From: Joel Sing <joel@sing.id.au>
Date: Tue, 4 May 2021 18:01:52 +0000 (+1000)
Subject: runtime: remove redundant save_g call in mcall for arm
X-Git-Tag: go1.17beta1~242
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=4c9791299d;p=gostls13.git

runtime: remove redundant save_g call in mcall for arm

The setg call a few lines earlier has already performed the same iscgo check
and called save_g if necessary.

Change-Id: I6e7c44cef4e0397d6001a3d5b7e334cdfbc3ce22
Reviewed-on: https://go-review.googlesource.com/c/go/+/316929
Trust: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
---

diff --git a/src/runtime/asm_arm.s b/src/runtime/asm_arm.s
index f468b77ee3..e779fc8f84 100644
--- a/src/runtime/asm_arm.s
+++ b/src/runtime/asm_arm.s
@@ -252,9 +252,6 @@ TEXT runtime·mcall(SB),NOSPLIT|NOFRAME,$0-4
 	CMP	g, R1
 	B.NE	2(PC)
 	B	runtime·badmcall(SB)
-	MOVB	runtime·iscgo(SB), R11
-	CMP	$0, R11
-	BL.NE	runtime·save_g(SB)
 	MOVW	fn+0(FP), R0
 	MOVW	(g_sched+gobuf_sp)(g), R13
 	SUB	$8, R13