From fc2beaa1362ab880b8f4353ccbc6b9603dd24215 Mon Sep 17 00:00:00 2001
From: Eric Christopher <echristo@gmail.com>
Date: Mon, 15 Apr 2013 07:07:21 +0000
Subject: [PATCH] Recommit r179497 after fixing uninitialized variable.

llvm-svn: 179512
---
 .../Transforms/SLPVectorizer/X86/reduction.ll |  3 --
 .../SLPVectorizer/X86/reduction2.ll           |  3 --
 llvm/tools/opt/opt.cpp                        | 30 ++++++++++---------
 3 files changed, 16 insertions(+), 20 deletions(-)

diff --git a/llvm/test/Transforms/SLPVectorizer/X86/reduction.ll b/llvm/test/Transforms/SLPVectorizer/X86/reduction.ll
index 70b7c3a0b998..da65f92a92ff 100644
--- a/llvm/test/Transforms/SLPVectorizer/X86/reduction.ll
+++ b/llvm/test/Transforms/SLPVectorizer/X86/reduction.ll
@@ -1,8 +1,5 @@
 ; RUN: opt < %s -basicaa -slp-vectorizer -dce -S -mtriple=i386-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s
 
-target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32-S128"
-target triple = "i386-apple-macosx10.8.0"
-
 ; int foo(double *A, int n, int m) {
 ;   double sum = 0, v1 = 2, v0 = 3;
 ;   for (int i=0; i < n; ++i)
diff --git a/llvm/test/Transforms/SLPVectorizer/X86/reduction2.ll b/llvm/test/Transforms/SLPVectorizer/X86/reduction2.ll
index 7aa7d7e243d0..9cce0be6e3d6 100644
--- a/llvm/test/Transforms/SLPVectorizer/X86/reduction2.ll
+++ b/llvm/test/Transforms/SLPVectorizer/X86/reduction2.ll
@@ -1,8 +1,5 @@
 ; RUN: opt < %s -basicaa -slp-vectorizer -dce -S -mtriple=i386-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s
 
-target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32-S128"
-target triple = "i386-apple-macosx10.8.0"
-
 ;CHECK: @foo
 ;CHECK: load <2 x double>
 ;CHECK: ret
diff --git a/llvm/tools/opt/opt.cpp b/llvm/tools/opt/opt.cpp
index e385d7f57716..de8bd41d11c4 100644
--- a/llvm/tools/opt/opt.cpp
+++ b/llvm/tools/opt/opt.cpp
@@ -403,7 +403,7 @@ struct BreakpointPrinter : public ModulePass {
     AU.setPreservesAll();
   }
 };
- 
+
 } // anonymous namespace
 
 char BreakpointPrinter::ID = 0;
@@ -446,7 +446,7 @@ static void AddOptimizationPasses(PassManagerBase &MPM,FunctionPassManager &FPM,
   Builder.DisableUnitAtATime = !UnitAtATime;
   Builder.DisableUnrollLoops = OptLevel == 0;
   Builder.DisableSimplifyLibCalls = DisableSimplifyLibCalls;
-  
+
   Builder.populateFunctionPassManager(FPM);
   Builder.populateModulePassManager(MPM);
 }
@@ -529,9 +529,8 @@ static TargetMachine* GetTargetMachine(Triple TheTriple) {
   const Target *TheTarget = TargetRegistry::lookupTarget(MArch, TheTriple,
                                                          Error);
   // Some modules don't specify a triple, and this is okay.
-  if (!TheTarget) {
+  if (!TheTarget)
     return 0;
-  }
 
   // Package up features to be passed to target/subtarget
   std::string FeaturesStr;
@@ -598,8 +597,11 @@ int main(int argc, char **argv) {
   }
 
   // If we are supposed to override the target triple, do so now.
-  if (!TargetTriple.empty())
+  const DataLayout *TD = 0;
+  if (!TargetTriple.empty()) {
     M->setTargetTriple(Triple::normalize(TargetTriple));
+    TD = GetTargetMachine(Triple(TargetTriple))->getDataLayout();
+  }
 
   // Figure out what stream we are supposed to write to...
   OwningPtr<tool_output_file> Out;
@@ -641,16 +643,16 @@ int main(int argc, char **argv) {
     TLI->disableAllFunctions();
   Passes.add(TLI);
 
-  // Add an appropriate DataLayout instance for this module.
-  DataLayout *TD = 0;
-  const std::string &ModuleDataLayout = M.get()->getDataLayout();
-  if (!ModuleDataLayout.empty())
-    TD = new DataLayout(ModuleDataLayout);
-  else if (!DefaultDataLayout.empty())
-    TD = new DataLayout(DefaultDataLayout);
-
+  // If we don't have a data layout by now go ahead and set it if we can.
+  if (!TD) {
+    const std::string &ModuleDataLayout = M.get()->getDataLayout();
+    if (!ModuleDataLayout.empty())
+      TD = new DataLayout(ModuleDataLayout);
+    else if (!DefaultDataLayout.empty())
+      TD = new DataLayout(DefaultDataLayout);
+  }
   if (TD)
-    Passes.add(TD);
+    Passes.add(new DataLayout(*TD));
 
   Triple ModuleTriple(M->getTargetTriple());
   TargetMachine *Machine = 0;