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[Bug rtl-optimization/47925] delete_trivially_dead_insns mishandles volatile mems
- From: "rsandifo at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 2 Mar 2011 13:25:20 +0000
- Subject: [Bug rtl-optimization/47925] delete_trivially_dead_insns mishandles volatile mems
- Auto-submitted: auto-generated
- References: <bug-47925-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47925
--- Comment #1 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2011-03-02 13:25:13 UTC ---
Author: rsandifo
Date: Wed Mar 2 13:25:10 2011
New Revision: 170613
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=170613
Log:
gcc/
PR rtl-optimization/47925
* cse.c (count_reg_usage): Don't ignore the SET_DEST of instructions
with side effects. Remove the more-specific check for volatile asms.
gcc/testsuite/
PR rtl-optimization/47925
* gcc.c-torture/execute/pr47925.c: New test.
Added:
trunk/gcc/testsuite/gcc.c-torture/execute/pr47925.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cse.c
trunk/gcc/testsuite/ChangeLog