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[Bug rtl-optimization/71976] insn-combiner deletes a live 64-bit shift
- 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: Mon, 08 Aug 2016 10:06:46 +0000
- Subject: [Bug rtl-optimization/71976] insn-combiner deletes a live 64-bit shift
- Auto-submitted: auto-generated
- References: <bug-71976-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71976
--- Comment #9 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
Author: gjl
Date: Mon Aug 8 10:06:15 2016
New Revision: 239238
URL: https://gcc.gnu.org/viewcvs?rev=239238&root=gcc&view=rev
Log:
Backport from 2016-07-29 trunk r238863.
PR rtl-optimization/71976
* combine.c (get_last_value): Return 0 if the argument for which
the function is called has a wider mode than the recorded value.
Modified:
branches/gcc-6-branch/gcc/ChangeLog
branches/gcc-6-branch/gcc/combine.c