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[Bug rtl-optimization/54300] [4.7, 4.8, 4.9 Regression] regcprop incorrectly looks through parallel register swap operation
- From: "rearnsha at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 20 Nov 2013 13:55:06 +0000
- Subject: [Bug rtl-optimization/54300] [4.7, 4.8, 4.9 Regression] regcprop incorrectly looks through parallel register swap operation
- Auto-submitted: auto-generated
- References: <bug-54300-4 at http dot gcc dot gnu dot org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54300
--- Comment #13 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
Author: rearnsha
Date: Wed Nov 20 13:55:04 2013
New Revision: 205117
URL: http://gcc.gnu.org/viewcvs?rev=205117&root=gcc&view=rev
Log:
PR rtl-optimization/54300
gcc/
PR rtl-optimization/54300
* regcprop.c (copyprop_hardreg_forward_1): Ensure any unused
outputs in a single-set are killed from the value chains.
gcc/testsuite:
PR rtl-optimization/54300
* gcc.target/arm/pr54300.C: New test.
Added:
trunk/gcc/testsuite/gcc.target/arm/pr54300.C
Modified:
trunk/gcc/ChangeLog
trunk/gcc/regcprop.c
trunk/gcc/testsuite/ChangeLog