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[Bug rtl-optimization/69447] [5/6 Regression] wrong code with -O2 -fno-schedule-insns and mixed 8/16/32/64bit arithmetics @ armv7a
- From: "jakub at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 27 Jan 2016 10:00:18 +0000
- Subject: [Bug rtl-optimization/69447] [5/6 Regression] wrong code with -O2 -fno-schedule-insns and mixed 8/16/32/64bit arithmetics @ armv7a
- Auto-submitted: auto-generated
- References: <bug-69447-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69447
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Without knowing the lra-remat code at all, I just wonder if subreg_regs needs
to be one per the whole function, rather than say per extended basic block or
basic block, with the patch any uses in multi-reg subregs anywhere in the
function will affect remat of all other spots where it is used.