sync/atomic: fix LoadInt32 on ARM

R0 is clobbered after cas, while R1 preserves its value. R=golang-dev CC=golang-dev https://golang.org/cl/4782042

sync/atomic: fix LoadInt32 on ARM
R0 is clobbered after cas, while R1 preserves its value. R=golang-dev CC=golang-dev https://golang.org/cl/4782042
0b200b4d · Dmitriy Vyukov · Rob Pike · 3bbeef52 · 0b200b4d
Commit 0b200b4d authored Jul 19, 2011 by Dmitriy Vyukov Committed by Rob Pike Jul 19, 2011
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asm_linux_arm.s src/pkg/sync/atomic/asm_linux_arm.s +1 -1

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--- a/src/pkg/sync/atomic/asm_linux_arm.s
+++ b/src/pkg/sync/atomic/asm_linux_arm.s
@@ -94,5 +94,5 @@ loadloop1:
 	MOVW	R0, R1
 	BL	cas<>(SB)
 	BCC	loadloop1
-	MOVW	R0, val+4(FP)
+	MOVW	R1, val+4(FP)
 	RET