Try to handle Cast in all the places it needs to be handled

Author: spall

clang/lib/AST/Expr.cpp

@@ -1957,6 +1957,7 @@ bool CastExpr::CastConsistency() const {
   case CK_HLSLArrayRValue:
   case CK_HLSLVectorTruncation:
   case CK_HLSLElementwiseCast:
+  case CK_HLSLSplatCast:
   CheckNoBasePath:
     assert(path_empty() && "Cast kind should not have a base path!");
     break;

clang/lib/AST/ExprConstant.cpp

@@ -15029,6 +15029,7 @@ bool IntExprEvaluator::VisitCastExpr(const CastExpr *E) {
   case CK_FixedPointCast:
   case CK_IntegralToFixedPoint:
   case CK_MatrixCast:
+  case CK_HLSLSplatCast:
     llvm_unreachable("invalid cast kind for integral value");
 
   case CK_BitCast:
@@ -15907,6 +15908,7 @@ bool ComplexExprEvaluator::VisitCastExpr(const CastExpr *E) {
   case CK_MatrixCast:
   case CK_HLSLVectorTruncation:
   case CK_HLSLElementwiseCast:
+  case CK_HLSLSplatCast:
     llvm_unreachable("invalid cast kind for complex value");
 
   case CK_LValueToRValue:

clang/lib/CodeGen/CGExprAgg.cpp

@@ -1592,6 +1592,7 @@ static bool castPreservesZero(const CastExpr *CE) {
   case CK_AtomicToNonAtomic:
   case CK_HLSLVectorTruncation:
   case CK_HLSLElementwiseCast:
+    // TODO is this true for CK_HLSLSplatCast
     return true;
 
   case CK_BaseToDerivedMemberPointer:

clang/lib/CodeGen/CGExprComplex.cpp

@@ -611,6 +611,7 @@ ComplexPairTy ComplexExprEmitter::EmitCast(CastKind CK, Expr *Op,
   case CK_HLSLVectorTruncation:
   case CK_HLSLArrayRValue:
   case CK_HLSLElementwiseCast:
+  case CK_HLSLSplatCast:
     llvm_unreachable("invalid cast kind for complex value");
 
   case CK_FloatingRealToComplex:

clang/lib/CodeGen/CGExprConstant.cpp

@@ -1336,6 +1336,7 @@ class ConstExprEmitter
     case CK_HLSLVectorTruncation:
     case CK_HLSLArrayRValue:
     case CK_HLSLElementwiseCast:
+    case CK_HLSLSplatCast:
       return nullptr;
     }
     llvm_unreachable("Invalid CastKind");

clang/lib/Edit/RewriteObjCFoundationAPI.cpp

@@ -1086,6 +1086,7 @@ static bool rewriteToNumericBoxedExpression(const ObjCMessageExpr *Msg,
 
     case CK_HLSLVectorTruncation:
     case CK_HLSLElementwiseCast:
+    case CK_HLSLSplatCast:
       llvm_unreachable("HLSL-specific cast in Objective-C?");
       break;
 

clang/lib/StaticAnalyzer/Core/ExprEngineC.cpp

@@ -523,6 +523,7 @@ void ExprEngine::VisitCast(const CastExpr *CastE, const Expr *Ex,
       case CK_MatrixCast:
       case CK_VectorSplat:
       case CK_HLSLElementwiseCast:
+      case CK_HLSLSplatCast:
       case CK_HLSLVectorTruncation: {
         QualType resultType = CastE->getType();
         if (CastE->isGLValue())