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[Bug rtl-optimization/51374] [avr] insn combine reorders volatile memory accesses
- From: "gjl at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 01 Feb 2012 12:40:26 +0000
- Subject: [Bug rtl-optimization/51374] [avr] insn combine reorders volatile memory accesses
- Auto-submitted: auto-generated
- References: <bug-51374-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51374
--- Comment #10 from Georg-Johann Lay <gjl at gcc dot gnu.org> 2012-02-01 12:40:26 UTC ---
Author: gjl
Date: Wed Feb 1 12:40:23 2012
New Revision: 183797
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=183797
Log:
gcc/
Backport from mainline r183796
PR rtl-optimization/51374
* combine.c (can_combine_p): Don't allow volatile_refs_p insns
to cross other volatile_refs_p insns.
gcc/testsuite/
Backport from mainline r183796
PR rtl-optimization/51374
* testsuite/gcc.target/avr/torture/pr51374-1.c: New.
Added:
branches/gcc-4_6-branch/gcc/testsuite/gcc.target/avr/torture/pr51374-1.c
Modified:
branches/gcc-4_6-branch/gcc/ChangeLog
branches/gcc-4_6-branch/gcc/combine.c
branches/gcc-4_6-branch/gcc/testsuite/ChangeLog