mirror of
https://github.com/golang/go
synced 2024-09-04 23:44:16 +00:00
[dev.typeparams] cmd/compile: cleanup unified IR file format a little
This CL makes two changes: 1. It moves object symbols and code tags into a new "relocName" relocation, which should eventually allow getting rid of objStub. 2. It moves the type parameter data into the relocObjDict relocation, so everything related to writing out dictionaries is contained there. Change-Id: If0f7ff7d9384e8664957c3180bf6f20e97bcff6e Reviewed-on: https://go-review.googlesource.com/c/go/+/336051 Trust: Matthew Dempsky <mdempsky@google.com> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
This commit is contained in:
parent
d5f6ba943c
commit
897970688b
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@ -110,7 +110,7 @@ func (l *linker) relocPkg(pr *pkgReader, idx int) int {
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}
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func (l *linker) relocObj(pr *pkgReader, idx int) int {
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path, name, tag, _ := pr.peekObj(idx)
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path, name, tag := pr.peekObj(idx)
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sym := types.NewPkg(path, "").Lookup(name)
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if newidx, ok := l.decls[sym]; ok {
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@ -127,7 +127,7 @@ func (l *linker) relocObj(pr *pkgReader, idx int) int {
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pr = pri.pr
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idx = pri.idx
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path2, name2, tag2, _ := pr.peekObj(idx)
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path2, name2, tag2 := pr.peekObj(idx)
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sym2 := types.NewPkg(path2, "").Lookup(name2)
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assert(sym == sym2)
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assert(tag2 != objStub)
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@ -135,13 +135,16 @@ func (l *linker) relocObj(pr *pkgReader, idx int) int {
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w := l.pw.newEncoderRaw(relocObj)
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wext := l.pw.newEncoderRaw(relocObjExt)
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wname := l.pw.newEncoderRaw(relocName)
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wdict := l.pw.newEncoderRaw(relocObjDict)
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l.decls[sym] = w.idx
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assert(wext.idx == w.idx)
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assert(wname.idx == w.idx)
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assert(wdict.idx == w.idx)
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l.relocCommon(pr, &w, relocObj, idx)
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l.relocCommon(pr, &wname, relocName, idx)
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l.relocCommon(pr, &wdict, relocObjDict, idx)
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var obj *ir.Name
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@ -279,33 +282,15 @@ func (pr *pkgDecoder) peekPkgPath(idx int) string {
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return path
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}
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func (pr *pkgDecoder) peekObj(idx int) (string, string, codeObj, []int) {
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r := pr.newDecoder(relocObj, idx, syncObject1)
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func (pr *pkgDecoder) peekObj(idx int) (string, string, codeObj) {
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r := pr.newDecoder(relocName, idx, syncObject1)
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r.sync(syncSym)
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r.sync(syncPkg)
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path := pr.peekPkgPath(r.reloc(relocPkg))
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name := r.string()
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assert(name != "")
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r.sync(syncTypeParamBounds)
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r.len() // implicits
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bounds := make([]int, r.len())
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for i := range bounds {
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r.sync(syncType)
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if r.bool() {
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r.len()
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} else {
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r.reloc(relocType)
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}
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// TODO(mdempsky): This result now needs to include the 'derived'
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// bool too, but none of the callers currently depend on it
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// anyway. Either fix it to be meaningful, or just get rid of it
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// altogether.
