From: Emmett Neyman <eneyman@google.com>
Date: Thu, 9 Aug 2018 00:58:23 +0000 (+0000)
Subject: Added another optimization pass to make vectorizing possible
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=9ddb318f9c45f115b4e59c9a61e721c421953098;p=clang

Added another optimization pass to make vectorizing possible

Summary: I noticed that my code wasn't going deep into the loop vectorizer code so added another pass that makes it go further.

Reviewers: morehouse, kcc

Reviewed By: morehouse

Subscribers: cfe-commits, llvm-commits

Differential Revision: https://reviews.llvm.org/D50482

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@339305 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/tools/clang-fuzzer/handle-llvm/handle_llvm.cpp b/tools/clang-fuzzer/handle-llvm/handle_llvm.cpp
index ff775c1a76..86df06ab8b 100644
--- a/tools/clang-fuzzer/handle-llvm/handle_llvm.cpp
+++ b/tools/clang-fuzzer/handle-llvm/handle_llvm.cpp
@@ -100,17 +100,29 @@ static std::string OptLLVM(const std::string &IR, CodeGenOpt::Level OLvl) {
   if (!M || verifyModule(*M, &errs()))
     ErrorAndExit("Could not parse IR");
 
+  Triple ModuleTriple(M->getTargetTriple());
+  const TargetOptions Options = InitTargetOptionsFromCodeGenFlags();
+  std::string E;
+  const Target *TheTarget = TargetRegistry::lookupTarget(MArch, ModuleTriple, E);
+  TargetMachine *Machine =
+      TheTarget->createTargetMachine(M->getTargetTriple(), getCPUStr(),
+                                     getFeaturesStr(), Options, getRelocModel(),
+                                     getCodeModel(), OLvl);
+  std::unique_ptr<TargetMachine> TM(Machine);
   setFunctionAttributes(getCPUStr(), getFeaturesStr(), *M);
-  
+
   legacy::PassManager Passes;
-  Triple ModuleTriple(M->getTargetTriple());
   
   Passes.add(new TargetLibraryInfoWrapperPass(ModuleTriple));
-  Passes.add(createTargetTransformInfoWrapperPass(TargetIRAnalysis()));
+  Passes.add(createTargetTransformInfoWrapperPass(TM->getTargetIRAnalysis()));
+
+  LLVMTargetMachine &LTM = static_cast<LLVMTargetMachine &>(*TM);
+  Passes.add(LTM.createPassConfig(Passes));
+
   Passes.add(createVerifierPass());
 
   AddOptimizationPasses(Passes, OLvl, 0);
-  
+
   // Add a pass that writes the optimized IR to an output stream
   std::string outString;
   raw_string_ostream OS(outString);