/* Gimple IR support functions.
- Copyright 2007, 2008 Free Software Foundation, Inc.
+ Copyright 2007, 2008, 2009 Free Software Foundation, Inc.
Contributed by Aldy Hernandez <aldyh@redhat.com>
This file is part of GCC.
#include "tm.h"
#include "tree.h"
#include "ggc.h"
-#include "errors.h"
#include "hard-reg-set.h"
#include "basic-block.h"
#include "gimple.h"
+#include "toplev.h"
#include "diagnostic.h"
#include "tree-flow.h"
#include "value-prof.h"
gimple
gimple_build_return (tree retval)
{
- gimple s = gimple_build_with_ops (GIMPLE_RETURN, 0, 1);
+ gimple s = gimple_build_with_ops (GIMPLE_RETURN, ERROR_MARK, 1);
if (retval)
gimple_return_set_retval (s, retval);
return s;
static inline gimple
gimple_build_call_1 (tree fn, unsigned nargs)
{
- gimple s = gimple_build_with_ops (GIMPLE_CALL, 0, nargs + 3);
+ gimple s = gimple_build_with_ops (GIMPLE_CALL, ERROR_MARK, nargs + 3);
if (TREE_CODE (fn) == FUNCTION_DECL)
fn = build_fold_addr_expr (fn);
gimple_set_op (s, 1, fn);
gimple
gimple_build_label (tree label)
{
- gimple p = gimple_build_with_ops (GIMPLE_LABEL, 0, 1);
+ gimple p = gimple_build_with_ops (GIMPLE_LABEL, ERROR_MARK, 1);
gimple_label_set_label (p, label);
return p;
}
gimple
gimple_build_goto (tree dest)
{
- gimple p = gimple_build_with_ops (GIMPLE_GOTO, 0, 1);
+ gimple p = gimple_build_with_ops (GIMPLE_GOTO, ERROR_MARK, 1);
gimple_goto_set_dest (p, dest);
return p;
}
gimple p;
int size = strlen (string);
- p = gimple_build_with_ops (GIMPLE_ASM, 0, ninputs + noutputs + nclobbers);
+ p = gimple_build_with_ops (GIMPLE_ASM, ERROR_MARK,
+ ninputs + noutputs + nclobbers);
p->gimple_asm.ni = ninputs;
p->gimple_asm.no = noutputs;
gimple_build_switch_1 (unsigned nlabels, tree index, tree default_label)
{
/* nlabels + 1 default label + 1 index. */
- gimple p = gimple_build_with_ops (GIMPLE_SWITCH, 0, nlabels + 1 + 1);
+ gimple p = gimple_build_with_ops (GIMPLE_SWITCH, ERROR_MARK,
+ nlabels + 1 + 1);
gimple_switch_set_index (p, index);
gimple_switch_set_default_label (p, default_label);
return p;
gimple
gimple_build_cdt (tree type, tree ptr)
{
- gimple p = gimple_build_with_ops (GIMPLE_CHANGE_DYNAMIC_TYPE, 0, 2);
+ gimple p = gimple_build_with_ops (GIMPLE_CHANGE_DYNAMIC_TYPE, ERROR_MARK, 2);
gimple_cdt_set_new_type (p, type);
gimple_cdt_set_location (p, ptr);
for (i = 0; i < num_ops; i++)
gimple_set_op (copy, i, unshare_expr (gimple_op (stmt, i)));
- /* Clear out SSA operand vectors on COPY. Note that we cannot
- call the API functions for setting addresses_taken, stores
- and loads. These functions free the previous values, and we
- cannot do that on COPY as it will affect the original
- statement. */
+ /* Clear out SSA operand vectors on COPY. */
if (gimple_has_ops (stmt))
{
gimple_set_def_ops (copy, NULL);
gimple_set_use_ops (copy, NULL);
- copy->gsops.opbase.addresses_taken = NULL;
}
if (gimple_has_mem_ops (stmt))
gcc_assert (*num_uses_p >= *num_loads_p + *num_stores_p);
}
+/* From a tree operand OP return the base of a load or store operation
+ or NULL_TREE if OP is not a load or a store. */
+
+static tree
+get_base_loadstore (tree op)
+{
+ while (handled_component_p (op))
+ op = TREE_OPERAND (op, 0);
+ if (DECL_P (op)
+ || INDIRECT_REF_P (op)
+ || TREE_CODE (op) == TARGET_MEM_REF)
+ return op;
+ return NULL_TREE;
+}
+
+/* For the statement STMT call the callbacks VISIT_LOAD, VISIT_STORE and
+ VISIT_ADDR if non-NULL on loads, store and address-taken operands
+ passing the STMT, the base of the operand and DATA to it. The base
+ will be either a decl, an indirect reference (including TARGET_MEM_REF)
+ or the argument of an address expression.
