commit d07eb3b5b47c22abd0db7b5d0b377c9db0fd7c34
author Chris Lattner <sabre@nondot.org> Fri Jul 13 20:25:53 2007 +0000
committer Chris Lattner <sabre@nondot.org> Fri Jul 13 20:25:53 2007 +0000
tree 53e0d8a993b67f1cf90e7e75b38ee3514e7a8a67
parent d0d560a0975c2f8c4a9559e84ec556b6a0baf7df

implement codegen support for implicit casts.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@39831 91177308-0d34-0410-b5e6-96231b3b80d8

CodeGen/CGExpr.cpp

diff --git a/CodeGen/CGExpr.cpp b/CodeGen/CGExpr.cpp
index fc59ec0..78818ce 100644
--- a/CodeGen/CGExpr.cpp
+++ b/CodeGen/CGExpr.cpp
@@ -472,8 +472,10 @@
     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 @@
   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) {

CodeGen/CodeGenFunction.h

diff --git a/CodeGen/CodeGenFunction.h b/CodeGen/CodeGenFunction.h
index 7a07f25..7479743 100644
--- a/CodeGen/CodeGenFunction.h
+++ b/CodeGen/CodeGenFunction.h
@@ -313,7 +313,7 @@
   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);