https://gcc.gnu.org/g:fbf3ff6bc169639a2d55ab4ed5f962201ad6416e
commit fbf3ff6bc169639a2d55ab4ed5f962201ad6416e
Author: Michael Matz <m...@suse.de>
Date: Thu Jul 11 15:21:05 2024 +0200
x86-ssw: Deal with deallocated frame in epilogue
When the frame is deallocated separately we need to adjust
frame_state.sp_offset to be correct before emitting the rest
of the standard epilogue.
Diff:
---
gcc/config/i386/i386.cc | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/gcc/config/i386/i386.cc b/gcc/config/i386/i386.cc
index 8c9505d53a75..847c6116884b 100644
--- a/gcc/config/i386/i386.cc
+++ b/gcc/config/i386/i386.cc
@@ -9931,6 +9931,11 @@ ix86_expand_epilogue (int style)
else
restore_regs_via_mov = false;
+ /* If we've (de)allocated the frame separately, then that's done already,
+ and SP is in fact at a word offset. */
+ if (m->frame_alloc_separately)
+ m->fs.sp_offset = UNITS_PER_WORD;
+
if (restore_regs_via_mov || frame.nsseregs)
{
/* Ensure that the entire register save area is addressable via
