Switch lowering: remove unnecessary ConstantInt casts. NFC.
llvm-svn: 232729
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
index faf2274..2d14476 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
@@ -137,19 +137,19 @@
/// Case - A struct to record the Value for a switch case, and the
/// case's target basic block.
struct Case {
- const Constant *Low;
- const Constant *High;
+ const ConstantInt *Low;
+ const ConstantInt *High;
MachineBasicBlock* BB;
uint32_t ExtraWeight;
Case() : Low(nullptr), High(nullptr), BB(nullptr), ExtraWeight(0) { }
- Case(const Constant *low, const Constant *high, MachineBasicBlock *bb,
+ Case(const ConstantInt *low, const ConstantInt *high, MachineBasicBlock *bb,
uint32_t extraweight) : Low(low), High(high), BB(bb),
ExtraWeight(extraweight) { }
APInt size() const {
- const APInt &rHigh = cast<ConstantInt>(High)->getValue();
- const APInt &rLow = cast<ConstantInt>(Low)->getValue();
+ const APInt &rHigh = High->getValue();
+ const APInt &rLow = Low->getValue();
return (rHigh - rLow + 1ULL);
}
};
@@ -173,7 +173,7 @@
/// CaseRec - A struct with ctor used in lowering switches to a binary tree
/// of conditional branches.
struct CaseRec {
- CaseRec(MachineBasicBlock *bb, const Constant *lt, const Constant *ge,
+ CaseRec(MachineBasicBlock *bb, const ConstantInt *lt, const ConstantInt *ge,
CaseRange r) :
CaseBB(bb), LT(lt), GE(ge), Range(r) {}
@@ -181,8 +181,8 @@
MachineBasicBlock *CaseBB;
/// LT, GE - If nonzero, we know the current case value must be less-than or
/// greater-than-or-equal-to these Constants.
- const Constant *LT;
- const Constant *GE;
+ const ConstantInt *LT;
+ const ConstantInt *GE;
/// Range - A pair of iterators representing the range of case values to be
/// processed at this point in the binary search tree.
CaseRange Range;
@@ -194,10 +194,7 @@
/// WARNING: Case ranges should be disjoint!
struct CaseCmp {
bool operator()(const Case &C1, const Case &C2) {
- assert(isa<ConstantInt>(C1.Low) && isa<ConstantInt>(C2.High));
- const ConstantInt* CI1 = cast<const ConstantInt>(C1.Low);
- const ConstantInt* CI2 = cast<const ConstantInt>(C2.High);
- return CI1->getValue().slt(CI2->getValue());
+ return C1.Low->getValue().slt(C2.High->getValue());
}
};