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path: root/src/cmd/compile/internal/gc/main.go
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Diffstat (limited to 'src/cmd/compile/internal/gc/main.go')
-rw-r--r--src/cmd/compile/internal/gc/main.go164
1 files changed, 20 insertions, 144 deletions
diff --git a/src/cmd/compile/internal/gc/main.go b/src/cmd/compile/internal/gc/main.go
index e66b877fd0..154235f744 100644
--- a/src/cmd/compile/internal/gc/main.go
+++ b/src/cmd/compile/internal/gc/main.go
@@ -17,6 +17,7 @@ import (
"cmd/compile/internal/noder"
"cmd/compile/internal/reflectdata"
"cmd/compile/internal/ssa"
+ "cmd/compile/internal/ssagen"
"cmd/compile/internal/staticdata"
"cmd/compile/internal/typecheck"
"cmd/compile/internal/types"
@@ -26,12 +27,9 @@ import (
"cmd/internal/src"
"flag"
"fmt"
- "io/ioutil"
"log"
"os"
"runtime"
- "sort"
- "strings"
)
func hidePanic() {
@@ -52,14 +50,14 @@ func hidePanic() {
// Main parses flags and Go source files specified in the command-line
// arguments, type-checks the parsed Go package, compiles functions to machine
// code, and finally writes the compiled package definition to disk.
-func Main(archInit func(*Arch)) {
+func Main(archInit func(*ssagen.ArchInfo)) {
base.Timer.Start("fe", "init")
defer hidePanic()
- archInit(&thearch)
+ archInit(&ssagen.Arch)
- base.Ctxt = obj.Linknew(thearch.LinkArch)
+ base.Ctxt = obj.Linknew(ssagen.Arch.LinkArch)
base.Ctxt.DiagFunc = base.Errorf
base.Ctxt.DiagFlush = base.FlushErrors
base.Ctxt.Bso = bufio.NewWriter(os.Stdout)
@@ -151,7 +149,7 @@ func Main(archInit func(*Arch)) {
types.ParseLangFlag()
if base.Flag.SymABIs != "" {
- readSymABIs(base.Flag.SymABIs, base.Ctxt.Pkgpath)
+ ssagen.ReadSymABIs(base.Flag.SymABIs, base.Ctxt.Pkgpath)
}
if base.Compiling(base.NoInstrumentPkgs) {
@@ -159,7 +157,7 @@ func Main(archInit func(*Arch)) {
base.Flag.MSan = false
}
- thearch.LinkArch.Init(base.Ctxt)
+ ssagen.Arch.LinkArch.Init(base.Ctxt)
startProfile()
if base.Flag.Race {
ir.Pkgs.Race = types.NewPkg("runtime/race", "")
@@ -174,7 +172,7 @@ func Main(archInit func(*Arch)) {
dwarf.EnableLogging(base.Debug.DwarfInl != 0)
}
if base.Debug.SoftFloat != 0 {
- thearch.SoftFloat = true
+ ssagen.Arch.SoftFloat = true
}
if base.Flag.JSON != "" { // parse version,destination from json logging optimization.
@@ -182,14 +180,14 @@ func Main(archInit func(*Arch)) {
}
ir.EscFmt = escape.Fmt
- ir.IsIntrinsicCall = isIntrinsicCall
- inline.SSADumpInline = ssaDumpInline
- initSSAEnv()
- initSSATables()
-
- types.PtrSize = thearch.LinkArch.PtrSize
- types.RegSize = thearch.LinkArch.RegSize
- types.MaxWidth = thearch.MAXWIDTH
+ ir.IsIntrinsicCall = ssagen.IsIntrinsicCall
+ inline.SSADumpInline = ssagen.DumpInline
+ ssagen.InitEnv()
+ ssagen.InitTables()
+
+ types.PtrSize = ssagen.Arch.LinkArch.PtrSize
+ types.RegSize = ssagen.Arch.LinkArch.RegSize
+ types.MaxWidth = ssagen.Arch.MAXWIDTH
types.TypeLinkSym = func(t *types.Type) *obj.LSym {
return reflectdata.TypeSym(t).Linksym()
}
@@ -210,7 +208,7 @@ func Main(archInit func(*Arch)) {
// Parse input.
base.Timer.Start("fe", "parse")
lines := noder.ParseFiles(flag.Args())
- cgoSymABIs()
+ ssagen.CgoSymABIs()
base.Timer.Stop()
base.Timer.AddEvent(int64(lines), "lines")
recordPackageName()
@@ -257,7 +255,7 @@ func Main(archInit func(*Arch)) {
// We'll do the final check after write barriers are
// inserted.
if base.Flag.CompilingRuntime {
- EnableNoWriteBarrierRecCheck()
+ ssagen.EnableNoWriteBarrierRecCheck()
}
// Transform closure bodies to properly reference captured variables.
@@ -277,7 +275,7 @@ func Main(archInit func(*Arch)) {
// Prepare for SSA compilation.
// This must be before peekitabs, because peekitabs
// can trigger function compilation.
- initssaconfig()
+ ssagen.InitConfig()
// Just before compilation, compile itabs found on
// the right side of OCONVIFACE so that methods
@@ -302,7 +300,7 @@ func Main(archInit func(*Arch)) {
if base.Flag.CompilingRuntime {
// Write barriers are now known. Check the call graph.
