl /*= copy_node (callee_fndecl)*/;
- DECL_STRUCT_FUNCTION (new_fndecl) = new_cfun;
- push_cfun (new_cfun);
+
+ /* Get clean struct function. */
+ push_struct_function (new_fndecl);
+
+ /* We will rebuild these, so just sanity check that they are empty. */
+ gcc_assert (VALUE_HISTOGRAMS (cfun) == NULL);
+ gcc_assert (cfun->local_decls == NULL);
+ gcc_assert (cfun->cfg == NULL);
+ gcc_assert (cfun->decl == new_fndecl);
+
+ /* Copy items we preserve during cloning. */
+ cfun->static_chain_decl = src_cfun->static_chain_decl;
+ cfun->nonlocal_goto_save_area = src_cfun->nonlocal_goto_save_area;
+ cfun->function_end_locus = src_cfun->function_end_locus;
+ cfun->curr_properties = src_cfun->curr_properties;
+ cfun->last_verified = src_cfun->last_verified;
+ cfun->va_list_gpr_size = src_cfun->va_list_gpr_size;
+ cfun->va_list_fpr_size = src_cfun->va_list_fpr_size;
+ cfun->has_nonlocal_label = src_cfun->has_nonlocal_label;
+ cfun->stdarg = src_cfun->stdarg;
+ cfun->after_inlining = src_cfun->after_inlining;
+ cfun->can_throw_non_call_exceptions
+ = src_cfun->can_throw_non_call_exceptions;
+ cfun->returns_struct = src_cfun->returns_struct;
+ cfun->returns_pcc_struct = src_cfun->returns_pcc_struct;
+ cfun->after_tree_profile = src_cfun->after_tree_profile;
+
init_empty_tree_cfg ();
+ profile_status_for_function (cfun) = profile_status_for_function (src_cfun);
ENTRY_BLOCK_PTR->count =
(ENTRY_BLOCK_PTR_FOR_FUNCTION (src_cfun)->count * count_scale /
REG_BR_PROB_BASE);
- ENTRY_BLOCK_PTR->frequency =
- (ENTRY_BLOCK_PTR_FOR_FUNCTION (src_cfun)->frequency *
- frequency_scale / REG_BR_PROB_BASE);
+ ENTRY_BLOCK_PTR->frequency
+ = ENTRY_BLOCK_PTR_FOR_FUNCTION (src_cfun)->frequency;
EXIT_BLOCK_PTR->count =
(EXIT_BLOCK_PTR_FOR_FUNCTION (src_cfun)->count * count_scale /
REG_BR_PROB_BASE);
EXIT_BLOCK_PTR->frequency =
- (EXIT_BLOCK_PTR_FOR_FUNCTION (src_cfun)->frequency *
- frequency_scale / REG_BR_PROB_BASE);
+ EXIT_BLOCK_PTR_FOR_FUNCTION (src_cfun)->frequency;
if (src_cfun->eh)
init_eh_for_function ();
pop_cfun ();
}
+/* Helper function for copy_cfg_body. Move debug stmts from the end
+ of NEW_BB to the beginning of successor basic blocks when needed. If the
+ successor has multiple predecessors, reset them, otherwise keep
+ their value. */
+
+static void
+maybe_move_debug_stmts_to_successors (copy_body_data *id, basic_block new_bb)
+{
+ edge e;
+ edge_iterator ei;
+ gimple_stmt_iterator si = gsi_last_nondebug_bb (new_bb);
+
+ if (gsi_end_p (si)
+ || gsi_one_before_end_p (si)
+ || !(stmt_can_throw_internal (gsi_stmt (si))
+ || stmt_can_make_abnormal_goto (gsi_stmt (si))))
+ return;
+
+ FOR_EACH_EDGE (e, ei, new_bb->succs)
+ {
+ gimple_stmt_iterator ssi = gsi_last_bb (new_bb);
+ gimple_stmt_iterator dsi = gsi_after_labels (e->dest);
+ while (is_gimple_debug (gsi_stmt (ssi)))
+ {
+ gimple stmt = gsi_stmt (ssi), new_stmt;
+ tree var;
+ tree value;
+
+ /* For the last edge move the debug stmts instead of copying
+ them. */
+ if (ei_one_before_end_p (ei))
+ {
+ si = ssi;
+ gsi_prev (&ssi);
+ if (!single_pred_p (e->dest) && gimple_debug_bind_p (stmt))
+ gimple_debug_bind_reset_value (stmt);
+ gsi_remove (&si, false);
+ gsi_insert_before (&dsi, stmt, GSI_SAME_STMT);
+ continue;
+ }
+
+ if (gimple_debug_bind_p (stmt))
+ {
+ var = gimple_debug_bind_get_var (stmt);
+ if (single_pred_p (e->dest))
+ {
+ value = gimple_debug_bind_get_value (stmt);
+ value = unshare_expr (value);
+ }
+ else
+ value = NULL_TREE;
+ new_stmt = gimple_build_debug_bind (var, value, stmt);
+ }
+ else if (gimple_debug_source_bind_p (stmt))
+ {
+ var = gimple_debug_source_bind_get_var (stmt);
+ value = gimple_debug_source_bind_get_value (stmt);
+ new_stmt = gimple_build_debug_source_bind (var, value, stmt);
+ }
+ else
+ gcc_unreachable ();
+ gsi_insert_before (&dsi, new_stmt, GSI_SAME_STMT);
+ VEC_safe_push (gimple, heap, id->debug_stmts, new_stmt);
+ gsi_prev (&ssi);
+ }
+ }
+}
+
/* Make a copy of the body of FN so that it can be inserted inline in
another function. Walks FN via CFG, returns new fndecl. */
static tree
-copy_cfg_body (copy_body_data * id, gcov_type count, int frequency,
- basic_block entry_block_map, basic_block exit_block_map)
+copy_cfg_body (copy_body_data * id, gcov_type count, int frequency_scale,
+ basic_block entry_block_map, basic_block exit_block_map,
+ bitmap blocks_to_copy, basic_block new_entry)
{
tree callee_fndecl = id->src_fn;
/* Original cfun for the callee, doesn't change. */
struct function *cfun_to_copy;
basic_block bb;
tree new_fndecl = NULL;
- gcov_type count_scale, frequency_scale;
+ bool need_debug_cleanup = false;
+ gcov_type count_scale;
int last;
+ int incoming_frequency = 0;
+ gcov_type incoming_count = 0;
if (ENTRY_BLOCK_PTR_FOR_FUNCTION (src_cfun)->count)
count_scale = (REG_BR_PROB_BASE * count
/ ENTRY_BLOCK_PTR_FOR_FUNCTION (src_cfun)->count);
else
- count_scale = 1;
-
- if (ENTRY_BLOCK_PTR_FOR_FUNCTION (src_cfun)->frequency)
- frequency_scale = (REG_BR_PROB_BASE * frequency
- /
- ENTRY_BLOCK_PTR_FOR_FUNCTION (src_cfun)->frequency);
- else
- frequency_scale = count_scale;
+ count_scale = REG_BR_PROB_BASE;
/* Register specific tree functions. */
gimple_register_cfg_hooks ();
+ /* If we are inlining just region of the function, make sure to connect new entry
+ to ENTRY_BLOCK_PTR. Since new entry can be part of loop, we must compute
+ frequency and probability of ENTRY_BLOCK_PTR based on the frequencies and
+ probabilities of edges incoming from nonduplicated region. */
+ if (new_entry)
+ {
+ edge e;
+ edge_iterator ei;
+
+ FOR_EACH_EDGE (e, ei, new_entry->preds)
+ if (!e->src->aux)
+ {
+ incoming_frequency += EDGE_FREQUENCY (e);
+ incoming_count += e->count;
+ }
+ incoming_count = incoming_count * count_scale / REG_BR_PROB_BASE;
+ incoming_frequency
+ = incoming_frequency * frequency_scale / REG_BR_PROB_BASE;
+ ENTRY_BLOCK_PTR->count = incoming_count;
+ ENTRY_BLOCK_PTR->frequency = incoming_frequency;
+ }
+
/* Must have a CFG here at this point. */
gcc_assert (ENTRY_BLOCK_PTR_FOR_FUNCTION
(DECL_STRUCT_FUNCTION (callee_fndecl)));
/* Duplicate any exception-handling regions. */
if (cfun->eh)
- {
- id->eh_region_offset
- = duplicate_eh_regions (cfun_to_copy, remap_decl_1, id,
- 0, id->eh_region);
- }
+ id->eh_map = duplicate_eh_regions (cfun_to_copy, NULL, id->eh_lp_nr,
+ remap_decl_1, id);
/* Use aux pointers to map the original blocks to copy. */
FOR_EACH_BB_FN (bb, cfun_to_copy)
- {
- basic_block new_bb = copy_bb (id, bb, frequency_scale, count_scale);
- bb->aux = new_bb;
- new_bb->aux = bb;
- }
+ if (!blocks_to_copy || bitmap_bit_p (blocks_to_copy, bb->index))
+ {
+ basic_block new_bb = copy_bb (id, bb, frequency_scale, count_scale);
+ bb->aux = new_bb;
+ new_bb->aux = bb;
+ }
last = last_basic_block;
/* Now that we've duplicated the blocks, duplicate their edges. */
FOR_ALL_BB_FN (bb, cfun_to_copy)
- copy_edges_for_bb (bb, count_scale, exit_block_map);
+ if (!blocks_to_copy
+ || (bb->index > 0 && bitmap_bit_p (blocks_to_copy, bb->index)))
+ need_debug_cleanup |= copy_edges_for_bb (bb, count_scale, exit_block_map);
+
+ if (new_entry)
+ {
+ edge e = make_edge (entry_block_map, (basic_block)new_entry->aux, EDGE_FALLTHRU);
+ e->probability = REG_BR_PROB_BASE;
+ e->count = incoming_count;
+ }
if (gimple_in_ssa_p (cfun))
FOR_ALL_BB_FN (bb, cfun_to_copy)
- copy_phis_for_bb (bb, id);
+ if (!blocks_to_copy
+ || (bb->index > 0 && bitmap_bit_p (blocks_to_copy, bb->index)))
+ copy_phis_for_bb (bb, id);
FOR_ALL_BB_FN (bb, cfun_to_copy)
- {
- ((basic_block)bb->aux)->aux = NULL;
- bb->aux = NULL;
- }
+ if (bb->aux)
+ {
+ if (need_debug_cleanup
+ && bb->index != ENTRY_BLOCK
+ && bb->index != EXIT_BLOCK)
+ maybe_move_debug_stmts_to_successors (id, (basic_block) bb->aux);
+ ((basic_block)bb->aux)->aux = NULL;
+ bb->aux = NULL;
+ }
/* Zero out AUX fields of newly created block during EH edge
insertion. */
for (; last < last_basic_block; last++)
- BASIC_BLOCK (last)->aux = NULL;
+ {
+ if (need_debug_cleanup)
+ maybe_move_debug_stmts_to_successors (id, BASIC_BLOCK (last));
+ BASIC_BLOCK (last)->aux = NULL;
+ }
entry_block_map->aux = NULL;
exit_block_map->aux = NULL;
+ if (id->eh_map)
+ {
+ pointer_map_destroy (id->eh_map);
+ id->eh_map = NULL;
+ }
+
return new_fndecl;
}
+/* Copy the debug STMT using ID. We deal with these statements in a
+ special way: if any variable in their VALUE expression wasn't
+ remapped yet, we won't remap it, because that would get decl uids
+ out of sync, causing codegen differences between -g and -g0. If
+ this arises, we drop the VALUE expression altogether. */
+
+static void
+copy_debug_stmt (gimple stmt, copy_body_data *id)
+{
+ tree t, *n;
+ struct walk_stmt_info wi;
+
+ t = id->block;
+ if (gimple_block (stmt))
+ {
+ n = (tree *) pointer_map_contains (id->decl_map, gimple_block (stmt));
+ if (n)
+ t = *n;
+ }
+ gimple_set_block (stmt, t);
+
+ /* Remap all the operands in COPY. */
+ memset (&wi, 0, sizeof (wi));
+ wi.info = id;
+
+ processing_debug_stmt = 1;
+
+ if (gimple_debug_source_bind_p (stmt))
+ t = gimple_debug_source_bind_get_var (stmt);
+ else
+ t = gimple_debug_bind_get_var (stmt);
+
+ if (TREE_CODE (t) == PARM_DECL && id->debug_map
+ && (n = (tree *) pointer_map_contains (id->debug_map, t)))
+ {
+ gcc_assert (TREE_CODE (*n) == VAR_DECL);
+ t = *n;
+ }
+ else if (TREE_CODE (t) == VAR_DECL
+ && !TREE_STATIC (t)
+ && gimple_in_ssa_p (cfun)
+ && !pointer_map_contains (id->decl_map, t)
