crosstool-ng/packages/gcc/10.5.0/0030-aarch64-Only-calculate-chain_offset-if-there-is-a-ch.patch

From 176001612860c2b04133c1de26eb673860800865 Mon Sep 17 00:00:00 2001
From: Richard Sandiford <richard.sandiford@arm.com>
Date: Tue, 27 Jun 2023 11:24:27 +0100
Subject: [PATCH 30/42] aarch64: Only calculate chain_offset if there is a
 chain

After previous patches, it is no longer necessary to calculate
a chain_offset in cases where there is no chain record.

gcc/
	* config/aarch64/aarch64.c (aarch64_expand_prologue): Move the
	calculation of chain_offset into the emit_frame_chain block.
---
 gcc/config/aarch64/aarch64.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index 884002e3b7b5..69cfa4b86a6e 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -8372,16 +8372,16 @@ aarch64_expand_prologue (void)
   if (callee_adjust != 0)
     aarch64_push_regs (reg1, reg2, callee_adjust);
 
-  /* The offset of the frame chain record (if any) from the current SP.  */
-  poly_int64 chain_offset = (initial_adjust + callee_adjust
-			     - frame.hard_fp_offset);
-  gcc_assert (known_ge (chain_offset, 0));
-
   /* The offset of the current SP from the bottom of the static frame.  */
   poly_int64 bytes_below_sp = frame_size - initial_adjust - callee_adjust;
 
   if (emit_frame_chain)
     {
+      /* The offset of the frame chain record (if any) from the current SP.  */
+      poly_int64 chain_offset = (initial_adjust + callee_adjust
+				 - frame.hard_fp_offset);
+      gcc_assert (known_ge (chain_offset, 0));
+
       if (callee_adjust == 0)
 	{
 	  reg1 = R29_REGNUM;
-- 
2.42.0