- NoWriteBarrierRecCheck()
+ ssagen.NoWriteBarrierRecCheck()
}
// Finalize DWARF inline routine DIEs, then explicitly turn off
@@ -323,7 +321,7 @@ func Main(archInit func(*Arch)) {
dumpasmhdr()
}
- CheckLargeStacks()
+ ssagen.CheckLargeStacks()
typecheck.CheckFuncStack()
if len(compilequeue) != 0 {
@@ -343,34 +341,6 @@ func Main(archInit func(*Arch)) {
}
}
-func CheckLargeStacks() {
- // Check whether any of the functions we have compiled have gigantic stack frames.
- sort.Slice(largeStackFrames, func(i, j int) bool {
- return largeStackFrames[i].pos.Before(largeStackFrames[j].pos)
- })
- for _, large := range largeStackFrames {
- if large.callee != 0 {
- base.ErrorfAt(large.pos, "stack frame too large (>1GB): %d MB locals + %d MB args + %d MB callee", large.locals>>20, large.args>>20, large.callee>>20)
- } else {
- base.ErrorfAt(large.pos, "stack frame too large (>1GB): %d MB locals + %d MB args", large.locals>>20, large.args>>20)
- }
- }
-}
-
-func cgoSymABIs() {
- // The linker expects an ABI0 wrapper for all cgo-exported
- // functions.
- for _, prag := range typecheck.Target.CgoPragmas {
- switch prag[0] {
- case "cgo_export_static", "cgo_export_dynamic":
- if symabiRefs == nil {
- symabiRefs = make(map[string]obj.ABI)
- }
- symabiRefs[prag[1]] = obj.ABI0
- }
- }
-}
-
func writebench(filename string) error {
f, err := os.OpenFile(filename, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0666)
if err != nil {
@@ -394,77 +364,6 @@ func writebench(filename string) error {
return f.Close()
}
-// symabiDefs and symabiRefs record the defined and referenced ABIs of
-// symbols required by non-Go code. These are keyed by link symbol
-// name, where the local package prefix is always `"".`
-var symabiDefs, symabiRefs map[string]obj.ABI
-
-// readSymABIs reads a symabis file that specifies definitions and
-// references of text symbols by ABI.
-//
-// The symabis format is a set of lines, where each line is a sequence
-// of whitespace-separated fields. The first field is a verb and is
-// either "def" for defining a symbol ABI or "ref" for referencing a
-// symbol using an ABI. For both "def" and "ref", the second field is
-// the symbol name and the third field is the ABI name, as one of the
-// named cmd/internal/obj.ABI constants.
-func readSymABIs(file, myimportpath string) {
- data, err := ioutil.ReadFile(file)
- if err != nil {
- log.Fatalf("-symabis: %v", err)
- }
-
- symabiDefs = make(map[string]obj.ABI)
- symabiRefs = make(map[string]obj.ABI)
-
- localPrefix := ""
- if myimportpath != "" {
- // Symbols in this package may be written either as
- // "".X or with the package's import path already in
- // the symbol.
- localPrefix = objabi.PathToPrefix(myimportpath) + "."
- }
-
- for lineNum, line := range strings.Split(string(data), "\n") {
- lineNum++ // 1-based
- line = strings.TrimSpace(line)
- if line == "" || strings.HasPrefix(line, "#") {
- continue
- }
-
- parts := strings.Fields(line)
- switch parts[0] {
- case "def", "ref":
- // Parse line.
- if len(parts) != 3 {
- log.Fatalf(`%s:%d: invalid symabi: syntax is "%s sym abi"`, file, lineNum, parts[0])
- }
- sym, abistr := parts[1], parts[2]
- abi, valid := obj.ParseABI(abistr)
- if !valid {
- log.Fatalf(`%s:%d: invalid symabi: unknown abi "%s"`, file, lineNum, abistr)
- }
-
- // If the symbol is already prefixed with
- // myimportpath, rewrite it to start with ""
- // so it matches the compiler's internal
- // symbol names.
- if localPrefix != "" && strings.HasPrefix(sym, localPrefix) {
- sym = `"".` + sym[len(localPrefix):]
- }
-
- // Record for later.
- if parts[0] == "def" {
- symabiDefs[sym] = abi
- } else {
- symabiRefs[sym] = abi
- }
- default:
- log.Fatalf(`%s:%d: invalid symabi type "%s"`, file, lineNum, parts[0])
- }
- }
-}
-
// recordFlags records the specified command-line flags to be placed
// in the DWARF info.
func recordFlags(flags ...string) {
@@ -532,29 +431,6 @@ func recordPackageName() {
s.P = []byte(types.LocalPkg.Name)
}
-// useNewABIWrapGen returns TRUE if the compiler should generate an
-// ABI wrapper for the function 'f'.
-func useABIWrapGen(f *ir.Func) bool {
- if !base.Flag.ABIWrap {
- return false
- }
-
- // Support limit option for bisecting.
- if base.Flag.ABIWrapLimit == 1 {
- return false
- }
- if base.Flag.ABIWrapLimit < 1 {
- return true
- }
- base.Flag.ABIWrapLimit--
- if base.Debug.ABIWrap != 0 && base.Flag.ABIWrapLimit == 1 {
- fmt.Fprintf(os.Stderr, "=-= limit reached after new wrapper for %s\n",
- f.LSym.Name)
- }
-
- return true
-}
-
func makePos(b *src.PosBase, line, col uint) src.XPos {
return base.Ctxt.PosTable.XPos(src.MakePos(b, line, col))
}
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