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implement codegen support for implicit casts. 

llvm-svn: 39831
This commit is contained in:
Chris Lattner 2007-07-13 20:25:53 +00:00
parent 5c2f76b395
commit 388cf760e2
2 changed files with 11 additions and 7 deletions
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16
clang/CodeGen/CGExpr.cpp
View File

@ -472,8 +472,10 @@ RValue CodeGenFunction::EmitExpr(const Expr *E) {
return EmitExpr(cast<ParenExpr>(E)->getSubExpr());
case Expr::UnaryOperatorClass:
return EmitUnaryOperator(cast<UnaryOperator>(E));
case Expr::ImplicitCastExprClass:
return EmitCastExpr(cast<ImplicitCastExpr>(E)->getSubExpr(), E->getType());
case Expr::CastExprClass:
return EmitCastExpr(cast<CastExpr>(E));
return EmitCastExpr(cast<CastExpr>(E)->getSubExpr(), E->getType());
case Expr::CallExprClass:
return EmitCallExpr(cast<CallExpr>(E));
case Expr::BinaryOperatorClass:
@ -518,16 +520,18 @@ RValue CodeGenFunction::EmitArraySubscriptExprRV(const ArraySubscriptExpr *E) {
return RValue::get(Builder.CreateExtractElement(Base, Idx, "vecext"));
}
RValue CodeGenFunction::EmitCastExpr(const CastExpr *E) {
// EmitCastExpr - Emit code for an explicit or implicit cast. Implicit casts
// have to handle a more broad range of conversions than explicit casts, as they
// handle things like function to ptr-to-function decay etc.
RValue CodeGenFunction::EmitCastExpr(const Expr *Op, QualType DestTy) {
QualType SrcTy;
RValue Src = EmitExprWithUsualUnaryConversions(E->getSubExpr(), SrcTy);
RValue Src = EmitExprWithUsualUnaryConversions(Op, SrcTy);
// If the destination is void, just evaluate the source.
if (E->getType()->isVoidType())
if (DestTy->isVoidType())
return RValue::getAggregate(0);
return EmitConversion(Src, SrcTy, E->getType());
return EmitConversion(Src, SrcTy, DestTy);
}
RValue CodeGenFunction::EmitCallExpr(const CallExpr *E) {

2
clang/CodeGen/CodeGenFunction.h
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@ -313,7 +313,7 @@ public:
RValue EmitFloatingLiteral(const FloatingLiteral *E);
RValue EmitCharacterLiteral(const CharacterLiteral *E);
RValue EmitCastExpr(const CastExpr *E);
RValue EmitCastExpr(const Expr *Op, QualType DestTy);
RValue EmitCallExpr(const CallExpr *E);
RValue EmitArraySubscriptExprRV(const ArraySubscriptExpr *E);