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67fdb0de86
Bake the bit width and signedness into opcodes. Pro: Rewrite rules become easier. Less chance for confusion. Con: Lots more opcodes. Let me know what you think. I'm leaning towards this, but I could be convinced otherwise if people think this is too ugly. Update #11467 Change-Id: Icf1b894268cdf73515877bb123839800d97b9df9 Reviewed-on: https://go-review.googlesource.com/12362 Reviewed-by: Alan Donovan <adonovan@google.com> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
58 lines
1.4 KiB
Go
58 lines
1.4 KiB
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 TestSchedule(t *testing.T) {
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c := NewConfig("amd64", DummyFrontend{t})
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cases := []fun{
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Fun(c, "entry",
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Bloc("entry",
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Valu("mem0", OpArg, TypeMem, 0, ".mem"),
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Valu("ptr", OpConst, TypeInt64, 0xABCD, nil),
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Valu("v", OpConst, TypeInt64, 12, nil),
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Valu("mem1", OpStore, TypeMem, 0, nil, "ptr", "v", "mem0"),
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Valu("mem2", OpStore, TypeMem, 0, nil, "ptr", "v", "mem1"),
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Valu("mem3", OpStore, TypeInt64, 0, nil, "ptr", "sum", "mem2"),
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Valu("l1", OpLoad, TypeInt64, 0, nil, "ptr", "mem1"),
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Valu("l2", OpLoad, TypeInt64, 0, nil, "ptr", "mem2"),
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Valu("sum", OpAdd64, TypeInt64, 0, nil, "l1", "l2"),
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Goto("exit")),
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Bloc("exit",
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Exit("mem3"))),
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}
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for _, c := range cases {
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schedule(c.f)
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if !isSingleLiveMem(c.f) {
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t.Error("single-live-mem restriction not enforced by schedule for func:")
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printFunc(c.f)
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}
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}
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}
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func isSingleLiveMem(f *Func) bool {
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for _, b := range f.Blocks {
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var liveMem *Value
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for _, v := range b.Values {
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for _, w := range v.Args {
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if w.Type.IsMemory() {
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if liveMem == nil {
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liveMem = w
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continue
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}
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if w != liveMem {
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return false
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}
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}
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}
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if v.Type.IsMemory() {
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liveMem = v
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}
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}
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}
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return true
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}
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