+ && !var_ann (t))
+ /* T is a non-localized variable. */;
+ else
+ walk_tree (&t, remap_gimple_op_r, &wi, NULL);
+
+ if (gimple_debug_bind_p (stmt))
+ {
+ gimple_debug_bind_set_var (stmt, t);
+
+ if (gimple_debug_bind_has_value_p (stmt))
+ walk_tree (gimple_debug_bind_get_value_ptr (stmt),
+ remap_gimple_op_r, &wi, NULL);
+
+ /* Punt if any decl couldn't be remapped. */
+ if (processing_debug_stmt < 0)
+ gimple_debug_bind_reset_value (stmt);
+ }
+ else if (gimple_debug_source_bind_p (stmt))
+ {
+ gimple_debug_source_bind_set_var (stmt, t);
+ walk_tree (gimple_debug_source_bind_get_value_ptr (stmt),
+ remap_gimple_op_r, &wi, NULL);
+ }
+
+ processing_debug_stmt = 0;
+
+ update_stmt (stmt);
+ if (gimple_in_ssa_p (cfun))
+ mark_symbols_for_renaming (stmt);
+}
+
+/* Process deferred debug stmts. In order to give values better odds
+ of being successfully remapped, we delay the processing of debug
+ stmts until all other stmts that might require remapping are
+ processed. */
+
+static void
+copy_debug_stmts (copy_body_data *id)
+{
+ size_t i;
+ gimple stmt;
+
+ if (!id->debug_stmts)
+ return;
+
+ FOR_EACH_VEC_ELT (gimple, id->debug_stmts, i, stmt)
+ copy_debug_stmt (stmt, id);
+
+ VEC_free (gimple, heap, id->debug_stmts);
+}
+
+/* Make a copy of the body of SRC_FN so that it can be inserted inline in
+ another function. */
+
+static tree
+copy_tree_body (copy_body_data *id)
+{
+ tree fndecl = id->src_fn;
+ tree body = DECL_SAVED_TREE (fndecl);
+
+ walk_tree (&body, copy_tree_body_r, id, NULL);
+
+ return body;
+}
+
+/* Make a copy of the body of FN so that it can be inserted inline in
+ another function. */
+
static tree
-copy_body (copy_body_data *id, gcov_type count, int frequency,
- basic_block entry_block_map, basic_block exit_block_map)
+copy_body (copy_body_data *id, gcov_type count, int frequency_scale,
+ basic_block entry_block_map, basic_block exit_block_map,
+ bitmap blocks_to_copy, basic_block new_entry)
{
tree fndecl = id->src_fn;
tree body;
/* If this body has a CFG, walk CFG and copy. */
gcc_assert (ENTRY_BLOCK_PTR_FOR_FUNCTION (DECL_STRUCT_FUNCTION (fndecl)));
- body = copy_cfg_body (id, count, frequency, entry_block_map, exit_block_map);
+ body = copy_cfg_body (id, count, frequency_scale, entry_block_map, exit_block_map,
+ blocks_to_copy, new_entry);
+ copy_debug_stmts (id);
return body;
}
return var && auto_var_in_fn_p (var, fn);
}
-static void
-insert_init_stmt (basic_block bb, gimple init_stmt)
+/* Append to BB a debug annotation that binds VAR to VALUE, inheriting
+ lexical block and line number information from base_stmt, if given,
+ or from the last stmt of the block otherwise. */
+
+static gimple
+insert_init_debug_bind (copy_body_data *id,
+ basic_block bb, tree var, tree value,
+ gimple base_stmt)
{
- gimple_stmt_iterator si = gsi_last_bb (bb);
- gimple_stmt_iterator i;
- gimple_seq seq = gimple_seq_alloc ();
- struct gimplify_ctx gctx;
+ gimple note;
+ gimple_stmt_iterator gsi;
+ tree tracked_var;
- push_gimplify_context (&gctx);
+ if (!gimple_in_ssa_p (id->src_cfun))
+ return NULL;
- i = gsi_start (seq);
- gimple_regimplify_operands (init_stmt, &i);
+ if (!MAY_HAVE_DEBUG_STMTS)
+ return NULL;
- if (gimple_in_ssa_p (cfun)
- && init_stmt
- && !gimple_seq_empty_p (seq))
+ tracked_var = target_for_debug_bind (var);
+ if (!tracked_var)
+ return NULL;
+
+ if (bb)
{
- /* The replacement can expose previously unreferenced
- variables. */
- for (i = gsi_start (seq); !gsi_end_p (i); gsi_next (&i))
- find_new_referenced_vars (gsi_stmt (i));
+ gsi = gsi_last_bb (bb);
+ if (!base_stmt && !gsi_end_p (gsi))
+ base_stmt = gsi_stmt (gsi);
+ }
- /* Insert the gimplified sequence needed for INIT_STMT
- after SI. INIT_STMT will be inserted after SEQ. */
- gsi_insert_seq_after (&si, seq, GSI_NEW_STMT);
- }
+ note = gimple_build_debug_bind (tracked_var, value, base_stmt);
- pop_gimplify_context (NULL);
+ if (bb)
+ {
+ if (!gsi_end_p (gsi))
+ gsi_insert_after (&gsi, note, GSI_SAME_STMT);
+ else
+ gsi_insert_before (&gsi, note, GSI_SAME_STMT);
+ }
+ return note;
+}
+
+static void
+insert_init_stmt (copy_body_data *id, basic_block bb, gimple init_stmt)
+{
/* If VAR represents a zero-sized variable, it's possible that the
assignment statement may result in no gimple statements. */
if (init_stmt)
- gsi_insert_after (&si, init_stmt, GSI_NEW_STMT);
+ {
+ gimple_stmt_iterator si = gsi_last_bb (bb);
+
+ /* We can end up with init statements that store to a non-register
+ from a rhs with a conversion. Handle that here by forcing the
+ rhs into a temporary. gimple_regimplify_operands is not
+ prepared to do this for us. */
+ if (!is_gimple_debug (init_stmt)
+ && !is_gimple_reg (gimple_assign_lhs (init_stmt))
+ && is_gimple_reg_type (TREE_TYPE (gimple_assign_lhs (init_stmt)))
+ && gimple_assign_rhs_class (init_stmt) == GIMPLE_UNARY_RHS)
+ {
+ tree rhs = build1 (gimple_assign_rhs_code (init_stmt),
+ gimple_expr_type (init_stmt),
+ gimple_assign_rhs1 (init_stmt));
+ rhs = force_gimple_operand_gsi (&si, rhs, true, NULL_TREE, false,
+ GSI_NEW_STMT);
+ gimple_assign_set_rhs_code (init_stmt, TREE_CODE (rhs));
+ gimple_assign_set_rhs1 (init_stmt, rhs);
+ }
+ gsi_insert_after (&si, init_stmt, GSI_NEW_STMT);
+ gimple_regimplify_operands (init_stmt, &si);
+ mark_symbols_for_renaming (init_stmt);
- if (gimple_in_ssa_p (cfun))
- for (;!gsi_end_p (si); gsi_next (&si))
- mark_symbols_for_renaming (gsi_stmt (si));
+ if (!is_gimple_debug (init_stmt) && MAY_HAVE_DEBUG_STMTS)
+ {
+ tree var, def = gimple_assign_lhs (init_stmt);
+
+ if (TREE_CODE (def) == SSA_NAME)
+ var = SSA_NAME_VAR (def);
+ else
+ var = def;
+
+ insert_init_debug_bind (id, bb, var, def, init_stmt);
+ }
+ }
}
/* Initialize parameter P with VALUE. If needed, produce init statement
&& value != error_mark_node
&& !useless_type_conversion_p (TREE_TYPE (p), TREE_TYPE (value)))
{
+ /* If we can match up types by promotion/demotion do so. */
if (fold_convertible_p (TREE_TYPE (p), value))
- rhs = fold_build1 (NOP_EXPR, TREE_TYPE (p), value);
+ rhs = fold_convert (TREE_TYPE (p), value);
else
- /* ??? For valid (GIMPLE) programs we should not end up here.
- Still if something has gone wrong and we end up with truly
- mismatched types here, fall back to using a VIEW_CONVERT_EXPR
- to not leak invalid GIMPLE to the following passes. */
- rhs = fold_build1 (VIEW_CONVERT_EXPR, TREE_TYPE (p), value);
+ {
+ /* ??? For valid programs we should not end up here.
+ Still if we end up with truly mismatched types here, fall back
+ to using a VIEW_CONVERT_EXPR or a literal zero to not leak invalid
+ GIMPLE to the following passes. */
+ if (!is_gimple_reg_type (TREE_TYPE (value))
+ || TYPE_SIZE (TREE_TYPE (p)) == TYPE_SIZE (TREE_TYPE (value)))
+ rhs = fold_build1 (VIEW_CONVERT_EXPR, TREE_TYPE (p), value);
+ else
+ rhs = build_zero_cst (TREE_TYPE (p));
+ }
}
+ /* Make an equivalent VAR_DECL. Note that we must NOT remap the type
+ here since the type of this decl must be visible to the calling
+ function. */
+ var = copy_decl_to_var (p, id);
+
+ /* We're actually using the newly-created var. */
+ if (gimple_in_ssa_p (cfun) && TREE_CODE (var) == VAR_DECL)
+ add_referenced_var (var);
+
+ /* Declare this new variable. */
+ DECL_CHAIN (var) = *vars;
+ *vars = var;
+
+ /* Make gimplifier happy about this variable. */
+ DECL_SEEN_IN_BIND_EXPR_P (var) = 1;
+
/* If the parameter is never assigned to, has no SSA_NAMEs created,
- we may not need to create a new variable here at all. Instead, we may
- be able to just use the argument value. */
+ we would not need to create a new variable here at all, if it
+ weren't for debug info. Still, we can just use the argument
+ value. */
if (TREE_READONLY (p)
&& !TREE_ADDRESSABLE (p)
&& value && !TREE_SIDE_EFFECTS (value)
&& ! self_inlining_addr_expr (value, fn))
{
insert_decl_map (id, p, value);
- return NULL;
+ insert_debug_decl_map (id, p, var);
+ return insert_init_debug_bind (id, bb, var, value, NULL);
}
}
- /* Make an equivalent VAR_DECL. Note that we must NOT remap the type
- here since the type of this decl must be visible to the calling
- function. */
- var = copy_decl_to_var (p, id);
- if (gimple_in_ssa_p (cfun) && TREE_CODE (var) == VAR_DECL)
- {
- get_var_ann (var);
- add_referenced_var (var);
- }
-
/* Register the VAR_DECL as the equivalent for the PARM_DECL;
that way, when the PARM_DECL is encountered, it will be
automatically replaced by the VAR_DECL. */
insert_decl_map (id, p, var);
- /* Declare this new variable. */
- TREE_CHAIN (var) = *vars;
- *vars = var;
-
- /* Make gimplifier happy about this variable. */
- DECL_SEEN_IN_BIND_EXPR_P (var) = 1;
-
/* Even if P was TREE_READONLY, the new VAR should not be.
In the original code, we would have constructed a
temporary, and then the function body would have never
We need to construct map for the variable anyway as it might be used
in different SSA names when parameter is set in function.
- FIXME: This usually kills the last connection in between inlined
- function parameter and the actual value in debug info. Can we do
- better here? If we just inserted the statement, copy propagation
- would kill it anyway as it always did in older versions of GCC.
-
- We might want to introduce a notion that single SSA_NAME might
- represent multiple variables for purposes of debugging. */
+ Do replacement at -O0 for const arguments replaced by constant.
