Revert "Revert "Upgrade to 5.0.71.48"" DO NOT MERGE

This reverts commit f2e3994fa5148cc3d9946666f0b0596290192b0e,
and updates the x64 makefile properly so it doesn't break that
build.

FPIIM-449

Change-Id: Ib83e35bfbae6af627451c926a9650ec57c045605
(cherry picked from commit 109988c7ccb6f3fd1a58574fa3dfb88beaef6632)
diff --git a/third_party/llvm-build/Release+Asserts/lib/clang/3.9.0/include/avx512vbmivlintrin.h b/third_party/llvm-build/Release+Asserts/lib/clang/3.9.0/include/avx512vbmivlintrin.h
new file mode 100644
index 0000000..5798969
--- /dev/null
+++ b/third_party/llvm-build/Release+Asserts/lib/clang/3.9.0/include/avx512vbmivlintrin.h
@@ -0,0 +1,188 @@
+/*===------------- avx512vbmivlintrin.h - VBMI intrinsics ------------------===
+ *
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ *===-----------------------------------------------------------------------===
+ */
+#ifndef __IMMINTRIN_H
+#error "Never use <avx512vbmivlintrin.h> directly; include <immintrin.h> instead."
+#endif
+
+#ifndef __VBMIVLINTRIN_H
+#define __VBMIVLINTRIN_H
+
+/* Define the default attributes for the functions in this file. */
+#define __DEFAULT_FN_ATTRS __attribute__(( __nodebug__, __target__("avx512vbmi,avx512vl")))
+
+
+static __inline__ __m128i __DEFAULT_FN_ATTRS
+_mm_mask2_permutex2var_epi8 (__m128i __A, __m128i __I, __mmask16 __U,
+            __m128i __B)
+{
+  return (__m128i) __builtin_ia32_vpermi2varqi128_mask ((__v16qi) __A,
+              (__v16qi) __I
+              /* idx */ ,
+              (__v16qi) __B,
+              (__mmask16)
+              __U);
+}
+
+static __inline__ __m256i __DEFAULT_FN_ATTRS
+_mm256_mask2_permutex2var_epi8 (__m256i __A, __m256i __I,
+         __mmask32 __U, __m256i __B)
+{
+  return (__m256i) __builtin_ia32_vpermi2varqi256_mask ((__v32qi) __A,
+              (__v32qi) __I
+              /* idx */ ,
+              (__v32qi) __B,
+              (__mmask32)
+              __U);
+}
+
+static __inline__ __m128i __DEFAULT_FN_ATTRS
+_mm_permutex2var_epi8 (__m128i __A, __m128i __I, __m128i __B)
+{
+  return (__m128i) __builtin_ia32_vpermt2varqi128_mask ((__v16qi) __I
+              /* idx */ ,
+              (__v16qi) __A,
+              (__v16qi) __B,
+              (__mmask16) -
+              1);
+}
+
+static __inline__ __m128i __DEFAULT_FN_ATTRS
+_mm_mask_permutex2var_epi8 (__m128i __A, __mmask16 __U, __m128i __I,
+           __m128i __B)
+{
+  return (__m128i) __builtin_ia32_vpermt2varqi128_mask ((__v16qi) __I
+              /* idx */ ,
+              (__v16qi) __A,
+              (__v16qi) __B,
+              (__mmask16)
+              __U);
+}
+
+static __inline__ __m128i __DEFAULT_FN_ATTRS
+_mm_maskz_permutex2var_epi8 (__mmask16 __U, __m128i __A, __m128i __I,
+            __m128i __B)
+{
+  return (__m128i) __builtin_ia32_vpermt2varqi128_maskz ((__v16qi) __I
+               /* idx */ ,
+               (__v16qi) __A,
+               (__v16qi) __B,
+               (__mmask16)