+ Returns the results of these callbacks or'ed. */
+
+bool
+walk_stmt_load_store_addr_ops (gimple stmt, void *data,
+ bool (*visit_load)(gimple, tree, void *),
+ bool (*visit_store)(gimple, tree, void *),
+ bool (*visit_addr)(gimple, tree, void *))
+{
+ bool ret = false;
+ unsigned i;
+ if (gimple_assign_single_p (stmt))
+ {
+ tree lhs, rhs;
+ if (visit_store)
+ {
+ lhs = get_base_loadstore (gimple_assign_lhs (stmt));
+ if (lhs)
+ ret |= visit_store (stmt, lhs, data);
+ }
+ rhs = gimple_assign_rhs1 (stmt);
+ while (handled_component_p (rhs))
+ rhs = TREE_OPERAND (rhs, 0);
+ if (visit_addr)
+ {
+ if (TREE_CODE (rhs) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (rhs, 0), data);
+ else if (TREE_CODE (rhs) == TARGET_MEM_REF
+ && TREE_CODE (TMR_BASE (rhs)) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (TMR_BASE (rhs), 0), data);
+ else if (TREE_CODE (rhs) == OBJ_TYPE_REF
+ && TREE_CODE (OBJ_TYPE_REF_OBJECT (rhs)) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (OBJ_TYPE_REF_OBJECT (rhs),
+ 0), data);
+ }
+ if (visit_load)
+ {
+ rhs = get_base_loadstore (rhs);
+ if (rhs)
+ ret |= visit_load (stmt, rhs, data);
+ }
+ }
+ else if (visit_addr
+ && (is_gimple_assign (stmt)
+ || gimple_code (stmt) == GIMPLE_COND
+ || gimple_code (stmt) == GIMPLE_CHANGE_DYNAMIC_TYPE))
+ {
+ for (i = 0; i < gimple_num_ops (stmt); ++i)
+ if (gimple_op (stmt, i)
+ && TREE_CODE (gimple_op (stmt, i)) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (gimple_op (stmt, i), 0), data);
+ }
+ else if (is_gimple_call (stmt))
+ {
+ if (visit_store)
+ {
+ tree lhs = gimple_call_lhs (stmt);
+ if (lhs)
+ {
+ lhs = get_base_loadstore (lhs);
+ if (lhs)
+ ret |= visit_store (stmt, lhs, data);
+ }
+ }
+ if (visit_load || visit_addr)
+ for (i = 0; i < gimple_call_num_args (stmt); ++i)
+ {
+ tree rhs = gimple_call_arg (stmt, i);
+ if (visit_addr
+ && TREE_CODE (rhs) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (rhs, 0), data);
+ else if (visit_load)
+ {
+ rhs = get_base_loadstore (rhs);
+ if (rhs)
+ ret |= visit_load (stmt, rhs, data);
+ }
+ }
+ if (visit_addr
+ && gimple_call_chain (stmt)
+ && TREE_CODE (gimple_call_chain (stmt)) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (gimple_call_chain (stmt), 0),
+ data);
+ }
+ else if (gimple_code (stmt) == GIMPLE_ASM)
+ {
+ unsigned noutputs;
+ const char *constraint;
+ const char **oconstraints;
+ bool allows_mem, allows_reg, is_inout;
+ noutputs = gimple_asm_noutputs (stmt);
+ oconstraints = XALLOCAVEC (const char *, noutputs);
+ if (visit_store || visit_addr)
+ for (i = 0; i < gimple_asm_noutputs (stmt); ++i)
+ {
+ tree link = gimple_asm_output_op (stmt, i);
+ tree op = get_base_loadstore (TREE_VALUE (link));
+ if (op && visit_store)
+ ret |= visit_store (stmt, op, data);
