diff options
Diffstat (limited to 'src/cmd/compile/internal/gc/ssa.go')
| -rw-r--r-- | src/cmd/compile/internal/gc/ssa.go | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/src/cmd/compile/internal/gc/ssa.go b/src/cmd/compile/internal/gc/ssa.go index f8aefaae5e..c769efe8cd 100644 --- a/src/cmd/compile/internal/gc/ssa.go +++ b/src/cmd/compile/internal/gc/ssa.go @@ -4384,6 +4384,7 @@ func genssa(f *ssa.Func, pp *Progs) { s.pp = pp var progToValue map[*obj.Prog]*ssa.Value var progToBlock map[*obj.Prog]*ssa.Block + var valueToProg []*obj.Prog var logProgs = e.log if logProgs { progToValue = make(map[*obj.Prog]*ssa.Value, f.NumValues()) @@ -4398,6 +4399,11 @@ func genssa(f *ssa.Func, pp *Progs) { s.ScratchFpMem = e.scratchFpMem + logLocationLists := Debug_locationlist != 0 + if Ctxt.Flag_locationlists { + e.curfn.Func.DebugInfo = ssa.BuildFuncDebug(f, logLocationLists) + valueToProg = make([]*obj.Prog, f.NumValues()) + } // Emit basic blocks for i, b := range f.Blocks { s.bstart[b.ID] = s.pp.next @@ -4438,12 +4444,16 @@ func genssa(f *ssa.Func, pp *Progs) { } case ssa.OpPhi: CheckLoweredPhi(v) - + case ssa.OpRegKill: + // nothing to do default: // let the backend handle it thearch.SSAGenValue(&s, v) } + if Ctxt.Flag_locationlists { + valueToProg[v.ID] = x + } if logProgs { for ; x != s.pp.next; x = x.Link { progToValue[x] = v @@ -4469,6 +4479,22 @@ func genssa(f *ssa.Func, pp *Progs) { } } + if Ctxt.Flag_locationlists { + for _, locList := range e.curfn.Func.DebugInfo.Variables { + for _, loc := range locList.Locations { + loc.StartProg = valueToProg[loc.Start.ID] + if loc.End == nil { + Fatalf("empty loc %v compiling %v", loc, f.Name) + } + loc.EndProg = valueToProg[loc.End.ID] + if !logLocationLists { + loc.Start = nil + loc.End = nil + } + } + } + } + // Resolve branches for _, br := range s.Branches { br.P.To.Val = s.bstart[br.B.ID] |