[llvm] [clang] [MemProf] Expand optimization scope to internal linakge function (PR #73236)

[via cfe-commits]

https://github.com/lifengxiang1025 updated 
https://github.com/llvm/llvm-project/pull/73236

>From fdce13021329985b7c3cb8748ee4f8f7f83a2730 Mon Sep 17 00:00:00 2001
From: lifengxiang <lifengxiang.1...@bytedance.com>
Date: Thu, 23 Nov 2023 20:32:25 +0800
Subject: [PATCH] [MemProf] Expand optimization scope to internal linakge
 function

---
 clang/lib/CodeGen/CGDeclCXX.cpp                  |  3 +++
 .../Transforms/Instrumentation/MemProfiler.cpp   | 16 +---------------
 2 files changed, 4 insertions(+), 15 deletions(-)

diff --git a/clang/lib/CodeGen/CGDeclCXX.cpp b/clang/lib/CodeGen/CGDeclCXX.cpp
index e08a1e5f42df20c..ae45c23c9e6811c 100644
--- a/clang/lib/CodeGen/CGDeclCXX.cpp
+++ b/clang/lib/CodeGen/CGDeclCXX.cpp
@@ -538,6 +538,9 @@ CodeGenModule::EmitCXXGlobalVarDeclInitFunc(const VarDecl 
*D,
   {
     llvm::raw_svector_ostream Out(FnName);
     getCXXABI().getMangleContext().mangleDynamicInitializer(D, Out);
+    if (getCodeGenOpts().UniqueInternalLinkageNames) {
+      Out << getModuleNameHash();
+    }
   }
 
   // Create a variable initialization function.
diff --git a/llvm/lib/Transforms/Instrumentation/MemProfiler.cpp 
b/llvm/lib/Transforms/Instrumentation/MemProfiler.cpp
index c6134ce77136364..97db0122be7c8e7 100644
--- a/llvm/lib/Transforms/Instrumentation/MemProfiler.cpp
+++ b/llvm/lib/Transforms/Instrumentation/MemProfiler.cpp
@@ -677,24 +677,10 @@ static void readMemprof(Module &M, Function &F,
                         const TargetLibraryInfo &TLI) {
   auto &Ctx = M.getContext();
 
-  auto FuncName = getIRPGOFuncName(F);
+  auto FuncName = F.getName();
   auto FuncGUID = Function::getGUID(FuncName);
   std::optional<memprof::MemProfRecord> MemProfRec;
   auto Err = MemProfReader->getMemProfRecord(FuncGUID).moveInto(MemProfRec);
-  if (Err) {
-    // If we don't find getIRPGOFuncName(), try getPGOFuncName() to handle
-    // profiles built by older compilers
-    Err = handleErrors(std::move(Err), [&](const InstrProfError &IE) -> Error {
-      if (IE.get() != instrprof_error::unknown_function)
-        return make_error<InstrProfError>(IE);
-      auto FuncName = getPGOFuncName(F);
-      auto FuncGUID = Function::getGUID(FuncName);
-      if (auto Err =
-              MemProfReader->getMemProfRecord(FuncGUID).moveInto(MemProfRec))
-        return Err;
-      return Error::success();
-    });
-  }
   if (Err) {
     handleAllErrors(std::move(Err), [&](const InstrProfError &IPE) {
       auto Err = IPE.get();

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