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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 13:14:23 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 13:14:23 +0000 |
commit | 73df946d56c74384511a194dd01dbe099584fd1a (patch) | |
tree | fd0bcea490dd81327ddfbb31e215439672c9a068 /test/codegen/logic.go | |
parent | Initial commit. (diff) | |
download | golang-1.16-73df946d56c74384511a194dd01dbe099584fd1a.tar.xz golang-1.16-73df946d56c74384511a194dd01dbe099584fd1a.zip |
Adding upstream version 1.16.10.upstream/1.16.10upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'test/codegen/logic.go')
-rw-r--r-- | test/codegen/logic.go | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/test/codegen/logic.go b/test/codegen/logic.go new file mode 100644 index 0000000..9afdfd7 --- /dev/null +++ b/test/codegen/logic.go @@ -0,0 +1,24 @@ +// 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 + +var gx, gy int + +// 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 { + // Load x,y into registers, so those MOVQ will not appear at the z := x&y line. + gx, gy = x, y + // amd64:-"MOVQ" + z := x & y + if z == 0 { + return 77 + } + // use z by returning it + return z +} |