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re PR rtl-optimization/56117 (ICE: in cselib_subst_to_values, at cselib.c:1853 with -O2 -fsched2-use-superblocks and __builtin_prefetch())

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PR rtl-optimization/56117
	* sched-deps.c (sched_analyze_2) <case PREFETCH>: For use_cselib
	call cselib_lookup_from_insn on the MEM before calling
	add_insn_mem_dependence.

	* gcc.dg/pr56117.c: New test.

From-SVN: r195513
This commit is contained in:
Jakub Jelinek 2013-01-28 17:50:22 +01:00 committed by Jakub Jelinek
parent 1691776171
commit db1fb332e1
4 changed files with 27 additions and 2 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2013-01-28 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/56117
* sched-deps.c (sched_analyze_2) <case PREFETCH>: For use_cselib
call cselib_lookup_from_insn on the MEM before calling
add_insn_mem_dependence.
2013-01-28 Richard Biener <rguenther@suse.de>
* tree-inline.c (remap_gimple_stmt): Do not assing a BLOCK

8
gcc/sched-deps.c
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@ -2720,8 +2720,12 @@ sched_analyze_2 (struct deps_desc *deps, rtx x, rtx insn)
prefetch has only the start address but it is better to have
something than nothing. */
if (!deps->readonly)
add_insn_mem_dependence (deps, true, insn,
gen_rtx_MEM (Pmode, XEXP (PATTERN (insn), 0)));
{
rtx x = gen_rtx_MEM (Pmode, XEXP (PATTERN (insn), 0));
if (sched_deps_info->use_cselib)
cselib_lookup_from_insn (x, Pmode, true, VOIDmode, insn);
add_insn_mem_dependence (deps, true, insn, x);
}
break;
case UNSPEC_VOLATILE:

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2013-01-28 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/56117
* gcc.dg/pr56117.c: New test.
2013-01-28 Richard Biener <rguenther@suse.de>
PR tree-optimization/56034

9
gcc/testsuite/gcc.dg/pr56117.c Normal file
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@ -0,0 +1,9 @@
/* PR rtl-optimization/56117 */
/* { dg-do compile } */
/* { dg-options "-O2 -fsched2-use-superblocks" } */
void
foo (void *p)
{
__builtin_prefetch (p);
}