[gcc(refs/vendors/ARM/heads/gcs-13)] aarch64: Do not force a stack frame for EH returns

[gcc(refs/vendors/ARM/heads/gcs-13)] aarch64: Do not force a stack frame for EH returns

[Szabolcs Nagy]

https://gcc.gnu.org/g:f6d55bdfef950282f2fc2a15dbda3dbfd324e876

commit f6d55bdfef950282f2fc2a15dbda3dbfd324e876
Author: Szabolcs Nagy <szabolcs.nagy@arm.com>
Date:   Tue May 9 11:07:05 2023 +0100

    aarch64: Do not force a stack frame for EH returns
    
    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.
    
    (cherry picked from commit aa2ad77a9b3994fb679e5295d9570f6f8696540d)

Diff:
---
 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 0367d5dc2ef0..06aef1bb725c 100644
--- a/gcc/config/aarch64/aarch64.cc
+++ b/gcc/config/aarch64/aarch64.cc
@@ -8379,8 +8379,7 @@ 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.  */