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573c791e81
Failure to treat control ops as live can lead to them being eliminated when they live in other blocks. Change-Id: I604a1977a3d3884b1f4516bea4e15885ce38272d Reviewed-on: https://go-review.googlesource.com/13138 Reviewed-by: Keith Randall <khr@golang.org>
32 lines
728 B
Go
32 lines
728 B
Go
// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package ssa
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import "testing"
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func TestLiveControlOps(t *testing.T) {
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c := testConfig(t)
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f := Fun(c, "entry",
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Bloc("entry",
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Valu("mem", OpArg, TypeMem, 0, ".mem"),
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Valu("x", OpAMD64MOVBconst, TypeInt8, 0, 1),
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Valu("y", OpAMD64MOVBconst, TypeInt8, 0, 2),
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Valu("a", OpAMD64TESTB, TypeBool, 0, nil, "x", "y"),
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Valu("b", OpAMD64TESTB, TypeBool, 0, nil, "y", "x"),
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If("a", "if", "exit"),
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),
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Bloc("if",
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If("b", "plain", "exit"),
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),
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Bloc("plain",
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Goto("exit"),
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),
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Bloc("exit",
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Exit("mem"),
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),
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)
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regalloc(f.f)
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checkFunc(f.f)
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}
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