+ This is important for builtin_constant_p and other construct requiring
+ constant argument to be visible in inlined function body. */
if (gimple_in_ssa_p (cfun) && rhs && def && is_gimple_reg (p)
+ && (optimize
+ || (TREE_READONLY (p)
+ && is_gimple_min_invariant (rhs)))
&& (TREE_CODE (rhs) == SSA_NAME
|| is_gimple_min_invariant (rhs))
&& !SSA_NAME_OCCURS_IN_ABNORMAL_PHI (def))
{
insert_decl_map (id, def, rhs);
- return NULL;
+ return insert_init_debug_bind (id, bb, var, rhs, NULL);
}
/* If the value of argument is never used, don't care about initializing
it. */
- if (gimple_in_ssa_p (cfun) && !def && is_gimple_reg (p))
+ if (optimize && gimple_in_ssa_p (cfun) && !def && is_gimple_reg (p))
{
gcc_assert (!value || !TREE_SIDE_EFFECTS (value));
- return NULL;
+ return insert_init_debug_bind (id, bb, var, rhs, NULL);
}
/* Initialize this VAR_DECL from the equivalent argument. Convert
if (rhs == error_mark_node)
{
insert_decl_map (id, p, var);
- return NULL;
+ return insert_init_debug_bind (id, bb, var, rhs, NULL);
}
STRIP_USELESS_TYPE_CONVERSION (rhs);
init_stmt = gimple_build_assign (var, rhs);
if (bb && init_stmt)
- insert_init_stmt (bb, init_stmt);
+ insert_init_stmt (id, bb, init_stmt);
}
return init_stmt;
}
/* Loop through the parameter declarations, replacing each with an
equivalent VAR_DECL, appropriately initialized. */
- for (p = parms, i = 0; p; p = TREE_CHAIN (p), i++)
+ for (p = parms, i = 0; p; p = DECL_CHAIN (p), i++)
{
tree val;
val = i < gimple_call_num_args (stmt) ? gimple_call_arg (stmt, i) : NULL;
setup_one_parameter (id, p, val, fn, bb, &vars);
}
+ /* After remapping parameters remap their types. This has to be done
+ in a second loop over all parameters to appropriately remap
+ variable sized arrays when the size is specified in a
+ parameter following the array. */
+ for (p = parms, i = 0; p; p = DECL_CHAIN (p), i++)
+ {
+ tree *varp = (tree *) pointer_map_contains (id->decl_map, p);
+ if (varp
+ && TREE_CODE (*varp) == VAR_DECL)
+ {
+ tree def = (gimple_in_ssa_p (cfun) && is_gimple_reg (p)
+ ? gimple_default_def (id->src_cfun, p) : NULL);
+ tree var = *varp;
+ TREE_TYPE (var) = remap_type (TREE_TYPE (var), id);
+ /* Also remap the default definition if it was remapped
+ to the default definition of the parameter replacement
+ by the parameter setup. */
+ if (def)
+ {
+ tree *defp = (tree *) pointer_map_contains (id->decl_map, def);
+ if (defp
+ && TREE_CODE (*defp) == SSA_NAME
+ && SSA_NAME_VAR (*defp) == var)
+ TREE_TYPE (*defp) = TREE_TYPE (var);
+ }
+ }
+ }
/* Initialize the static chain. */
p = DECL_STRUCT_FUNCTION (fn)->static_chain_decl;
is set only for CALL_EXPR_RETURN_SLOT_OPT. MODIFY_DEST, if non-null,
was the LHS of the MODIFY_EXPR to which this call is the RHS.
- The return value is a (possibly null) value that is the result of the
- function as seen by the callee. *USE_P is a (possibly null) value that
- holds the result as seen by the caller. */
+ The return value is a (possibly null) value that holds the result
+ as seen by the caller. */
static tree
declare_return_variable (copy_body_data *id, tree return_slot, tree modify_dest,
- tree *use_p)
+ basic_block entry_bb)
{
tree callee = id->src_fn;
- tree caller = id->dst_fn;
tree result = DECL_RESULT (callee);
tree callee_type = TREE_TYPE (result);
- tree caller_type = TREE_TYPE (TREE_TYPE (callee));
+ tree caller_type;
tree var, use;
- /* We don't need to do anything for functions that don't return
- anything. */
- if (!result || VOID_TYPE_P (callee_type))
- {
- *use_p = NULL_TREE;
- return NULL_TREE;
- }
+ /* Handle type-mismatches in the function declaration return type
+ vs. the call expression. */
+ if (modify_dest)
+ caller_type = TREE_TYPE (modify_dest);
+ else
+ caller_type = TREE_TYPE (TREE_TYPE (callee));
+
+ /* We don't need to do anything for functions that don't return anything. */
+ if (VOID_TYPE_P (callee_type))
+ return NULL_TREE;
/* If there was a return slot, then the return value is the
dereferenced address of that object. */
STRIP_USELESS_TYPE_CONVERSION (return_slot_addr);
/* We are going to construct *&return_slot and we can't do that
- for variables believed to be not addressable.
+ for variables believed to be not addressable.
FIXME: This check possibly can match, because values returned
via return slot optimization are not believed to have address
taken by alias analysis. */
gcc_assert (TREE_CODE (return_slot) != SSA_NAME);
- if (gimple_in_ssa_p (cfun))
- {
- HOST_WIDE_INT bitsize;
- HOST_WIDE_INT bitpos;
- tree offset;
- enum machine_mode mode;
- int unsignedp;
- int volatilep;
- tree base;
- base = get_inner_reference (return_slot, &bitsize, &bitpos,
- &offset,
- &mode, &unsignedp, &volatilep,
- false);
- if (TREE_CODE (base) == INDIRECT_REF)
- base = TREE_OPERAND (base, 0);
- if (TREE_CODE (base) == SSA_NAME)
- base = SSA_NAME_VAR (base);
- mark_sym_for_renaming (base);
- }
var = return_slot_addr;
}
else
var = copy_result_decl_to_var (result, id);
if (gimple_in_ssa_p (cfun))
- {
- get_var_ann (var);
- add_referenced_var (var);
- }
+ add_referenced_var (var);
DECL_SEEN_IN_BIND_EXPR_P (var) = 1;
- DECL_STRUCT_FUNCTION (caller)->local_decls
- = tree_cons (NULL_TREE, var,
- DECL_STRUCT_FUNCTION (caller)->local_decls);
/* Do not have the rest of GCC warn about this variable as it should
not be visible to the user. */
promoted, convert it back to the expected type. */
use = var;
if (!useless_type_conversion_p (caller_type, TREE_TYPE (var)))
- use = fold_convert (caller_type, var);
-
+ {
+ /* If we can match up types by promotion/demotion do so. */
+ if (fold_convertible_p (caller_type, var))
+ use = fold_convert (caller_type, var);
+ else
+ {
+ /* ??? For valid programs we should not end up here.
+ Still if we end up with truly mismatched types here, fall back
+ to using a MEM_REF to not leak invalid GIMPLE to the following
+ passes. */
+ /* Prevent var from being written into SSA form. */
+ if (TREE_CODE (TREE_TYPE (var)) == VECTOR_TYPE
+ || TREE_CODE (TREE_TYPE (var)) == COMPLEX_TYPE)
+ DECL_GIMPLE_REG_P (var) = false;
+ else if (is_gimple_reg_type (TREE_TYPE (var)))
+ TREE_ADDRESSABLE (var) = true;
+ use = fold_build2 (MEM_REF, caller_type,
+ build_fold_addr_expr (var),
+ build_int_cst (ptr_type_node, 0));
+ }
+ }
+
STRIP_USELESS_TYPE_CONVERSION (use);
if (DECL_BY_REFERENCE (result))
- var = build_fold_addr_expr (var);
+ {
+ TREE_ADDRESSABLE (var) = 1;
+ var = build_fold_addr_expr (var);
+ }
done:
/* Register the VAR_DECL as the equivalent for the RESULT_DECL; that
way, when the RESULT_DECL is encountered, it will be
- automatically replaced by the VAR_DECL. */
- insert_decl_map (id, result, var);
+ automatically replaced by the VAR_DECL.
+
+ When returning by reference, ensure that RESULT_DECL remaps to
+ gimple_val. */
+ if (DECL_BY_REFERENCE (result)
+ && !is_gimple_val (var))
+ {
+ tree temp = create_tmp_var (TREE_TYPE (result), "retvalptr");
+ if (gimple_in_ssa_p (id->src_cfun))
+ add_referenced_var (temp);
+ insert_decl_map (id, result, temp);
+ /* When RESULT_DECL is in SSA form, we need to use it's default_def
+ SSA_NAME. */
+ if (gimple_in_ssa_p (id->src_cfun) && gimple_default_def (id->src_cfun, result))
+ temp = remap_ssa_name (gimple_default_def (id->src_cfun, result), id);
+ insert_init_stmt (id, entry_bb, gimple_build_assign (temp, var));
+ }
+ else
+ insert_decl_map (id, result, var);
/* Remember this so we can ignore it in remap_decls. */
id->retvar = var;
- *use_p = use;
- return var;
+ return use;
}
-/* Returns nonzero if a function can be inlined as a tree. */
+/* Callback through walk_tree. Determine if a DECL_INITIAL makes reference
+ to a local label. */
-bool
-tree_inlinable_function_p (tree fn)
+static tree
+has_label_address_in_static_1 (tree *nodep, int *walk_subtrees, void *fnp)
{
- bool ret = inlinable_function_p (fn);
+ tree node = *nodep;
+ tree fn = (tree) fnp;
+
+ if (TREE_CODE (node) == LABEL_DECL && DECL_CONTEXT (node) == fn)
+ return node;
- if (getenv ("TUPLES_INLINE"))
- fprintf (stderr, "Function %s is %sinlinable\n", get_name (fn),
- ret ? "" : "not ");
+ if (TYPE_P (node))
+ *walk_subtrees = 0;
- return ret;
+ return NULL_TREE;
}
-static const char *inline_forbidden_reason;
-
-/* A callback for walk_gimple_seq to handle tree operands. Returns
- NULL_TREE if a function can be inlined, otherwise sets the reason
- why not and returns a tree representing the offending operand. */
+/* Determine if the function can be copied. If so return NULL. If
+ not return a string describng the reason for failure. */
-static tree
-inline_forbidden_p_op (tree *nodep, int *walk_subtrees ATTRIBUTE_UNUSED,
- void *fnp ATTRIBUTE_UNUSED)
+static const char *
+copy_forbidden (struct function *fun, tree fndecl)
{
- tree node = *nodep;
- tree t;
-
- if (TREE_CODE (node) == RECORD_TYPE || TREE_CODE (node) == UNION_TYPE)
+ const char *reason = fun->cannot_be_copied_reason;
+ tree decl;
+ unsigned ix;
+
+ /* Only examine the function once. */
+ if (fun->cannot_be_copied_set)
+ return reason;
+
+ /* We cannot copy a function that receives a non-local goto
+ because we cannot remap the destination label used in the
+ function that is performing the non-local goto. */
+ /* ??? Actually, this should be possible, if we work at it.
+ No doubt there's just a handful of places that simply
+ assume it doesn't happen and don't substitute properly. */
+ if (fun->has_nonlocal_label)
{
- /* We cannot inline a function of the form
-
- void F (int i) { struct S { int ar[i]; } s; }
-
- Attempting to do so produces a catch-22.
- If walk_tree examines the TYPE_FIELDS chain of RECORD_TYPE/
- UNION_TYPE nodes, then it goes into infinite recursion on a
- structure containing a pointer to its own type. If it doesn't,
- then the type node for S doesn't get adjusted properly when
- F is inlined.
