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Remove support for unary operators 

llvm-svn: 3318
This commit is contained in:
Chris Lattner 2002-08-14 17:53:45 +00:00
parent 3733c7374e
commit 6e1a1b1289
1 changed files with 4 additions and 6 deletions
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10
llvm/lib/Transforms/Scalar/SCCP.cpp
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@ -179,8 +179,7 @@ private:
void visitReturnInst(ReturnInst &I) { /*does not have an effect*/ }
void visitTerminatorInst(TerminatorInst &TI);
void visitUnaryOperator(Instruction &I);
void visitCastInst(CastInst &I) { visitUnaryOperator(I); }
void visitCastInst(CastInst &I);
void visitBinaryOperator(Instruction &I);
void visitShiftInst(ShiftInst &I) { visitBinaryOperator(I); }
@ -478,15 +477,14 @@ void SCCP::visitTerminatorInst(TerminatorInst &TI) {
}
}
void SCCP::visitUnaryOperator(Instruction &I) {
void SCCP::visitCastInst(CastInst &I) {
Value *V = I.getOperand(0);
InstVal &VState = getValueState(V);
if (VState.isOverdefined()) { // Inherit overdefinedness of operand
markOverdefined(&I);
} else if (VState.isConstant()) { // Propogate constant value
Constant *Result = isa<CastInst>(I)
? ConstantFoldCastInstruction(VState.getConstant(), I.getType())
: ConstantFoldUnaryInstruction(I.getOpcode(), VState.getConstant());
Constant *Result =
ConstantFoldCastInstruction(VState.getConstant(), I.getType());
if (Result) {
// This instruction constant folds!