Catch invalid bitwise operation on vector of floats

Bitwise complement applied to vector of floats described with
attribute `ext_vector_type` is not diagnosed as error. Attempt to
compile such construct causes assertion violation in Instruction.cpp.
With this change the complement is treated similar to the case of
vector type described with attribute `vector_size`.

Differential Revision: https://reviews.llvm.org/D33732

llvm-svn: 304963

clang/lib/Sema/SemaExpr.cpp

@@ -11975,16 +11975,13 @@ ExprResult Sema::CreateBuiltinUnaryOp(SourceLocation OpLoc,
           << resultType << Input.get()->getSourceRange();
     else if (resultType->hasIntegerRepresentation())
       break;
-    else if (resultType->isExtVectorType()) {
-      if (Context.getLangOpts().OpenCL) {
-        // OpenCL v1.1 s6.3.f: The bitwise operator not (~) does not operate
-        // on vector float types.
-        QualType T = resultType->getAs<ExtVectorType>()->getElementType();
-        if (!T->isIntegerType())
-          return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr)
-                           << resultType << Input.get()->getSourceRange());
-      }
-      break;
+    else if (resultType->isExtVectorType() && Context.getLangOpts().OpenCL) {
+      // OpenCL v1.1 s6.3.f: The bitwise operator not (~) does not operate
+      // on vector float types.
+      QualType T = resultType->getAs<ExtVectorType>()->getElementType();
+      if (!T->isIntegerType())
+        return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr)
+                          << resultType << Input.get()->getSourceRange());
     } else {
       return ExprError(Diag(OpLoc, diag::err_typecheck_unary_expr)
                        << resultType << Input.get()->getSourceRange());

clang/test/Sema/ext_vector_ops.c

@@ -0,0 +1,27 @@
+// RUN: %clang_cc1 %s -verify -fsyntax-only -Wvector-conversion -triple x86_64-apple-darwin10
+
+typedef unsigned int v2u __attribute__ ((ext_vector_type(2)));
+typedef int v2s __attribute__ ((ext_vector_type(2)));
+typedef float v2f __attribute__ ((ext_vector_type(2)));
+
+void test1(v2u v2ua, v2s v2sa, v2f v2fa) {
+  // Bitwise binary operators
+  (void)(v2ua & v2ua);
+  (void)(v2fa & v2fa); // expected-error{{invalid operands to binary expression}}
+
+  // Unary operators
+  (void)(~v2ua);
+  (void)(~v2fa); // expected-error{{invalid argument type 'v2f' (vector of 2 'float' values) to unary}}
+
+  // Comparison operators
+  v2sa = (v2ua==v2sa);
+
+  // Arrays
+  int array1[v2ua]; // expected-error{{size of array has non-integer type 'v2u' (vector of 2 'unsigned int' values}}
+  int array2[17];
+  // FIXME: error message below needs type!
+  (void)(array2[v2ua]); // expected-error{{array subscript is not an integer}}
+
+  v2u *v2u_ptr = 0;
+  v2s *v2s_ptr;
+}