[Bug rtl-optimization/54300] [4.7, 4.8 Regression] regcprop incorrectly looks through parallel register swap operation
rearnsha at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Fri Jan 10 16:55:00 GMT 2014
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54300
--- Comment #17 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
Author: rearnsha
Date: Fri Jan 10 16:54:43 2014
New Revision: 206533
URL: http://gcc.gnu.org/viewcvs?rev=206533&root=gcc&view=rev
Log:
PR rtl-optimization/54300
gcc:
* regcprop.c (copyprop_hardreg_forward_1): Ensure any unused
outputs in a single-set are killed from the value chains.
gcc/testsuite:
* gcc.target/arm/pr54300.C: New test.
Added:
branches/gcc-4_7-branch/gcc/testsuite/gcc.target/arm/pr54300.C
Modified:
branches/gcc-4_7-branch/gcc/ChangeLog
branches/gcc-4_7-branch/gcc/regcprop.c
branches/gcc-4_7-branch/gcc/testsuite/ChangeLog
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