From d026e5020bf3397321cce0ba8746b61006d30a8b Mon Sep 17 00:00:00 2001
From: Elena Demikhovsky <elena.demikhovsky@intel.com>
Date: Mon, 18 May 2015 07:06:23 +0000
Subject: [PATCH] AVX-512: Added patterns for scalar-to-vector broadcast

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237558 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/X86InstrAVX512.td      | 10 ++++++++++
 test/CodeGen/X86/avx512-vbroadcast.ll | 28 +++++++++++++++++++++++++++
 2 files changed, 38 insertions(+)

diff --git a/lib/Target/X86/X86InstrAVX512.td b/lib/Target/X86/X86InstrAVX512.td
index 812b13ab1ba..1ce25ae685b 100644
--- a/lib/Target/X86/X86InstrAVX512.td
+++ b/lib/Target/X86/X86InstrAVX512.td
@@ -941,13 +941,23 @@ def : Pat<(v8i64 (int_x86_avx512_pbroadcastq_512 (v2i64 VR128X:$src))),
 
 def : Pat<(v16f32 (X86VBroadcast (v16f32 VR512:$src))),
           (VBROADCASTSSZr (EXTRACT_SUBREG (v16f32 VR512:$src), sub_xmm))>;
+def : Pat<(v16f32 (X86VBroadcast (v8f32 VR256X:$src))),
+          (VBROADCASTSSZr (EXTRACT_SUBREG (v8f32 VR256X:$src), sub_xmm))>;
+
 def : Pat<(v8f64 (X86VBroadcast (v8f64 VR512:$src))),
           (VBROADCASTSDZr (EXTRACT_SUBREG (v8f64 VR512:$src), sub_xmm))>;
+def : Pat<(v8f64 (X86VBroadcast (v4f64 VR256X:$src))),
+          (VBROADCASTSDZr (EXTRACT_SUBREG (v4f64 VR256X:$src), sub_xmm))>;
 
 def : Pat<(v16i32 (X86VBroadcast (v16i32 VR512:$src))),
           (VPBROADCASTDZrr (EXTRACT_SUBREG (v16i32 VR512:$src), sub_xmm))>;
+def : Pat<(v16i32 (X86VBroadcast (v8i32 VR256X:$src))),
+          (VPBROADCASTDZrr (EXTRACT_SUBREG (v8i32 VR256X:$src), sub_xmm))>;
+
 def : Pat<(v8i64 (X86VBroadcast (v8i64 VR512:$src))),
           (VPBROADCASTQZrr (EXTRACT_SUBREG (v8i64 VR512:$src), sub_xmm))>;
+def : Pat<(v8i64 (X86VBroadcast (v4i64 VR256X:$src))),
+          (VPBROADCASTQZrr (EXTRACT_SUBREG (v4i64 VR256X:$src), sub_xmm))>;
 
 def : Pat<(v16f32 (int_x86_avx512_vbroadcast_ss_ps_512 (v4f32 VR128X:$src))),
           (VBROADCASTSSZr VR128X:$src)>;
diff --git a/test/CodeGen/X86/avx512-vbroadcast.ll b/test/CodeGen/X86/avx512-vbroadcast.ll
index cc81d682079..854f1019f0f 100644
--- a/test/CodeGen/X86/avx512-vbroadcast.ll
+++ b/test/CodeGen/X86/avx512-vbroadcast.ll
@@ -300,3 +300,31 @@ entry:
   %vecinit7.i = insertelement <8 x double> %vecinit6.i, double %0, i32 7
   ret <8 x double> %vecinit7.i
 }
+
+; CHECK-LABEL: test1
+; CHECK: vbroadcastss
+define <16 x float> @test1(<8 x float>%a)  {
+  %res = shufflevector <8 x float> %a, <8 x float> undef, <16 x i32> zeroinitializer
+  ret <16 x float>%res
+}
+
+; CHECK-LABEL: test2
+; CHECK: vbroadcastsd
+define <8 x double> @test2(<4 x double>%a)  {
+  %res = shufflevector <4 x double> %a, <4 x double> undef, <8 x i32> zeroinitializer
+  ret <8 x double>%res
+}
+
+; CHECK-LABEL: test3
+; CHECK: vpbroadcastd
+define <16 x i32> @test3(<8 x i32>%a)  {
+  %res = shufflevector <8 x i32> %a, <8 x i32> undef, <16 x i32> zeroinitializer
+  ret <16 x i32>%res
+}
+
+; CHECK-LABEL: test4
+; CHECK: vpbroadcastq
+define <8 x i64> @test4(<4 x i64>%a)  {
+  %res = shufflevector <4 x i64> %a, <4 x i64> undef, <8 x i32> zeroinitializer
+  ret <8 x i64>%res
+}
-- 
2.34.1