Change the interface to SCEVExpander::InsertCastOfTo to take a cast opcode
so the decision of which opcode to use is pushed upward to the caller.
Adjust the callers to pass the expected opcode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32535 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/ScalarEvolutionExpander.cpp b/lib/Analysis/ScalarEvolutionExpander.cpp
index db23a24..5e395db 100644
--- a/lib/Analysis/ScalarEvolutionExpander.cpp
+++ b/lib/Analysis/ScalarEvolutionExpander.cpp
@@ -19,25 +19,8 @@
/// InsertCastOfTo - Insert a cast of V to the specified type, doing what
/// we can to share the casts.
-Value *SCEVExpander::InsertCastOfTo(Value *V, const Type *Ty) {
- // Compute the Cast opcode to use
- Instruction::CastOps opcode = Instruction::BitCast;
- if (Ty->isIntegral()) {
- if (V->getType()->getTypeID() == Type::PointerTyID)
- opcode = Instruction::PtrToInt;
- else {
- unsigned SrcBits = V->getType()->getPrimitiveSizeInBits();
- unsigned DstBits = Ty->getPrimitiveSizeInBits();
- opcode = (SrcBits > DstBits ? Instruction::Trunc :
- (SrcBits == DstBits ? Instruction::BitCast :
- (V->getType()->isSigned() ? Instruction::SExt :
- Instruction::ZExt)));
- }
- } else if (Ty->isFloatingPoint())
- opcode = Instruction::UIToFP;
- else if (Ty->getTypeID() == Type::PointerTyID && V->getType()->isIntegral())
- opcode = Instruction::IntToPtr;
-
+Value *SCEVExpander::InsertCastOfTo(Instruction::CastOps opcode, Value *V,
+ const Type *Ty) {
// FIXME: keep track of the cast instruction.
if (Constant *C = dyn_cast<Constant>(V))
return ConstantExpr::getCast(opcode, C, Ty);