From 39936dcadb12b37f765927db6413aa0b784de2ec Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper@gmail.com>
Date: Sat, 11 Mar 2017 18:26:00 +0000
Subject: [PATCH] [X86] Add avx2 gather tests cases that show a failure to
 remove zeroing of the source when the mask is all ones.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297564 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/X86/avx2-gather.ll | 52 +++++++++++++++++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/test/CodeGen/X86/avx2-gather.ll b/test/CodeGen/X86/avx2-gather.ll
index cd8c354e996..662d6c36f46 100644
--- a/test/CodeGen/X86/avx2-gather.ll
+++ b/test/CodeGen/X86/avx2-gather.ll
@@ -85,3 +85,55 @@ define <4 x double> @test_x86_avx2_gather_d_pd_256(i8* %a1, <4 x i32> %idx, <4 x
                             i8* %a1, <4 x i32> %idx, <4 x double> %mask, i8 8) ;
   ret <4 x double> %res
 }
+
+define <2 x i64> @test_mm_i32gather_epi32(i32 *%a0, <2 x i64> %a1) {
+; X32-LABEL: test_mm_i32gather_epi32:
+; X32:       ## BB#0:
+; X32-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X32-NEXT:    vpcmpeqd %xmm2, %xmm2, %xmm2
+; X32-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; X32-NEXT:    vpgatherdd %xmm2, (%eax,%xmm0,2), %xmm1
+; X32-NEXT:    vmovdqa %xmm1, %xmm0
+; X32-NEXT:    retl
+;
+; X64-LABEL: test_mm_i32gather_epi32:
+; X64:       ## BB#0:
+; X64-NEXT:    vpcmpeqd %xmm2, %xmm2, %xmm2
+; X64-NEXT:    vpxor %xmm1, %xmm1, %xmm1
+; X64-NEXT:    vpgatherdd %xmm2, (%rdi,%xmm0,2), %xmm1
+; X64-NEXT:    vmovdqa %xmm1, %xmm0
+; X64-NEXT:    retq
+  %arg0 = bitcast i32 *%a0 to i8*
+  %arg1 = bitcast <2 x i64> %a1 to <4 x i32>
+  %mask = bitcast <2 x i64> <i64 -1, i64 -1> to <4 x i32>
+  %call = call <4 x i32> @llvm.x86.avx2.gather.d.d(<4 x i32> zeroinitializer, i8* %arg0, <4 x i32> %arg1, <4 x i32> %mask, i8 2)
+  %bc = bitcast <4 x i32> %call to <2 x i64>
+  ret <2 x i64> %bc
+}
+declare <4 x i32> @llvm.x86.avx2.gather.d.d(<4 x i32>, i8*, <4 x i32>, <4 x i32>, i8) nounwind readonly
+
+define <2 x double> @test_mm_i32gather_pd(double *%a0, <2 x i64> %a1) {
+; X32-LABEL: test_mm_i32gather_pd:
+; X32:       ## BB#0:
+; X32-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X32-NEXT:    vxorpd %xmm1, %xmm1, %xmm1
+; X32-NEXT:    vpcmpeqd %xmm2, %xmm2, %xmm2
+; X32-NEXT:    vgatherdpd %xmm2, (%eax,%xmm0,2), %xmm1
+; X32-NEXT:    vmovapd %xmm1, %xmm0
+; X32-NEXT:    retl
+;
+; X64-LABEL: test_mm_i32gather_pd:
+; X64:       ## BB#0:
+; X64-NEXT:    vxorpd %xmm1, %xmm1, %xmm1
+; X64-NEXT:    vpcmpeqd %xmm2, %xmm2, %xmm2
+; X64-NEXT:    vgatherdpd %xmm2, (%rdi,%xmm0,2), %xmm1
+; X64-NEXT:    vmovapd %xmm1, %xmm0
+; X64-NEXT:    retq
+  %arg0 = bitcast double *%a0 to i8*
+  %arg1 = bitcast <2 x i64> %a1 to <4 x i32>
+  %cmp = fcmp oeq <2 x double> zeroinitializer, zeroinitializer
+  %sext = sext <2 x i1> %cmp to <2 x i64>
+  %mask = bitcast <2 x i64> %sext to <2 x double>
+  %res = call <2 x double> @llvm.x86.avx2.gather.d.pd(<2 x double> zeroinitializer, i8* %arg0, <4 x i32> %arg1, <2 x double> %mask, i8 2)
+  ret <2 x double> %res
+}
-- 
2.50.1