EH returns no longer rely on clobbering the return address on the stack
so forcing a stack frame is not necessary.
This does not actually change the code gen for the unwinder since there
are calls before the EH return.
gcc/ChangeLog:
* config/aarch64/aarch64.cc (aarch64_needs_frame_chain): Do not
force frame chain for eh_return.
---
unchanged compared to v1
already approved at:
https://gcc.gnu.org/pipermail/gcc-patches/2023-September/629346.html
---
gcc/config/aarch64/aarch64.cc | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
index 5cdb33dd3dc..88594bed8ce 100644
--- a/gcc/config/aarch64/aarch64.cc
+++ b/gcc/config/aarch64/aarch64.cc
@@ -8492,8 +8492,7 @@ aarch64_output_probe_sve_stack_clash (rtx base, rtx
adjustment,
static bool
aarch64_needs_frame_chain (void)
{
- /* Force a frame chain for EH returns so the return address is at FP+8. */
- if (frame_pointer_needed || crtl->calls_eh_return)
+ if (frame_pointer_needed)
return true;
/* A leaf function cannot have calls or write LR. */
--
2.25.1
