#include "tree-dump.h"
#include "tree-pass.h"
-
-/* Remove edge E and remove the corresponding arguments from the PHI nodes
- in E's destination block. */
-
-void
-ssa_remove_edge (edge e)
-{
- tree phi, next;
-
- /* Remove the appropriate PHI arguments in E's destination block. */
- for (phi = phi_nodes (e->dest); phi; phi = next)
- {
- next = PHI_CHAIN (phi);
- remove_phi_arg (phi, e->src);
- }
-
- remove_edge (e);
-}
-
/* Remove the corresponding arguments from the PHI nodes in E's
destination block and redirect it to DEST. Return redirected edge.
The list of removed arguments is stored in PENDING_STMT (e). */
next = PHI_CHAIN (phi);
i = phi_arg_from_edge (phi, e);
- if (i < 0)
+ if (PHI_ARG_DEF (phi, i) == NULL_TREE)
continue;
src = PHI_ARG_DEF (phi, i);
node = build_tree_list (dst, src);
*last = node;
last = &TREE_CHAIN (node);
-
- remove_phi_arg_num (phi, i);
}
e = redirect_edge_succ_nodup (e, dest);
phi = PHI_CHAIN (phi), arg = TREE_CHAIN (arg))
{
tree def = TREE_VALUE (arg);
- add_phi_arg (&phi, def, e);
+ add_phi_arg (phi, def, e);
}
PENDING_STMT (e) = NULL;
/* Return true if any of the arguments for PHI node PHI at block BB is
malformed.
- IDOM contains immediate dominator information for the flowgraph.
-
DEFINITION_BLOCK is an array of basic blocks indexed by SSA_NAME version
numbers. If DEFINITION_BLOCK[SSA_NAME_VERSION] is set, it means that the
block in that array slot contains the definition of SSA_NAME. */
{
edge e;
bool err = false;
- int i, phi_num_args = PHI_NUM_ARGS (phi);
- edge_iterator ei;
+ unsigned i, phi_num_args = PHI_NUM_ARGS (phi);
- /* Mark all the incoming edges. */
- FOR_EACH_EDGE (e, ei, bb->preds)
- e->aux = (void *) 1;
+ if (EDGE_COUNT (bb->preds) != phi_num_args)
+ {
+ error ("Incoming edge count does not match number of PHI arguments\n");
+ err = true;
+ goto error;
+ }
for (i = 0; i < phi_num_args; i++)
{
tree op = PHI_ARG_DEF (phi, i);
- e = PHI_ARG_EDGE (phi, i);
+ e = EDGE_PRED (bb, i);
+
+ if (op == NULL_TREE)
+ {
+ error ("PHI argument is missing for edge %d->%d\n",
+ e->src->index,
+ e->dest->index);
+ err = true;
+ goto error;
+ }
+
+ if (TREE_CODE (op) != SSA_NAME && !is_gimple_min_invariant (op))
+ {
+ error ("PHI argument is not SSA_NAME, or invariant");
+ err = true;
+ }
if (TREE_CODE (op) == SSA_NAME)
err = verify_use (e->src, definition_block[SSA_NAME_VERSION (op)], op,
err = true;
}
- if (e->aux == (void *) 0)
- {
- error ("PHI argument flowing through dead edge %d->%d\n",
- e->src->index, e->dest->index);
- err = true;
- }
-
- if (e->aux == (void *) 2)
- {
- error ("PHI argument duplicated for edge %d->%d\n", e->src->index,
- e->dest->index);
- err = true;
- }
-
if (err)
{
fprintf (stderr, "PHI argument\n");
print_generic_stmt (stderr, op, TDF_VOPS);
goto error;
}
-
- e->aux = (void *) 2;
- }
-
- FOR_EACH_EDGE (e, ei, bb->preds)
- {
- if (e->aux != (void *) 2)
- {
- error ("No argument flowing through edge %d->%d\n", e->src->index,
- e->dest->index);
- err = true;
- goto error;
- }
- e->aux = (void *) 0;
}
error:
for (i = 1; i < num_ssa_names; i++)
{
+ tree var;
var_ann_t ann;
struct ptr_info_def *pi;
+
ptr = ssa_name (i);
if (!ptr)
continue;
- ann = var_ann (SSA_NAME_VAR (ptr));
- pi = SSA_NAME_PTR_INFO (ptr);
/* We only care for pointers that are actually referenced in the
program. */
- if (!TREE_VISITED (ptr) || !POINTER_TYPE_P (TREE_TYPE (ptr)))
+ if (!POINTER_TYPE_P (TREE_TYPE (ptr)) || !TREE_VISITED (ptr))
continue;
/* RESULT_DECL is special. If it's a GIMPLE register, then it
is only written-to only once in the return statement.
