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eb66b33867
I did this a long time ago with a janky python script, but now clang-format has built-in support for this. I fed clang-format every line with a #include and let it re-sort things according to the precise LLVM rules for include ordering baked into clang-format these days. I've reverted a number of files where the results of sorting includes isn't healthy. Either places where we have legacy code relying on particular include ordering (where possible, I'll fix these separately) or where we have particular formatting around #include lines that I didn't want to disturb in this patch. This patch is *entirely* mechanical. If you get merge conflicts or anything, just ignore the changes in this patch and run clang-format over your #include lines in the files. Sorry for any noise here, but it is important to keep these things stable. I was seeing an increasing number of patches with irrelevant re-ordering of #include lines because clang-format was used. This patch at least isolates that churn, makes it easy to skip when resolving conflicts, and gets us to a clean baseline (again). llvm-svn: 304787
109 lines
4.0 KiB
C++
109 lines
4.0 KiB
C++
//===- SanitizerStats.cpp - Sanitizer statistics gathering ----------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Implements code generation for sanitizer statistics gathering.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Transforms/Utils/SanitizerStats.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/IR/Constants.h"
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#include "llvm/IR/DerivedTypes.h"
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#include "llvm/IR/GlobalVariable.h"
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#include "llvm/IR/IRBuilder.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Transforms/Utils/ModuleUtils.h"
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using namespace llvm;
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SanitizerStatReport::SanitizerStatReport(Module *M) : M(M) {
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StatTy = ArrayType::get(Type::getInt8PtrTy(M->getContext()), 2);
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EmptyModuleStatsTy = makeModuleStatsTy();
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ModuleStatsGV = new GlobalVariable(*M, EmptyModuleStatsTy, false,
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GlobalValue::InternalLinkage, nullptr);
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}
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ArrayType *SanitizerStatReport::makeModuleStatsArrayTy() {
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return ArrayType::get(StatTy, Inits.size());
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}
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StructType *SanitizerStatReport::makeModuleStatsTy() {
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return StructType::get(M->getContext(), {Type::getInt8PtrTy(M->getContext()),
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Type::getInt32Ty(M->getContext()),
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makeModuleStatsArrayTy()});
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}
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void SanitizerStatReport::create(IRBuilder<> &B, SanitizerStatKind SK) {
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Function *F = B.GetInsertBlock()->getParent();
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Module *M = F->getParent();
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PointerType *Int8PtrTy = B.getInt8PtrTy();
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IntegerType *IntPtrTy = B.getIntPtrTy(M->getDataLayout());
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ArrayType *StatTy = ArrayType::get(Int8PtrTy, 2);
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Inits.push_back(ConstantArray::get(
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StatTy,
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{Constant::getNullValue(Int8PtrTy),
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ConstantExpr::getIntToPtr(
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ConstantInt::get(IntPtrTy, uint64_t(SK) << (IntPtrTy->getBitWidth() -
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kSanitizerStatKindBits)),
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Int8PtrTy)}));
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FunctionType *StatReportTy =
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FunctionType::get(B.getVoidTy(), Int8PtrTy, false);
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Constant *StatReport = M->getOrInsertFunction(
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"__sanitizer_stat_report", StatReportTy);
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auto InitAddr = ConstantExpr::getGetElementPtr(
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EmptyModuleStatsTy, ModuleStatsGV,
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ArrayRef<Constant *>{
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ConstantInt::get(IntPtrTy, 0), ConstantInt::get(B.getInt32Ty(), 2),
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ConstantInt::get(IntPtrTy, Inits.size() - 1),
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});
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B.CreateCall(StatReport, ConstantExpr::getBitCast(InitAddr, Int8PtrTy));
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}
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void SanitizerStatReport::finish() {
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if (Inits.empty()) {
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ModuleStatsGV->eraseFromParent();
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return;
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}
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PointerType *Int8PtrTy = Type::getInt8PtrTy(M->getContext());
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IntegerType *Int32Ty = Type::getInt32Ty(M->getContext());
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Type *VoidTy = Type::getVoidTy(M->getContext());
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// Create a new ModuleStatsGV to replace the old one. We can't just set the
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// old one's initializer because its type is different.
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auto NewModuleStatsGV = new GlobalVariable(
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*M, makeModuleStatsTy(), false, GlobalValue::InternalLinkage,
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ConstantStruct::getAnon(
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{Constant::getNullValue(Int8PtrTy),
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ConstantInt::get(Int32Ty, Inits.size()),
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ConstantArray::get(makeModuleStatsArrayTy(), Inits)}));
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ModuleStatsGV->replaceAllUsesWith(
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ConstantExpr::getBitCast(NewModuleStatsGV, ModuleStatsGV->getType()));
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ModuleStatsGV->eraseFromParent();
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// Create a global constructor to register NewModuleStatsGV.
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auto F = Function::Create(FunctionType::get(VoidTy, false),
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GlobalValue::InternalLinkage, "", M);
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auto BB = BasicBlock::Create(M->getContext(), "", F);
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IRBuilder<> B(BB);
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FunctionType *StatInitTy = FunctionType::get(VoidTy, Int8PtrTy, false);
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Constant *StatInit = M->getOrInsertFunction(
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"__sanitizer_stat_init", StatInitTy);
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B.CreateCall(StatInit, ConstantExpr::getBitCast(NewModuleStatsGV, Int8PtrTy));
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B.CreateRetVoid();
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appendToGlobalCtors(*M, F, 0);
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}
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