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bounds[i] = -1
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}
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tag := codeObj(r.code(syncCodeObj))
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return path, name, tag, bounds
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return path, name, tag
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}
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@ -534,18 +534,10 @@ func (r *reader) obj() ir.Node {
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}
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func (pr *pkgReader) objIdx(idx int, implicits, explicits []*types.Type) ir.Node {
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r := pr.newReader(relocObj, idx, syncObject1)
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r.ext = pr.newReader(relocObjExt, idx, syncObject1)
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rname := pr.newReader(relocName, idx, syncObject1)
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_, sym := rname.qualifiedIdent()
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tag := codeObj(rname.code(syncCodeObj))
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_, sym := r.qualifiedIdent()
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dict := &readerDict{}
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r.dict = dict
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r.ext.dict = dict
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r.typeParamBounds(sym, implicits, explicits)
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tag := codeObj(r.code(syncCodeObj))
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if tag == objStub {
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assert(!sym.IsBlank())
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switch sym.Pkg {
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@ -556,30 +548,19 @@ func (pr *pkgReader) objIdx(idx int, implicits, explicits []*types.Type) ir.Node
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return pri.pr.objIdx(pri.idx, nil, explicits)
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}
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if haveLegacyImports {
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assert(!r.hasTypeParams())
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assert(len(explicits) == 0)
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return typecheck.Resolve(ir.NewIdent(src.NoXPos, sym))
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}
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base.Fatalf("unresolved stub: %v", sym)
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}
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{
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rdict := pr.newReader(relocObjDict, idx, syncObject1)
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r.dict.derived = make([]derivedInfo, rdict.len())
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r.dict.derivedTypes = make([]*types.Type, len(r.dict.derived))
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for i := range r.dict.derived {
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r.dict.derived[i] = derivedInfo{rdict.reloc(relocType), rdict.bool()}
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}
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r.dict.funcs = make([]objInfo, rdict.len())
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r.dict.funcsObj = make([]ir.Node, len(r.dict.funcs))
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for i := range r.dict.funcs {
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objIdx := rdict.reloc(relocObj)
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targs := make([]typeInfo, rdict.len())
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for j := range targs {
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targs[j] = rdict.typInfo()
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}
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r.dict.funcs[i] = objInfo{idx: objIdx, explicits: targs}
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}
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}
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dict := pr.objDictIdx(sym, idx, implicits, explicits)
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r := pr.newReader(relocObj, idx, syncObject1)
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r.ext = pr.newReader(relocObjExt, idx, syncObject1)
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r.dict = dict
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r.ext.dict = dict
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sym = r.mangle(sym)
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if !sym.IsBlank() && sym.Def != nil {
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@ -692,8 +673,10 @@ func (r *reader) mangle(sym *types.Sym) *types.Sym {
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return sym.Pkg.Lookup(buf.String())
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}
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func (r *reader) typeParamBounds(sym *types.Sym, implicits, explicits []*types.Type) {
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r.sync(syncTypeParamBounds)
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func (pr *pkgReader) objDictIdx(sym *types.Sym, idx int, implicits, explicits []*types.Type) *readerDict {
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r := pr.newReader(relocObjDict, idx, syncObject1)
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var dict readerDict
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nimplicits := r.len()
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nexplicits := r.len()
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@ -702,12 +685,11 @@ func (r *reader) typeParamBounds(sym *types.Sym, implicits, explicits []*types.T
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base.Fatalf("%v has %v+%v params, but instantiated with %v+%v args", sym, nimplicits, nexplicits, len(implicits), len(explicits))
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}
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r.dict.targs = append(implicits[:nimplicits:nimplicits], explicits...)
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r.dict.implicits = nimplicits
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dict.targs = append(implicits[:nimplicits:nimplicits], explicits...)
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dict.implicits = nimplicits
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// For stenciling, we can just skip over the type parameters.
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for range r.dict.targs[r.dict.implicits:] {
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for range dict.targs[dict.implicits:] {
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// Skip past bounds without actually evaluating them.
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r.sync(syncType)
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if r.bool() {
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@ -716,6 +698,25 @@ func (r *reader) typeParamBounds(sym *types.Sym, implicits, explicits []*types.T
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r.reloc(relocType)
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}
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}
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dict.derived = make([]derivedInfo, r.len())
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dict.derivedTypes = make([]*types.Type, len(dict.derived))
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for i := range dict.derived {
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dict.derived[i] = derivedInfo{r.reloc(relocType), r.bool()}
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}
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dict.funcs = make([]objInfo, r.len())
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dict.funcsObj = make([]ir.Node, len(dict.funcs))
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for i := range dict.funcs {
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objIdx := r.reloc(relocObj)
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targs := make([]typeInfo, r.len())
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for j := range targs {
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targs[j] = r.typInfo()
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}
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dict.funcs[i] = objInfo{idx: objIdx, explicits: targs}
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}
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return &dict
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}
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func (r *reader) typeParamNames() {
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@ -790,7 +791,11 @@ func (r *reader) selector() (origPkg *types.Pkg, sym *types.Sym) {
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}
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func (r *reader) hasTypeParams() bool {
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return r.dict != nil && len(r.dict.targs) != 0
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return r.dict.hasTypeParams()