+               __U);
+}
+
+static __inline__ __m256i __DEFAULT_FN_ATTRS
+_mm256_permutex2var_epi8 (__m256i __A, __m256i __I, __m256i __B)
+{
+  return (__m256i) __builtin_ia32_vpermt2varqi256_mask ((__v32qi) __I
+              /* idx */ ,
+              (__v32qi) __A,
+              (__v32qi) __B,
+              (__mmask32) -
+              1);
+}
+
+static __inline__ __m256i __DEFAULT_FN_ATTRS
+_mm256_mask_permutex2var_epi8 (__m256i __A, __mmask32 __U,
+        __m256i __I, __m256i __B)
+{
+  return (__m256i) __builtin_ia32_vpermt2varqi256_mask ((__v32qi) __I
+              /* idx */ ,
+              (__v32qi) __A,
+              (__v32qi) __B,
+              (__mmask32)
+              __U);
+}
+
+static __inline__ __m256i __DEFAULT_FN_ATTRS
+_mm256_maskz_permutex2var_epi8 (__mmask32 __U, __m256i __A,
+         __m256i __I, __m256i __B)
+{
+  return (__m256i) __builtin_ia32_vpermt2varqi256_maskz ((__v32qi) __I
+               /* idx */ ,
+               (__v32qi) __A,
+               (__v32qi) __B,
+               (__mmask32)
+               __U);
+}
+
+static __inline__ __m128i __DEFAULT_FN_ATTRS
+_mm_permutexvar_epi8 (__m128i __A, __m128i __B)
+{
+  return (__m128i) __builtin_ia32_permvarqi128_mask ((__v16qi) __B,
+                 (__v16qi) __A,
+                 (__v16qi) _mm_undefined_si128 (),
+                 (__mmask16) -1);
+}
+
+static __inline__ __m128i __DEFAULT_FN_ATTRS
+_mm_maskz_permutexvar_epi8 (__mmask16 __M, __m128i __A, __m128i __B)
+{
+  return (__m128i) __builtin_ia32_permvarqi128_mask ((__v16qi) __B,
+                 (__v16qi) __A,
+                 (__v16qi) _mm_setzero_si128 (),
+                 (__mmask16) __M);
+}
+
+static __inline__ __m128i __DEFAULT_FN_ATTRS
+_mm_mask_permutexvar_epi8 (__m128i __W, __mmask16 __M, __m128i __A,
+          __m128i __B)
+{
+  return (__m128i) __builtin_ia32_permvarqi128_mask ((__v16qi) __B,
+                 (__v16qi) __A,
+                 (__v16qi) __W,
+                 (__mmask16) __M);
+}
+
+static __inline__ __m256i __DEFAULT_FN_ATTRS
+_mm256_permutexvar_epi8 (__m256i __A, __m256i __B)
+{
+  return (__m256i) __builtin_ia32_permvarqi256_mask ((__v32qi) __B,
+                 (__v32qi) __A,
+                 (__v32qi) _mm256_undefined_si256 (),
+                 (__mmask32) -1);
+}
+
+static __inline__ __m256i __DEFAULT_FN_ATTRS
+_mm256_maskz_permutexvar_epi8 (__mmask32 __M, __m256i __A,
+        __m256i __B)
+{
+  return (__m256i) __builtin_ia32_permvarqi256_mask ((__v32qi) __B,
+                 (__v32qi) __A,
+                 (__v32qi) _mm256_setzero_si256 (),
+                 (__mmask32) __M);
+}
+
+static __inline__ __m256i __DEFAULT_FN_ATTRS
+_mm256_mask_permutexvar_epi8 (__m256i __W, __mmask32 __M, __m256i __A,
+             __m256i __B)
+{
+  return (__m256i) __builtin_ia32_permvarqi256_mask ((__v32qi) __B,
+                 (__v32qi) __A,
+                 (__v32qi) __W,
+                 (__mmask32) __M);
+}
+
+#undef __DEFAULT_FN_ATTRS
+
+#endif