github.com/FenixAra/go@v0.0.0-20170127160404-96ea0918e670/src/cmd/compile/internal/ssa/export_test.go (about)

     1  // Copyright 2015 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package ssa
     6  
     7  import (
     8  	"cmd/internal/obj"
     9  	"cmd/internal/obj/x86"
    10  	"testing"
    11  )
    12  
    13  var CheckFunc = checkFunc
    14  var PrintFunc = printFunc
    15  var Opt = opt
    16  var Deadcode = deadcode
    17  var Copyelim = copyelim
    18  
    19  func testConfig(t testing.TB) *Config {
    20  	testCtxt := &obj.Link{Arch: &x86.Linkamd64}
    21  	return NewConfig("amd64", DummyFrontend{t}, testCtxt, true)
    22  }
    23  
    24  // DummyFrontend is a test-only frontend.
    25  // It assumes 64 bit integers and pointers.
    26  type DummyFrontend struct {
    27  	t testing.TB
    28  }
    29  
    30  func (DummyFrontend) StringData(s string) interface{} {
    31  	return nil
    32  }
    33  func (DummyFrontend) Auto(t Type) GCNode {
    34  	return nil
    35  }
    36  func (d DummyFrontend) SplitString(s LocalSlot) (LocalSlot, LocalSlot) {
    37  	return LocalSlot{s.N, d.TypeBytePtr(), s.Off}, LocalSlot{s.N, d.TypeInt(), s.Off + 8}
    38  }
    39  func (d DummyFrontend) SplitInterface(s LocalSlot) (LocalSlot, LocalSlot) {
    40  	return LocalSlot{s.N, d.TypeBytePtr(), s.Off}, LocalSlot{s.N, d.TypeBytePtr(), s.Off + 8}
    41  }
    42  func (d DummyFrontend) SplitSlice(s LocalSlot) (LocalSlot, LocalSlot, LocalSlot) {
    43  	return LocalSlot{s.N, s.Type.ElemType().PtrTo(), s.Off},
    44  		LocalSlot{s.N, d.TypeInt(), s.Off + 8},
    45  		LocalSlot{s.N, d.TypeInt(), s.Off + 16}
    46  }
    47  func (d DummyFrontend) SplitComplex(s LocalSlot) (LocalSlot, LocalSlot) {
    48  	if s.Type.Size() == 16 {
    49  		return LocalSlot{s.N, d.TypeFloat64(), s.Off}, LocalSlot{s.N, d.TypeFloat64(), s.Off + 8}
    50  	}
    51  	return LocalSlot{s.N, d.TypeFloat32(), s.Off}, LocalSlot{s.N, d.TypeFloat32(), s.Off + 4}
    52  }
    53  func (d DummyFrontend) SplitInt64(s LocalSlot) (LocalSlot, LocalSlot) {
    54  	if s.Type.IsSigned() {
    55  		return LocalSlot{s.N, d.TypeInt32(), s.Off + 4}, LocalSlot{s.N, d.TypeUInt32(), s.Off}
    56  	}
    57  	return LocalSlot{s.N, d.TypeUInt32(), s.Off + 4}, LocalSlot{s.N, d.TypeUInt32(), s.Off}
    58  }
    59  func (d DummyFrontend) SplitStruct(s LocalSlot, i int) LocalSlot {
    60  	return LocalSlot{s.N, s.Type.FieldType(i), s.Off + s.Type.FieldOff(i)}
    61  }
    62  func (d DummyFrontend) SplitArray(s LocalSlot) LocalSlot {
    63  	return LocalSlot{s.N, s.Type.ElemType(), s.Off}
    64  }
    65  func (DummyFrontend) Line(line int32) string {
    66  	return "unknown.go:0"
    67  }
    68  func (DummyFrontend) AllocFrame(f *Func) {
    69  }
    70  func (DummyFrontend) Syslook(s string) interface{} {
    71  	return DummySym(s)
    72  }
    73  
    74  func (d DummyFrontend) Logf(msg string, args ...interface{}) { d.t.Logf(msg, args...) }
    75  func (d DummyFrontend) Log() bool                            { return true }
    76  
    77  func (d DummyFrontend) Fatalf(line int32, msg string, args ...interface{}) { d.t.Fatalf(msg, args...) }
    78  func (d DummyFrontend) Warnl(line int32, msg string, args ...interface{})  { d.t.Logf(msg, args...) }
    79  func (d DummyFrontend) Debug_checknil() bool                               { return false }
    80  func (d DummyFrontend) Debug_wb() bool                                     { return false }
    81  
    82  func (d DummyFrontend) TypeBool() Type    { return TypeBool }
    83  func (d DummyFrontend) TypeInt8() Type    { return TypeInt8 }
    84  func (d DummyFrontend) TypeInt16() Type   { return TypeInt16 }
    85  func (d DummyFrontend) TypeInt32() Type   { return TypeInt32 }
    86  func (d DummyFrontend) TypeInt64() Type   { return TypeInt64 }
    87  func (d DummyFrontend) TypeUInt8() Type   { return TypeUInt8 }
    88  func (d DummyFrontend) TypeUInt16() Type  { return TypeUInt16 }
    89  func (d DummyFrontend) TypeUInt32() Type  { return TypeUInt32 }
    90  func (d DummyFrontend) TypeUInt64() Type  { return TypeUInt64 }
    91  func (d DummyFrontend) TypeFloat32() Type { return TypeFloat32 }
    92  func (d DummyFrontend) TypeFloat64() Type { return TypeFloat64 }
    93  func (d DummyFrontend) TypeInt() Type     { return TypeInt64 }
    94  func (d DummyFrontend) TypeUintptr() Type { return TypeUInt64 }
    95  func (d DummyFrontend) TypeString() Type  { panic("unimplemented") }
    96  func (d DummyFrontend) TypeBytePtr() Type { return TypeBytePtr }
    97  
    98  func (d DummyFrontend) CanSSA(t Type) bool {
    99  	// There are no un-SSAable types in dummy land.
   100  	return true
   101  }
   102  
   103  type DummySym string
   104  
   105  func (s DummySym) String() string { return string(s) }