https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68986
Uroš Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
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CC| |hjl.tools at gmail dot com
--- Comment #6 from Uroš Bizjak <ubizjak at gmail dot com> ---
I was not able to reproduce the ICE with the first testcase from the Comment
#4, but was able to trigger the ICE with the second testcase with both gcc-5
and gcc-6.
We hit this corner case in i386.c:
/* Emit prologue code to adjust stack alignment and setup DRAP, in case
of DRAP is needed and stack realignment is really needed after reload */
if (stack_realign_drap)
{
int align_bytes = crtl->stack_alignment_needed / BITS_PER_UNIT;
/* Only need to push parameter pointer reg if it is caller saved. */
if (!call_used_regs[REGNO (crtl->drap_reg)])
{
/* Push arg pointer reg */
insn = emit_insn (gen_push (crtl->drap_reg));
RTX_FRAME_RELATED_P (insn) = 1;
}
...
Unfortunately, crtl->drap_reg is NULL at this point.
CC author.
