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master
test/codegen/logic.go
41 строка
1 KB
Keith Randall
test/codegen: get rid of \s
31 мар 2026, 21:01
31 мар 2026, 21:01
d6492e2
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// asmcheck // Copyright 2018 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. package codegen // Test to make sure that (CMPQ (ANDQ x y) [0]) does not get rewritten to // (TESTQ x y) if the ANDQ has other uses. If that rewrite happens, then one // of the args of the ANDQ needs to be saved so it can be used as the arg to TESTQ. func andWithUse(x, y int) int { z := x & y // amd64:`TESTQ (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)` if z == 0 { return 77 } // use z by returning it return z } // Verify (OR x (NOT y)) rewrites to (ORN x y) where supported func ornot(x, y int) int { // ppc64x:"ORN" z := x | ^y return z } // Verify that (OR (NOT x) (NOT y)) rewrites to (NOT (AND x y)) func orDemorgans(x, y int) int { // amd64:"AND" -"OR" z := ^x | ^y return z } // Verify that (AND (NOT x) (NOT y)) rewrites to (NOT (OR x y)) func andDemorgans(x, y int) int { // amd64:"OR" -"AND" z := ^x & ^y return z }