[PATCH] CUDA: Add option to allow host device functions to call host functions

[Eli Bendersky]

================
Comment at: test/SemaCUDA/function-target-hd.cu:3
@@ +2,3 @@
+// RUN: %clang_cc1 -fsyntax-only -fcuda-is-device -verify %s
+// RUN: %clang_cc1 -fsyntax-only -fcuda-allow-host-calls-from-host-device -verify %s -DTEST_WARN_HD
+// RUN: %clang_cc1 -fsyntax-only -fcuda-is-device -fcuda-allow-host-calls-from-host-device -verify %s -DTEST_WARN_HD
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Much better thanks. Just a small nit: add a comment that explains the various permutations of CUDA_ARCH and TEST_WARN_HD to make this test file more readable a year from now

http://reviews.llvm.org/D7841

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