Index: include/clang/Basic/BuiltinsX86.def
===================================================================
--- include/clang/Basic/BuiltinsX86.def
+++ include/clang/Basic/BuiltinsX86.def
@@ -1691,6 +1691,9 @@
 TARGET_BUILTIN(__builtin_ia32_psraw256_mask, "V16sV16sV8sV16sUs","","avx512bw,avx512vl")
 TARGET_BUILTIN(__builtin_ia32_psrawi128_mask, "V8sV8sIiV8sUc","","avx512bw,avx512vl")
 TARGET_BUILTIN(__builtin_ia32_psrawi256_mask, "V16sV16sIiV16sUs","","avx512bw,avx512vl")
+TARGET_BUILTIN(__builtin_ia32_movddup512_mask, "V8dV8dV8dUc","","avx512f")
+TARGET_BUILTIN(__builtin_ia32_movddup128_mask, "V2dV2dV2dUc","","avx512vl")
+TARGET_BUILTIN(__builtin_ia32_movddup256_mask, "V4dV4dV4dUc","","avx512vl")
 
 #undef BUILTIN
 #undef TARGET_BUILTIN
Index: lib/Headers/avx512fintrin.h
===================================================================
--- lib/Headers/avx512fintrin.h
+++ lib/Headers/avx512fintrin.h
@@ -3602,6 +3602,34 @@
               (__mmask8)( __U));\
 })
 
+
+static __inline__ __m512d __DEFAULT_FN_ATTRS
+_mm512_movedup_pd (__m512d __A)
+{
+  return (__m512d) __builtin_ia32_movddup512_mask ((__v8df) __A,
+               (__v8df)
+               _mm512_undefined_pd (),
+               (__mmask8) -1);
+}
+
+static __inline__ __m512d __DEFAULT_FN_ATTRS
+_mm512_mask_movedup_pd (__m512d __W, __mmask8 __U, __m512d __A)
+{
+  return (__m512d) __builtin_ia32_movddup512_mask ((__v8df) __A,
+               (__v8df) __W,
+               (__mmask8) __U);
+}
+
+static __inline__ __m512d __DEFAULT_FN_ATTRS
+_mm512_maskz_movedup_pd (__mmask8 __U, __m512d __A)
+{
+  return (__m512d) __builtin_ia32_movddup512_mask ((__v8df) __A,
+               (__v8df)
+               _mm512_setzero_pd (),
+               (__mmask8) __U);
+}
+
+
 #undef __DEFAULT_FN_ATTRS
 
 #endif // __AVX512FINTRIN_H
Index: lib/Headers/avx512vlintrin.h
===================================================================
--- lib/Headers/avx512vlintrin.h
+++ lib/Headers/avx512vlintrin.h
@@ -5871,6 +5871,43 @@
               _mm256_setzero_si256 (),
               (__mmask8) __U);
 }
+
+
+static __inline__ __m128d __DEFAULT_FN_ATTRS
+_mm_mask_movedup_pd (__m128d __W, __mmask8 __U, __m128d __A)
+{
+  return (__m128d) __builtin_ia32_movddup128_mask ((__v2df) __A,
+               (__v2df) __W,
+               (__mmask8) __U);
+}
+
+static __inline__ __m128d __DEFAULT_FN_ATTRS
+_mm_maskz_movedup_pd (__mmask8 __U, __m128d __A)
+{
+  return (__m128d) __builtin_ia32_movddup128_mask ((__v2df) __A,
+               (__v2df)
+               _mm_setzero_pd (),
+               (__mmask8) __U);
+}
+
+static __inline__ __m256d __DEFAULT_FN_ATTRS
+_mm256_mask_movedup_pd (__m256d __W, __mmask8 __U, __m256d __A)
+{
+  return (__m256d) __builtin_ia32_movddup256_mask ((__v4df) __A,
+               (__v4df) __W,
+               (__mmask8) __U);
+}
+
+static __inline__ __m256d __DEFAULT_FN_ATTRS
+_mm256_maskz_movedup_pd (__mmask8 __U, __m256d __A)
+{
+  return (__m256d) __builtin_ia32_movddup256_mask ((__v4df) __A,
+               (__v4df)
+               _mm256_setzero_pd (),
+               (__mmask8) __U);
+}
+
+
 #undef __DEFAULT_FN_ATTRS
 #undef __DEFAULT_FN_ATTRS_BOTH
 
Index: test/CodeGen/avx512f-builtins.c
===================================================================
--- test/CodeGen/avx512f-builtins.c
+++ test/CodeGen/avx512f-builtins.c
@@ -2298,3 +2298,22 @@
   return _mm512_maskz_srli_epi64(__U, __A, 5); 
 }
 
+__m512d test_mm512_movedup_pd(__m512d __A) {
+  // CHECK-LABEL: @test_mm512_movedup_pd
+  // CHECK: @llvm.x86.avx512.mask.movddup.512
+  return _mm512_movedup_pd(__A); 
+}
+
+__m512d test_mm512_mask_movedup_pd(__m512d __W, __mmask8 __U, __m512d __A) {
+  // CHECK-LABEL: @test_mm512_mask_movedup_pd
+  // CHECK: @llvm.x86.avx512.mask.movddup.512
+  return _mm512_mask_movedup_pd(__W, __U, __A); 
+}
+
+__m512d test_mm512_maskz_movedup_pd(__mmask8 __U, __m512d __A) {
+  // CHECK-LABEL: @test_mm512_maskz_movedup_pd
+  // CHECK: @llvm.x86.avx512.mask.movddup.512
+  return _mm512_maskz_movedup_pd(__U, __A); 
+}
+
+
Index: test/CodeGen/avx512vl-builtins.c
===================================================================
--- test/CodeGen/avx512vl-builtins.c
+++ test/CodeGen/avx512vl-builtins.c
@@ -3936,3 +3936,27 @@
   return _mm256_maskz_srav_epi64(__U, __X, __Y); 
 }
 
+__m128d test_mm_mask_movedup_pd(__m128d __W, __mmask8 __U, __m128d __A) {
+  // CHECK-LABEL: @test_mm_mask_movedup_pd
+  // CHECK: @llvm.x86.avx512.mask.movddup.128
+  return _mm_mask_movedup_pd(__W, __U, __A); 
+}
+
+__m128d test_mm_maskz_movedup_pd(__mmask8 __U, __m128d __A) {
+  // CHECK-LABEL: @test_mm_maskz_movedup_pd
+  // CHECK: @llvm.x86.avx512.mask.movddup.128
+  return _mm_maskz_movedup_pd(__U, __A); 
+}
+
+__m256d test_mm256_mask_movedup_pd(__m256d __W, __mmask8 __U, __m256d __A) {
+  // CHECK-LABEL: @test_mm256_mask_movedup_pd
+  // CHECK: @llvm.x86.avx512.mask.movddup.256
+  return _mm256_mask_movedup_pd(__W, __U, __A); 
+}
+
+__m256d test_mm256_maskz_movedup_pd(__mmask8 __U, __m256d __A) {
+  // CHECK-LABEL: @test_mm256_maskz_movedup_pd
+  // CHECK: @llvm.x86.avx512.mask.movddup.256
+  return _mm256_maskz_movedup_pd(__U, __A); 
+}
+