Index: include/clang/Basic/BuiltinsX86.def
===================================================================
--- include/clang/Basic/BuiltinsX86.def
+++ include/clang/Basic/BuiltinsX86.def
@@ -1691,6 +1691,7 @@
 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_cvtps2pd512_mask, "V8dV8fV8dUcIi","","avx512f")
 
 #undef BUILTIN
 #undef TARGET_BUILTIN
Index: lib/Headers/avx512fintrin.h
===================================================================
--- lib/Headers/avx512fintrin.h
+++ lib/Headers/avx512fintrin.h
@@ -3602,6 +3602,55 @@
               (__mmask8)( __U));\
 })
 
+#define _mm512_cvt_roundps_pd( __A, __R) __extension__ ({ \
+__builtin_ia32_cvtps2pd512_mask ((__v8sf)( __A),\
+                (__v8df)\
+                _mm512_undefined_pd (),\
+                (__mmask8) -1,( __R));\
+})
+
+#define _mm512_mask_cvt_roundps_pd( __W, __U, __A, __R) __extension__ ({ \
+__builtin_ia32_cvtps2pd512_mask ((__v8sf)( __A),\
+                (__v8df)( __W),\
+                (__mmask8)( __U),( __R));\
+})
+
+#define _mm512_maskz_cvt_roundps_pd( __U, __A, __R) __extension__ ({ \
+__builtin_ia32_cvtps2pd512_mask ((__v8sf)( __A),\
+                (__v8df)\
+                _mm512_setzero_pd (),\
+                (__mmask8)( __U),( __R));\
+})
+
+static __inline__ __m512d __DEFAULT_FN_ATTRS
+_mm512_cvtps_pd (__m256 __A)
+{
+  return (__m512d) __builtin_ia32_cvtps2pd512_mask ((__v8sf) __A,
+                (__v8df)
+                _mm512_undefined_pd (),
+                (__mmask8) -1,
+                _MM_FROUND_CUR_DIRECTION);
+}
+
+static __inline__ __m512d __DEFAULT_FN_ATTRS
+_mm512_mask_cvtps_pd (__m512d __W, __mmask8 __U, __m256 __A)
+{
+  return (__m512d) __builtin_ia32_cvtps2pd512_mask ((__v8sf) __A,
+                (__v8df) __W,
+                (__mmask8) __U,
+                _MM_FROUND_CUR_DIRECTION);
+}
+
+static __inline__ __m512d __DEFAULT_FN_ATTRS
+_mm512_maskz_cvtps_pd (__mmask8 __U, __m256 __A)
+{
+  return (__m512d) __builtin_ia32_cvtps2pd512_mask ((__v8sf) __A,
+                (__v8df)
+                _mm512_setzero_pd (),
+                (__mmask8) __U,
+                _MM_FROUND_CUR_DIRECTION);
+}
+
 #undef __DEFAULT_FN_ATTRS
 
 #endif // __AVX512FINTRIN_H
Index: test/CodeGen/avx512f-builtins.c
===================================================================
--- test/CodeGen/avx512f-builtins.c
+++ test/CodeGen/avx512f-builtins.c
@@ -2298,3 +2298,38 @@
   return _mm512_maskz_srli_epi64(__U, __A, 5); 
 }
 
+__m512d test_mm512_cvt_roundps_pd(__m256 __A) {
+  // CHECK-LABEL: @test_mm512_cvt_roundps_pd
+  // CHECK: @llvm.x86.avx512.mask.cvtps2pd.512
+  return _mm512_cvt_roundps_pd(__A, _MM_FROUND_CUR_DIRECTION); 
+}
+
+__m512d test_mm512_mask_cvt_roundps_pd(__m512d __W, __mmask8 __U, __m256 __A) {
+  // CHECK-LABEL: @test_mm512_mask_cvt_roundps_pd
+  // CHECK: @llvm.x86.avx512.mask.cvtps2pd.512
+  return _mm512_mask_cvt_roundps_pd(__W, __U, __A, _MM_FROUND_CUR_DIRECTION); 
+}
+
+__m512d test_mm512_maskz_cvt_roundps_pd(__mmask8 __U, __m256 __A) {
+  // CHECK-LABEL: @test_mm512_maskz_cvt_roundps_pd
+  // CHECK: @llvm.x86.avx512.mask.cvtps2pd.512
+  return _mm512_maskz_cvt_roundps_pd(__U, __A, _MM_FROUND_CUR_DIRECTION); 
+}
+
+__m512d test_mm512_cvtps_pd(__m256 __A) {
+  // CHECK-LABEL: @test_mm512_cvtps_pd
+  // CHECK: @llvm.x86.avx512.mask.cvtps2pd.512
+  return _mm512_cvtps_pd(__A); 
+}
+
+__m512d test_mm512_mask_cvtps_pd(__m512d __W, __mmask8 __U, __m256 __A) {
+  // CHECK-LABEL: @test_mm512_mask_cvtps_pd
+  // CHECK: @llvm.x86.avx512.mask.cvtps2pd.512
+  return _mm512_mask_cvtps_pd(__W, __U, __A); 
+}
+
+__m512d test_mm512_maskz_cvtps_pd(__mmask8 __U, __m256 __A) {
+  // CHECK-LABEL: @test_mm512_maskz_cvtps_pd
+  // CHECK: @llvm.x86.avx512.mask.cvtps2pd.512
+  return _mm512_maskz_cvtps_pd(__U, __A); 
+}