Index: lib/Target/Mips/Mips16ISelLowering.cpp =================================================================== --- lib/Target/Mips/Mips16ISelLowering.cpp +++ lib/Target/Mips/Mips16ISelLowering.cpp @@ -497,14 +497,14 @@ SDValue JumpTarget = Callee; // T9 should contain the address of the callee function if - // -reloction-model=pic or it is an indirect call. + // -relocation-model=pic or it is an indirect call. if (IsPICCall || !GlobalOrExternal) { unsigned V0Reg = Mips::V0; if (NeedMips16Helper) { RegsToPass.push_front(std::make_pair(V0Reg, Callee)); JumpTarget = DAG.getExternalSymbol(Mips16HelperFunction, getPointerTy()); ExternalSymbolSDNode *S = cast(JumpTarget); - JumpTarget = getAddrGlobal(S, JumpTarget.getValueType(), DAG, + JumpTarget = getAddrGlobal(S, CLI.DL, JumpTarget.getValueType(), DAG, MipsII::MO_GOT, Chain, FuncInfo->callPtrInfo(S->getSymbol())); } else Index: lib/Target/Mips/MipsISelLowering.h =================================================================== --- lib/Target/Mips/MipsISelLowering.h +++ lib/Target/Mips/MipsISelLowering.h @@ -272,9 +272,8 @@ // // (add (load (wrapper $gp, %got(sym)), %lo(sym)) template - SDValue getAddrLocal(NodeTy *N, EVT Ty, SelectionDAG &DAG, + SDValue getAddrLocal(NodeTy *N, SDLoc DL, EVT Ty, SelectionDAG &DAG, bool IsN32OrN64) const { - SDLoc DL(N); unsigned GOTFlag = IsN32OrN64 ? MipsII::MO_GOT_PAGE : MipsII::MO_GOT; SDValue GOT = DAG.getNode(MipsISD::Wrapper, DL, Ty, getGlobalReg(DAG, Ty), getTargetNode(N, Ty, DAG, GOTFlag)); @@ -291,11 +290,10 @@ // computing a global symbol's address: // // (load (wrapper $gp, %got(sym))) - template - SDValue getAddrGlobal(NodeTy *N, EVT Ty, SelectionDAG &DAG, + template + SDValue getAddrGlobal(NodeTy *N, SDLoc DL, EVT Ty, SelectionDAG &DAG, unsigned Flag, SDValue Chain, const MachinePointerInfo &PtrInfo) const { - SDLoc DL(N); SDValue Tgt = DAG.getNode(MipsISD::Wrapper, DL, Ty, getGlobalReg(DAG, Ty), getTargetNode(N, Ty, DAG, Flag)); return DAG.getLoad(Ty, DL, Chain, Tgt, PtrInfo, false, false, false, 0); @@ -305,14 +303,13 @@ // computing a global symbol's address in large-GOT mode: // // (load (wrapper (add %hi(sym), $gp), %lo(sym))) - template - SDValue getAddrGlobalLargeGOT(NodeTy *N, EVT Ty, SelectionDAG &DAG, - unsigned HiFlag, unsigned LoFlag, - SDValue Chain, + template + SDValue getAddrGlobalLargeGOT(NodeTy *N, SDLoc DL, EVT Ty, + SelectionDAG &DAG, unsigned HiFlag, + unsigned LoFlag, SDValue Chain, const MachinePointerInfo &PtrInfo) const { - SDLoc DL(N); - SDValue Hi = DAG.getNode(MipsISD::Hi, DL, Ty, - getTargetNode(N, Ty, DAG, HiFlag)); + SDValue Hi = + DAG.getNode(MipsISD::Hi, DL, Ty, getTargetNode(N, Ty, DAG, HiFlag)); Hi = DAG.getNode(ISD::ADD, DL, Ty, Hi, getGlobalReg(DAG, Ty)); SDValue Wrapper = DAG.getNode(MipsISD::Wrapper, DL, Ty, Hi, getTargetNode(N, Ty, DAG, LoFlag)); @@ -324,9 +321,9 @@ // computing a symbol's address in non-PIC mode: // // (add %hi(sym), %lo(sym)) - template - SDValue getAddrNonPIC(NodeTy *N, EVT Ty, SelectionDAG &DAG) const { - SDLoc DL(N); + template + SDValue getAddrNonPIC(NodeTy *N, SDLoc DL, EVT Ty, + SelectionDAG &DAG) const { SDValue Hi = getTargetNode(N, Ty, DAG, MipsII::MO_ABS_HI); SDValue Lo = getTargetNode(N, Ty, DAG, MipsII::MO_ABS_LO); return DAG.getNode(ISD::ADD, DL, Ty, @@ -338,9 +335,8 @@ // computing a symbol's address using gp-relative addressing: // // (add $gp, %gp_rel(sym)) - template - SDValue getAddrGPRel(NodeTy *N, EVT Ty, SelectionDAG &DAG) const { - SDLoc DL(N); + template + SDValue getAddrGPRel(NodeTy *N, SDLoc DL, EVT Ty, SelectionDAG &DAG) const { assert(Ty == MVT::i32); SDValue GPRel = getTargetNode(N, Ty, DAG, MipsII::MO_GPREL); return DAG.getNode(ISD::ADD, DL, Ty, Index: lib/Target/Mips/MipsISelLowering.cpp =================================================================== --- lib/Target/Mips/MipsISelLowering.cpp +++ lib/Target/Mips/MipsISelLowering.cpp @@ -1613,22 +1613,22 @@ if (TLOF.IsGlobalInSmallSection(GV, getTargetMachine())) // %gp_rel relocation - return getAddrGPRel(N, Ty, DAG); + return getAddrGPRel(N, SDLoc(N), Ty, DAG); // %hi/%lo relocation - return getAddrNonPIC(N, Ty, DAG); + return getAddrNonPIC(N, SDLoc(N), Ty, DAG); } if (GV->hasInternalLinkage() || (GV->hasLocalLinkage() && !isa(GV))) - return getAddrLocal(N, Ty, DAG, + return getAddrLocal(N, SDLoc(N), Ty, DAG, Subtarget.isABI_N32() || Subtarget.isABI_N64()); if (LargeGOT) - return getAddrGlobalLargeGOT(N, Ty, DAG, MipsII::MO_GOT_HI16, + return getAddrGlobalLargeGOT(N, SDLoc(N), Ty, DAG, MipsII::MO_GOT_HI16, MipsII::MO_GOT_LO16, DAG.getEntryNode(), MachinePointerInfo::getGOT()); - return getAddrGlobal(N, Ty, DAG, + return getAddrGlobal(N, SDLoc(N), Ty, DAG, (Subtarget.isABI_N32() || Subtarget.isABI_N64()) ? MipsII::MO_GOT_DISP : MipsII::MO_GOT16, @@ -1642,9 +1642,9 @@ if (getTargetMachine().getRelocationModel() != Reloc::PIC_ && !Subtarget.isABI_N64()) - return getAddrNonPIC(N, Ty, DAG); + return getAddrNonPIC(N, SDLoc(N), Ty, DAG); - return getAddrLocal(N, Ty, DAG, + return getAddrLocal(N, SDLoc(N), Ty, DAG, Subtarget.isABI_N32() || Subtarget.isABI_N64()); } @@ -1735,9 +1735,9 @@ if (getTargetMachine().getRelocationModel() != Reloc::PIC_ && !Subtarget.isABI_N64()) - return getAddrNonPIC(N, Ty, DAG); + return getAddrNonPIC(N, SDLoc(N), Ty, DAG); - return getAddrLocal(N, Ty, DAG, + return getAddrLocal(N, SDLoc(N), Ty, DAG, Subtarget.isABI_N32() || Subtarget.isABI_N64()); } @@ -1754,12 +1754,12 @@ if (TLOF.IsConstantInSmallSection(N->getConstVal(), getTargetMachine())) // %gp_rel relocation - return getAddrGPRel(N, Ty, DAG); + return getAddrGPRel(N, SDLoc(N), Ty, DAG); - return getAddrNonPIC(N, Ty, DAG); + return getAddrNonPIC(N, SDLoc(N), Ty, DAG); } - return getAddrLocal(N, Ty, DAG, + return getAddrLocal(N, SDLoc(N), Ty, DAG, Subtarget.isABI_N32() || Subtarget.isABI_N64()); } @@ -2681,15 +2681,15 @@ InternalLinkage = Val->hasInternalLinkage(); if (InternalLinkage) - Callee = getAddrLocal(G, Ty, DAG, + Callee = getAddrLocal(G, DL, Ty, DAG, Subtarget.isABI_N32() || Subtarget.isABI_N64()); else if (LargeGOT) { - Callee = getAddrGlobalLargeGOT(G, Ty, DAG, MipsII::MO_CALL_HI16, + Callee = getAddrGlobalLargeGOT(G, DL, Ty, DAG, MipsII::MO_CALL_HI16, MipsII::MO_CALL_LO16, Chain, FuncInfo->callPtrInfo(Val)); IsCallReloc = true; } else { - Callee = getAddrGlobal(G, Ty, DAG, MipsII::MO_GOT_CALL, Chain, + Callee = getAddrGlobal(G, DL, Ty, DAG, MipsII::MO_GOT_CALL, Chain, FuncInfo->callPtrInfo(Val)); IsCallReloc = true; } @@ -2702,15 +2702,15 @@ const char *Sym = S->getSymbol(); if (!Subtarget.isABI_N64() && !IsPIC) // !N64 && static - Callee = DAG.getTargetExternalSymbol(Sym, getPointerTy(), - MipsII::MO_NO_FLAG); + Callee = + DAG.getTargetExternalSymbol(Sym, getPointerTy(), MipsII::MO_NO_FLAG); else