[CUDA] Add tests for compiling CUDA files with -E.

[tra]

test/Driver/cuda-preprocess.cu

13–16 ↗

(On Diff #44541)

Given it's a driver test you probably just want to check the list of commands generated by driver (-###)

Checking preprocessing results would probably belong to test/Preprocessor.

17 ↗

(On Diff #44541)

This would succeed if we fail to preprocess as it would catch 'clang_unittest_no_arch' in the #ifndef above.

I'd add some macro which will get preprocessed away:

#ifndef __CUDA_ARCH__
#define PREPROCESSED_AWAY
clang_unittest_no_arch __ PREPROCESSED_AWAY
...

It may be an overkill, though. Up to you.

[jlebar]

Address tra's review comments.

[jlebar]

test/Driver/cuda-preprocess.cu

13–16 ↗

(On Diff #44541)

Cool, moved to Preprocessor/.

17 ↗

(On Diff #44541)

sgtm, done.

[jlebar]

Thank you for the review, Artem.

cfe/trunk/test/Preprocessor/cuda-preprocess.cu

+// Tests CUDA compilation with -E.
+
+// REQUIRES: clang-driver
+// REQUIRES: x86-registered-target
+// REQUIRES: nvptx-registered-target
+
+#ifndef __CUDA_ARCH__
+#define PREPROCESSED_AWAY
+clang_unittest_no_arch PREPROCESSED_AWAY
+#else
+clang_unittest_cuda_arch __CUDA_ARCH__
+#endif
+
+// CHECK-NOT: PREPROCESSED_AWAY
+
+// RUN: %clang -E -target x86_64-linux-gnu --cuda-gpu-arch=sm_20 %s 2>&1 \
+// RUN:   | FileCheck -check-prefix NOARCH %s
+// RUN: %clang -E -target x86_64-linux-gnu --cuda-gpu-arch=sm_20 --cuda-host-only %s 2>&1 \
+// RUN:   | FileCheck -check-prefix NOARCH %s
+// NOARCH: clang_unittest_no_arch
+
+// RUN: %clang -E -target x86_64-linux-gnu --cuda-gpu-arch=sm_20 --cuda-device-only %s 2>&1 \
+// RUN:   | FileCheck -check-prefix SM20 %s
+// SM20: clang_unittest_cuda_arch 200
+
+// RUN: %clang -E -target x86_64-linux-gnu --cuda-gpu-arch=sm_30 --cuda-device-only %s 2>&1 \
+// RUN:   | FileCheck -check-prefix SM30 %s
+// SM30: clang_unittest_cuda_arch 300
+
+// RUN: %clang -E -target x86_64-linux-gnu --cuda-gpu-arch=sm_20 --cuda-gpu-arch=sm_30 \
+// RUN:   --cuda-device-only %s 2>&1 \
+// RUN:   | FileCheck -check-prefix SM20 -check-prefix SM30 %s