05da2fe521
This file lists every pass in LLVM, and is included by Pass.h, which is very popular. Every time we add, remove, or rename a pass in LLVM, it caused lots of recompilation. I found this fact by looking at this table, which is sorted by the number of times a file was changed over the last 100,000 git commits multiplied by the number of object files that depend on it in the current checkout: recompiles touches affected_files header 342380 95 3604 llvm/include/llvm/ADT/STLExtras.h 314730 234 1345 llvm/include/llvm/InitializePasses.h 307036 118 2602 llvm/include/llvm/ADT/APInt.h 213049 59 3611 llvm/include/llvm/Support/MathExtras.h 170422 47 3626 llvm/include/llvm/Support/Compiler.h 162225 45 3605 llvm/include/llvm/ADT/Optional.h 158319 63 2513 llvm/include/llvm/ADT/Triple.h 140322 39 3598 llvm/include/llvm/ADT/StringRef.h 137647 59 2333 llvm/include/llvm/Support/Error.h 131619 73 1803 llvm/include/llvm/Support/FileSystem.h Before this change, touching InitializePasses.h would cause 1345 files to recompile. After this change, touching it only causes 550 compiles in an incremental rebuild. Reviewers: bkramer, asbirlea, bollu, jdoerfert Differential Revision: https://reviews.llvm.org/D70211
126 lines
4.2 KiB
C++
126 lines
4.2 KiB
C++
//===- InlineSimple.cpp - Code to perform simple function inlining --------===//
|
|
//
|
|
// 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 implements bottom-up inlining of functions into callees.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Analysis/AssumptionCache.h"
|
|
#include "llvm/Analysis/InlineCost.h"
|
|
#include "llvm/Analysis/ProfileSummaryInfo.h"
|
|
#include "llvm/Analysis/TargetLibraryInfo.h"
|
|
#include "llvm/Analysis/TargetTransformInfo.h"
|
|
#include "llvm/IR/CallSite.h"
|
|
#include "llvm/IR/CallingConv.h"
|
|
#include "llvm/IR/DataLayout.h"
|
|
#include "llvm/IR/Instructions.h"
|
|
#include "llvm/IR/Module.h"
|
|
#include "llvm/IR/Type.h"
|
|
#include "llvm/InitializePasses.h"
|
|
#include "llvm/Transforms/IPO.h"
|
|
#include "llvm/Transforms/IPO/Inliner.h"
|
|
|
|
using namespace llvm;
|
|
|
|
#define DEBUG_TYPE "inline"
|
|
|
|
namespace {
|
|
|
|
/// Actual inliner pass implementation.
|
|
///
|
|
/// The common implementation of the inlining logic is shared between this
|
|
/// inliner pass and the always inliner pass. The two passes use different cost
|
|
/// analyses to determine when to inline.
|
|
class SimpleInliner : public LegacyInlinerBase {
|
|
|
|
InlineParams Params;
|
|
|
|
public:
|
|
SimpleInliner() : LegacyInlinerBase(ID), Params(llvm::getInlineParams()) {
|
|
initializeSimpleInlinerPass(*PassRegistry::getPassRegistry());
|
|
}
|
|
|
|
explicit SimpleInliner(InlineParams Params)
|
|
: LegacyInlinerBase(ID), Params(std::move(Params)) {
|
|
initializeSimpleInlinerPass(*PassRegistry::getPassRegistry());
|
|
}
|
|
|
|
static char ID; // Pass identification, replacement for typeid
|
|
|
|
InlineCost getInlineCost(CallSite CS) override {
|
|
Function *Callee = CS.getCalledFunction();
|
|
TargetTransformInfo &TTI = TTIWP->getTTI(*Callee);
|
|
|
|
bool RemarksEnabled = false;
|
|
const auto &BBs = CS.getCaller()->getBasicBlockList();
|
|
if (!BBs.empty()) {
|
|
auto DI = OptimizationRemark(DEBUG_TYPE, "", DebugLoc(), &BBs.front());
|
|
if (DI.isEnabled())
|
|
RemarksEnabled = true;
|
|
}
|
|
OptimizationRemarkEmitter ORE(CS.getCaller());
|
|
|
|
std::function<AssumptionCache &(Function &)> GetAssumptionCache =
|
|
[&](Function &F) -> AssumptionCache & {
|
|
return ACT->getAssumptionCache(F);
|
|
};
|
|
return llvm::getInlineCost(
|
|
cast<CallBase>(*CS.getInstruction()), Params, TTI, GetAssumptionCache,
|
|
/*GetBFI=*/None, PSI, RemarksEnabled ? &ORE : nullptr);
|
|
}
|
|
|
|
bool runOnSCC(CallGraphSCC &SCC) override;
|
|
void getAnalysisUsage(AnalysisUsage &AU) const override;
|
|
|
|
private:
|
|
TargetTransformInfoWrapperPass *TTIWP;
|
|
|
|
};
|
|
|
|
} // end anonymous namespace
|
|
|
|
char SimpleInliner::ID = 0;
|
|
INITIALIZE_PASS_BEGIN(SimpleInliner, "inline", "Function Integration/Inlining",
|
|
false, false)
|
|
INITIALIZE_PASS_DEPENDENCY(AssumptionCacheTracker)
|
|
INITIALIZE_PASS_DEPENDENCY(CallGraphWrapperPass)
|
|
INITIALIZE_PASS_DEPENDENCY(ProfileSummaryInfoWrapperPass)
|
|
INITIALIZE_PASS_DEPENDENCY(TargetTransformInfoWrapperPass)
|
|
INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfoWrapperPass)
|
|
INITIALIZE_PASS_END(SimpleInliner, "inline", "Function Integration/Inlining",
|
|
false, false)
|
|
|
|
Pass *llvm::createFunctionInliningPass() { return new SimpleInliner(); }
|
|
|
|
Pass *llvm::createFunctionInliningPass(int Threshold) {
|
|
return new SimpleInliner(llvm::getInlineParams(Threshold));
|
|
}
|
|
|
|
Pass *llvm::createFunctionInliningPass(unsigned OptLevel,
|
|
unsigned SizeOptLevel,
|
|
bool DisableInlineHotCallSite) {
|
|
auto Param = llvm::getInlineParams(OptLevel, SizeOptLevel);
|
|
if (DisableInlineHotCallSite)
|
|
Param.HotCallSiteThreshold = 0;
|
|
return new SimpleInliner(Param);
|
|
}
|
|
|
|
Pass *llvm::createFunctionInliningPass(InlineParams &Params) {
|
|
return new SimpleInliner(Params);
|
|
}
|
|
|
|
bool SimpleInliner::runOnSCC(CallGraphSCC &SCC) {
|
|
TTIWP = &getAnalysis<TargetTransformInfoWrapperPass>();
|
|
return LegacyInlinerBase::runOnSCC(SCC);
|
|
}
|
|
|
|
void SimpleInliner::getAnalysisUsage(AnalysisUsage &AU) const {
|
|
AU.addRequired<TargetTransformInfoWrapperPass>();
|
|
LegacyInlinerBase::getAnalysisUsage(AU);
|
|
}
|