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}
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func (dict *readerDict) hasTypeParams() bool {
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return dict != nil && len(dict.targs) != 0
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}
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// @@@ Compiler extensions
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@ -358,29 +358,22 @@ func (r *reader2) obj() (types2.Object, []types2.Type) {
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}
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func (pr *pkgReader2) objIdx(idx int) (*types2.Package, string) {
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r := pr.newReader(relocObj, idx, syncObject1)
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r.dict = &reader2Dict{}
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rname := pr.newReader(relocName, idx, syncObject1)
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objPkg, objName := r.qualifiedIdent()
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objPkg, objName := rname.qualifiedIdent()
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assert(objName != "")
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r.typeParamBounds()
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tag := codeObj(r.code(syncCodeObj))
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tag := codeObj(rname.code(syncCodeObj))
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if tag == objStub {
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assert(objPkg == nil)
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return objPkg, objName
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}
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{
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rdict := r.p.newReader(relocObjDict, idx, syncObject1)
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r.dict.derived = make([]derivedInfo, rdict.len())
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r.dict.derivedTypes = make([]types2.Type, len(r.dict.derived))
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for i := range r.dict.derived {
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r.dict.derived[i] = derivedInfo{rdict.reloc(relocType), rdict.bool()}
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}
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// function references follow, but reader2 doesn't need those
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}
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dict := pr.objDictIdx(idx)
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r := pr.newReader(relocObj, idx, syncObject1)
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r.dict = dict
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objPkg.Scope().InsertLazy(objName, func() types2.Object {
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switch tag {
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@ -439,17 +432,29 @@ func (r *reader2) value() (types2.Type, constant.Value) {
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return r.typ(), r.rawValue()
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}
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func (r *reader2) typeParamBounds() {
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r.sync(syncTypeParamBounds)
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func (pr *pkgReader2) objDictIdx(idx int) *reader2Dict {
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r := pr.newReader(relocObjDict, idx, syncObject1)
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var dict reader2Dict
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if implicits := r.len(); implicits != 0 {
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base.Fatalf("unexpected object with %v implicit type parameter(s)", implicits)
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}
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r.dict.bounds = make([]typeInfo, r.len())
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for i := range r.dict.bounds {
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r.dict.bounds[i] = r.typInfo()
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dict.bounds = make([]typeInfo, r.len())
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for i := range dict.bounds {
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dict.bounds[i] = r.typInfo()
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}
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dict.derived = make([]derivedInfo, r.len())
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dict.derivedTypes = make([]types2.Type, len(dict.derived))
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for i := range dict.derived {
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dict.derived[i] = derivedInfo{r.reloc(relocType), r.bool()}
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}
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// function references follow, but reader2 doesn't need those
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return &dict
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}
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func (r *reader2) typeParamNames() []*types2.TypeName {
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@ -31,6 +31,7 @@ const (
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relocMeta
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relocPosBase
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relocPkg
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relocName
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relocType
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relocObj
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relocObjExt
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@ -183,4 +183,5 @@ const (
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syncTypeParamNames
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syncTypeParamBounds
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syncImplicitTypes
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syncObjectName
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)
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@ -263,7 +263,7 @@ func readPackage(pr *pkgReader, importpkg *types.Pkg) {
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idx := r.reloc(relocObj)
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assert(r.len() == 0)
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path, name, code, _ := r.p.peekObj(idx)
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path, name, code := r.p.peekObj(idx)
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if code != objStub {
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objReader[types.NewPkg(path, "").Lookup(name)] = pkgReaderIndex{pr, idx, nil}
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}
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@ -298,7 +298,7 @@ func writeNewExport(out io.Writer) {
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idx := r.reloc(relocObj)
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assert(r.len() == 0)
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xpath, xname, xtag, _ := pr.peekObj(idx)
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xpath, xname, xtag := pr.peekObj(idx)
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assert(xpath == pr.pkgPath)
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assert(xtag != objStub)
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@ -505,60 +505,45 @@ func (pw *pkgWriter) objIdx(obj types2.Object) int {
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w := pw.newWriter(relocObj, syncObject1)
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w.ext = pw.newWriter(relocObjExt, syncObject1)
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wname := pw.newWriter(relocName, syncObject1)
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wdict := pw.newWriter(relocObjDict, syncObject1)
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pw.globalsIdx[obj] = w.idx // break cycles
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assert(w.ext.idx == w.idx)
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assert(wname.idx == w.idx)
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assert(wdict.idx == w.idx)
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w.dict = dict
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w.ext.dict = dict
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// Ident goes first so importer can avoid unnecessary work if
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// they've already resolved this object.
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w.qualifiedIdent(obj)
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w.typeParamBounds(objTypeParams(obj))
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w.doObj(obj)
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code := w.doObj(obj)
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w.flush()
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w.ext.flush()
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// Done writing out the object description; write out the list of
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// derived types and instantiated functions found along the way.
