commit 837a6f6f79fc44bf6467ac874f4e3c411a62bedf
author Justin Bogner <mail@justinbogner.com> Fri Apr 18 21:52:00 2014 +0000
committer Justin Bogner <mail@justinbogner.com> Fri Apr 18 21:52:00 2014 +0000
tree f6cd2dd6cdd0f5c5b34748f418ccafd2ff911133
parent fc83c1105c698c343a11e238ba6b93464fe8c5df

CodeGen: Use LLVM's InstrProfReader in -fprofile-instr-use=

Update clang to use the InstrProfReader from LLVM to read
instrumentation based profile data. This also switches us from the
naive text format to the binary format, since that's what's
implemented in the reader.

llvm-svn: 206658

clang/lib/CodeGen/CodeGenModule.cpp

diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp
index d4daaa5..69a9092 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -47,6 +47,7 @@
 #include "llvm/IR/Intrinsics.h"
 #include "llvm/IR/LLVMContext.h"
 #include "llvm/IR/Module.h"
+#include "llvm/ProfileData/InstrProfReader.h"
 #include "llvm/Support/ConvertUTF.h"
 #include "llvm/Support/ErrorHandling.h"
 
@@ -78,7 +79,7 @@
       ABI(createCXXABI(*this)), VMContext(M.getContext()), TBAA(0),
       TheTargetCodeGenInfo(0), Types(*this), VTables(*this), ObjCRuntime(0),
       OpenCLRuntime(0), CUDARuntime(0), DebugInfo(0), ARCData(0),
-      NoObjCARCExceptionsMetadata(0), RRData(0), PGOData(0),
+      NoObjCARCExceptionsMetadata(0), RRData(0), PGOReader(nullptr),
       CFConstantStringClassRef(0),
       ConstantStringClassRef(0), NSConstantStringType(0),
       NSConcreteGlobalBlock(0), NSConcreteStackBlock(0), BlockObjectAssign(0),
@@ -134,8 +135,14 @@
     ARCData = new ARCEntrypoints();
   RRData = new RREntrypoints();
 
-  if (!CodeGenOpts.InstrProfileInput.empty())
-    PGOData = new PGOProfileData(*this, CodeGenOpts.InstrProfileInput);
+  if (!CodeGenOpts.InstrProfileInput.empty()) {
+    if (llvm::error_code EC = llvm::IndexedInstrProfReader::create(
+            CodeGenOpts.InstrProfileInput, PGOReader)) {
+      unsigned DiagID = Diags.getCustomDiagID(DiagnosticsEngine::Error,
+                                              "Could not read profile: %0");
+      getDiags().Report(DiagID) << EC.message();
+    }
+  }
 }
 
 CodeGenModule::~CodeGenModule() {
@@ -286,7 +293,7 @@
   if (getCodeGenOpts().ProfileInstrGenerate)
     if (llvm::Function *PGOInit = CodeGenPGO::emitInitialization(*this))
       AddGlobalCtor(PGOInit, 0);
-  if (PGOData && PGOStats.isOutOfDate())
+  if (PGOReader && PGOStats.isOutOfDate())
     getDiags().Report(diag::warn_profile_data_out_of_date)
         << PGOStats.Visited << PGOStats.Missing << PGOStats.Mismatched;
   EmitCtorList(GlobalCtors, "llvm.global_ctors");