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Add support for the unreachable instruction

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17039 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-10-16 18:06:43 +00:00
parent 7eb8a52332
commit c8717b1624
2 changed files with 5 additions and 3 deletions
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1
include/llvm/Support/InstVisitor.h
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@ -156,6 +156,7 @@ struct InstVisitor {
RetTy visitSwitchInst(SwitchInst &I) { DELEGATE(TerminatorInst);}
RetTy visitInvokeInst(InvokeInst &I) { DELEGATE(TerminatorInst);}
RetTy visitUnwindInst(UnwindInst &I) { DELEGATE(TerminatorInst);}
RetTy visitUnreachableInst(UnreachableInst &I) { DELEGATE(TerminatorInst);}
RetTy visitSetCondInst(SetCondInst &I) { DELEGATE(BinaryOperator);}
RetTy visitMallocInst(MallocInst &I) { DELEGATE(AllocationInst);}
RetTy visitAllocaInst(AllocaInst &I) { DELEGATE(AllocationInst);}

7
include/llvm/Transforms/Utils/UnifyFunctionExitNodes.h
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@ -23,18 +23,19 @@
namespace llvm {
struct UnifyFunctionExitNodes : public FunctionPass {
BasicBlock *ReturnBlock, *UnwindBlock;
BasicBlock *ReturnBlock, *UnwindBlock, *UnreachableBlock;
public:
UnifyFunctionExitNodes() : ReturnBlock(0), UnwindBlock(0) {}
// We can preserve non-critical-edgeness when we unify function exit nodes
virtual void getAnalysisUsage(AnalysisUsage &AU) const;
// getReturn|UnwindBlock - Return the new single (or nonexistant) return or
// unwind basic blocks in the CFG.
// getReturn|Unwind|UnreachableBlock - Return the new single (or nonexistant)
// return, unwind, or unreachable basic blocks in the CFG.
//
BasicBlock *getReturnBlock() const { return ReturnBlock; }
BasicBlock *getUnwindBlock() const { return UnwindBlock; }
BasicBlock *getUnreachableBlock() const { return UnreachableBlock; }
virtual bool runOnFunction(Function &F);
};