Redirect DataLayout from TargetMachine to Module in SjLjEHPrepare

Summary:
This change is part of a series of commits dedicated to have a single
DataLayout during compilation by using always the one owned by the
module.

Reviewers: echristo

Subscribers: yaron.keren, rafael, llvm-commits

Differential Revision: http://reviews.llvm.org/D11009

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 241654

llvm/include/llvm/CodeGen/Passes.h

@@ -605,7 +605,7 @@ namespace llvm {
   /// createSjLjEHPreparePass - This pass adapts exception handling code to use
   /// the GCC-style builtin setjmp/longjmp (sjlj) to handling EH control flow.
   ///
-  FunctionPass *createSjLjEHPreparePass(const TargetMachine *TM);
+  FunctionPass *createSjLjEHPreparePass();
 
   /// LocalStackSlotAllocation - This pass assigns local frame indices to stack
   /// slots relative to one another and allocates base registers to access them

llvm/lib/CodeGen/Passes.cpp

@@ -424,7 +424,7 @@ void TargetPassConfig::addPassesToHandleExceptions() {
     // removed from the parent invoke(s). This could happen when a landing
     // pad is shared by multiple invokes and is also a target of a normal
     // edge from elsewhere.
-    addPass(createSjLjEHPreparePass(TM));
+    addPass(createSjLjEHPreparePass());
     // FALLTHROUGH
   case ExceptionHandling::DwarfCFI:
   case ExceptionHandling::ARM:

llvm/lib/CodeGen/SjLjEHPrepare.cpp

@@ -45,7 +45,6 @@ STATISTIC(NumSpilled, "Number of registers live across unwind edges");
 
 namespace {
 class SjLjEHPrepare : public FunctionPass {
-  const TargetMachine *TM;
   Type *doubleUnderDataTy;
   Type *doubleUnderJBufTy;
   Type *FunctionContextTy;
@@ -63,7 +62,7 @@ class SjLjEHPrepare : public FunctionPass {
 
 public:
   static char ID; // Pass identification, replacement for typeid
-  explicit SjLjEHPrepare(const TargetMachine *TM) : FunctionPass(ID), TM(TM) {}
+  explicit SjLjEHPrepare() : FunctionPass(ID) {}
   bool doInitialization(Module &M) override;
   bool runOnFunction(Function &F) override;
 
@@ -85,9 +84,7 @@ class SjLjEHPrepare : public FunctionPass {
 char SjLjEHPrepare::ID = 0;
 
 // Public Interface To the SjLjEHPrepare pass.
-FunctionPass *llvm::createSjLjEHPreparePass(const TargetMachine *TM) {
-  return new SjLjEHPrepare(TM);
-}
+FunctionPass *llvm::createSjLjEHPreparePass() { return new SjLjEHPrepare(); }
 // doInitialization - Set up decalarations and types needed to process
 // exceptions.
 bool SjLjEHPrepare::doInitialization(Module &M) {
@@ -196,9 +193,8 @@ Value *SjLjEHPrepare::setupFunctionContext(Function &F,
   // Create an alloca for the incoming jump buffer ptr and the new jump buffer
   // that needs to be restored on all exits from the function. This is an alloca
   // because the value needs to be added to the global context list.
-  const TargetLowering *TLI = TM->getSubtargetImpl(F)->getTargetLowering();
-  unsigned Align =
-      TLI->getDataLayout()->getPrefTypeAlignment(FunctionContextTy);
+  auto &DL = F.getParent()->getDataLayout();
+  unsigned Align = DL.getPrefTypeAlignment(FunctionContextTy);
   FuncCtx = new AllocaInst(FunctionContextTy, nullptr, Align, "fn_context",
                            EntryBB->begin());