From: Szabolcs Nagy <szabolcs.nagy@arm.com>
Date: Tue, 9 May 2023 10:07:05 +0000 (+0100)
Subject: aarch64: Do not force a stack frame for EH returns
X-Git-Tag: basepoints/gcc-15~4252
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=aa2ad77a9b3994fb679e5295d9570f6f8696540d;p=thirdparty%2Fgcc.git

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.
---

diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
index 7ccadf91c260..b2093430937f 100644
--- a/gcc/config/aarch64/aarch64.cc
+++ b/gcc/config/aarch64/aarch64.cc
@@ -6137,8 +6137,7 @@ 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.  */