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Implement the equality operators for simple types 

llvm-svn: 39665
This commit is contained in:
Chris Lattner 2007-06-20 18:02:30 +00:00
parent e1e93a5e5d
commit 273c63d450
2 changed files with 31 additions and 1 deletions
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31
clang/CodeGen/CGExpr.cpp
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@ -645,6 +645,9 @@ RValue CodeGenFunction::EmitBinaryOperator(const BinaryOperator *E) {
case BinaryOperator::Shl: return EmitBinaryShl(E);
case BinaryOperator::Shr: return EmitBinaryShr(E);
case BinaryOperator::EQ:
case BinaryOperator::NE: return EmitBinaryEquality(E);
// FIXME: relational
case BinaryOperator::And: return EmitBinaryAnd(E);
@ -768,6 +771,33 @@ RValue CodeGenFunction::EmitBinaryShr(const BinaryOperator *E) {
return RValue::get(Builder.CreateAShr(LHS, RHS, "shr"));
}
RValue CodeGenFunction::EmitBinaryEquality(const BinaryOperator *E) {
RValue LHS, RHS;
EmitUsualArithmeticConversions(E, LHS, RHS);
llvm::Value *Result;
if (LHS.isScalar()) {
if (LHS.getVal()->getType()->isFloatingPoint()) {
if (E->getOpcode() == BinaryOperator::EQ)
Result = Builder.CreateFCmpOEQ(LHS.getVal(), RHS.getVal(), "eq");
else
Result = Builder.CreateFCmpUNE(LHS.getVal(), RHS.getVal(), "ne");
} else {
// Otherwise, it is an integer or pointer comparison.
if (E->getOpcode() == BinaryOperator::EQ)
Result = Builder.CreateICmpEQ(LHS.getVal(), RHS.getVal(), "eq");
else
Result = Builder.CreateICmpNE(LHS.getVal(), RHS.getVal(), "ne");
}
} else {
// Struct/union/complex
assert(0 && "Aggregate comparisons not implemented yet!");
}
// ZExt result to int.
return RValue::get(Builder.CreateZExt(Result, LLVMIntTy, "cmp.ext"));
}
RValue CodeGenFunction::EmitBinaryAnd(const BinaryOperator *E) {
RValue LHS, RHS;
EmitUsualArithmeticConversions(E, LHS, RHS);
@ -869,7 +899,6 @@ RValue CodeGenFunction::EmitBinaryAssign(const BinaryOperator *E) {
return RHS;
}
RValue CodeGenFunction::EmitBinaryComma(const BinaryOperator *E) {
EmitExpr(E->getLHS());
return EmitExpr(E->getRHS());

1
clang/CodeGen/CodeGenFunction.h
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@ -274,6 +274,7 @@ public:
RValue EmitBinaryShr(const BinaryOperator *E);
// FIXME: relational
RValue EmitBinaryEquality(const BinaryOperator *E);
RValue EmitBinaryAnd(const BinaryOperator *E);
RValue EmitBinaryXor(const BinaryOperator *E);