if (LargeGOT) { - Callee = getAddrGlobalLargeGOT(S, Ty, DAG, MipsII::MO_CALL_HI16, + Callee = getAddrGlobalLargeGOT(S, DL, Ty, DAG, MipsII::MO_CALL_HI16, MipsII::MO_CALL_LO16, Chain, FuncInfo->callPtrInfo(Sym)); IsCallReloc = true; } else { // N64 || PIC - Callee = getAddrGlobal(S, Ty, DAG, MipsII::MO_GOT_CALL, Chain, + Callee = getAddrGlobal(S, DL, Ty, DAG, MipsII::MO_GOT_CALL, Chain, FuncInfo->callPtrInfo(Sym)); IsCallReloc = true; } Index: test/DebugInfo/Mips/fn-call-line.ll =================================================================== --- /dev/null +++ test/DebugInfo/Mips/fn-call-line.ll @@ -0,0 +1,82 @@ +; RUN: llc -mtriple=mips-linux-gnu -filetype=asm -asm-verbose=0 -O0 < %s | FileCheck %s +; RUN: llc -mtriple=mips-linux-gnu -filetype=obj -O0 < %s | llvm-dwarfdump -debug-dump=line - | FileCheck %s --check-prefix=INT + +; Mips used to generate 'jumpy' debug line info around calls. The address +; calculation for each call to f1() would share the same line info so it would +; emit output of the form: +; .loc $first_call_location +; .. address calculation .. +; .. function call .. +; .. address calculation .. +; .loc $second_call_location +; .. function call .. +; .loc $first_call_location +; .. address calculation .. +; .loc $third_call_location +; .. function call .. +; ... +; which would cause confusing stepping behaviour for the end user. +; +; This test checks that we emit more user friendly debug line info of the form: +; .loc $first_call_location +; .. address calculation .. +; .. function call .. +; .loc $second_call_location +; .. address calculation .. +; .. function call .. +; .loc $third_call_location +; .. address calculation .. +; .. function call .. +; ... +; +; Generated with clang from fn-call-line.c: +; void f1(); +; void f2() { +; f1(); +; f1(); +; } + +; CHECK: .loc 1 2 0{{$}} +; CHECK-NOT: .loc{{ }} +; CHECK: .loc 1 3 3 prologue_end{{$}} +; CHECK-NOT: .loc +; CHECK: .loc 1 4 3 + +; INT: {{^}}Address +; INT: ----- +; INT-NEXT: 2 0 1 0 0 is_stmt{{$}} +; INT-NEXT: 3 3 1 0 0 is_stmt prologue_end{{$}} +; INT-NEXT: 4 3 1 0 0 is_stmt{{$}} + + +; Function Attrs: nounwind uwtable +define void @f2() #0 { +entry: + call void (...)* @f1(), !dbg !11 + call void (...)* @f1(), !dbg !12 + ret void, !dbg !13 +} + +declare void @f1(...) #1 + +attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } +attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } + +!llvm.dbg.cu = !{!0} +!llvm.module.flags = !{!8, !9} +!llvm.ident = !{!10} + +!0 = !{!"0x11\0012\00clang version 3.7.0 (trunk 226641)\000\00\000\00\001", !1, !2, !2, !3, !2, !2} ; [ DW_TAG_compile_unit ] [/tmp/dbginfo/fn-call-line.c] [DW_LANG_C99] +!1 = !{!"fn-call-line.c", !"/tmp/dbginfo"} +!2 = !{} +!3 = !{!4} +!4 = !{!"0x2e\00f2\00f2\00\002\000\001\000\000\000\000\002", !1, !5, !6, null, void ()* @f2, null, null, !2} ; [ DW_TAG_subprogram ] [line 2] [def] [f2] +!5 = !{!"0x29", !1} ; [ DW_TAG_file_type ] [/tmp/dbginfo/fn-call-line.c] +!6 = !{!"0x15\00\000\000\000\000\000\000", null, null, null, !7, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] +!7 = !{null} +!8 = !{i32 2, !"Dwarf Version", i32 4} +!9 = !{i32 2, !"Debug Info Version", i32 2} +!10 = !{!"clang version 3.7.0 (trunk 226641)"} +!11 = !MDLocation(line: 3, column: 3, scope: !4) +!12 = !MDLocation(line: 4, column: 3, scope: !4) +!13 = !MDLocation(line: 5, column: 1, scope: !4)