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[13/19] aarch64: Minor initial adjustment tweak

Message ID	20230912152529.3322336-14-richard.sandiford@arm.com
State	Accepted
Headers	Received-SPF: pass (google.com: domain of gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org designates 8.43.85.97 as permitted sender) client-ip=8.43.85.97; DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 611A23851C01 To: gcc-patches@gcc.gnu.org Cc: Richard Sandiford <richard.sandiford@arm.com> Subject: [PATCH 13/19] aarch64: Minor initial adjustment tweak Date: Tue, 12 Sep 2023 16:25:23 +0100 Message-Id: <20230912152529.3322336-14-richard.sandiford@arm.com> In-Reply-To: <20230912152529.3322336-1-richard.sandiford@arm.com> References: <20230912152529.3322336-1-richard.sandiford@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: list From: Richard Sandiford via Gcc-patches <gcc-patches@gcc.gnu.org> Reply-To: Richard Sandiford <richard.sandiford@arm.com> Errors-To: gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org Sender: "Gcc-patches" <gcc-patches-bounces+ouuuleilei=gmail.com@gcc.gnu.org> X-getmail-retrieved-from-mailbox: INBOX
Series	aarch64: Fix -fstack-protector issue \| [00/19] aarch64: Fix -fstack-protector issue [01/19] aarch64: Use local frame vars in shrink-wrapping code [02/19] aarch64: Avoid a use of callee_offset [03/19] aarch64: Explicitly handle frames with no saved registers [04/19] aarch64: Add bytes_below_saved_regs to frame info [05/19] aarch64: Add bytes_below_hard_fp to frame info [06/19] aarch64: Tweak aarch64_save/restore_callee_saves [07/19] aarch64: Only calculate chain_offset if there is a chain [08/19] aarch64: Rename locals_offset to bytes_above_locals [09/19] aarch64: Rename hard_fp_offset to bytes_above_hard_fp [10/19] aarch64: Tweak frame_size comment [11/19] aarch64: Measure reg_offset from the bottom of the frame [12/19] aarch64: Simplify top of frame allocation [13/19] aarch64: Minor initial adjustment tweak [14/19] aarch64: Tweak stack clash boundary condition [15/19] aarch64: Put LR save probe in first 16 bytes [16/19] aarch64: Simplify probe of final frame allocation [17/19] aarch64: Explicitly record probe registers in frame info [18/19] aarch64: Remove below_hard_fp_saved_regs_size [19/19] aarch64: Make stack smash canary protect saved registers

Checks

Context	Check	Description
snail/gcc-patch-check	success	Github commit url

Commit Message

Richard Sandiford Sept. 12, 2023, 3:25 p.m. UTC

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

diff mbox series

Patch

diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
index 9578592d256..e40ccc7d1cf 100644
--- a/gcc/config/aarch64/aarch64.cc
+++ b/gcc/config/aarch64/aarch64.cc
@@ -8714,11 +8714,10 @@  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)