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re PR tree-optimization/33017 (tree check fail for legal code)

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PR tree-optimization/33017
	* tree-data-ref.c (split_constant_offset) <case SSA_NAME>: Don't
	recurse for pure or const function calls.

	* gcc.dg/pr33017.c: New test.

From-SVN: r128107
This commit is contained in:
Jakub Jelinek 2007-09-05 01:29:58 +02:00 committed by Jakub Jelinek
parent ce629d4d98
commit d3079c44fc
4 changed files with 41 additions and 1 deletions
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4
gcc/ChangeLog
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@ -3,6 +3,10 @@
* config/rs6000/tramp.asm: Include config.h.
Check __PIC__ or __pic__ macro instead of SHARED.
PR tree-optimization/33017
* tree-data-ref.c (split_constant_offset) <case SSA_NAME>: Don't
recurse for pure or const function calls.
2007-09-04 Laurynas Biveinis <laurynas.biveinis@gmail.com>
* c-format.c: Include alloc-pool.h.

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2007-09-05 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/33017
* gcc.dg/pr33017.c: New test.
2007-09-05 Ben Elliston <bje@au.ibm.com>
* gcc.target/powerpc/ppu-intrinsics.c: Add test cases for the

30
gcc/testsuite/gcc.dg/pr33017.c Normal file
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@ -0,0 +1,30 @@
/* PR tree-optimization/33017 */
/* { dg-do run } */
/* { dg-options "-O2 -ftree-vectorize" } */
extern __SIZE_TYPE__ strlen (const char *);
extern void abort (void);
char *
__attribute__((noinline))
foo (const char *string)
{
int len;
static char var[0x104];
int off;
len = strlen (string);
for (off = 0; off < 64; off++)
var[len + off + 2] = 0x57;
return var;
}
int
main (void)
{
char *p = foo ("abcd");
int i;
for (i = 0; i < 0x104; i++)
if (p[i] != ((i >= 6 && i < 70) ? 0x57 : 0))
abort ();
return 0;
}

3
gcc/tree-data-ref.c
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@ -574,7 +574,8 @@ split_constant_offset (tree exp, tree *var, tree *off)
if (!TREE_SIDE_EFFECTS (def_stmt_rhs)
&& EXPR_P (def_stmt_rhs)
&& !REFERENCE_CLASS_P (def_stmt_rhs))
&& !REFERENCE_CLASS_P (def_stmt_rhs)
&& !get_call_expr_in (def_stmt_rhs))
{
split_constant_offset (def_stmt_rhs, &var0, &off0);
var0 = fold_convert (type, var0);