-
- ??? This is likely no longer true, but it's too late in the 4.0
- cycle to try to find out. This should be checked for 4.1. */
- for (t = TYPE_FIELDS (node); t; t = TREE_CHAIN (t))
- if (variably_modified_type_p (TREE_TYPE (t), NULL))
- {
- inline_forbidden_reason
- = G_("function %q+F can never be inlined "
- "because it uses variable sized variables");
- return node;
- }
+ reason = G_("function %q+F can never be copied "
+ "because it receives a non-local goto");
+ goto fail;
}
- return NULL_TREE;
+ FOR_EACH_LOCAL_DECL (fun, ix, decl)
+ if (TREE_CODE (decl) == VAR_DECL
+ && TREE_STATIC (decl)
+ && !DECL_EXTERNAL (decl)
+ && DECL_INITIAL (decl)
+ && walk_tree_without_duplicates (&DECL_INITIAL (decl),
+ has_label_address_in_static_1,
+ fndecl))
+ {
+ reason = G_("function %q+F can never be copied because it saves "
+ "address of local label in a static variable");
+ goto fail;
+ }
+
+ fail:
+ fun->cannot_be_copied_reason = reason;
+ fun->cannot_be_copied_set = true;
+ return reason;
}
-/* A callback for walk_gimple_seq to handle statements. Returns
- non-NULL iff a function can not be inlined. Also sets the reason
- why. */
+static const char *inline_forbidden_reason;
+
+/* A callback for walk_gimple_seq to handle statements. Returns non-null
+ iff a function can not be inlined. Also sets the reason why. */
static tree
inline_forbidden_p_stmt (gimple_stmt_iterator *gsi, bool *handled_ops_p,
this may change program's memory overhead drastically when the
function using alloca is called in loop. In GCC present in
SPEC2000 inlining into schedule_block cause it to require 2GB of
- RAM instead of 256MB. */
+ RAM instead of 256MB. Don't do so for alloca calls emitted for
+ VLA objects as those can't cause unbounded growth (they're always
+ wrapped inside stack_save/stack_restore regions. */
if (gimple_alloca_call_p (stmt)
+ && !gimple_call_alloca_for_var_p (stmt)
&& !lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn)))
{
inline_forbidden_reason
instantiations, which causes unexpected behavior. */
if (TREE_CODE (t) != LABEL_DECL)
{
- inline_forbidden_reason
- = G_("function %q+F can never be inlined "
- "because it contains a computed goto");
- *handled_ops_p = true;
- return t;
- }
- break;
-
- case GIMPLE_LABEL:
- t = gimple_label_label (stmt);
- if (DECL_NONLOCAL (t))
- {
- /* We cannot inline a function that receives a non-local goto
- because we cannot remap the destination label used in the
- function that is performing the non-local goto. */
- inline_forbidden_reason
- = G_("function %q+F can never be inlined "
- "because it receives a non-local goto");
- *handled_ops_p = true;
- return t;
- }
- break;
-
- default:
- break;
- }
-
- *handled_ops_p = false;
- return NULL_TREE;
-}
-
-
-static tree
-inline_forbidden_p_2 (tree *nodep, int *walk_subtrees,
- void *fnp)
-{
- tree node = *nodep;
- tree fn = (tree) fnp;
+ inline_forbidden_reason
+ = G_("function %q+F can never be inlined "
+ "because it contains a computed goto");
+ *handled_ops_p = true;
+ return t;
+ }
+ break;
- if (TREE_CODE (node) == LABEL_DECL && DECL_CONTEXT (node) == fn)
- {
- inline_forbidden_reason
- = G_("function %q+F can never be inlined "
- "because it saves address of local label in a static variable");
- return node;
+ default:
+ break;
}
- if (TYPE_P (node))
- *walk_subtrees = 0;
-
+ *handled_ops_p = false;
return NULL_TREE;
}
static bool
inline_forbidden_p (tree fndecl)
{
- location_t saved_loc = input_location;
struct function *fun = DECL_STRUCT_FUNCTION (fndecl);
- tree step;
struct walk_stmt_info wi;
struct pointer_set_t *visited_nodes;
basic_block bb;
bool forbidden_p = false;
+ /* First check for shared reasons not to copy the code. */
+ inline_forbidden_reason = copy_forbidden (fun, fndecl);
+ if (inline_forbidden_reason != NULL)
+ return true;
+
+ /* Next, walk the statements of the function looking for
+ constraucts we can't handle, or are non-optimal for inlining. */
visited_nodes = pointer_set_create ();
memset (&wi, 0, sizeof (wi));
wi.info = (void *) fndecl;
{
gimple ret;
gimple_seq seq = bb_seq (bb);
- ret = walk_gimple_seq (seq, inline_forbidden_p_stmt,
- inline_forbidden_p_op, &wi);
+ ret = walk_gimple_seq (seq, inline_forbidden_p_stmt, NULL, &wi);
forbidden_p = (ret != NULL);
if (forbidden_p)
- goto egress;
- }
-
- for (step = fun->local_decls; step; step = TREE_CHAIN (step))
- {
- tree decl = TREE_VALUE (step);
- if (TREE_CODE (decl) == VAR_DECL
- && TREE_STATIC (decl)
- && !DECL_EXTERNAL (decl)
- && DECL_INITIAL (decl))
- {
- tree ret;
- ret = walk_tree_without_duplicates (&DECL_INITIAL (decl),
- inline_forbidden_p_2, fndecl);
- forbidden_p = (ret != NULL);
- if (forbidden_p)
- goto egress;
- }
+ break;
}
-egress:
pointer_set_destroy (visited_nodes);
- input_location = saved_loc;
return forbidden_p;
}
/* Returns nonzero if FN is a function that does not have any
fundamental inline blocking properties. */
-static bool
-inlinable_function_p (tree fn)
+bool
+tree_inlinable_function_p (tree fn)
{
bool inlinable = true;
bool do_warning;
/* We only warn for functions declared `inline' by the user. */
do_warning = (warn_inline
&& DECL_DECLARED_INLINE_P (fn)
+ && !DECL_NO_INLINE_WARNING_P (fn)
&& !DECL_IN_SYSTEM_HEADER (fn));
always_inline = lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn));
inlinable = false;
}
- /* Don't auto-inline anything that might not be bound within
- this unit of translation. */
- else if (!DECL_DECLARED_INLINE_P (fn)
- && DECL_REPLACEABLE_P (fn))
- inlinable = false;
-
else if (!function_attribute_inlinable_p (fn))
{
if (do_warning)
inlinable = false;
}
- /* If we don't have the function body available, we can't inline it.
- However, this should not be recorded since we also get here for
- forward declared inline functions. Therefore, return at once. */
- if (!gimple_body (fn))
- return false;
-
else if (inline_forbidden_p (fn))
{
/* See if we should warn about uninlinable functions. Previously,
As a bonus we can now give more details about the reason why a
function is not inlinable. */
if (always_inline)
- sorry (inline_forbidden_reason, fn);
+ error (inline_forbidden_reason, fn);
else if (do_warning)
warning (OPT_Winline, inline_forbidden_reason, fn);
{
HOST_WIDE_INT size;
+ gcc_assert (!VOID_TYPE_P (type));
+
+ if (TREE_CODE (type) == VECTOR_TYPE)
+ {
+ enum machine_mode inner = TYPE_MODE (TREE_TYPE (type));
+ enum machine_mode simd
+ = targetm.vectorize.preferred_simd_mode (inner);
+ int simd_mode_size = GET_MODE_SIZE (simd);
+ return ((GET_MODE_SIZE (TYPE_MODE (type)) + simd_mode_size - 1)
+ / simd_mode_size);
+ }
+
size = int_size_in_bytes (type);
- if (size < 0 || size > MOVE_MAX_PIECES * MOVE_RATIO)
+ if (size < 0 || size > MOVE_MAX_PIECES * MOVE_RATIO (!optimize_size))
/* Cost of a memcpy call, 3 arguments and the call. */
return 4;
else
/* Returns cost of operation CODE, according to WEIGHTS */
static int
-estimate_operator_cost (enum tree_code code, eni_weights *weights)
+estimate_operator_cost (enum tree_code code, eni_weights *weights,
+ tree op1 ATTRIBUTE_UNUSED, tree op2)
{
switch (code)
{
CASE_CONVERT:
case COMPLEX_EXPR:
case PAREN_EXPR:
+ case VIEW_CONVERT_EXPR:
return 0;
/* Assign cost of 1 to usual operations.
??? We may consider mapping RTL costs to this. */
case COND_EXPR:
case VEC_COND_EXPR:
+ case VEC_PERM_EXPR:
case PLUS_EXPR:
case POINTER_PLUS_EXPR:
case MINUS_EXPR:
case MULT_EXPR:
+ case FMA_EXPR:
+ case ADDR_SPACE_CONVERT_EXPR:
case FIXED_CONVERT_EXPR:
case FIX_TRUNC_EXPR:
case WIDEN_SUM_EXPR:
case WIDEN_MULT_EXPR:
case DOT_PROD_EXPR:
+ case WIDEN_MULT_PLUS_EXPR:
+ case WIDEN_MULT_MINUS_EXPR:
+ case WIDEN_LSHIFT_EXPR:
case VEC_WIDEN_MULT_HI_EXPR:
case VEC_WIDEN_MULT_LO_EXPR:
case VEC_PACK_TRUNC_EXPR:
case VEC_PACK_SAT_EXPR:
case VEC_PACK_FIX_TRUNC_EXPR:
- case VEC_EXTRACT_EVEN_EXPR:
- case VEC_EXTRACT_ODD_EXPR:
- case VEC_INTERLEAVE_HIGH_EXPR:
- case VEC_INTERLEAVE_LOW_EXPR:
+ case VEC_WIDEN_LSHIFT_HI_EXPR:
+ case VEC_WIDEN_LSHIFT_LO_EXPR:
return 1;
case FLOOR_MOD_EXPR:
case ROUND_MOD_EXPR:
case RDIV_EXPR:
- return weights->div_mod_cost;
+ if (TREE_CODE (op2) != INTEGER_CST)
+ return weights->div_mod_cost;
+ return 1;
default:
/* We expect a copy assignment with no operator. */
unsigned cost, i;
enum gimple_code code = gimple_code (stmt);
tree lhs;
+ tree rhs;
switch (code)
{
likely be a real store, so the cost of the GIMPLE_ASSIGN is the cost
of moving something into "a", which we compute using the function
estimate_move_cost. */
+ if (gimple_clobber_p (stmt))
+ return 0; /* ={v} {CLOBBER} stmt expands to nothing. */
+
lhs = gimple_assign_lhs (stmt);
+ rhs = gimple_assign_rhs1 (stmt);
+
if (is_gimple_reg (lhs))
cost = 0;
else
cost = estimate_move_cost (TREE_TYPE (lhs));
- cost += estimate_operator_cost (gimple_assign_rhs_code (stmt), weights);
+ if (!is_gimple_reg (rhs) && !is_gimple_min_invariant (rhs))
+ cost += estimate_move_cost (TREE_TYPE (rhs));
+
+ cost += estimate_operator_cost (gimple_assign_rhs_code (stmt), weights,
+ gimple_assign_rhs1 (stmt),
+ get_gimple_rhs_class (gimple_assign_rhs_code (stmt))
+ == GIMPLE_BINARY_RHS
+ ? gimple_assign_rhs2 (stmt) : NULL);
break;
case GIMPLE_COND:
- cost = 1 + estimate_operator_cost (gimple_cond_code (stmt), weights);
+ cost = 1 + estimate_operator_cost (gimple_cond_code (stmt), weights,
+ gimple_op (stmt, 0),
+ gimple_op (stmt, 1));
break;
case GIMPLE_SWITCH:
/* Take into account cost of the switch + guess 2 conditional jumps for
- each case label.
+ each case label.
TODO: once the switch expansion logic is sufficiently separated, we can
do better job on estimating cost of the switch. */
- cost = gimple_switch_num_labels (stmt) * 2;
+ if (weights->time_based)
+ cost = floor_log2 (gimple_switch_num_labels (stmt)) * 2;
+ else
+ cost = gimple_switch_num_labels (stmt) * 2;
break;
case GIMPLE_CALL:
{
tree decl = gimple_call_fndecl (stmt);
- tree addr = gimple_call_fn (stmt);
- tree funtype = TREE_TYPE (addr);
-
- if (POINTER_TYPE_P (funtype))
- funtype = TREE_TYPE (funtype);
-
- if (decl && DECL_BUILT_IN_CLASS (decl) == BUILT_IN_MD)
- cost = weights->target_builtin_call_cost;
- else
- cost = weights->call_cost;
-
- if (decl && DECL_BUILT_IN_CLASS (decl) == BUILT_IN_NORMAL)
- switch (DECL_FUNCTION_CODE (decl))
- {
- case BUILT_IN_CONSTANT_P:
- return 0;
- case BUILT_IN_EXPECT:
- cost = 0;
- break;
-
- /* Prefetch instruction is not expensive. */
- case BUILT_IN_PREFETCH:
- cost = weights->target_builtin_call_cost;
- break;
-
- default:
- break;
- }
-
- if (decl)
- funtype = TREE_TYPE (decl);
-
- /* Our cost must be kept in sync with
- cgraph_estimate_size_after_inlining that does use function
- declaration to figure out the arguments. */
- if (decl && DECL_ARGUMENTS (decl))
- {
- tree arg;
- for (arg = DECL_ARGUMENTS (decl); arg; arg = TREE_CHAIN (arg))
- cost += estimate_move_cost (TREE_TYPE (arg));
- }
- else if (funtype && prototype_p (funtype))
- {
- tree t;
- for (t = TYPE_ARG_TYPES (funtype); t; t = TREE_CHAIN (t))
- cost += estimate_move_cost (TREE_VALUE (t));
- }
- else
+ struct cgraph_node *node = NULL;
+
+ /* Do not special case builtins where we see the body.
+ This just confuse inliner. */
+ if (!decl || !(node = cgraph_get_node (decl)) || node->analyzed)
+ ;
+ /* For buitins that are likely expanded to nothing or
+ inlined do not account operand costs. */
+ else if (is_simple_builtin (decl))
+ return 0;
+ else if (is_inexpensive_builtin (decl))
+ return weights->target_builtin_call_cost;
+ else if (DECL_BUILT_IN_CLASS (decl) == BUILT_IN_NORMAL)
{
- for (i = 0; i < gimple_call_num_args (stmt); i++)
+ /* We canonicalize x * x to pow (x, 2.0) with -ffast-math, so
+ specialize the cheap expansion we do here.
