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Refactor a bunch of code into a non-inlined method
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25972 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -86,6 +86,10 @@ namespace llvm {
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return expandInTy(SH, Ty);
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}
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/// InsertCastOfTo - Insert a cast of V to the specified type, doing what
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/// we can to share the casts.
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static Value *InsertCastOfTo(Value *V, const Type *Ty);
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protected:
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Value *expand(SCEV *S) {
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// Check to see if we already expanded this.
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@ -100,39 +104,8 @@ namespace llvm {
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Value *expandInTy(SCEV *S, const Type *Ty) {
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Value *V = expand(S);
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if (Ty && V->getType() != Ty) {
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// FIXME: keep track of the cast instruction.
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if (Constant *C = dyn_cast<Constant>(V))
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return ConstantExpr::getCast(C, Ty);
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else if (Instruction *I = dyn_cast<Instruction>(V)) {
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// Check to see if there is already a cast. If there is, use it.
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for (Value::use_iterator UI = I->use_begin(), E = I->use_end();
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UI != E; ++UI) {
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if ((*UI)->getType() == Ty)
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if (CastInst *CI = dyn_cast<CastInst>(cast<Instruction>(*UI))) {
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BasicBlock::iterator It = I; ++It;
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if (isa<InvokeInst>(I))
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It = cast<InvokeInst>(I)->getNormalDest()->begin();
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while (isa<PHINode>(It)) ++It;
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if (It != BasicBlock::iterator(CI)) {
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// Splice the cast immediately after the operand in question.
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BasicBlock::InstListType &InstList =
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It->getParent()->getInstList();
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InstList.splice(It, CI->getParent()->getInstList(), CI);
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}
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return CI;
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}
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}
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BasicBlock::iterator IP = I; ++IP;
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if (InvokeInst *II = dyn_cast<InvokeInst>(I))
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IP = II->getNormalDest()->begin();
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while (isa<PHINode>(IP)) ++IP;
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return new CastInst(V, Ty, V->getName(), IP);
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} else {
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// FIXME: check to see if there is already a cast!
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return new CastInst(V, Ty, V->getName(), InsertPt);
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}
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}
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if (Ty && V->getType() != Ty)
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return InsertCastOfTo(V, Ty);
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return V;
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}
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