Do not define CRT_HAS_128BIT for MIPS64

Do not define it for MIPS64 until its backend supports it.
See the bug report [1] for more information.

[1] http://llvm.org/bugs/show_bug.cgi?id=20098

Differential Revision: http://reviews.llvm.org/D6703

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@224488 91177308-0d34-0410-b5e6-96231b3b80d8

lib/builtins/int_types.h

diff --git a/lib/builtins/int_types.h b/lib/builtins/int_types.h
index 5107f71..aedae14 100644
--- a/lib/builtins/int_types.h
+++ b/lib/builtins/int_types.h
@@ -56,7 +56,8 @@
     }s;
 } udwords;
 
-#if __LP64__
+/* MIPS64 issue: PR 20098 */
+#if defined(__LP64__) && !(defined(__mips__) && defined(__clang__))
 #define CRT_HAS_128BIT
 #endif