mirror of https://github.com/golang/go.git
35 lines
1.7 KiB
Go
35 lines
1.7 KiB
Go
// Copyright 2018 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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type extTest struct {
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f func(uint64, uint64) uint64
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arg1 uint64
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arg2 uint64
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res uint64
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name string
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}
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var extTests = [...]extTest{
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{f: func(a, b uint64) uint64 { op1 := int32(a); op2 := int32(b); return uint64(uint32(op1 / op2)) }, arg1: 0x1, arg2: 0xfffffffeffffffff, res: 0xffffffff, name: "div"},
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{f: func(a, b uint64) uint64 { op1 := int32(a); op2 := int32(b); return uint64(uint32(op1 * op2)) }, arg1: 0x1, arg2: 0x100000001, res: 0x1, name: "mul"},
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{f: func(a, b uint64) uint64 { op1 := int32(a); op2 := int32(b); return uint64(uint32(op1 + op2)) }, arg1: 0x1, arg2: 0xeeeeeeeeffffffff, res: 0x0, name: "add"},
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{f: func(a, b uint64) uint64 { op1 := int32(a); op2 := int32(b); return uint64(uint32(op1 - op2)) }, arg1: 0x1, arg2: 0xeeeeeeeeffffffff, res: 0x2, name: "sub"},
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{f: func(a, b uint64) uint64 { op1 := int32(a); op2 := int32(b); return uint64(uint32(op1 | op2)) }, arg1: 0x100000000000001, arg2: 0xfffffffffffffff, res: 0xffffffff, name: "or"},
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{f: func(a, b uint64) uint64 { op1 := int32(a); op2 := int32(b); return uint64(uint32(op1 ^ op2)) }, arg1: 0x100000000000001, arg2: 0xfffffffffffffff, res: 0xfffffffe, name: "xor"},
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{f: func(a, b uint64) uint64 { op1 := int32(a); op2 := int32(b); return uint64(uint32(op1 & op2)) }, arg1: 0x100000000000001, arg2: 0x100000000000001, res: 0x1, name: "and"},
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}
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func TestZeroExtension(t *testing.T) {
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for _, x := range extTests {
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r := x.f(x.arg1, x.arg2)
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if x.res != r {
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t.Errorf("%s: got %d want %d", x.name, r, x.res)
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}
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}
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}
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