+ ??? This asks for a more general solution. */
+ switch (DECL_FUNCTION_CODE (decl))
{
- tree arg = gimple_call_arg (stmt, i);
- cost += estimate_move_cost (TREE_TYPE (arg));
+ case BUILT_IN_POW:
+ case BUILT_IN_POWF:
+ case BUILT_IN_POWL:
+ if (TREE_CODE (gimple_call_arg (stmt, 1)) == REAL_CST
+ && REAL_VALUES_EQUAL
+ (TREE_REAL_CST (gimple_call_arg (stmt, 1)), dconst2))
+ return estimate_operator_cost (MULT_EXPR, weights,
+ gimple_call_arg (stmt, 0),
+ gimple_call_arg (stmt, 0));
+ break;
+
+ default:
+ break;
}
}
+ cost = node ? weights->call_cost : weights->indirect_call_cost;
+ if (gimple_call_lhs (stmt))
+ cost += estimate_move_cost (TREE_TYPE (gimple_call_lhs (stmt)));
+ for (i = 0; i < gimple_call_num_args (stmt); i++)
+ {
+ tree arg = gimple_call_arg (stmt, i);
+ cost += estimate_move_cost (TREE_TYPE (arg));
+ }
break;
}
+ case GIMPLE_RETURN:
+ return weights->return_cost;
+
case GIMPLE_GOTO:
case GIMPLE_LABEL:
case GIMPLE_NOP:
case GIMPLE_PHI:
- case GIMPLE_RETURN:
- case GIMPLE_CHANGE_DYNAMIC_TYPE:
case GIMPLE_PREDICT:
+ case GIMPLE_DEBUG:
return 0;
case GIMPLE_ASM:
+ return asm_str_count (gimple_asm_string (stmt));
+
case GIMPLE_RESX:
- return 1;
+ /* This is either going to be an external function call with one
+ argument, or two register copy statements plus a goto. */
+ return 2;
+
+ case GIMPLE_EH_DISPATCH:
+ /* ??? This is going to turn into a switch statement. Ideally
+ we'd have a look at the eh region and estimate the number of
+ edges involved. */
+ return 10;
case GIMPLE_BIND:
return estimate_num_insns_seq (gimple_bind_body (stmt), weights);
return (weights->omp_cost
+ estimate_num_insns_seq (gimple_omp_body (stmt), weights));
+ case GIMPLE_TRANSACTION:
+ return (weights->tm_cost
+ + estimate_num_insns_seq (gimple_transaction_body (stmt),
+ weights));
+
default:
gcc_unreachable ();
}
void
init_inline_once (void)
{
- eni_inlining_weights.call_cost = PARAM_VALUE (PARAM_INLINE_CALL_COST);
- eni_inlining_weights.target_builtin_call_cost = 1;
- eni_inlining_weights.div_mod_cost = 10;
- eni_inlining_weights.omp_cost = 40;
-
eni_size_weights.call_cost = 1;
+ eni_size_weights.indirect_call_cost = 3;
eni_size_weights.target_builtin_call_cost = 1;
eni_size_weights.div_mod_cost = 1;
eni_size_weights.omp_cost = 40;
+ eni_size_weights.tm_cost = 10;
+ eni_size_weights.time_based = false;
+ eni_size_weights.return_cost = 1;
/* Estimating time for call is difficult, since we have no idea what the
called function does. In the current uses of eni_time_weights,
underestimating the cost does less harm than overestimating it, so
we choose a rather small value here. */
eni_time_weights.call_cost = 10;
- eni_time_weights.target_builtin_call_cost = 10;
+ eni_time_weights.indirect_call_cost = 15;
+ eni_time_weights.target_builtin_call_cost = 1;
eni_time_weights.div_mod_cost = 10;
eni_time_weights.omp_cost = 40;
+ eni_time_weights.tm_cost = 40;
+ eni_time_weights.time_based = true;
+ eni_time_weights.return_cost = 2;
}
/* Estimate the number of instructions in a gimple_seq. */
/* Install new lexical TREE_BLOCK underneath 'current_block'. */
static void
-add_lexical_block (tree current_block, tree new_block)
+prepend_lexical_block (tree current_block, tree new_block)
{
- tree *blk_p;
-
- /* Walk to the last sub-block. */
- for (blk_p = &BLOCK_SUBBLOCKS (current_block);
- *blk_p;
- blk_p = &BLOCK_CHAIN (*blk_p))
- ;
- *blk_p = new_block;
+ BLOCK_CHAIN (new_block) = BLOCK_SUBBLOCKS (current_block);
+ BLOCK_SUBBLOCKS (current_block) = new_block;
BLOCK_SUPERCONTEXT (new_block) = current_block;
}
-/* Fetch callee declaration from the call graph edge going from NODE and
- associated with STMR call statement. Return NULL_TREE if not found. */
-static tree
-get_indirect_callee_fndecl (struct cgraph_node *node, gimple stmt)
+/* Add local variables from CALLEE to CALLER. */
+
+static inline void
+add_local_variables (struct function *callee, struct function *caller,
+ copy_body_data *id, bool check_var_ann)
{
- struct cgraph_edge *cs;
+ tree var;
+ unsigned ix;
- cs = cgraph_edge (node, stmt);
- if (cs)
- return cs->callee->decl;
+ FOR_EACH_LOCAL_DECL (callee, ix, var)
+ if (TREE_STATIC (var) && !TREE_ASM_WRITTEN (var))
+ {
+ if (!check_var_ann
+ || (var_ann (var) && add_referenced_var (var)))
+ add_local_decl (caller, var);
+ }
+ else if (!can_be_nonlocal (var, id))
+ {
+ tree new_var = remap_decl (var, id);
- return NULL_TREE;
+ /* Remap debug-expressions. */
+ if (TREE_CODE (new_var) == VAR_DECL
+ && DECL_DEBUG_EXPR_IS_FROM (new_var)
+ && new_var != var)
+ {
+ tree tem = DECL_DEBUG_EXPR (var);
+ bool old_regimplify = id->regimplify;
+ id->remapping_type_depth++;
+ walk_tree (&tem, copy_tree_body_r, id, NULL);
+ id->remapping_type_depth--;
+ id->regimplify = old_regimplify;
+ SET_DECL_DEBUG_EXPR (new_var, tem);
+ }
+ add_local_decl (caller, new_var);
+ }
}
/* If STMT is a GIMPLE_CALL, replace it with its inline expansion. */
static bool
expand_call_inline (basic_block bb, gimple stmt, copy_body_data *id)
{
- tree retvar, use_retvar;
+ tree use_retvar;
tree fn;
- struct pointer_map_t *st;
+ struct pointer_map_t *st, *dst;
tree return_slot;
tree modify_dest;
location_t saved_location;
struct cgraph_edge *cg_edge;
- const char *reason;
+ cgraph_inline_failed_t reason;
basic_block return_block;
edge e;
gimple_stmt_iterator gsi, stmt_gsi;
bool successfully_inlined = FALSE;
bool purge_dead_abnormal_edges;
- tree t_step;
- tree var;
/* Set input_location here so we get the right instantiation context
if we call instantiate_decl from inlinable_function_p. */
if (gimple_code (stmt) != GIMPLE_CALL)
goto egress;
+ cg_edge = cgraph_edge (id->dst_node, stmt);
+ gcc_checking_assert (cg_edge);
/* First, see if we can figure out what function is being called.
If we cannot, then there is no hope of inlining the function. */
- fn = gimple_call_fndecl (stmt);
- if (!fn)
- {
- fn = get_indirect_callee_fndecl (id->dst_node, stmt);
- if (!fn)
- goto egress;
- }
-
- /* Turn forward declarations into real ones. */
- fn = cgraph_node (fn)->decl;
+ if (cg_edge->indirect_unknown_callee)
+ goto egress;
+ fn = cg_edge->callee->decl;
+ gcc_checking_assert (fn);
/* If FN is a declaration of a function in a nested scope that was
globally declared inline, we don't set its DECL_INITIAL.
gimple_body. */
if (!DECL_INITIAL (fn)
&& DECL_ABSTRACT_ORIGIN (fn)
- && gimple_body (DECL_ABSTRACT_ORIGIN (fn)))
+ && gimple_has_body_p (DECL_ABSTRACT_ORIGIN (fn)))
fn = DECL_ABSTRACT_ORIGIN (fn);
- /* Objective C and fortran still calls tree_rest_of_compilation directly.
- Kill this check once this is fixed. */
- if (!id->dst_node->analyzed)
- goto egress;
-
- cg_edge = cgraph_edge (id->dst_node, stmt);
-
- /* Constant propagation on argument done during previous inlining
- may create new direct call. Produce an edge for it. */
- if (!cg_edge)
- {
- struct cgraph_node *dest = cgraph_node (fn);
-
- /* We have missing edge in the callgraph. This can happen in one case
- where previous inlining turned indirect call into direct call by
- constant propagating arguments. In all other cases we hit a bug
- (incorrect node sharing is most common reason for missing edges. */
- gcc_assert (dest->needed);
- cgraph_create_edge (id->dst_node, dest, stmt,
- bb->count, CGRAPH_FREQ_BASE,
- bb->loop_depth)->inline_failed
- = N_("originally indirect function call not considered for inlining");
- if (dump_file)
- {
- fprintf (dump_file, "Created new direct edge to %s",
- cgraph_node_name (dest));
- }
- goto egress;
- }
-
- /* Don't try to inline functions that are not well-suited to
- inlining. */
+ /* Don't try to inline functions that are not well-suited to inlining. */
if (!cgraph_inline_p (cg_edge, &reason))
{
/* If this call was originally indirect, we do not want to emit any
inlining related warnings or sorry messages because there are no
guarantees regarding those. */
- if (cg_edge->indirect_call)
+ if (cg_edge->indirect_inlining_edge)
goto egress;
if (lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn))
/* Avoid warnings during early inline pass. */
- && cgraph_global_info_ready)
+ && cgraph_global_info_ready
+ /* PR 20090218-1_0.c. Body can be provided by another module. */
+ && (reason != CIF_BODY_NOT_AVAILABLE || !flag_generate_lto))
{
- sorry ("inlining failed in call to %q+F: %s", fn, reason);
- sorry ("called from here");
+ error ("inlining failed in call to always_inline %q+F: %s", fn,
+ cgraph_inline_failed_string (reason));
+ error ("called from here");
}
- else if (warn_inline && DECL_DECLARED_INLINE_P (fn)
+ else if (warn_inline
+ && DECL_DECLARED_INLINE_P (fn)
+ && !DECL_NO_INLINE_WARNING_P (fn)
&& !DECL_IN_SYSTEM_HEADER (fn)
- && strlen (reason)
+ && reason != CIF_UNSPECIFIED
&& !lookup_attribute ("noinline", DECL_ATTRIBUTES (fn))
+ /* Do not warn about not inlined recursive calls. */
+ && !cgraph_edge_recursive_p (cg_edge)
/* Avoid warnings during early inline pass. */
&& cgraph_global_info_ready)
{
warning (OPT_Winline, "inlining failed in call to %q+F: %s",
- fn, reason);
+ fn, _(cgraph_inline_failed_string (reason)));
warning (OPT_Winline, "called from here");
}
goto egress;
#endif
/* We will be inlining this callee. */
- id->eh_region = lookup_stmt_eh_region (stmt);
+ id->eh_lp_nr = lookup_stmt_eh_lp (stmt);
+
+ /* Update the callers EH personality. */
+ if (DECL_FUNCTION_PERSONALITY (cg_edge->callee->decl))
+ DECL_FUNCTION_PERSONALITY (cg_edge->caller->decl)
+ = DECL_FUNCTION_PERSONALITY (cg_edge->callee->decl);
/* Split the block holding the GIMPLE_CALL. */
e = split_block (bb, stmt);
id->block = make_node (BLOCK);
BLOCK_ABSTRACT_ORIGIN (id->block) = fn;
BLOCK_SOURCE_LOCATION (id->block) = input_location;
- add_lexical_block (gimple_block (stmt), id->block);
+ prepend_lexical_block (gimple_block (stmt), id->block);
/* Local declarations will be replaced by their equivalents in this
map. */
st = id->decl_map;
id->decl_map = pointer_map_create ();
+ dst = id->debug_map;
+ id->debug_map = NULL;
/* Record the function we are about to inline. */
id->src_fn = fn;
gcc_assert (!id->src_cfun->after_inlining);
id->entry_bb = bb;
+ if (lookup_attribute ("cold", DECL_ATTRIBUTES (fn)))
+ {
+ gimple_stmt_iterator si = gsi_last_bb (bb);
+ gsi_insert_after (&si, gimple_build_predict (PRED_COLD_FUNCTION,
+ NOT_TAKEN),
+ GSI_NEW_STMT);
+ }
initialize_inlined_parameters (id, stmt, fn, bb);
if (DECL_INITIAL (fn))
- add_lexical_block (id->block, remap_blocks (DECL_INITIAL (fn), id));
+ prepend_lexical_block (id->block, remap_blocks (DECL_INITIAL (fn), id));
/* Return statements in the function body will be replaced by jumps
to the RET_LABEL. */
}
/* Declare the return variable for the function. */
- retvar = declare_return_variable (id, return_slot, modify_dest, &use_retvar);
+ use_retvar = declare_return_variable (id, return_slot, modify_dest, bb);
- if (DECL_IS_OPERATOR_NEW (fn))
+ /* Add local vars in this inlined callee to caller. */
+ add_local_variables (id->src_cfun, cfun, id, true);
+
+ if (dump_file && (dump_flags & TDF_DETAILS))
{
- gcc_assert (TREE_CODE (retvar) == VAR_DECL
- && POINTER_TYPE_P (TREE_TYPE (retvar)));
- DECL_NO_TBAA_P (retvar) = 1;
+ fprintf (dump_file, "Inlining ");
+ print_generic_expr (dump_file, id->src_fn, 0);
+ fprintf (dump_file, " to ");
+ print_generic_expr (dump_file, id->dst_fn, 0);
+ fprintf (dump_file, " with frequency %i\n", cg_edge->frequency);
}
/* This is it. Duplicate the callee body. Assume callee is
function in any way before this point, as this CALL_EXPR may be
a self-referential call; if we're calling ourselves, we need to
duplicate our body before altering anything. */
- copy_body (id, bb->count, bb->frequency, bb, return_block);
+ copy_body (id, bb->count,
+ cg_edge->frequency * REG_BR_PROB_BASE / CGRAPH_FREQ_BASE,
+ bb, return_block, NULL, NULL);
- /* Add local vars in this inlined callee to caller. */
- t_step = id->src_cfun->local_decls;
- for (; t_step; t_step = TREE_CHAIN (t_step))
- {
- var = TREE_VALUE (t_step);
- if (TREE_STATIC (var) && !TREE_ASM_WRITTEN (var))
- cfun->local_decls = tree_cons (NULL_TREE, var,
- cfun->local_decls);
- else
- cfun->local_decls = tree_cons (NULL_TREE, remap_decl (var, id),
- cfun->local_decls);
- }
+ /* Reset the escaped solution. */
+ if (cfun->gimple_df)
+ pt_solution_reset (&cfun->gimple_df->escaped);
/* Clean up. */
+ if (id->debug_map)
+ {
+ pointer_map_destroy (id->debug_map);
+ id->debug_map = dst;
+ }
pointer_map_destroy (id->decl_map);
id->decl_map = st;
+ /* Unlink the calls virtual operands before replacing it. */
+ unlink_stmt_vdef (stmt);
+
/* If the inlined function returns a result that we care about,
substitute the GIMPLE_CALL with an assignment of the return
variable to the LHS of the call. That is, if STMT was
stmt = gimple_build_assign (gimple_call_lhs (stmt), use_retvar);
gsi_replace (&stmt_gsi, stmt, false);
if (gimple_in_ssa_p (cfun))
- {
- update_stmt (stmt);
- mark_symbols_for_renaming (stmt);
- }
+ mark_symbols_for_renaming (stmt);
maybe_clean_or_replace_eh_stmt (old_stmt, stmt);
}
else
undefined via a move. */
stmt = gimple_build_assign (gimple_call_lhs (stmt), def);
gsi_replace (&stmt_gsi, stmt, true);
- update_stmt (stmt);
}
else
{
}
if (purge_dead_abnormal_edges)
- gimple_purge_dead_abnormal_call_edges (return_block);
+ {
+ gimple_purge_dead_eh_edges (return_block);
+ gimple_purge_dead_abnormal_call_edges (return_block);
+ }
/* If the value of the new expression is ignored, that's OK. We
don't warn about this for CALL_EXPRs, so we shouldn't warn about
/* Expand call statements reachable from STMT_P.
