[Bug tree-optimization/77309] [5/6/7 Regression] wrong code at -Os and above on x86_64-linux-gnu (in the 64-bit mode)
bernds at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Mon Nov 7 16:59:00 GMT 2016
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77309
--- Comment #3 from Bernd Schmidt <bernds at gcc dot gnu.org> ---
Author: bernds
Date: Mon Nov 7 16:59:11 2016
New Revision: 241912
URL: https://gcc.gnu.org/viewcvs?rev=241912&root=gcc&view=rev
Log:
PR rtl-optimization/77309
* combine.c (make_compound_operation): Allow EQ for IN_CODE, and
don't assume an equality comparison for plain COMPARE.
(simplify_comparison): Pass a more accurate code to
make_compound_operation.
testsuite/
PR rtl-optimization/77309
* gcc.dg/torture/pr77309.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr77309.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/combine.c
trunk/gcc/testsuite/ChangeLog
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