From 4b9947e2e76e1e7b1ec0b2fdb9609b2850a20812 Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper@intel.com>
Date: Fri, 11 Oct 2019 04:02:04 +0000
Subject: [PATCH] [X86] Add test case for trunc_packus_v16i32_v16i8_store to
 min-legal-vector-width.ll

We aren't folding the vpmovuswb into the store.

llvm-svn: 374507
---
 llvm/test/CodeGen/X86/min-legal-vector-width.ll | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/llvm/test/CodeGen/X86/min-legal-vector-width.ll b/llvm/test/CodeGen/X86/min-legal-vector-width.ll
index 91ece95..95e6d3e 100644
--- a/llvm/test/CodeGen/X86/min-legal-vector-width.ll
+++ b/llvm/test/CodeGen/X86/min-legal-vector-width.ll
@@ -1080,7 +1080,7 @@ define void @vselect_split_v16i16_setcc(<16 x i16> %s, <16 x i16> %t, <16 x i32>
   ret void
 }
 
-define <16 x i8> @trunc_packus_v16i32_v16i8(<16 x i32>* %p, <16 x i8>* %q) "min-legal-vector-width"="256" {
+define <16 x i8> @trunc_packus_v16i32_v16i8(<16 x i32>* %p) "min-legal-vector-width"="256" {
 ; CHECK-LABEL: trunc_packus_v16i32_v16i8:
 ; CHECK:       # %bb.0:
 ; CHECK-NEXT:    vmovdqa (%rdi), %ymm0
@@ -1098,6 +1098,26 @@ define <16 x i8> @trunc_packus_v16i32_v16i8(<16 x i32>* %p, <16 x i8>* %q) "min-
   ret <16 x i8> %f
 }
 
+define void @trunc_packus_v16i32_v16i8_store(<16 x i32>* %p, <16 x i8>* %q) "min-legal-vector-width"="256" {
+; CHECK-LABEL: trunc_packus_v16i32_v16i8_store:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    vmovdqa (%rdi), %ymm0
+; CHECK-NEXT:    vpackusdw 32(%rdi), %ymm0, %ymm0
+; CHECK-NEXT:    vpermq {{.*#+}} ymm0 = ymm0[0,2,1,3]
+; CHECK-NEXT:    vpmovuswb %ymm0, %xmm0
+; CHECK-NEXT:    vmovdqa %xmm0, (%rsi)
+; CHECK-NEXT:    vzeroupper
+; CHECK-NEXT:    retq
+  %a = load <16 x i32>, <16 x i32>* %p
+  %b = icmp slt <16 x i32> %a, <i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255>
+  %c = select <16 x i1> %b, <16 x i32> %a, <16 x i32> <i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255, i32 255>
+  %d = icmp sgt <16 x i32> %c, zeroinitializer
+  %e = select <16 x i1> %d, <16 x i32> %c, <16 x i32> zeroinitializer
+  %f = trunc <16 x i32> %e to <16 x i8>
+  store <16 x i8> %f, <16 x i8>* %q
+  ret void
+}
+
 define <32 x i8> @trunc_packus_v32i32_v32i8(<32 x i32>* %p) "min-legal-vector-width"="256" {
 ; CHECK-LABEL: trunc_packus_v32i32_v32i8:
 ; CHECK:       # %bb.0:
-- 
2.7.4