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[Bug target/66697] Feature request: -mstackrealign and force_align_arg_pointer for x86_64
- From: "bucaneer at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 07 Oct 2015 12:13:27 +0000
- Subject: [Bug target/66697] Feature request: -mstackrealign and force_align_arg_pointer for x86_64
- Auto-submitted: auto-generated
- References: <bug-66697-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66697
--- Comment #21 from Justas L <bucaneer at gmail dot com> ---
(In reply to H.J. Lu from comment #20)
> -mstackrealign works correctly as designed on x86-64. The
> issue is MIN_STACK_BOUNDARY. When MIN_STACK_BOUNDARY is 128,
> you don't need to realign the stack if you only need 128-bit
> stack alignment.
When is MIN_STACK_BOUNDARY equal to 128? I thought it defaulted to 64 (8*8) for
x86_64 and 32 (4*8) for x86, no?