We can only have CALL_EXPRs as the "toplevel" tree code or nested
- in a MODIFY_EXPR. See tree-gimple.c:get_call_expr_in(). We can
- unfortunately not use that function here because we need a pointer
- to the CALL_EXPR, not the tree itself. */
+ in a MODIFY_EXPR. */
static bool
gimple_expand_calls_inline (basic_block bb, copy_body_data *id)
if (pointer_set_contains (statements, gsi_stmt (gsi)))
{
gimple old_stmt = gsi_stmt (gsi);
+ tree old_decl = is_gimple_call (old_stmt) ? gimple_call_fndecl (old_stmt) : 0;
- if (fold_stmt (&gsi))
+ if (old_decl && DECL_BUILT_IN (old_decl))
+ {
+ /* Folding builtins can create multiple instructions,
+ we need to look at all of them. */
+ gimple_stmt_iterator i2 = gsi;
+ gsi_prev (&i2);
+ if (fold_stmt (&gsi))
+ {
+ gimple new_stmt;
+ /* If a builtin at the end of a bb folded into nothing,
+ the following loop won't work. */
+ if (gsi_end_p (gsi))
+ {
+ cgraph_update_edges_for_call_stmt (old_stmt,
+ old_decl, NULL);
+ break;
+ }
+ if (gsi_end_p (i2))
+ i2 = gsi_start_bb (BASIC_BLOCK (first));
+ else
+ gsi_next (&i2);
+ while (1)
+ {
+ new_stmt = gsi_stmt (i2);
+ update_stmt (new_stmt);
+ cgraph_update_edges_for_call_stmt (old_stmt, old_decl,
+ new_stmt);
+
+ if (new_stmt == gsi_stmt (gsi))
+ {
+ /* It is okay to check only for the very last
+ of these statements. If it is a throwing
+ statement nothing will change. If it isn't
+ this can remove EH edges. If that weren't
+ correct then because some intermediate stmts
+ throw, but not the last one. That would mean
+ we'd have to split the block, which we can't
+ here and we'd loose anyway. And as builtins
+ probably never throw, this all
+ is mood anyway. */
+ if (maybe_clean_or_replace_eh_stmt (old_stmt,
+ new_stmt))
+ gimple_purge_dead_eh_edges (BASIC_BLOCK (first));
+ break;
+ }
+ gsi_next (&i2);
+ }
+ }
+ }
+ else if (fold_stmt (&gsi))
{
/* Re-read the statement from GSI as fold_stmt() may
have changed it. */
gimple new_stmt = gsi_stmt (gsi);
update_stmt (new_stmt);
- if (is_gimple_call (old_stmt))
- cgraph_update_edges_for_call_stmt (old_stmt, new_stmt);
+ if (is_gimple_call (old_stmt)
+ || is_gimple_call (new_stmt))
+ cgraph_update_edges_for_call_stmt (old_stmt, old_decl,
+ new_stmt);
if (maybe_clean_or_replace_eh_stmt (old_stmt, new_stmt))
gimple_purge_dead_eh_edges (BASIC_BLOCK (first));
optimize_inline_calls (tree fn)
{
copy_body_data id;
- tree prev_fn;
basic_block bb;
int last = n_basic_blocks;
struct gimplify_ctx gctx;
-
- /* There is no point in performing inlining if errors have already
- occurred -- and we might crash if we try to inline invalid
- code. */
- if (errorcount || sorrycount)
- return 0;
+ bool inlined_p = false;
/* Clear out ID. */
memset (&id, 0, sizeof (id));
- id.src_node = id.dst_node = cgraph_node (fn);
+ id.src_node = id.dst_node = cgraph_get_node (fn);
+ gcc_assert (id.dst_node->analyzed);
id.dst_fn = fn;
/* Or any functions that aren't finished yet. */
- prev_fn = NULL_TREE;
if (current_function_decl)
- {
- id.dst_fn = current_function_decl;
- prev_fn = current_function_decl;
- }
+ id.dst_fn = current_function_decl;
id.copy_decl = copy_decl_maybe_to_var;
id.transform_call_graph_edges = CB_CGE_DUPLICATE;
follow it; we'll trudge through them, processing their CALL_EXPRs
along the way. */
FOR_EACH_BB (bb)
- gimple_expand_calls_inline (bb, &id);
+ inlined_p |= gimple_expand_calls_inline (bb, &id);
pop_gimplify_context (NULL);
gcc_assert (e->inline_failed);
}
#endif
-
- /* Fold the statements before compacting/renumbering the basic blocks. */
+
+ /* Fold queued statements. */
fold_marked_statements (last, id.statements_to_fold);
pointer_set_destroy (id.statements_to_fold);
-
- /* Renumber the (code) basic_blocks consecutively. */
- compact_blocks ();
+
+ gcc_assert (!id.debug_stmts);
+
+ /* If we didn't inline into the function there is nothing to do. */
+ if (!inlined_p)
+ return 0;
+
/* Renumber the lexical scoping (non-code) blocks consecutively. */
number_blocks (fn);
- /* We are not going to maintain the cgraph edges up to date.
- Kill it so it won't confuse us. */
- cgraph_node_remove_callees (id.dst_node);
-
- fold_cond_expr_cond ();
+ delete_unreachable_blocks_update_callgraph (&id);
+#ifdef ENABLE_CHECKING
+ verify_cgraph_node (id.dst_node);
+#endif
/* It would be nice to check SSA/CFG/statement consistency here, but it is
not possible yet - the IPA passes might make various functions to not
return (TODO_update_ssa
| TODO_cleanup_cfg
| (gimple_in_ssa_p (cfun) ? TODO_remove_unused_locals : 0)
+ | (gimple_in_ssa_p (cfun) ? TODO_update_address_taken : 0)
| (profile_status != PROFILE_ABSENT ? TODO_rebuild_frequencies : 0));
}
here. */
tree chain = NULL_TREE, new_tree;
- chain = TREE_CHAIN (*tp);
+ if (CODE_CONTAINS_STRUCT (code, TS_COMMON))
+ chain = TREE_CHAIN (*tp);
/* Copy the node. */
new_tree = copy_node (*tp);
CONSTRUCTOR_ELTS (*tp));
*tp = new_tree;
}
+ else if (code == STATEMENT_LIST)
+ /* We used to just abort on STATEMENT_LIST, but we can run into them
+ with statement-expressions (c++/40975). */
+ copy_statement_list (tp);
else if (TREE_CODE_CLASS (code) == tcc_type)
*walk_subtrees = 0;
else if (TREE_CODE_CLASS (code) == tcc_declaration)
*walk_subtrees = 0;
else if (TREE_CODE_CLASS (code) == tcc_constant)
*walk_subtrees = 0;
- else
- gcc_assert (code != STATEMENT_LIST);
return NULL_TREE;
}
gcc_unreachable ();
else if (TREE_CODE (*tp) == BIND_EXPR)
copy_bind_expr (tp, walk_subtrees, id);
- else if (TREE_CODE (*tp) == SAVE_EXPR)
+ else if (TREE_CODE (*tp) == SAVE_EXPR
+ || TREE_CODE (*tp) == TARGET_EXPR)
remap_save_expr (tp, st, walk_subtrees);
else
{
id.src_fn = current_function_decl;
id.dst_fn = current_function_decl;
id.decl_map = pointer_map_create ();
+ id.debug_map = NULL;
id.copy_decl = copy_decl_no_change;
id.transform_call_graph_edges = CB_CGE_DUPLICATE;
/* Clean up. */
pointer_map_destroy (id.decl_map);
+ if (id.debug_map)
+ pointer_map_destroy (id.debug_map);
return expr;
}
/* This will remap a lot of the same decls again, but this should be
harmless. */
if (gimple_bind_vars (stmt))
- gimple_bind_set_vars (stmt, remap_decls (gimple_bind_vars (stmt), id));
+ gimple_bind_set_vars (stmt, remap_decls (gimple_bind_vars (stmt), NULL, id));
}
/* Keep iterating. */
id.src_fn = current_function_decl;
id.dst_fn = current_function_decl;
id.decl_map = pointer_map_create ();
+ id.debug_map = NULL;
id.copy_decl = copy_decl_no_change;
id.transform_call_graph_edges = CB_CGE_DUPLICATE;
/* Clean up. */
pointer_map_destroy (id.decl_map);
+ if (id.debug_map)
+ pointer_map_destroy (id.debug_map);
return copy;
}
return NULL;
}
-bool
+DEBUG_FUNCTION bool
debug_find_tree (tree top, tree search)
{
return walk_tree_without_duplicates (&top, debug_find_tree_1, search) != 0;
declare_inline_vars (tree block, tree vars)
{
tree t;
- for (t = vars; t; t = TREE_CHAIN (t))
+ for (t = vars; t; t = DECL_CHAIN (t))
{
DECL_SEEN_IN_BIND_EXPR_P (t) = 1;
gcc_assert (!TREE_STATIC (t) && !TREE_ASM_WRITTEN (t));
- cfun->local_decls = tree_cons (NULL_TREE, t, cfun->local_decls);
+ add_local_decl (cfun, t);
}
if (block)
DECL_IGNORED_P (copy) = DECL_IGNORED_P (decl);
/* Set the DECL_ABSTRACT_ORIGIN so the debugging routines know what
- declaration inspired this copy. */
+ declaration inspired this copy. */
DECL_ABSTRACT_ORIGIN (copy) = DECL_ORIGIN (decl);
/* The new variable/label has no RTL, yet. */
if (CODE_CONTAINS_STRUCT (TREE_CODE (copy), TS_DECL_WRTL)
&& !TREE_STATIC (copy) && !DECL_EXTERNAL (copy))
- SET_DECL_RTL (copy, NULL_RTX);
-
+ SET_DECL_RTL (copy, 0);
+
/* These args would always appear unused, if not for this. */
TREE_USED (copy) = 1;
new function. */
DECL_CONTEXT (copy) = id->dst_fn;
+ if (TREE_CODE (decl) == VAR_DECL
+ /* C++ clones functions during parsing, before
+ referenced_vars. */
+ && gimple_referenced_vars (DECL_STRUCT_FUNCTION (id->src_fn))
+ && referenced_var_lookup (DECL_STRUCT_FUNCTION (id->src_fn),
+ DECL_UID (decl)))
+ add_referenced_var (copy);
+
return copy;
}
type = TREE_TYPE (decl);
- copy = build_decl (VAR_DECL, DECL_NAME (decl), type);
+ copy = build_decl (DECL_SOURCE_LOCATION (id->dst_fn),
+ VAR_DECL, DECL_NAME (decl), type);
+ if (DECL_PT_UID_SET_P (decl))
+ SET_DECL_PT_UID (copy, DECL_PT_UID (decl));
TREE_ADDRESSABLE (copy) = TREE_ADDRESSABLE (decl);
TREE_READONLY (copy) = TREE_READONLY (decl);
TREE_THIS_VOLATILE (copy) = TREE_THIS_VOLATILE (decl);
DECL_GIMPLE_REG_P (copy) = DECL_GIMPLE_REG_P (decl);
- DECL_NO_TBAA_P (copy) = DECL_NO_TBAA_P (decl);
return copy_decl_for_dup_finish (id, decl, copy);
}
if (DECL_BY_REFERENCE (decl))
type = TREE_TYPE (type);
- copy = build_decl (VAR_DECL, DECL_NAME (decl), type);
+ copy = build_decl (DECL_SOURCE_LOCATION (id->dst_fn),
+ VAR_DECL, DECL_NAME (decl), type);
+ if (DECL_PT_UID_SET_P (decl))
+ SET_DECL_PT_UID (copy, DECL_PT_UID (decl));
TREE_READONLY (copy) = TREE_READONLY (decl);
TREE_THIS_VOLATILE (copy) = TREE_THIS_VOLATILE (decl);
if (!DECL_BY_REFERENCE (decl))
{
TREE_ADDRESSABLE (copy) = TREE_ADDRESSABLE (decl);
DECL_GIMPLE_REG_P (copy) = DECL_GIMPLE_REG_P (decl);
- DECL_NO_TBAA_P (copy) = DECL_NO_TBAA_P (decl);
}
return copy_decl_for_dup_finish (id, decl, copy);
/* Return a copy of the function's argument tree. */
static tree
-copy_arguments_for_versioning (tree orig_parm, copy_body_data * id)
+copy_arguments_for_versioning (tree orig_parm, copy_body_data * id,
