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Add a helper function to PHI node

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1113 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2001-11-03 21:08:00 +00:00
parent 80b1a1a26a
commit 3bf04d5b99
1 changed files with 11 additions and 0 deletions
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11
include/llvm/iOther.h
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@ -48,6 +48,9 @@ public:
inline BasicBlock *getIncomingBlock(unsigned i) {
return cast<BasicBlock>(Operands[i*2+1]);
}
inline void setIncomingBlock(unsigned i, BasicBlock *BB) {
Operands[i*2+1] = BB;
}
// addIncoming - Add an incoming value to the end of the PHI list
void addIncoming(Value *D, BasicBlock *BB);
@ -56,6 +59,14 @@ public:
// predecessor basic block is deleted. The value removed is returned.
Value *removeIncomingValue(const BasicBlock *BB);
// getBasicBlockIndex - Return the first index of the specified basic
// block in the value list for this PHI. Returns -1 if no instance.
//
int getBasicBlockIndex(const BasicBlock *BB) const {
for (unsigned i = 0; i < Operands.size()/2; ++i)
if (getIncomingBlock(i) == BB) return i;
return -1;
}
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const PHINode *) { return true; }