cmd/compile: remove carriage returns from AMD64latelower.rules

AMD64latelower.rules currently has Windows style line endings,
rather than Unix style line endings. Correct this.

Change-Id: Ie068dc6c64bd51cf2aa5bd192839fca4f28f40b8
Reviewed-on: https://go-review.googlesource.com/c/go/+/651818
Auto-Submit: Keith Randall <khr@golang.org>
Reviewed-by: Keith Randall <khr@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>

Author: 4a6f656c

src/cmd/compile/internal/ssa/_gen/AMD64latelower.rules

@@ -1,13 +1,13 @@
-// Copyright 2022 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Prefer SARX/SHLX/SHRX instruction because it has less register restriction on the shift input.
-(SAR(Q|L) x y) && buildcfg.GOAMD64 >= 3 => (SARX(Q|L) x y)
-(SHL(Q|L) x y) && buildcfg.GOAMD64 >= 3 => (SHLX(Q|L) x y)
-(SHR(Q|L) x y) && buildcfg.GOAMD64 >= 3 => (SHRX(Q|L) x y)
-
-// See comments in ARM64latelower.rules for why these are here.
-(MOVLQZX x) && zeroUpper32Bits(x,3) => x
-(MOVWQZX x) && zeroUpper48Bits(x,3) => x
-(MOVBQZX x) && zeroUpper56Bits(x,3) => x
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Prefer SARX/SHLX/SHRX instruction because it has less register restriction on the shift input.
+(SAR(Q|L) x y) && buildcfg.GOAMD64 >= 3 => (SARX(Q|L) x y)
+(SHL(Q|L) x y) && buildcfg.GOAMD64 >= 3 => (SHLX(Q|L) x y)
+(SHR(Q|L) x y) && buildcfg.GOAMD64 >= 3 => (SHRX(Q|L) x y)
+
+// See comments in ARM64latelower.rules for why these are here.
+(MOVLQZX x) && zeroUpper32Bits(x,3) => x
+(MOVWQZX x) && zeroUpper48Bits(x,3) => x
+(MOVBQZX x) && zeroUpper56Bits(x,3) => x