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wdict.len(len(dict.derived))
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for _, typ := range dict.derived {
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wdict.reloc(relocType, typ.idx)
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wdict.bool(typ.needed)
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}
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wdict.len(len(dict.funcs))
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for _, fn := range dict.funcs {
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wdict.reloc(relocObj, fn.idx)
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wdict.len(len(fn.explicits))
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for _, targ := range fn.explicits {
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wdict.typInfo(targ)
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}
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}
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wname.qualifiedIdent(obj)
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wname.code(code)
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wname.flush()
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wdict.objDict(obj, w.dict)
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wdict.flush()
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return w.idx
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}
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func (w *writer) doObj(obj types2.Object) {
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func (w *writer) doObj(obj types2.Object) codeObj {
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if obj.Pkg() != w.p.curpkg {
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w.code(objStub)
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return
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return objStub
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}
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switch obj := obj.(type) {
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default:
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w.p.unexpected("object", obj)
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panic("unreachable")
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case *types2.Const:
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w.code(objConst)
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w.pos(obj)
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w.value(obj.Type(), obj.Val())
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return objConst
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case *types2.Func:
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decl, ok := w.p.funDecls[obj]
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@ -584,28 +569,26 @@ func (w *writer) doObj(obj types2.Object) {
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sig = types2.NewSignature(nil, types2.NewTuple(params...), sig.Results(), sig.Variadic())
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}
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w.code(objFunc)
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w.pos(obj)
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w.typeParamNames(sig.TParams())
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w.signature(sig)
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w.pos(decl)
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w.ext.funcExt(obj)
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return objFunc
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case *types2.TypeName:
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decl, ok := w.p.typDecls[obj]
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assert(ok)
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if obj.IsAlias() {
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w.code(objAlias)
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w.pos(obj)
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w.typ(obj.Type())
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break
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return objAlias
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}
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named := obj.Type().(*types2.Named)
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assert(named.TArgs() == nil)
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w.code(objType)
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w.pos(obj)
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w.typeParamNames(named.TParams())
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w.ext.typeExt(obj)
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@ -616,11 +599,13 @@ func (w *writer) doObj(obj types2.Object) {
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w.method(named.Method(i))
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}
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return objType
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case *types2.Var:
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w.code(objVar)
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w.pos(obj)
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w.typ(obj.Type())
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w.ext.varExt(obj)
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return objVar
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}
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}
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@ -638,15 +623,41 @@ func (w *writer) value(typ types2.Type, val constant.Value) {
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w.rawValue(val)
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}
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func (w *writer) typeParamBounds(tparams []*types2.TypeName) {
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w.sync(syncTypeParamBounds)
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// objDict writes the dictionary needed for reading the given object.
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func (w *writer) objDict(obj types2.Object, dict *writerDict) {
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// TODO(mdempsky): Split objDict into multiple entries? reader.go
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// doesn't care about the type parameter bounds, and reader2.go
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// doesn't care about referenced functions.
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|
||||
w.len(len(w.dict.implicits))
|
||||
w.dict = dict // TODO(mdempsky): This is a bit sketchy.
|
||||
|
||||
w.len(len(dict.implicits))
|
||||
|
||||
tparams := objTypeParams(obj)
|
||||
w.len(len(tparams))
|
||||
for _, tparam := range tparams {
|
||||
w.typ(tparam.Type().(*types2.TypeParam).Bound())
|
||||
}
|
||||
|
||||
nderived := len(dict.derived)
|
||||
w.len(nderived)
|
||||
for _, typ := range dict.derived {
|
||||
w.reloc(relocType, typ.idx)
|
||||
w.bool(typ.needed)
|
||||
}
|
||||
|
||||
nfuncs := len(dict.funcs)
|
||||
w.len(nfuncs)
|
||||
for _, fn := range dict.funcs {
|
||||
w.reloc(relocObj, fn.idx)
|
||||
w.len(len(fn.explicits))
|
||||
for _, targ := range fn.explicits {
|
||||
w.typInfo(targ)
|
||||
}
|
||||
}
|
||||
|
||||
assert(len(dict.derived) == nderived)
|
||||
assert(len(dict.funcs) == nfuncs)
|
||||
}
|
||||
|
||||
func (w *writer) typeParamNames(tparams []*types2.TypeName) {
|
||||
|
|
Loading…
Reference in a new issue