Give compiler-rt a chance to compile with mingw-w64.
Patch by C. Bergström! llvm-svn: 186463
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			@ -22,7 +22,9 @@
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 * It should never be exported from a dylib, so it is marked
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 * visibility hidden.
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 */
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#ifndef _WIN32
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__attribute__((visibility("hidden")))
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#endif
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void __eprintf(const char* format, const char* assertion_expression,
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				const char* line, const char* file)
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{
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			@ -24,7 +24,9 @@
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#ifdef KERNEL_USE
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extern void panic(const char *, ...) __attribute__((noreturn));
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#ifndef _WIN32
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__attribute__((visibility("hidden")))
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#endif
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void compilerrt_abort_impl(const char *file, int line, const char *function) {
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  panic("%s:%d: abort in %s", file, line, function);
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}
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			@ -35,8 +37,10 @@ void compilerrt_abort_impl(const char *file, int line, const char *function) {
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extern void __assert_rtn(const char *func, const char *file, 
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                     int line, const char * message) __attribute__((noreturn));
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#ifndef _WIN32
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__attribute__((weak))
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__attribute__((visibility("hidden")))
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#endif
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void compilerrt_abort_impl(const char *file, int line, const char *function) {
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  __assert_rtn(function, file, line, "libcompiler_rt abort");
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}
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			@ -47,8 +51,10 @@ void compilerrt_abort_impl(const char *file, int line, const char *function) {
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/* Get the system definition of abort() */
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#include <stdlib.h>
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#ifndef _WIN32
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__attribute__((weak))
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__attribute__((visibility("hidden")))
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#endif
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void compilerrt_abort_impl(const char *file, int line, const char *function) {
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  abort();
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}
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