Index: compiler-rt/trunk/cmake/config-ix.cmake
===================================================================
--- compiler-rt/trunk/cmake/config-ix.cmake
+++ compiler-rt/trunk/cmake/config-ix.cmake
@@ -134,7 +134,7 @@
 filter_available_targets(MSAN_SUPPORTED_ARCH x86_64)
 filter_available_targets(PROFILE_SUPPORTED_ARCH x86_64 i386 arm aarch64)
 filter_available_targets(TSAN_SUPPORTED_ARCH x86_64)
-filter_available_targets(UBSAN_SUPPORTED_ARCH x86_64 i386 arm aarch64)
+filter_available_targets(UBSAN_SUPPORTED_ARCH x86_64 i386 arm aarch64 mips)
 
 if(ANDROID)
   set(OS_NAME "Android")
Index: compiler-rt/trunk/lib/sanitizer_common/sanitizer_stacktrace.cc
===================================================================
--- compiler-rt/trunk/lib/sanitizer_common/sanitizer_stacktrace.cc
+++ compiler-rt/trunk/lib/sanitizer_common/sanitizer_stacktrace.cc
@@ -25,7 +25,7 @@
 #if defined(__powerpc__) || defined(__powerpc64__)
   // PCs are always 4 byte aligned.
   return pc - 4;
-#elif defined(__sparc__)
+#elif defined(__sparc__) || defined(__mips__)
   return pc - 8;
 #else
   return pc - 1;
Index: compiler-rt/trunk/test/ubsan/TestCases/Float/cast-overflow.cpp
===================================================================
--- compiler-rt/trunk/test/ubsan/TestCases/Float/cast-overflow.cpp
+++ compiler-rt/trunk/test/ubsan/TestCases/Float/cast-overflow.cpp
@@ -14,6 +14,7 @@
 
 // This test assumes float and double are IEEE-754 single- and double-precision.
 
+#include <endian.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>
@@ -41,12 +42,20 @@
   unsigned Zero = NearlyMinusOne; // ok
 
   // Build a '+Inf'.
+#if __BYTE_ORDER == __LITTLE_ENDIAN
   char InfVal[] = { 0x00, 0x00, 0x80, 0x7f };
+#else
+  char InfVal[] = { 0x7f, 0x80, 0x00, 0x00 };
+#endif
   float Inf;
   memcpy(&Inf, InfVal, 4);
 
   // Build a 'NaN'.
+#if __BYTE_ORDER == __LITTLE_ENDIAN
   char NaNVal[] = { 0x01, 0x00, 0x80, 0x7f };
+#else
+  char NaNVal[] = { 0x7f, 0x80, 0x00, 0x01 };
+#endif
   float NaN;
   memcpy(&NaN, NaNVal, 4);