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[Bug other/67630] ymm and zmm register aren't preserved in interrupt handler
- From: "hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 18 Sep 2015 17:29:42 +0000
- Subject: [Bug other/67630] ymm and zmm register aren't preserved in interrupt handler
- Auto-submitted: auto-generated
- References: <bug-67630-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67630
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-09-18
Ever confirmed|0 |1
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
ix86_compute_frame_layout has
/* Align and set SSE register save area. */
if (frame->nsseregs)
{
/* The only ABI that has saved SSE registers (Win64) also has a
16-byte aligned default stack, and thus we don't need to be
within the re-aligned local stack frame to save them. */
gcc_assert (INCOMING_STACK_BOUNDARY >= 128);
offset = (offset + 16 - 1) & -16;
offset += frame->nsseregs * 16;
}
It isn't true for interrupt handler.