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[Bug rtl-optimization/67778] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in maybe_record_trace_start, at dwarf2cfi.c:2297
- 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: Wed, 02 Dec 2015 09:37:36 +0000
- Subject: [Bug rtl-optimization/67778] [6 Regression] ICE on valid code at -O3 on x86_64-linux-gnu in maybe_record_trace_start, at dwarf2cfi.c:2297
- Auto-submitted: auto-generated
- References: <bug-67778-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67778
--- Comment #12 from Segher Boessenkool <segher at gcc dot gnu.org> ---
Yes, I'm cross-compiling.
The only differences I see are:
* -fdwarf2-cfi-asm; this seemed promising but makes no difference.
* -mtune=generic -march=x86-64; but no dice.
* Very different ggc settings.
* Different GMP etc. versions.
The code coming in to shrink-wrap is different already.
Anyway, I have reproduced the problem (on gcc20), and I know what
the problem is. Will have to think a bit on how to properly solve
it.
And it seems I didn't read your #c5 very carefully, ugh. Sorry.