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Some minor cleanup for EmitCastLValue. 

llvm-svn: 88894
This commit is contained in:
Eli Friedman 2009-11-16 05:48:01 +00:00
parent 03bf60a704
commit 8c98dffd1f
1 changed files with 7 additions and 11 deletions
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18
clang/lib/CodeGen/CGExpr.cpp
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@ -1298,14 +1298,8 @@ CodeGenFunction::EmitConditionalOperatorLValue(const ConditionalOperator* E) {
LValue CodeGenFunction::EmitCastLValue(const CastExpr *E) {
switch (E->getCastKind()) {
default:
// If this is an lvalue cast, treat it as a no-op.
// FIXME: We shouldn't need to check for this explicitly!
if (const ImplicitCastExpr *ICE = dyn_cast<ImplicitCastExpr>(E))
if (ICE->isLvalueCast())
return EmitLValue(E->getSubExpr());
assert(false && "Unhandled cast!");
return EmitUnsupportedLValue(E, "unexpected cast lvalue");
case CastExpr::CK_NoOp:
case CastExpr::CK_ConstructorConversion:
case CastExpr::CK_UserDefinedConversion:
@ -1335,16 +1329,18 @@ LValue CodeGenFunction::EmitCastLValue(const CastExpr *E) {
return LValue::MakeAddr(Temp, MakeQualifiers(E->getType()));
}
case CastExpr::CK_BaseToDerived: {
return EmitUnsupportedLValue(E, "base-to-derived cast lvalue");
}
case CastExpr::CK_BitCast: {
// This must be a reinterpret_cast.
const CXXReinterpretCastExpr *CE = cast<CXXReinterpretCastExpr>(E);
// This must be a reinterpret_cast (or c-style equivalent).
const ExplicitCastExpr *CE = cast<ExplicitCastExpr>(E);
LValue LV = EmitLValue(E->getSubExpr());
llvm::Value *V = Builder.CreateBitCast(LV.getAddress(),
ConvertType(CE->getTypeAsWritten()));
return LValue::MakeAddr(V, MakeQualifiers(E->getType()));
}
}
}