Revert "[MS] Emit S_HEAPALLOCSITE debug info" because of ToTWin64(db)

buildbot failure.

This reverts commit d07d6d617713bececf57f3547434dd52f0f13f9e and
c774f687b6880484a126ed3e3d737e74c926f0ae.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@359034 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/MachineFunction.h

@@ -321,10 +321,6 @@ class MachineFunction {
   /// CodeView label annotations.
   std::vector<std::pair<MCSymbol *, MDNode *>> CodeViewAnnotations;
 
-  /// CodeView heapallocsites.
-  std::vector<std::tuple<MCSymbol*, MCSymbol*, DIType*>>
-      CodeViewHeapAllocSites;
-
   bool CallsEHReturn = false;
   bool CallsUnwindInit = false;
   bool HasEHScopes = false;
@@ -910,14 +906,6 @@ public:
     return CodeViewAnnotations;
   }
 
-  /// Record heapallocsites
-  void addCodeViewHeapAllocSite(MachineInstr *I, MDNode *MD);
-
-  ArrayRef<std::tuple<MCSymbol*, MCSymbol*, DIType*>>
-      getCodeViewHeapAllocSites() const {
-    return CodeViewHeapAllocSites;
-  }
-
   /// Return a reference to the C++ typeinfo for the current function.
   const std::vector<const GlobalValue *> &getTypeInfos() const {
     return TypeInfos;

lib/CodeGen/AsmPrinter/CodeViewDebug.cpp

@@ -1072,23 +1072,6 @@ void CodeViewDebug::emitDebugInfoForFunction(const Function *GV,
       endSymbolRecord(AnnotEnd);
     }
 
-    for (auto HeapAllocSite : FI.HeapAllocSites) {
-      MCSymbol *BeginLabel = std::get<0>(HeapAllocSite);
-      MCSymbol *EndLabel = std::get<1>(HeapAllocSite);
-      DIType *DITy = std::get<2>(HeapAllocSite);
-
-      MCSymbol *HeapAllocEnd = beginSymbolRecord(SymbolKind::S_HEAPALLOCSITE);
-      OS.AddComment("Call site offset");
-      OS.EmitCOFFSecRel32(BeginLabel, /*Offset=*/0);
-      OS.AddComment("Call site section index");
-      OS.EmitCOFFSectionIndex(BeginLabel);
-      OS.AddComment("Call instruction length");
-      OS.emitAbsoluteSymbolDiff(EndLabel, BeginLabel, 2);
-      OS.AddComment("Type index");
-      OS.EmitIntValue(getCompleteTypeIndex(DITy).getIndex(), 4);
-      endSymbolRecord(HeapAllocEnd);
-    }
-
     if (SP != nullptr)
       emitDebugInfoForUDTs(LocalUDTs);
 
@@ -2824,7 +2807,6 @@ void CodeViewDebug::endFunctionImpl(const MachineFunction *MF) {
   }
 
   CurFn->Annotations = MF->getCodeViewAnnotations();
-  CurFn->HeapAllocSites = MF->getCodeViewHeapAllocSites();
 
   CurFn->End = Asm->getFunctionEnd();
 

lib/CodeGen/AsmPrinter/CodeViewDebug.h

@@ -147,7 +147,6 @@ class LLVM_LIBRARY_VISIBILITY CodeViewDebug : public DebugHandlerBase {
     SmallVector<LexicalBlock *, 1> ChildBlocks;
 
     std::vector<std::pair<MCSymbol *, MDNode *>> Annotations;
-    std::vector<std::tuple<MCSymbol *, MCSymbol *, DIType *>> HeapAllocSites;
 
     const MCSymbol *Begin = nullptr;
     const MCSymbol *End = nullptr;

lib/CodeGen/MachineFunction.cpp

@@ -43,7 +43,6 @@
 #include "llvm/IR/BasicBlock.h"
 #include "llvm/IR/Constant.h"
 #include "llvm/IR/DataLayout.h"
-#include "llvm/IR/DebugInfoMetadata.h"
 #include "llvm/IR/DerivedTypes.h"
 #include "llvm/IR/Function.h"
 #include "llvm/IR/GlobalValue.h"
@@ -807,16 +806,6 @@ try_next:;
   return FilterID;
 }
 
-void MachineFunction::addCodeViewHeapAllocSite(MachineInstr *I, MDNode *MD) {
-  MCSymbol *BeginLabel = Ctx.createTempSymbol("heapallocsite", true);
-  MCSymbol *EndLabel = Ctx.createTempSymbol("heapallocsite", true);
-  I->setPreInstrSymbol(*this, BeginLabel);
-  I->setPostInstrSymbol(*this, EndLabel);
-
-  DIType *DI = dyn_cast<DIType>(MD);
-  CodeViewHeapAllocSites.push_back(std::make_tuple(BeginLabel, EndLabel, DI));
-}
-
 /// \}
 
