[libcxxabi] Fix -Werror build for 32-bit non-ARM.

Summary:
The inclusion of Unwind-EHABI.h was insufficiently guarded
(LIBCXXABI_ARM_EHABI was beign checked without ever being defined).

Move the check into the header file itself, add the check to the
source file, and clean up the existing checks.

LIBCXXABI_ARM_EHABI didn't have a canonical defintion; it was
duplicated across cxxabi.h, libunwind.h, and unwind.h. Move the
definition into __cxxabi_config.h and clean up the old cruft (note: we
will have to ship this header).

There are also a few drive-by formatting/whitespace cleanups.

Reviewers: jroelofs, thakis, compnerd

Reviewed By: compnerd

Subscribers: compnerd, aemerson, cfe-commits

Differential Revision: http://reviews.llvm.org/D7419

llvm-svn: 228363

1 files changed, 1 insertions, 9 deletions

diff --git a/libcxxabi/include/unwind.h b/libcxxabi/include/unwind.h
index 6a265cc31fa..3d889cf40ac 100644
--- a/libcxxabi/include/unwind.h
+++ b/libcxxabi/include/unwind.h
@@ -23,13 +23,7 @@
 #define LIBUNWIND_UNAVAIL
 #endif
 
-// FIXME: This is also in cxxabi.h and libunwind.h, can we consolidate?
-#if !defined(__USING_SJLJ_EXCEPTIONS__) && defined(__arm__) && \
-    !defined(__ARM_DWARF_EH__) && !defined(__APPLE__)
-#define LIBCXXABI_ARM_EHABI 1
-#else
-#define LIBCXXABI_ARM_EHABI 0
-#endif
+#include <__cxxabi_config.h>
 
 typedef enum {
   _URC_NO_REASON = 0,
@@ -208,9 +202,7 @@ extern _Unwind_VRS_Result
 _Unwind_VRS_Pop(_Unwind_Context *context, _Unwind_VRS_RegClass regclass,
                 uint32_t discriminator,
                 _Unwind_VRS_DataRepresentation representation);
-#endif
 
-#if LIBCXXABI_ARM_EHABI
 static inline uintptr_t _Unwind_GetGR(struct _Unwind_Context* context,
                                       int index) {
   uintptr_t value = 0;