+ bitmap args_to_skip, tree *vars)
{
- tree *arg_copy, *parg;
+ tree arg, *parg;
+ tree new_parm = NULL;
+ int i = 0;
- arg_copy = &orig_parm;
- for (parg = arg_copy; *parg; parg = &TREE_CHAIN (*parg))
- {
- tree new_tree = remap_decl (*parg, id);
- lang_hooks.dup_lang_specific_decl (new_tree);
- TREE_CHAIN (new_tree) = TREE_CHAIN (*parg);
- *parg = new_tree;
- }
- return orig_parm;
+ parg = &new_parm;
+
+ for (arg = orig_parm; arg; arg = DECL_CHAIN (arg), i++)
+ if (!args_to_skip || !bitmap_bit_p (args_to_skip, i))
+ {
+ tree new_tree = remap_decl (arg, id);
+ if (TREE_CODE (new_tree) != PARM_DECL)
+ new_tree = id->copy_decl (arg, id);
+ lang_hooks.dup_lang_specific_decl (new_tree);
+ *parg = new_tree;
+ parg = &DECL_CHAIN (new_tree);
+ }
+ else if (!pointer_map_contains (id->decl_map, arg))
+ {
+ /* Make an equivalent VAR_DECL. If the argument was used
+ as temporary variable later in function, the uses will be
+ replaced by local variable. */
+ tree var = copy_decl_to_var (arg, id);
+ add_referenced_var (var);
+ insert_decl_map (id, arg, var);
+ /* Declare this new variable. */
+ DECL_CHAIN (var) = *vars;
+ *vars = var;
+ }
+ return new_parm;
}
/* Return a copy of the function's static chain. */
tree *chain_copy, *pvar;
chain_copy = &static_chain;
- for (pvar = chain_copy; *pvar; pvar = &TREE_CHAIN (*pvar))
+ for (pvar = chain_copy; *pvar; pvar = &DECL_CHAIN (*pvar))
{
tree new_tree = remap_decl (*pvar, id);
lang_hooks.dup_lang_specific_decl (new_tree);
- TREE_CHAIN (new_tree) = TREE_CHAIN (*pvar);
+ DECL_CHAIN (new_tree) = DECL_CHAIN (*pvar);
*pvar = new_tree;
}
return static_chain;
/* Return true if the function is allowed to be versioned.
This is a guard for the versioning functionality. */
+
bool
tree_versionable_function_p (tree fndecl)
{
- if (fndecl == NULL_TREE)
- return false;
- /* ??? There are cases where a function is
- uninlinable but can be versioned. */
- if (!tree_inlinable_function_p (fndecl))
- return false;
-
- return true;
+ return (!lookup_attribute ("noclone", DECL_ATTRIBUTES (fndecl))
+ && copy_forbidden (DECL_STRUCT_FUNCTION (fndecl), fndecl) == NULL);
+}
+
+/* Delete all unreachable basic blocks and update callgraph.
+ Doing so is somewhat nontrivial because we need to update all clones and
+ remove inline function that become unreachable. */
+
+static bool
+delete_unreachable_blocks_update_callgraph (copy_body_data *id)
+{
+ bool changed = false;
+ basic_block b, next_bb;
+
+ find_unreachable_blocks ();
+
+ /* Delete all unreachable basic blocks. */
+
+ for (b = ENTRY_BLOCK_PTR->next_bb; b != EXIT_BLOCK_PTR; b = next_bb)
+ {
+ next_bb = b->next_bb;
+
+ if (!(b->flags & BB_REACHABLE))
+ {
+ gimple_stmt_iterator bsi;
+
+ for (bsi = gsi_start_bb (b); !gsi_end_p (bsi); gsi_next (&bsi))
+ if (gimple_code (gsi_stmt (bsi)) == GIMPLE_CALL)
+ {
+ struct cgraph_edge *e;
+ struct cgraph_node *node;
+
+ if ((e = cgraph_edge (id->dst_node, gsi_stmt (bsi))) != NULL)
+ {
+ if (!e->inline_failed)
+ cgraph_remove_node_and_inline_clones (e->callee);
+ else
+ cgraph_remove_edge (e);
+ }
+ if (id->transform_call_graph_edges == CB_CGE_MOVE_CLONES
+ && id->dst_node->clones)
+ for (node = id->dst_node->clones; node != id->dst_node;)
+ {
+ if ((e = cgraph_edge (node, gsi_stmt (bsi))) != NULL)
+ {
+ if (!e->inline_failed)
+ cgraph_remove_node_and_inline_clones (e->callee);
+ else
+ cgraph_remove_edge (e);
+ }
+
+ if (node->clones)
+ node = node->clones;
+ else if (node->next_sibling_clone)
+ node = node->next_sibling_clone;
+ else
+ {
+ while (node != id->dst_node && !node->next_sibling_clone)
+ node = node->clone_of;
+ if (node != id->dst_node)
+ node = node->next_sibling_clone;
+ }
+ }
+ }
+ delete_basic_block (b);
+ changed = true;
+ }
+ }
+
+ return changed;
+}
+
+/* Update clone info after duplication. */
+
+static void
+update_clone_info (copy_body_data * id)
+{
+ struct cgraph_node *node;
+ if (!id->dst_node->clones)
+ return;
+ for (node = id->dst_node->clones; node != id->dst_node;)
+ {
+ /* First update replace maps to match the new body. */
+ if (node->clone.tree_map)
+ {
+ unsigned int i;
+ for (i = 0; i < VEC_length (ipa_replace_map_p, node->clone.tree_map); i++)
+ {
+ struct ipa_replace_map *replace_info;
+ replace_info = VEC_index (ipa_replace_map_p, node->clone.tree_map, i);
+ walk_tree (&replace_info->old_tree, copy_tree_body_r, id, NULL);
+ walk_tree (&replace_info->new_tree, copy_tree_body_r, id, NULL);
+ }
+ }
+ if (node->clones)
+ node = node->clones;
+ else if (node->next_sibling_clone)
+ node = node->next_sibling_clone;
+ else
+ {
+ while (node != id->dst_node && !node->next_sibling_clone)
+ node = node->clone_of;
+ if (node != id->dst_node)
+ node = node->next_sibling_clone;
+ }
+ }
}
/* Create a copy of a function's tree.
OLD_DECL and NEW_DECL are FUNCTION_DECL tree nodes
of the original function and the new copied function
- respectively. In case we want to replace a DECL
- tree with another tree while duplicating the function's
- body, TREE_MAP represents the mapping between these
+ respectively. In case we want to replace a DECL
+ tree with another tree while duplicating the function's
+ body, TREE_MAP represents the mapping between these
trees. If UPDATE_CLONES is set, the call_stmt fields
- of edges of clones of the function will be updated. */
+ of edges of clones of the function will be updated.
+
+ If non-NULL ARGS_TO_SKIP determine function parameters to remove
+ from new version.
+ If SKIP_RETURN is true, the new version will return void.
+ If non-NULL BLOCK_TO_COPY determine what basic blocks to copy.
+ If non_NULL NEW_ENTRY determine new entry BB of the clone.
+*/
void
-tree_function_versioning (tree old_decl, tree new_decl, varray_type tree_map,
- bool update_clones)
+tree_function_versioning (tree old_decl, tree new_decl,
+ VEC(ipa_replace_map_p,gc)* tree_map,
+ bool update_clones, bitmap args_to_skip,
+ bool skip_return, bitmap blocks_to_copy,
+ basic_block new_entry)
{
struct cgraph_node *old_version_node;
struct cgraph_node *new_version_node;
tree p;
unsigned i;
struct ipa_replace_map *replace_info;
- basic_block old_entry_block;
+ basic_block old_entry_block, bb;
VEC (gimple, heap) *init_stmts = VEC_alloc (gimple, heap, 10);
- tree t_step;
tree old_current_function_decl = current_function_decl;
tree vars = NULL_TREE;
&& TREE_CODE (new_decl) == FUNCTION_DECL);
DECL_POSSIBLY_INLINED (old_decl) = 1;
- old_version_node = cgraph_node (old_decl);
- new_version_node = cgraph_node (new_decl);
+ old_version_node = cgraph_get_node (old_decl);
+ gcc_checking_assert (old_version_node);
+ new_version_node = cgraph_get_node (new_decl);
+ gcc_checking_assert (new_version_node);
+
+ /* Copy over debug args. */
+ if (DECL_HAS_DEBUG_ARGS_P (old_decl))
+ {
+ VEC(tree, gc) **new_debug_args, **old_debug_args;
+ gcc_checking_assert (decl_debug_args_lookup (new_decl) == NULL);
+ DECL_HAS_DEBUG_ARGS_P (new_decl) = 0;
+ old_debug_args = decl_debug_args_lookup (old_decl);
+ if (old_debug_args)
+ {
+ new_debug_args = decl_debug_args_insert (new_decl);
+ *new_debug_args = VEC_copy (tree, gc, *old_debug_args);
+ }
+ }
+
+ /* Output the inlining info for this abstract function, since it has been
+ inlined. If we don't do this now, we can lose the information about the
+ variables in the function when the blocks get blown away as soon as we
+ remove the cgraph node. */
+ (*debug_hooks->outlining_inline_function) (old_decl);
DECL_ARTIFICIAL (new_decl) = 1;
DECL_ABSTRACT_ORIGIN (new_decl) = DECL_ORIGIN (old_decl);
+ DECL_FUNCTION_PERSONALITY (new_decl) = DECL_FUNCTION_PERSONALITY (old_decl);
/* Prepare the data structures for the tree copy. */
memset (&id, 0, sizeof (id));
/* Generate a new name for the new version. */
- if (!update_clones)
- {
- DECL_NAME (new_decl) = create_tmp_var_name (NULL);
- SET_DECL_ASSEMBLER_NAME (new_decl, DECL_NAME (new_decl));
- SET_DECL_RTL (new_decl, NULL_RTX);
- id.statements_to_fold = pointer_set_create ();
- }
-
+ id.statements_to_fold = pointer_set_create ();
+
id.decl_map = pointer_map_create ();
+ id.debug_map = NULL;
id.src_fn = old_decl;
id.dst_fn = new_decl;
id.src_node = old_version_node;
id.dst_node = new_version_node;
id.src_cfun = DECL_STRUCT_FUNCTION (old_decl);
-
+ if (id.src_node->ipa_transforms_to_apply)
+ {
+ VEC(ipa_opt_pass,heap) * old_transforms_to_apply = id.dst_node->ipa_transforms_to_apply;
+ unsigned int i;
+
+ id.dst_node->ipa_transforms_to_apply = VEC_copy (ipa_opt_pass, heap,
+ id.src_node->ipa_transforms_to_apply);
+ for (i = 0; i < VEC_length (ipa_opt_pass, old_transforms_to_apply); i++)
+ VEC_safe_push (ipa_opt_pass, heap, id.dst_node->ipa_transforms_to_apply,
+ VEC_index (ipa_opt_pass,
+ old_transforms_to_apply,
+ i));
+ }
+
id.copy_decl = copy_decl_no_change;
id.transform_call_graph_edges
= update_clones ? CB_CGE_MOVE_CLONES : CB_CGE_MOVE;
old_entry_block = ENTRY_BLOCK_PTR_FOR_FUNCTION
(DECL_STRUCT_FUNCTION (old_decl));
initialize_cfun (new_decl, old_decl,
- old_entry_block->count,
- old_entry_block->frequency);
+ old_entry_block->count);
+ DECL_STRUCT_FUNCTION (new_decl)->gimple_df->ipa_pta
+ = id.src_cfun->gimple_df->ipa_pta;
push_cfun (DECL_STRUCT_FUNCTION (new_decl));
-
+
/* Copy the function's static chain. */
p = DECL_STRUCT_FUNCTION (old_decl)->static_chain_decl;
if (p)
DECL_STRUCT_FUNCTION (new_decl)->static_chain_decl =
