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[Bug rtl-optimization/80754] invalid smull instructions generated after r247881
- 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: Mon, 15 May 2017 14:00:19 +0000
- Subject: [Bug rtl-optimization/80754] invalid smull instructions generated after r247881
- Auto-submitted: auto-generated
- References: <bug-80754-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80754
Richard Earnshaw <rearnsha at gcc dot gnu.org> changed:
What |Removed |Added
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CC| |rearnsha at gcc dot gnu.org
Component|target |rtl-optimization
--- Comment #1 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
I suspect this has just revealed a latent issue.
How can it be right for the register allocator to assign the same register to
*two* different output operands?