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[Bug rtl-optimization/69904] [6 Regression] shrink-wrapping creates weird atomic compare exchange loop on arm
- From: "segher at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 23 Feb 2016 00:46:16 +0000
- Subject: [Bug rtl-optimization/69904] [6 Regression] shrink-wrapping creates weird atomic compare exchange loop on arm
- Auto-submitted: auto-generated
- References: <bug-69904-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69904
--- Comment #2 from Segher Boessenkool <segher at gcc dot gnu.org> ---
If you disallow this memory clobber from being copied (via the
cannot_copy_insn_p hook), do you then get what you want?