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b5c5efd5de
Redo how we keep track of forward references when building SSA. When the forward reference is resolved, update the Value node in place. Improve the phi elimination pass so it can simplify phis of phis. Give SSA package access to decoded line numbers. Fix line numbers for constant booleans. Change-Id: I3dc9896148d260be2f3dd14cbe5db639ec9fa6b7 Reviewed-on: https://go-review.googlesource.com/18674 Reviewed-by: David Chase <drchase@google.com> Run-TryBot: Keith Randall <khr@golang.org>
66 lines
2.3 KiB
Go
66 lines
2.3 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 (
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"cmd/internal/obj"
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"testing"
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)
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var CheckFunc = checkFunc
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var PrintFunc = printFunc
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var Opt = opt
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var Deadcode = deadcode
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func testConfig(t *testing.T) *Config {
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testCtxt := &obj.Link{}
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return NewConfig("amd64", DummyFrontend{t}, testCtxt)
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}
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// DummyFrontend is a test-only frontend.
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// It assumes 64 bit integers and pointers.
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type DummyFrontend struct {
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t testing.TB
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}
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func (DummyFrontend) StringData(s string) interface{} {
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return nil
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}
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func (DummyFrontend) Auto(t Type) GCNode {
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return nil
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}
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func (DummyFrontend) Line(line int32) string {
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return "unknown.go:0"
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}
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func (d DummyFrontend) Logf(msg string, args ...interface{}) { d.t.Logf(msg, args...) }
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func (d DummyFrontend) Fatalf(line int32, msg string, args ...interface{}) { d.t.Fatalf(msg, args...) }
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func (d DummyFrontend) Unimplementedf(line int32, msg string, args ...interface{}) {
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d.t.Fatalf(msg, args...)
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}
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func (d DummyFrontend) Warnl(line int, msg string, args ...interface{}) { d.t.Logf(msg, args...) }
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func (d DummyFrontend) Debug_checknil() bool { return false }
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func (d DummyFrontend) TypeBool() Type { return TypeBool }
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func (d DummyFrontend) TypeInt8() Type { return TypeInt8 }
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func (d DummyFrontend) TypeInt16() Type { return TypeInt16 }
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func (d DummyFrontend) TypeInt32() Type { return TypeInt32 }
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func (d DummyFrontend) TypeInt64() Type { return TypeInt64 }
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func (d DummyFrontend) TypeUInt8() Type { return TypeUInt8 }
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func (d DummyFrontend) TypeUInt16() Type { return TypeUInt16 }
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func (d DummyFrontend) TypeUInt32() Type { return TypeUInt32 }
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func (d DummyFrontend) TypeUInt64() Type { return TypeUInt64 }
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func (d DummyFrontend) TypeFloat32() Type { return TypeFloat32 }
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func (d DummyFrontend) TypeFloat64() Type { return TypeFloat64 }
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func (d DummyFrontend) TypeInt() Type { return TypeInt64 }
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func (d DummyFrontend) TypeUintptr() Type { return TypeUInt64 }
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func (d DummyFrontend) TypeString() Type { panic("unimplemented") }
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func (d DummyFrontend) TypeBytePtr() Type { return TypeBytePtr }
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func (d DummyFrontend) CanSSA(t Type) bool {
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// There are no un-SSAable types in dummy land.
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return true
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}
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