From 256c2e14c7fc675da56adf0b4a95a61ac3c622aa Mon Sep 17 00:00:00 2001 From: Derek Bruening Date: Thu, 21 Apr 2016 21:32:04 +0000 Subject: [esan] EfficiencySanitizer driver flags Summary: Adds a framework to enable the instrumentation pass for the new EfficiencySanitizer ("esan") family of tools. Adds a flag for esan's cache fragmentation tool via -fsanitize=efficiency-cache-frag. Adds appropriate tests for the new flag. Reviewers: eugenis, vitalybuka, aizatsky, filcab Subscribers: filcab, kubabrecka, llvm-commits, zhaoqin, kcc Differential Revision: http://reviews.llvm.org/D19169 llvm-svn: 267059 --- clang/lib/CodeGen/BackendUtil.cpp | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) (limited to 'clang/lib/CodeGen/BackendUtil.cpp') diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp index f09182f565d..148c0a09f9e 100644 --- a/clang/lib/CodeGen/BackendUtil.cpp +++ b/clang/lib/CodeGen/BackendUtil.cpp @@ -248,6 +248,17 @@ static void addDataFlowSanitizerPass(const PassManagerBuilder &Builder, PM.add(createDataFlowSanitizerPass(LangOpts.SanitizerBlacklistFiles)); } +static void addEfficiencySanitizerPass(const PassManagerBuilder &Builder, + legacy::PassManagerBase &PM) { + const PassManagerBuilderWrapper &BuilderWrapper = + static_cast(Builder); + const LangOptions &LangOpts = BuilderWrapper.getLangOpts(); + EfficiencySanitizerOptions Opts; + if (LangOpts.Sanitize.has(SanitizerKind::EfficiencyCacheFrag)) + Opts.ToolType = EfficiencySanitizerOptions::ESAN_CacheFrag; + PM.add(createEfficiencySanitizerPass(Opts)); +} + static TargetLibraryInfoImpl *createTLII(llvm::Triple &TargetTriple, const CodeGenOptions &CodeGenOpts) { TargetLibraryInfoImpl *TLII = new TargetLibraryInfoImpl(TargetTriple); @@ -407,6 +418,13 @@ void EmitAssemblyHelper::CreatePasses(ModuleSummaryIndex *ModuleSummary) { addDataFlowSanitizerPass); } + if (LangOpts.Sanitize.hasOneOf(SanitizerKind::Efficiency)) { + PMBuilder.addExtension(PassManagerBuilder::EP_OptimizerLast, + addEfficiencySanitizerPass); + PMBuilder.addExtension(PassManagerBuilder::EP_EnabledOnOptLevel0, + addEfficiencySanitizerPass); + } + // Set up the per-function pass manager. legacy::FunctionPassManager *FPM = getPerFunctionPasses(); if (CodeGenOpts.VerifyModule) -- cgit v1.2.3