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https://github.com/Gericom/teak-llvm.git
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d891ac9794
Summary: We have two copies of createPrivateGlobalForString (in asan and in esan). This change merges them into one. NFC Reviewers: vitalybuka Reviewed By: vitalybuka Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D53178 llvm-svn: 344314
99 lines
3.9 KiB
C++
99 lines
3.9 KiB
C++
//===-- Instrumentation.cpp - TransformUtils Infrastructure ---------------===//
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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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// This file defines the common initialization infrastructure for the
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// Instrumentation library.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Transforms/Instrumentation.h"
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#include "llvm-c/Initialization.h"
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#include "llvm/IR/IntrinsicInst.h"
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#include "llvm/IR/Module.h"
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#include "llvm/InitializePasses.h"
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#include "llvm/PassRegistry.h"
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using namespace llvm;
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/// Moves I before IP. Returns new insert point.
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static BasicBlock::iterator moveBeforeInsertPoint(BasicBlock::iterator I, BasicBlock::iterator IP) {
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// If I is IP, move the insert point down.
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if (I == IP)
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return ++IP;
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// Otherwise, move I before IP and return IP.
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I->moveBefore(&*IP);
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return IP;
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}
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/// Instrumentation passes often insert conditional checks into entry blocks.
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/// Call this function before splitting the entry block to move instructions
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/// that must remain in the entry block up before the split point. Static
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/// allocas and llvm.localescape calls, for example, must remain in the entry
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/// block.
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BasicBlock::iterator llvm::PrepareToSplitEntryBlock(BasicBlock &BB,
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BasicBlock::iterator IP) {
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assert(&BB.getParent()->getEntryBlock() == &BB);
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for (auto I = IP, E = BB.end(); I != E; ++I) {
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bool KeepInEntry = false;
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if (auto *AI = dyn_cast<AllocaInst>(I)) {
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if (AI->isStaticAlloca())
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KeepInEntry = true;
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} else if (auto *II = dyn_cast<IntrinsicInst>(I)) {
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if (II->getIntrinsicID() == llvm::Intrinsic::localescape)
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KeepInEntry = true;
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}
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if (KeepInEntry)
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IP = moveBeforeInsertPoint(I, IP);
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}
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return IP;
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}
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// Create a constant for Str so that we can pass it to the run-time lib.
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GlobalVariable *llvm::createPrivateGlobalForString(Module &M, StringRef Str,
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bool AllowMerging,
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const char *NamePrefix) {
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Constant *StrConst = ConstantDataArray::getString(M.getContext(), Str);
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// We use private linkage for module-local strings. If they can be merged
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// with another one, we set the unnamed_addr attribute.
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GlobalVariable *GV =
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new GlobalVariable(M, StrConst->getType(), true,
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GlobalValue::PrivateLinkage, StrConst, NamePrefix);
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if (AllowMerging)
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GV->setUnnamedAddr(GlobalValue::UnnamedAddr::Global);
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GV->setAlignment(1); // Strings may not be merged w/o setting align 1.
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return GV;
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}
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/// initializeInstrumentation - Initialize all passes in the TransformUtils
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/// library.
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void llvm::initializeInstrumentation(PassRegistry &Registry) {
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initializeAddressSanitizerLegacyPassPass(Registry);
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initializeAddressSanitizerModuleLegacyPassPass(Registry);
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initializeBoundsCheckingLegacyPassPass(Registry);
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initializeControlHeightReductionLegacyPassPass(Registry);
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initializeGCOVProfilerLegacyPassPass(Registry);
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initializePGOInstrumentationGenLegacyPassPass(Registry);
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initializePGOInstrumentationUseLegacyPassPass(Registry);
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initializePGOIndirectCallPromotionLegacyPassPass(Registry);
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initializePGOMemOPSizeOptLegacyPassPass(Registry);
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initializeInstrProfilingLegacyPassPass(Registry);
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initializeMemorySanitizerPass(Registry);
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initializeHWAddressSanitizerPass(Registry);
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initializeThreadSanitizerPass(Registry);
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initializeSanitizerCoverageModulePass(Registry);
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initializeDataFlowSanitizerPass(Registry);
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initializeEfficiencySanitizerPass(Registry);
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}
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/// LLVMInitializeInstrumentation - C binding for
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/// initializeInstrumentation.
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void LLVMInitializeInstrumentation(LLVMPassRegistryRef R) {
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initializeInstrumentation(*unwrap(R));
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}
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