[Bug rtl-optimization/52060] [4.6/4.7 Regression] Invalid constant simplification in combine with parallel result
jakub at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Tue Feb 7 15:52:00 GMT 2012
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52060
--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-02-07 15:48:59 UTC ---
Author: jakub
Date: Tue Feb 7 15:48:52 2012
New Revision: 183972
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=183972
Log:
PR rtl-optimization/52060
* combine.c (try_combine): Add i0src_copy and i0src_copy2 variables,
copy i1src to i1src_copy whenever added_sets_2 && i1_feeds_i2_n already
before i1dest -> i1src substitution in newpat, copy i0src to i0src_copy
and/or i0src_copy2 when needed.
* gcc.dg/torture/pr52060.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr52060.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/combine.c
trunk/gcc/testsuite/ChangeLog
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