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Refactor a bunch of code into a non-inlined method

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25972 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2006-02-04 09:51:33 +00:00
parent b46ef67679
commit ed412ac2cb
1 changed files with 6 additions and 33 deletions
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39
include/llvm/Analysis/ScalarEvolutionExpander.h
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@@ -86,6 +86,10 @@ namespace llvm {
return expandInTy(SH, Ty); return expandInTy(SH, Ty);
} }
/// InsertCastOfTo - Insert a cast of V to the specified type, doing what
/// we can to share the casts.
static Value *InsertCastOfTo(Value *V, const Type *Ty);
protected: protected:
Value *expand(SCEV *S) { Value *expand(SCEV *S) {
// Check to see if we already expanded this. // Check to see if we already expanded this.
@@ -100,39 +104,8 @@ namespace llvm {
Value *expandInTy(SCEV *S, const Type *Ty) { Value *expandInTy(SCEV *S, const Type *Ty) {
Value *V = expand(S); Value *V = expand(S);
if (Ty && V->getType() != Ty) { if (Ty && V->getType() != Ty)
// FIXME: keep track of the cast instruction. return InsertCastOfTo(V, Ty);
if (Constant *C = dyn_cast<Constant>(V))
return ConstantExpr::getCast(C, Ty);
else if (Instruction *I = dyn_cast<Instruction>(V)) {
// Check to see if there is already a cast. If there is, use it.
for (Value::use_iterator UI = I->use_begin(), E = I->use_end();
UI != E; ++UI) {
if ((*UI)->getType() == Ty)
if (CastInst *CI = dyn_cast<CastInst>(cast<Instruction>(*UI))) {
BasicBlock::iterator It = I; ++It;
if (isa<InvokeInst>(I))
It = cast<InvokeInst>(I)->getNormalDest()->begin();
while (isa<PHINode>(It)) ++It;
if (It != BasicBlock::iterator(CI)) {
// Splice the cast immediately after the operand in question.
BasicBlock::InstListType &InstList =
It->getParent()->getInstList();
InstList.splice(It, CI->getParent()->getInstList(), CI);
}
return CI;
}
}
BasicBlock::iterator IP = I; ++IP;
if (InvokeInst *II = dyn_cast<InvokeInst>(I))
IP = II->getNormalDest()->begin();
while (isa<PHINode>(IP)) ++IP;
return new CastInst(V, Ty, V->getName(), IP);
} else {
// FIXME: check to see if there is already a cast!
return new CastInst(V, Ty, V->getName(), InsertPt);
}
}
return V; return V;
} }