cmd/compile: don't use R25 as input for LoweredMove on ARM64

The rule uses R25 as a scratch register. If the input is R25 it
will be clobbered on the way, causing wrong result.

Change-Id: I464eadbdef0f3a5e90f9ef8c818393baa4335b87
Reviewed-on: https://go-review.googlesource.com/c/go/+/430015
Run-TryBot: Cherry Mui <[email protected]>
Reviewed-by: Jenny Rakoczy <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>
Reviewed-by: Eric Fang <[email protected]>

Author: cherrymui

src/cmd/compile/internal/ssa/gen/ARM64Ops.go

@@ -593,7 +593,7 @@ func init() {
 			name:      "LoweredMove",
 			argLength: 4,
 			reg: regInfo{
-				inputs:   []regMask{buildReg("R17"), buildReg("R16"), gp},
+				inputs:   []regMask{buildReg("R17"), buildReg("R16"), gp &^ buildReg("R25")},
 				clobbers: buildReg("R16 R17 R25"),
 			},
 			clobberFlags:   true,