tree 1c392f6a91f7925bdbf1d1233642457a3e3bd3c0
parent 0067d814b6a45b16af6f9c36b8898bcbf38d0e99
author qmuntal <quimmuntal@gmail.com> 1675181048 +0100
committer Gopher Robot <gobot@golang.org> 1675186725 +0000

cmd/internal/obj/x86: use mov instead of lea to load the frame pointer

This CL instructs the Go x86 compiler to load the frame pointer address
using a MOV instead of a LEA instruction, being MOV 1 byte shorter:

Before
  55            PUSHQ   BP
  48 8d 2c 24   LEAQ    0(SP), BP

After
  55            PUSHQ   BP
  48 89 e5      MOVQ    SP, BP

This reduces the size of the Go toolchain ~0.06%.

Updates #6853

Change-Id: I5557cf34c47e871d264ba0deda9b78338681a12c
Reviewed-on: https://go-review.googlesource.com/c/go/+/463845
Auto-Submit: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Quim Muntal <quimmuntal@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>