 //===----------------------------------------------------------------------===//

lib/CodeGen/SelectionDAG/FastISel.cpp

@@ -1234,12 +1234,6 @@ bool FastISel::lowerCallTo(CallLoweringInfo &CLI) {
   if (CLI.NumResultRegs && CLI.CS)
     updateValueMap(CLI.CS->getInstruction(), CLI.ResultReg, CLI.NumResultRegs);
 
-  // Set labels for heapallocsite call.
-  if (CLI.CS && CLI.CS->getInstruction()->getMetadata("heapallocsite")) {
-    MDNode *MD = CLI.CS->getInstruction()->getMetadata("heapallocsite");
-    MF->addCodeViewHeapAllocSite(CLI.Call, MD);
-  }
-
   return true;
 }
 

test/CodeGen/X86/label-heapallocsite.ll

@@ -1,68 +0,0 @@
-; RUN: llc -O0 < %s | FileCheck %s
-; FIXME: Add test for llc with optimizations once it is implemented.
-
-; Source to regenerate:
-; $ clang --target=x86_64-windows-msvc -S heapallocsite.c  -g -gcodeview -o t.ll \
-;      -emit-llvm -O0 -Xclang -disable-llvm-passes -fms-extensions
-; __declspec(allocator) char *myalloc();
-; void g();
-; void foo() {
-;   g();
-;   myalloc()
-;   g();
-; }
-
-target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
-target triple = "x86_64-unknown-windows-msvc"
-
-; Function Attrs: noinline nounwind optnone
-define dso_local void @f() #0 !dbg !7 {
-entry:
-  call void @g(), !dbg !11
-  %call = call i8* @myalloc(), !dbg !12, !heapallocsite !13
-  call void @g(), !dbg !14
-  ret void, !dbg !15
-}
-
-; CHECK-LABEL: f: # @f
-; CHECK: callq g
-; CHECK: .Lheapallocsite0:
-; CHECK: callq myalloc
-; CHECK: .Lheapallocsite1:
-; CHECK: retq
-
-; CHECK-LABEL: .short  4423                    # Record kind: S_GPROC32_ID
-; CHECK:       .short  4446                    # Record kind: S_HEAPALLOCSITE
-; CHECK-NEXT:  .secrel32       .Lheapallocsite0
-; CHECK-NEXT:  .secidx .Lheapallocsite0
-; CHECK-NEXT:  .short  .Lheapallocsite1-.Lheapallocsite0
-; CHECK-NEXT:  .long 112
-; CHECK-NEXT:  .p2align 2
-
-; CHECK-LABEL: .short  4431                    # Record kind: S_PROC_ID_END
-
-declare dso_local void @g() #1
-
-declare dso_local i8* @myalloc() #1
-
-!llvm.dbg.cu = !{!0}
-!llvm.module.flags = !{!3, !4, !5}
-!llvm.ident = !{!6}
-
-!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 9.0.0 (https://github.com/llvm/llvm-project.git 4eff3de99423a62fd6e833e29c71c1e62ba6140b)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
-!1 = !DIFile(filename: "<stdin>", directory: "C:\5Csrc\5Ctest", checksumkind: CSK_MD5, checksum: "6d758cfa3834154a04ce8a55102772a9")
-!2 = !{}
-!3 = !{i32 2, !"CodeView", i32 1}
-!4 = !{i32 2, !"Debug Info Version", i32 3}
-!5 = !{i32 1, !"wchar_size", i32 2}
-!6 = !{!"clang version 9.0.0 (https://github.com/llvm/llvm-project.git 4eff3de99423a62fd6e833e29c71c1e62ba6140b)"}
-!7 = distinct !DISubprogram(name: "f", scope: !8, file: !8, line: 4, type: !9, scopeLine: 4, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
-!8 = !DIFile(filename: "heapallocsite.c", directory: "C:\5Csrc\5Ctest", checksumkind: CSK_MD5, checksum: "6d758cfa3834154a04ce8a55102772a9")
-!9 = !DISubroutineType(types: !10)
-!10 = !{null}
-!11 = !DILocation(line: 5, scope: !7)
-!12 = !DILocation(line: 6, scope: !7)
-!13 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char)
-!14 = !DILocation(line: 7, scope: !7)
-!15 = !DILocation(line: 8, scope: !7)
-