cmd/internal/gc: refine ginscmp comment
Change-Id: I2ebb36c6c5de9d34e52ed523e9c888452591924a
Reviewed-on: https://go-review.googlesource.com/10152
Reviewed-by: Minux Ma <minux@golang.org>
diff --git a/src/cmd/internal/gc/go.go b/src/cmd/internal/gc/go.go
index 31692bd..5fa85e2 100644
--- a/src/cmd/internal/gc/go.go
+++ b/src/cmd/internal/gc/go.go
@@ -786,8 +786,9 @@
//
// Ginscmp must be able to handle all kinds of arguments for n1 and n2,
// not just simple registers, although it can assume that there are no
- // function calls needed during the evaluation, so no in-memory temporaries
- // are necessary.
+ // function calls needed during the evaluation, and on 32-bit systems
+ // the values are guaranteed not to be 64-bit values, so no in-memory
+ // temporaries are necessary.
Ginscmp func(op int, t *Type, n1, n2 *Node, likely int) *obj.Prog
// Ginsboolval inserts instructions to convert the result
