cmd/internal/obj/arm64: replace range checks with isaddcon2

isaddcon2 tests for the range 0 <= v <= 0xffffff - replace duplicated range
checks with calls to isaddcon2.

Change-Id: Ia6f331852ed3d77715b265cb4fcc500579eac711
Reviewed-on: https://go-review.googlesource.com/c/go/+/650935
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Fannie Zhang <Fannie.Zhang@arm.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>

diff --git a/src/cmd/internal/obj/arm64/asm7.go b/src/cmd/internal/obj/arm64/asm7.go
index f8d4c7aa98a4be93e99f83208d31f2b27b420976..680384da3f0a40ddf055dbd2361bb1e9669306ce 100644 (file)
--- a/src/cmd/internal/obj/arm64/asm7.go
+++ b/src/cmd/internal/obj/arm64/asm7.go
@@ -1953,7 +1953,7 @@ func (c *ctxt7) con32class(a *obj.Addr) int {
                return C_BITCON
        }
 
-       if 0 <= v && v <= 0xffffff {
+       if isaddcon2(int64(v)) {
                return C_ADDCON2
        }
        return C_LCON
@@ -2205,7 +2205,7 @@ func (c *ctxt7) aclass(a *obj.Addr) int {
                                return C_BITCON
                        }
 
-                       if 0 <= v && v <= 0xffffff {
+                       if isaddcon2(v) {
                                return C_ADDCON2
                        }