mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-20 19:42:54 +02:00
729f819c81
Summary: This PR creates a utility class called ValueProfileCollector that tells PGOInstrumentationGen and PGOInstrumentationUse what to value-profile and where to attach the profile metadata. It then refactors logic scattered in PGOInstrumentation.cpp into two plugins that plug into the ValueProfileCollector. Authored By: Wael Yehia <wyehia@ca.ibm.com> Reviewer: davidxl, tejohnson, xur Reviewed By: davidxl, tejohnson, xur Subscribers: llvm-commits Tag: #llvm Differential Revision: https://reviews.llvm.org/D67920 Patch By Wael Yehia <wyehia@ca.ibm.com> llvm-svn: 373601
76 lines
2.6 KiB
C++
76 lines
2.6 KiB
C++
//=== ValueProfilePlugins.inc - set of plugins used by ValueProfileCollector =//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains a set of plugin classes used in ValueProfileCollectorImpl.
|
|
// Each plugin is responsible for collecting Value Profiling candidates for a
|
|
// particular optimization.
|
|
// Each plugin must satisfy the interface described in ValueProfileCollector.cpp
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "ValueProfileCollector.h"
|
|
#include "llvm/Analysis/IndirectCallVisitor.h"
|
|
#include "llvm/IR/InstVisitor.h"
|
|
|
|
using namespace llvm;
|
|
using CandidateInfo = ValueProfileCollector::CandidateInfo;
|
|
|
|
///--------------------------- MemIntrinsicPlugin ------------------------------
|
|
class MemIntrinsicPlugin : public InstVisitor<MemIntrinsicPlugin> {
|
|
Function &F;
|
|
std::vector<CandidateInfo> *Candidates;
|
|
|
|
public:
|
|
static constexpr InstrProfValueKind Kind = IPVK_MemOPSize;
|
|
|
|
MemIntrinsicPlugin(Function &Fn) : F(Fn), Candidates(nullptr) {}
|
|
|
|
void run(std::vector<CandidateInfo> &Cs) {
|
|
Candidates = &Cs;
|
|
visit(F);
|
|
Candidates = nullptr;
|
|
}
|
|
void visitMemIntrinsic(MemIntrinsic &MI) {
|
|
Value *Length = MI.getLength();
|
|
// Not instrument constant length calls.
|
|
if (dyn_cast<ConstantInt>(Length))
|
|
return;
|
|
|
|
Instruction *InsertPt = &MI;
|
|
Instruction *AnnotatedInst = &MI;
|
|
Candidates->emplace_back(CandidateInfo{Length, InsertPt, AnnotatedInst});
|
|
}
|
|
};
|
|
|
|
///------------------------ IndirectCallPromotionPlugin ------------------------
|
|
class IndirectCallPromotionPlugin {
|
|
Function &F;
|
|
|
|
public:
|
|
static constexpr InstrProfValueKind Kind = IPVK_IndirectCallTarget;
|
|
|
|
IndirectCallPromotionPlugin(Function &Fn) : F(Fn) {}
|
|
|
|
void run(std::vector<CandidateInfo> &Candidates) {
|
|
std::vector<Instruction *> Result = findIndirectCalls(F);
|
|
for (Instruction *I : Result) {
|
|
Value *Callee = CallSite(I).getCalledValue();
|
|
Instruction *InsertPt = I;
|
|
Instruction *AnnotatedInst = I;
|
|
Candidates.emplace_back(CandidateInfo{Callee, InsertPt, AnnotatedInst});
|
|
}
|
|
}
|
|
};
|
|
|
|
///----------------------- Registration of the plugins -------------------------
|
|
/// For now, registering a plugin with the ValueProfileCollector is done by
|
|
/// adding the plugin type to the VP_PLUGIN_LIST macro.
|
|
#define VP_PLUGIN_LIST \
|
|
MemIntrinsicPlugin, \
|
|
IndirectCallPromotionPlugin
|