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re PR middle-end/47370 (error: invalid first operand of MEM_REF) 

2011-01-20  Richard Guenther  <rguenther@suse.de>

	PR middle-end/47370
	* tree-inline.c (remap_gimple_op_r): Recurse manually for
	the pointer operand of MEM_REFs.

	* gcc.dg/torture/pr47370.c: New testcase.

From-SVN: r169055
This commit is contained in:
Richard Guenther 2011-01-20 14:42:20 +00:00 committed by Richard Biener
parent 28fc44f389
commit 93e452edc6
4 changed files with 75 additions and 47 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2011-01-20 Richard Guenther <rguenther@suse.de>
PR middle-end/47370
* tree-inline.c (remap_gimple_op_r): Recurse manually for
the pointer operand of MEM_REFs.
2011-01-20 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/46130

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2011-01-20 Richard Guenther <rguenther@suse.de>
PR middle-end/47370
* gcc.dg/torture/pr47370.c: New testcase.
2011-01-20 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/46130

27
gcc/testsuite/gcc.dg/torture/pr47370.c Normal file
View File

@ -0,0 +1,27 @@
/* { dg-do compile } */
struct S { int s; };
void
foo (void)
{
for (;;)
;
}
struct S
bar (void)
{
struct S s = { 99 };
return s;
}
void
baz (int i)
{
struct S s[1];
s[0] = bar ();
bar ();
foo ();
}

22
gcc/tree-inline.c
View File

@ -811,23 +811,14 @@ remap_gimple_op_r (tree *tp, int *walk_subtrees, void *data)
knows not to copy VAR_DECLs, etc., so this is safe. */
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;
/* See remap_ssa_name. */
if (TREE_CODE (decl) == SSA_NAME
&& TREE_CODE (SSA_NAME_VAR (decl)) == RESULT_DECL
&& id->transform_return_to_modify)
decl = SSA_NAME_VAR (decl);
n = (tree *) pointer_map_contains (id->decl_map, decl);
if (n)
{
tree ptr = TREE_OPERAND (*tp, 0);
tree old = *tp;
tree ptr = unshare_expr (*n);
tree tem;
/* 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);
if ((tem = maybe_fold_offset_to_reference (EXPR_LOCATION (*tp),
ptr,
TREE_OPERAND (*tp, 1),
@ -862,7 +853,6 @@ remap_gimple_op_r (tree *tp, int *walk_subtrees, void *data)
*walk_subtrees = 0;
return NULL;
}
}
/* Here is the "usual case". Copy this tree node, and then
tweak some special cases. */