[OpenCL] Set target as spir for c-index-test for OpenCL

[azabaznov]

Summary

Otherwise (for other targets) testing may be non-determistic as
targets support different extension/feature set, but SPIR target
support all extensions/features by default

[Anastasia]

LGTM! I can't see why we would need to tests anything target-specific here anyway, so I think the change is reasonable.

[thakis]

Can we get this landed asap please?

[Anastasia]

In D98539#2623038, @thakis wrote:

Can we get this landed asap please?

Done! Sorry for the noise.

[azabaznov]

@Anastasia, thanks for landing this! Sorry for delay, I though that this can wait until Monday

clang/test/Index/cxx.cl

 // C++ for OpenCL specific logic.
 void test(int *ptr) {
   addrspace_cast<__global int*>(ptr);
 }
 
-// RUN: c-index-test -test-load-source all %s -cl-std=clc++ | FileCheck %s
+// RUN: c-index-test -test-load-source all %s -cl-std=clc++ -target spir | FileCheck %s
 // CHECK: cxx.cl:3:3: CXXAddrspaceCastExpr

clang/test/Index/opencl-types.cl

-// RUN: c-index-test -test-print-type %s -cl-std=CL2.0 | FileCheck %s
+// RUN: c-index-test -test-print-type %s -cl-std=CL2.0 -target spir | FileCheck %s
 
 #pragma OPENCL EXTENSION cl_khr_fp16 : enable
 #pragma OPENCL EXTENSION cl_khr_fp64 : enable
 
 typedef half half4 __attribute__((ext_vector_type(4)));
 typedef float float4 __attribute__((ext_vector_type(4)));
 typedef double double4 __attribute__((ext_vector_type(4)));