3 // Copyright 2018 The Go Authors. All rights reserved.
4 // Use of this source code is governed by a BSD-style
5 // license that can be found in the LICENSE file.
9 // Test to make sure that (CMPQ (ANDQ x y) [0]) does not get rewritten to
10 // (TESTQ x y) if the ANDQ has other uses. If that rewrite happens, then one
11 // of the args of the ANDQ needs to be saved so it can be used as the arg to TESTQ.
12 func andWithUse(x, y int) int {
14 // amd64:`TESTQ\s(AX, AX|BX, BX|CX, CX|DX, DX|SI, SI|DI, DI|R8, R8|R9, R9|R10, R10|R11, R11|R12, R12|R13, R13|R15, R15)`
18 // use z by returning it
22 // Verify (OR x (NOT y)) rewrites to (ORN x y) where supported
23 func ornot(x, y int) int {
29 // Verify that (OR (NOT x) (NOT y)) rewrites to (NOT (AND x y))
30 func orDemorgans(x, y int) int {
36 // Verify that (AND (NOT x) (NOT y)) rewrites to (NOT (OR x y))
37 func andDemorgans(x, y int) int {