[gcc r12-9867] aarch64: Minor initial adjustment tweak

[gcc r12-9867] aarch64: Minor initial adjustment tweak

[Richard Sandiford]

https://gcc.gnu.org/g:08f71b4bb28fb74d20e8d2927a557e8119ce9f4d

commit r12-9867-g08f71b4bb28fb74d20e8d2927a557e8119ce9f4d
Author: Richard Sandiford <richard.sandiford@arm.com>
Date:   Tue Sep 12 16:08:54 2023 +0100

    aarch64: Minor initial adjustment tweak
    
    This patch just changes a calculation of initial_adjust
    to one that makes it slightly more obvious that the total
    adjustment is frame.frame_size.
    
    gcc/
            * config/aarch64/aarch64.cc (aarch64_layout_frame): Tweak
            calculation of initial_adjust for frames in which all saves
            are SVE saves.

Diff:
---
 gcc/config/aarch64/aarch64.cc | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
index 81935852d5b2..4d9fcf3d1623 100644
--- a/gcc/config/aarch64/aarch64.cc
+++ b/gcc/config/aarch64/aarch64.cc
@@ -8414,11 +8414,10 @@ aarch64_layout_frame (void)
     {
       /* Frame in which all saves are SVE saves:
 
-	 sub sp, sp, hard_fp_offset + below_hard_fp_saved_regs_size
+	 sub sp, sp, frame_size - bytes_below_saved_regs
 	 save SVE registers relative to SP
 	 sub sp, sp, bytes_below_saved_regs  */
-      frame.initial_adjust = (frame.bytes_above_hard_fp
-			      + frame.below_hard_fp_saved_regs_size);
+      frame.initial_adjust = frame.frame_size - frame.bytes_below_saved_regs;
       frame.final_adjust = frame.bytes_below_saved_regs;
     }
   else if (frame.bytes_above_hard_fp.is_constant (&const_above_fp)