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

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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
This commit is contained in:
Justin Bogner
2014-04-18 21:52:00 +00:00
parent fc83c1105c
commit 837a6f6f79
7 changed files with 33 additions and 178 deletions
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15
clang/lib/CodeGen/CodeGenModule.cpp
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@@ -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 @@ CodeGenModule::CodeGenModule(ASTContext &C, const CodeGenOptions &CGO,
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 @@ CodeGenModule::CodeGenModule(ASTContext &C, const CodeGenOptions &CGO,
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 @@ void CodeGenModule::Release() {
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");