+ if (visit_addr)
+ {
+ constraint = TREE_STRING_POINTER
+ (TREE_VALUE (TREE_PURPOSE (link)));
+ oconstraints[i] = constraint;
+ parse_output_constraint (&constraint, i, 0, 0, &allows_mem,
+ &allows_reg, &is_inout);
+ if (op && !allows_reg && allows_mem)
+ ret |= visit_addr (stmt, op, data);
+ }
+ }
+ if (visit_load || visit_addr)
+ for (i = 0; i < gimple_asm_ninputs (stmt); ++i)
+ {
+ tree link = gimple_asm_input_op (stmt, i);
+ tree op = TREE_VALUE (link);
+ if (visit_addr
+ && TREE_CODE (op) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data);
+ else if (visit_load || visit_addr)
+ {
+ op = get_base_loadstore (op);
+ if (op)
+ {
+ if (visit_load)
+ ret |= visit_load (stmt, op, data);
+ if (visit_addr)
+ {
+ constraint = TREE_STRING_POINTER
+ (TREE_VALUE (TREE_PURPOSE (link)));
+ parse_input_constraint (&constraint, 0, 0, noutputs,
+ 0, oconstraints,
+ &allows_mem, &allows_reg);
+ if (!allows_reg && allows_mem)
+ ret |= visit_addr (stmt, op, data);
+ }
+ }
+ }
+ }
+ }
+ else if (gimple_code (stmt) == GIMPLE_RETURN)
+ {
+ tree op = gimple_return_retval (stmt);
+ if (op)
+ {
+ if (visit_addr
+ && TREE_CODE (op) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data);
+ else if (visit_load)
+ {
+ op = get_base_loadstore (op);
+ if (op)
+ ret |= visit_load (stmt, op, data);
+ }
+ }
+ }
+ else if (visit_addr
+ && gimple_code (stmt) == GIMPLE_PHI)
+ {
+ for (i = 0; i < gimple_phi_num_args (stmt); ++i)
+ {
+ tree op = PHI_ARG_DEF (stmt, i);
+ if (TREE_CODE (op) == ADDR_EXPR)
+ ret |= visit_addr (stmt, TREE_OPERAND (op, 0), data);
+ }
+ }
+
+ return ret;
+}
+
+/* Like walk_stmt_load_store_addr_ops but with NULL visit_addr. IPA-CP
+ should make a faster clone for this case. */
+
+bool
+walk_stmt_load_store_ops (gimple stmt, void *data,
+ bool (*visit_load)(gimple, tree, void *),
+ bool (*visit_store)(gimple, tree, void *))
+{
+ return walk_stmt_load_store_addr_ops (stmt, data,
+ visit_load, visit_store, NULL);
+}
+
+/* Helper for gimple_ior_addresses_taken_1. */
+
+static bool
+gimple_ior_addresses_taken_1 (gimple stmt ATTRIBUTE_UNUSED,
+ tree addr, void *data)
+{
+ bitmap addresses_taken = (bitmap)data;
+ while (handled_component_p (addr))
+ addr = TREE_OPERAND (addr, 0);
+ if (DECL_P (addr))
+ {
+ bitmap_set_bit (addresses_taken, DECL_UID (addr));
+ return true;
+ }
+ return false;
+}
+
+/* Set the bit for the uid of all decls that have their address taken
+ in STMT in the ADDRESSES_TAKEN bitmap. Returns true if there
+ were any in this stmt. */
+
+bool
+gimple_ior_addresses_taken (bitmap addresses_taken, gimple stmt)
+{
+ return walk_stmt_load_store_addr_ops (stmt, addresses_taken, NULL, NULL,
+ gimple_ior_addresses_taken_1);
+}
+
#include "gt-gimple.h"
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