Revert "Reland [CodeGen] emit CG profile for COFF object file"

This reverts commit 506b6170cb513f1cb6e93a3b690c758f9ded18ac.

This still causes link errors, see https://crbug.com/1130780.

1 files changed, 0 insertions, 48 deletions

diff --git a/llvm/lib/Target/TargetLoweringObjectFile.cpp b/llvm/lib/Target/TargetLoweringObjectFile.cpp
index 7128c35..eea0aee 100644
--- a/llvm/lib/Target/TargetLoweringObjectFile.cpp
+++ b/llvm/lib/Target/TargetLoweringObjectFile.cpp
@@ -49,8 +49,6 @@ void TargetLoweringObjectFile::Initialize(MCContext &ctx,
   // Reset various EH DWARF encodings.
   PersonalityEncoding = LSDAEncoding = TTypeEncoding = dwarf::DW_EH_PE_absptr;
   CallSiteEncoding = dwarf::DW_EH_PE_uleb128;
-
-  this->TM = &TM;
 }
 
 TargetLoweringObjectFile::~TargetLoweringObjectFile() {
@@ -138,52 +136,6 @@ void TargetLoweringObjectFile::emitPersonalityValue(MCStreamer &Streamer,
                                                     const MCSymbol *Sym) const {
 }
 
-void TargetLoweringObjectFile::emitCGProfile(MCStreamer &Streamer,
-                                             Module &M) const {
-  MCContext &C = getContext();
-  SmallVector<Module::ModuleFlagEntry, 8> ModuleFlags;
-  M.getModuleFlagsMetadata(ModuleFlags);
-
-  MDNode *CFGProfile = nullptr;
-
-  for (const auto &MFE : ModuleFlags) {
-    StringRef Key = MFE.Key->getString();
-    if (Key == "CG Profile") {
-      CFGProfile = cast<MDNode>(MFE.Val);
-      break;
-    }
-  }
-
-  if (!CFGProfile)
-    return;
-
-  auto GetSym = [this](const MDOperand &MDO) -> MCSymbol * {
-    if (!MDO)
-      return nullptr;
-    auto *V = cast<ValueAsMetadata>(MDO);
-    const Function *F = cast<Function>(V->getValue());
-    if (F->hasDLLImportStorageClass())
-      return nullptr;
-    return TM->getSymbol(F);
-  };
-
-  for (const auto &Edge : CFGProfile->operands()) {
-    MDNode *E = cast<MDNode>(Edge);
-    const MCSymbol *From = GetSym(E->getOperand(0));
-    const MCSymbol *To = GetSym(E->getOperand(1));
-    // Skip null functions. This can happen if functions are dead stripped after
-    // the CGProfile pass has been run.
-    if (!From || !To)
-      continue;
-    uint64_t Count = cast<ConstantAsMetadata>(E->getOperand(2))
-                         ->getValue()
-                         ->getUniqueInteger()
-                         .getZExtValue();
-    Streamer.emitCGProfileEntry(
-        MCSymbolRefExpr::create(From, MCSymbolRefExpr::VK_None, C),
-        MCSymbolRefExpr::create(To, MCSymbolRefExpr::VK_None, C), Count);
-  }
-}
 
 /// getKindForGlobal - This is a top-level target-independent classifier for
 /// a global object.  Given a global variable and information from the TM, this