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re PR debug/46375 (-fcompare-debug failure (length) with -O -fgcse -fno-tree-dominator-opts)

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PR debug/46375
	* emit-rtl.c (remove_insn): Do not mark BBs upon debug insns.

From-SVN: r166646
This commit is contained in:
Eric Botcazou 2010-11-12 09:57:20 +00:00 committed by Eric Botcazou
parent 8bbaa77087
commit 4e0084e438
4 changed files with 26 additions and 1 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2010-11-12 Eric Botcazou <ebotcazou@adacore.com>
PR debug/46375
* emit-rtl.c (remove_insn): Do not mark BBs upon debug insns.
2010-11-11 Rodrigo Rivas Costa <rodrigorivascosta@gmail.com>
PR lto/46376

2
gcc/emit-rtl.c
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@ -3867,7 +3867,7 @@ remove_insn (rtx insn)
if (!BARRIER_P (insn)
&& (bb = BLOCK_FOR_INSN (insn)))
{
if (INSN_P (insn))
if (NONDEBUG_INSN_P (insn))
df_set_bb_dirty (bb);
if (BB_HEAD (bb) == insn)
{

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2010-11-12 Eric Botcazou <ebotcazou@adacore.com>
* gcc.dg/pr46375.c: New test.
2010-11-11 Nathan Froyd <froydnj@codesourcery.com>
PR c/44782

16
gcc/testsuite/gcc.dg/pr46375.c Normal file
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@ -0,0 +1,16 @@
/* PR debug/46375 */
/* Reported by Zdenek Sojka <zsojka@seznam.cz> */
/* { dg-do compile } */
/* { dg-options "-fgcse -fno-tree-dominator-opts -fcompare-debug -O" } */
void bar (void);
void
foo (int **pp)
{
int *p = 0;
if (pp)
p = *pp;
if (p && *p)
bar ();
}