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Move the personality function from LandingPadInst to Function

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The personality routine currently lives in the LandingPadInst.

This isn't desirable because:
- All LandingPadInsts in the same function must have the same
  personality routine.  This means that each LandingPadInst beyond the
  first has an operand which produces no additional information.

- There is ongoing work to introduce EH IR constructs other than
  LandingPadInst.  Moving the personality routine off of any one
  particular Instruction and onto the parent function seems a lot better
  than have N different places a personality function can sneak onto an
  exceptional function.

Differential Revision: http://reviews.llvm.org/D10429

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239940 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
David Majnemer
2015-06-17 20:52:32 +00:00
parent 4412d4b51f
commit cc714e2142
313 changed files with 1350 additions and 1258 deletions
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7
lib/Transforms/Utils/Local.cpp
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@ -1173,10 +1173,11 @@ static void changeToCall(InvokeInst *II) {
II->eraseFromParent();
}
static bool markAliveBlocks(BasicBlock *BB,
static bool markAliveBlocks(Function &F,
SmallPtrSetImpl<BasicBlock*> &Reachable) {
SmallVector<BasicBlock*, 128> Worklist;
BasicBlock *BB = F.begin();
Worklist.push_back(BB);
Reachable.insert(BB);
bool Changed = false;
@ -1247,7 +1248,7 @@ static bool markAliveBlocks(BasicBlock *BB,
if (isa<ConstantPointerNull>(Callee) || isa<UndefValue>(Callee)) {
changeToUnreachable(II, true);
Changed = true;
} else if (II->doesNotThrow() && canSimplifyInvokeNoUnwind(II)) {
} else if (II->doesNotThrow() && canSimplifyInvokeNoUnwind(&F)) {
if (II->use_empty() && II->onlyReadsMemory()) {
// jump to the normal destination branch.
BranchInst::Create(II->getNormalDest(), II);
@ -1272,7 +1273,7 @@ static bool markAliveBlocks(BasicBlock *BB,
/// otherwise.
bool llvm::removeUnreachableBlocks(Function &F) {
SmallPtrSet<BasicBlock*, 128> Reachable;
bool Changed = markAliveBlocks(F.begin(), Reachable);
bool Changed = markAliveBlocks(F, Reachable);
// If there are unreachable blocks in the CFG...
if (Reachable.size() == F.size())