From 22c47e606a07e91336d3408477fde62b61aee1c4 Mon Sep 17 00:00:00 2001
From: Michael Zuckerman <Michael.zuckerman@intel.com>
Date: Thu, 26 May 2016 14:32:11 +0000
Subject: [PATCH] Adding missing _mm512_castsi512_si256 intrinsic.

llvm-svn: 270851
---
 clang/lib/Headers/avx512fintrin.h     | 6 ++++++
 clang/test/CodeGen/avx512f-builtins.c | 7 +++++++
 2 files changed, 13 insertions(+)

diff --git a/clang/lib/Headers/avx512fintrin.h b/clang/lib/Headers/avx512fintrin.h
index a9d2af378df5..dd5e0e159979 100644
--- a/clang/lib/Headers/avx512fintrin.h
+++ b/clang/lib/Headers/avx512fintrin.h
@@ -445,6 +445,12 @@ _mm512_castsi512_si128 (__m512i __A)
   return (__m128i)__builtin_shufflevector(__A, __A , 0, 1);
 }
 
+static __inline __m256i __DEFAULT_FN_ATTRS
+_mm512_castsi512_si256 (__m512i __A)
+{
+  return (__m256i)__builtin_shufflevector(__A, __A , 0, 1, 2, 3);
+}
+
 /* Bitwise operators */
 static __inline__ __m512i __DEFAULT_FN_ATTRS
 _mm512_and_epi32(__m512i __a, __m512i __b)
diff --git a/clang/test/CodeGen/avx512f-builtins.c b/clang/test/CodeGen/avx512f-builtins.c
index 553dc147da1f..8e5813fb3483 100644
--- a/clang/test/CodeGen/avx512f-builtins.c
+++ b/clang/test/CodeGen/avx512f-builtins.c
@@ -6041,6 +6041,13 @@ __m128i test_mm512_castsi512_si128 (__m512i __A)
   return _mm512_castsi512_si128 (__A);
 }
 
+__m256i test_mm512_castsi512_si256 (__m512i __A)
+{
+  // CHECK-LABEL: @test_mm512_castsi512_si256 
+  // CHECK: shufflevector <8 x i64> %{{.}}, <8 x i64> %{{.}}, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
+  return _mm512_castsi512_si256 (__A);
+}
+
 __m128 test_mm_cvt_roundsd_ss(__m128 __A, __m128d __B) {
   // CHECK-LABEL: @test_mm_cvt_roundsd_ss
   // CHECK: @llvm.x86.avx512.mask.cvtsd2ss.round