copy_static_chain (DECL_STRUCT_FUNCTION (old_decl)->static_chain_decl,
&id);
- /* Copy the function's arguments. */
- if (DECL_ARGUMENTS (old_decl) != NULL_TREE)
- DECL_ARGUMENTS (new_decl) =
- copy_arguments_for_versioning (DECL_ARGUMENTS (old_decl), &id);
-
- DECL_INITIAL (new_decl) = remap_blocks (DECL_INITIAL (id.src_fn), &id);
-
- /* Renumber the lexical scoping (non-code) blocks consecutively. */
- number_blocks (id.dst_fn);
-
+
/* If there's a tree_map, prepare for substitution. */
if (tree_map)
- for (i = 0; i < VARRAY_ACTIVE_SIZE (tree_map); i++)
+ for (i = 0; i < VEC_length (ipa_replace_map_p, tree_map); i++)
{
gimple init;
- replace_info
- = (struct ipa_replace_map *) VARRAY_GENERIC_PTR (tree_map, i);
+ replace_info = VEC_index (ipa_replace_map_p, tree_map, i);
if (replace_info->replace_p)
{
tree op = replace_info->new_tree;
+ if (!replace_info->old_tree)
+ {
+ int i = replace_info->parm_num;
+ tree parm;
+ for (parm = DECL_ARGUMENTS (old_decl); i; parm = DECL_CHAIN (parm))
+ i --;
+ replace_info->old_tree = parm;
+ }
+
STRIP_NOPS (op);
if (TREE_CODE (op) == VIEW_CONVERT_EXPR)
op = TREE_OPERAND (op, 0);
-
+
if (TREE_CODE (op) == ADDR_EXPR)
{
op = TREE_OPERAND (op, 0);
VEC_safe_push (gimple, heap, init_stmts, init);
}
}
-
+ /* Copy the function's arguments. */
+ if (DECL_ARGUMENTS (old_decl) != NULL_TREE)
+ DECL_ARGUMENTS (new_decl) =
+ copy_arguments_for_versioning (DECL_ARGUMENTS (old_decl), &id,
+ args_to_skip, &vars);
+
+ DECL_INITIAL (new_decl) = remap_blocks (DECL_INITIAL (id.src_fn), &id);
+ BLOCK_SUPERCONTEXT (DECL_INITIAL (new_decl)) = new_decl;
+
declare_inline_vars (DECL_INITIAL (new_decl), vars);
- if (DECL_STRUCT_FUNCTION (old_decl)->local_decls != NULL_TREE)
+
+ if (!VEC_empty (tree, DECL_STRUCT_FUNCTION (old_decl)->local_decls))
/* Add local vars. */
- for (t_step = DECL_STRUCT_FUNCTION (old_decl)->local_decls;
- t_step; t_step = TREE_CHAIN (t_step))
- {
- tree var = TREE_VALUE (t_step);
- if (TREE_STATIC (var) && !TREE_ASM_WRITTEN (var))
- cfun->local_decls = tree_cons (NULL_TREE, var, cfun->local_decls);
- else
- cfun->local_decls =
- tree_cons (NULL_TREE, remap_decl (var, &id),
- cfun->local_decls);
- }
-
- /* Copy the Function's body. */
- copy_body (&id, old_entry_block->count, old_entry_block->frequency, ENTRY_BLOCK_PTR, EXIT_BLOCK_PTR);
-
- if (DECL_RESULT (old_decl) != NULL_TREE)
+ add_local_variables (DECL_STRUCT_FUNCTION (old_decl), cfun, &id, false);
+
+ if (DECL_RESULT (old_decl) == NULL_TREE)
+ ;
+ else if (skip_return && !VOID_TYPE_P (TREE_TYPE (DECL_RESULT (old_decl))))
+ {
+ DECL_RESULT (new_decl)
+ = build_decl (DECL_SOURCE_LOCATION (DECL_RESULT (old_decl)),
+ RESULT_DECL, NULL_TREE, void_type_node);
+ DECL_CONTEXT (DECL_RESULT (new_decl)) = new_decl;
+ cfun->returns_struct = 0;
+ cfun->returns_pcc_struct = 0;
+ }
+ else
{
- tree *res_decl = &DECL_RESULT (old_decl);
- DECL_RESULT (new_decl) = remap_decl (*res_decl, &id);
+ tree old_name;
+ DECL_RESULT (new_decl) = remap_decl (DECL_RESULT (old_decl), &id);
lang_hooks.dup_lang_specific_decl (DECL_RESULT (new_decl));
+ if (gimple_in_ssa_p (id.src_cfun)
+ && DECL_BY_REFERENCE (DECL_RESULT (old_decl))
+ && (old_name
+ = gimple_default_def (id.src_cfun, DECL_RESULT (old_decl))))
+ {
+ tree new_name = make_ssa_name (DECL_RESULT (new_decl), NULL);
+ insert_decl_map (&id, old_name, new_name);
+ SSA_NAME_DEF_STMT (new_name) = gimple_build_nop ();
+ set_default_def (DECL_RESULT (new_decl), new_name);
+ }
}
-
+
+ /* Copy the Function's body. */
+ copy_body (&id, old_entry_block->count, REG_BR_PROB_BASE,
+ ENTRY_BLOCK_PTR, EXIT_BLOCK_PTR, blocks_to_copy, new_entry);
+
/* Renumber the lexical scoping (non-code) blocks consecutively. */
number_blocks (new_decl);
- if (VEC_length (gimple, init_stmts))
+ /* We want to create the BB unconditionally, so that the addition of
+ debug stmts doesn't affect BB count, which may in the end cause
+ codegen differences. */
+ bb = split_edge (single_succ_edge (ENTRY_BLOCK_PTR));
+ while (VEC_length (gimple, init_stmts))
+ insert_init_stmt (&id, bb, VEC_pop (gimple, init_stmts));
+ update_clone_info (&id);
+
+ /* Remap the nonlocal_goto_save_area, if any. */
+ if (cfun->nonlocal_goto_save_area)
{
- basic_block bb = split_edge (single_succ_edge (ENTRY_BLOCK_PTR));
- while (VEC_length (gimple, init_stmts))
- insert_init_stmt (bb, VEC_pop (gimple, init_stmts));
+ struct walk_stmt_info wi;
+
+ memset (&wi, 0, sizeof (wi));
+ wi.info = &id;
+ walk_tree (&cfun->nonlocal_goto_save_area, remap_gimple_op_r, &wi, NULL);
}
/* Clean up. */
pointer_map_destroy (id.decl_map);
- if (!update_clones)
- {
- fold_marked_statements (0, id.statements_to_fold);
- pointer_set_destroy (id.statements_to_fold);
- fold_cond_expr_cond ();
- }
- if (gimple_in_ssa_p (cfun))
+ if (id.debug_map)
+ pointer_map_destroy (id.debug_map);
+ free_dominance_info (CDI_DOMINATORS);
+ free_dominance_info (CDI_POST_DOMINATORS);
+
+ fold_marked_statements (0, id.statements_to_fold);
+ pointer_set_destroy (id.statements_to_fold);
+ fold_cond_expr_cond ();
+ delete_unreachable_blocks_update_callgraph (&id);
+ if (id.dst_node->analyzed)
+ cgraph_rebuild_references ();
+ update_ssa (TODO_update_ssa);
+
+ /* After partial cloning we need to rescale frequencies, so they are
+ within proper range in the cloned function. */
+ if (new_entry)
{
- free_dominance_info (CDI_DOMINATORS);
- free_dominance_info (CDI_POST_DOMINATORS);
- if (!update_clones)
- delete_unreachable_blocks ();
- update_ssa (TODO_update_ssa);
- if (!update_clones)
+ struct cgraph_edge *e;
+ rebuild_frequencies ();
+
+ new_version_node->count = ENTRY_BLOCK_PTR->count;
+ for (e = new_version_node->callees; e; e = e->next_callee)
+ {
+ basic_block bb = gimple_bb (e->call_stmt);
+ e->frequency = compute_call_stmt_bb_frequency (current_function_decl,
+ bb);
+ e->count = bb->count;
+ }
+ for (e = new_version_node->indirect_calls; e; e = e->next_callee)
{
- fold_cond_expr_cond ();
- if (need_ssa_update_p ())
- update_ssa (TODO_update_ssa);
+ basic_block bb = gimple_bb (e->call_stmt);
+ e->frequency = compute_call_stmt_bb_frequency (current_function_decl,
+ bb);
+ e->count = bb->count;
}
}
+
free_dominance_info (CDI_DOMINATORS);
free_dominance_info (CDI_POST_DOMINATORS);
+
+ gcc_assert (!id.debug_stmts);
VEC_free (gimple, heap, init_stmts);
pop_cfun ();
current_function_decl = old_current_function_decl;
return;
}
+/* EXP is CALL_EXPR present in a GENERIC expression tree. Try to integrate
+ the callee and return the inlined body on success. */
+
+tree
+maybe_inline_call_in_expr (tree exp)
+{
+ tree fn = get_callee_fndecl (exp);
+
+ /* We can only try to inline "const" functions. */
+ if (fn && TREE_READONLY (fn) && DECL_SAVED_TREE (fn))
+ {
+ struct pointer_map_t *decl_map = pointer_map_create ();
+ call_expr_arg_iterator iter;
+ copy_body_data id;
+ tree param, arg, t;
+
+ /* Remap the parameters. */
+ for (param = DECL_ARGUMENTS (fn), arg = first_call_expr_arg (exp, &iter);
+ param;
+ param = DECL_CHAIN (param), arg = next_call_expr_arg (&iter))
+ *pointer_map_insert (decl_map, param) = arg;
+
+ memset (&id, 0, sizeof (id));
+ id.src_fn = fn;
+ id.dst_fn = current_function_decl;
+ id.src_cfun = DECL_STRUCT_FUNCTION (fn);
+ id.decl_map = decl_map;
+
+ id.copy_decl = copy_decl_no_change;
+ id.transform_call_graph_edges = CB_CGE_DUPLICATE;
+ id.transform_new_cfg = false;
+ id.transform_return_to_modify = true;
+ id.transform_lang_insert_block = NULL;
+
+ /* Make sure not to unshare trees behind the front-end's back
+ since front-end specific mechanisms may rely on sharing. */
+ id.regimplify = false;
+ id.do_not_unshare = true;
+
+ /* We're not inside any EH region. */
+ id.eh_lp_nr = 0;
+
+ t = copy_tree_body (&id);
+ pointer_map_destroy (decl_map);
+
+ /* We can only return something suitable for use in a GENERIC
+ expression tree. */
+ if (TREE_CODE (t) == MODIFY_EXPR)
+ return TREE_OPERAND (t, 1);
+ }
+
+ return NULL_TREE;
+}
+
/* Duplicate a type, fields and all. */
tree
id.dst_fn = current_function_decl;
id.src_cfun = cfun;
id.decl_map = pointer_map_create ();
+ id.debug_map = NULL;
id.copy_decl = copy_decl_no_change;
type = remap_type_1 (type, &id);
pointer_map_destroy (id.decl_map);
+ if (id.debug_map)
+ pointer_map_destroy (id.debug_map);
TYPE_CANONICAL (type) = type;
return type;
}
-
-/* Return whether it is safe to inline a function because it used different
- target specific options or different optimization options. */
-bool
-tree_can_inline_p (tree caller, tree callee)
-{
- /* Don't inline a function with a higher optimization level than the
- caller, or with different space constraints (hot/cold functions). */
- tree caller_tree = DECL_FUNCTION_SPECIFIC_OPTIMIZATION (caller);
- tree callee_tree = DECL_FUNCTION_SPECIFIC_OPTIMIZATION (callee);
-
- if (caller_tree != callee_tree)
- {
- struct cl_optimization *caller_opt
- = TREE_OPTIMIZATION ((caller_tree)
- ? caller_tree
- : optimization_default_node);
-
- struct cl_optimization *callee_opt
- = TREE_OPTIMIZATION ((callee_tree)
- ? callee_tree
- : optimization_default_node);
-
- if ((caller_opt->optimize > callee_opt->optimize)
- || (caller_opt->optimize_size != callee_opt->optimize_size))
- return false;
- }
-
- /* Allow the backend to decide if inlining is ok. */
- return targetm.target_option.can_inline_p (caller, callee);
-}
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