[OpenCL] Improve OpenCL operator tests

Extend testing of increment/decrement operators and make sure these
operators are tested in only one dedicated test file.

Rename logical-ops.cl to operators.cl, as it was already containing
more than just logical operators.

Add testing for the remainder operator on floating point types.

clang/test/SemaOpenCL/invalid-vector-literals.cl

@@ -8,7 +8,6 @@ void vector_literals_invalid()
 {
   int4 a = (int4)(1,2,3); // expected-error{{too few elements}}
   int4 b = (int4)(1,2,3,4,5); // expected-error{{excess elements in vector}}
-  ((float4)(1.0f))++; // expected-error{{cannot increment value of type 'float4'}}
   int8 d = (int8)(a,(float4)(1)); // expected-error{{initializing 'int' with an expression of incompatible type 'float4'}}
   ((int4)(0)).x = 8; // expected-error{{expression is not assignable}}
 }

clang/test/SemaOpenCL/logical-ops.cl → clang/test/SemaOpenCL/operators.cl

@@ -36,6 +36,8 @@ kernel void float_ops() {
 #if __OPENCL_C_VERSION__ < 120
 // expected-error@-2{{invalid argument type}}
 #endif
+  float fcst = 5.5f;
+  float fremainder = fcst % 2.0f; // expected-error {{invalid operands to binary expression}}
 }
 
 kernel void vec_float_ops() {
@@ -56,6 +58,8 @@ kernel void vec_float_ops() {
 #if __OPENCL_C_VERSION__ < 120
 // expected-error@-2{{invalid argument type}}
 #endif
+  float4 f4cst = (float4)(5.5f, 5.5f, 5.5f, 5.5f);
+  float4 f4remainder = f4cst % (float4)(2.0f, 2.0f, 2.0f, 2.0f); // expected-error {{invalid operands to binary expression}}
 }
 
 kernel void double_ops() {
@@ -85,6 +89,8 @@ kernel void double_ops() {
 #if __OPENCL_C_VERSION__ < 120
 // expected-error@-2{{invalid argument type}}
 #endif
+  double dcst = 5.5;
+  double dremainder = dcst % 2.0; // expected-error {{invalid operands to binary expression}}
 }
 
 kernel void vec_double_ops() {

clang/test/SemaOpenCL/vector_inc_dec_ops.cl

@@ -1,9 +1,9 @@
 // RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only
-// expected-no-diagnostics
 
 typedef __attribute__((ext_vector_type(2)))  char char2;
 typedef __attribute__((ext_vector_type(4)))  unsigned int uint4;
 typedef __attribute__((ext_vector_type(8)))  long long8;
+typedef __attribute__((ext_vector_type(4)))  float float4;
 
 void vectorIncrementDecrementOps()
 {
@@ -17,3 +17,10 @@ void vectorIncrementDecrementOps()
   ++B;
   C++;
 }
+
+void invalidIncrementDecrementOps() {
+  ((float4)(1.0f))++; // expected-error{{cannot increment value of type 'float4'}}
+  float4 i;
+  ++i; // expected-error{{cannot increment value of type '__private float4'}}
+  i--; // expected-error{{cannot decrement value of type '__private float4'}}
+}