Otherwise, aggregate RESULT_DECLs may be written-to more than
once in virtual operands. */
- if (TREE_CODE (SSA_NAME_VAR (ptr)) == RESULT_DECL
+ var = SSA_NAME_VAR (ptr);
+ if (TREE_CODE (var) == RESULT_DECL
&& is_gimple_reg (ptr))
continue;
+ pi = SSA_NAME_PTR_INFO (ptr);
if (pi == NULL)
continue;
+ ann = var_ann (var);
if (pi->is_dereferenced && !pi->name_mem_tag && !ann->type_mem_tag)
{
error ("Dereferenced pointers should have a name or a type tag");
/* Keep track of SSA names present in the IL. */
for (i = 1; i < num_ssa_names; i++)
- if (ssa_name (i))
- TREE_VISITED (ssa_name (i)) = 0;
-
- calculate_dominance_info (CDI_DOMINATORS);
-
- /* Verify and register all the SSA_NAME definitions found in the
- function. */
- FOR_EACH_BB (bb)
{
- tree phi;
- block_stmt_iterator bsi;
-
- for (phi = phi_nodes (bb); phi; phi = PHI_CHAIN (phi))
- {
- int i;
- if (verify_def (bb, definition_block, PHI_RESULT (phi), phi,
- !is_gimple_reg (PHI_RESULT (phi))))
- goto err;
- for (i = 0; i < PHI_NUM_ARGS (phi); i++)
- {
- tree def = PHI_ARG_DEF (phi, i);
- if (TREE_CODE (def) != SSA_NAME && !is_gimple_min_invariant (def))
- {
- error ("PHI argument is not SSA_NAME, or invariant");
- print_generic_stmt (stderr, phi, TDF_VOPS);
- goto err;
- }
- }
- }
-
- for (bsi = bsi_start (bb); !bsi_end_p (bsi); bsi_next (&bsi))
+ tree name = ssa_name (i);
+ if (name)
{
tree stmt;
+ TREE_VISITED (name) = 0;
- stmt = bsi_stmt (bsi);
- get_stmt_operands (stmt);
-
- if (stmt_ann (stmt)->makes_aliased_stores
- && NUM_V_MAY_DEFS (STMT_V_MAY_DEF_OPS (stmt)) == 0)
- {
- error ("Statement makes aliased stores, but has no V_MAY_DEFS");
- print_generic_stmt (stderr, stmt, TDF_VOPS);
- goto err;
- }
-
- FOR_EACH_SSA_TREE_OPERAND (op, stmt, iter, SSA_OP_VIRTUAL_DEFS)
- {
- if (verify_def (bb, definition_block, op, stmt, true))
- goto err;
- }
-
- FOR_EACH_SSA_TREE_OPERAND (op, stmt, iter, SSA_OP_DEF)
+ stmt = SSA_NAME_DEF_STMT (name);
+ if (!IS_EMPTY_STMT (stmt))
{
- if (verify_def (bb, definition_block, op, stmt, false))
- goto err;
+ basic_block bb = bb_for_stmt (stmt);
+ verify_def (bb, definition_block,
+ name, stmt, !is_gimple_reg (name));
+
}
}
}
+ calculate_dominance_info (CDI_DOMINATORS);
/* Now verify all the uses and make sure they agree with the definitions
found in the previous pass. */
{
tree stmt = bsi_stmt (bsi);
- FOR_EACH_SSA_TREE_OPERAND (op, stmt, iter, SSA_OP_VIRTUAL_USES | SSA_OP_VIRTUAL_KILLS)
- {
- if (verify_use (bb, definition_block[SSA_NAME_VERSION (op)],
- op, stmt, false, true,
- names_defined_in_bb))
- goto err;
- }
+ get_stmt_operands (stmt);
+
+ if (stmt_ann (stmt)->makes_aliased_stores
+ && NUM_V_MAY_DEFS (STMT_V_MAY_DEF_OPS (stmt)) == 0)
+ {
+ error ("Statement makes aliased stores, but has no V_MAY_DEFS");
+ print_generic_stmt (stderr, stmt, TDF_VOPS);
+ goto err;
+ }
- FOR_EACH_SSA_TREE_OPERAND (op, stmt, iter, SSA_OP_USE)
+ FOR_EACH_SSA_TREE_OPERAND (op, stmt, iter, SSA_OP_ALL_USES | SSA_OP_ALL_KILLS)
{
if (verify_use (bb, definition_block[SSA_NAME_VERSION (op)],
- op, stmt, false, false,
+ op, stmt, false, !is_gimple_reg (op),
names_defined_in_bb))
goto err;
}
}
}
- /* Verify the uses in arguments of PHI nodes at the exits from the
- block. */
- FOR_EACH_EDGE (e, ei, bb->succs)
- {
- for (phi = phi_nodes (e->dest); phi; phi = PHI_CHAIN (phi))
- {
- bool virtual = !is_gimple_reg (PHI_RESULT (phi));
- op = PHI_ARG_DEF_FROM_EDGE (phi, e);
- if (TREE_CODE (op) != SSA_NAME)
- continue;
-
- if (verify_use (bb, definition_block[SSA_NAME_VERSION (op)],
- op, phi, false, virtual,
- names_defined_in_bb))
- goto err;
- }
- }
-
bitmap_clear (names_defined_in_bb);
}
}
if (val
- && !operand_equal_p (val, def, 0))
+ && !operand_equal_for_phi_arg_p (val, def))
return;
val = def;
NULL, /* sub */
NULL, /* next */
0, /* static_pass_number */
- 0, /* tv_id */
+ TV_TREE_REDPHI, /* tv_id */
PROP_cfg | PROP_ssa | PROP_alias, /* properties_required */
0, /* properties_provided */
0, /* properties_destroyed */
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