From 78b0ce03e9ee069ffec981f46c69436363a3b473 Mon Sep 17 00:00:00 2001
From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Sat, 13 May 2017 21:50:18 +0000
Subject: [X86][SSE] Test showing missing EXTRACT_SUBVECTOR/CONCAT_VECTORS
 demandedelts support in ComputeNumSignBits

llvm-svn: 302994
---
 llvm/test/CodeGen/X86/known-signbits-vector.ll | 55 ++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

(limited to 'llvm/test')

diff --git a/llvm/test/CodeGen/X86/known-signbits-vector.ll b/llvm/test/CodeGen/X86/known-signbits-vector.ll
index 60c466166b4..c8359097f65 100644
--- a/llvm/test/CodeGen/X86/known-signbits-vector.ll
+++ b/llvm/test/CodeGen/X86/known-signbits-vector.ll
@@ -169,3 +169,58 @@ define <4 x double> @signbits_sext_shuffle_sitofp(<4 x i32> %a0, <4 x i64> %a1)
   %3 = sitofp <4 x i64> %2 to <4 x double>
   ret <4 x double> %3
 }
+
+define <2 x double> @signbits_ashr_concat_ashr_extract_sitofp(<2 x i64> %a0, <4 x i64> %a1) nounwind {
+; X32-LABEL: signbits_ashr_concat_ashr_extract_sitofp:
+; X32:       # BB#0:
+; X32-NEXT:    pushl %ebp
+; X32-NEXT:    movl %esp, %ebp
+; X32-NEXT:    andl $-8, %esp
+; X32-NEXT:    subl $32, %esp
+; X32-NEXT:    vpsrad $16, %xmm0, %xmm1
+; X32-NEXT:    vpsrlq $16, %xmm0, %xmm0
+; X32-NEXT:    vpblendw {{.*#+}} xmm0 = xmm0[0,1],xmm1[2,3],xmm0[4,5],xmm1[6,7]
+; X32-NEXT:    vmovaps {{.*#+}} ymm1 = [16,0,16,0,16,0,16,0]
+; X32-NEXT:    vextractf128 $1, %ymm1, %xmm1
+; X32-NEXT:    vmovdqa {{.*#+}} xmm2 = [0,2147483648,0,2147483648]
+; X32-NEXT:    vpsrlq %xmm1, %xmm2, %xmm2
+; X32-NEXT:    vpsrlq %xmm1, %xmm0, %xmm0
+; X32-NEXT:    vpxor %xmm2, %xmm0, %xmm0
+; X32-NEXT:    vpsubq %xmm2, %xmm0, %xmm0
+; X32-NEXT:    vmovq {{.*#+}} xmm1 = xmm0[0],zero
+; X32-NEXT:    vmovq %xmm1, {{[0-9]+}}(%esp)
+; X32-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[2,3,0,1]
+; X32-NEXT:    vmovq %xmm0, {{[0-9]+}}(%esp)
+; X32-NEXT:    fildll {{[0-9]+}}(%esp)
+; X32-NEXT:    fstpl {{[0-9]+}}(%esp)
+; X32-NEXT:    fildll {{[0-9]+}}(%esp)
+; X32-NEXT:    fstpl (%esp)
+; X32-NEXT:    vmovsd {{.*#+}} xmm0 = mem[0],zero
+; X32-NEXT:    vmovhpd {{.*#+}} xmm0 = xmm0[0],mem[0]
+; X32-NEXT:    movl %ebp, %esp
+; X32-NEXT:    popl %ebp
+; X32-NEXT:    vzeroupper
+; X32-NEXT:    retl
+;
+; X64-LABEL: signbits_ashr_concat_ashr_extract_sitofp:
+; X64:       # BB#0:
+; X64-NEXT:    vpsrad $16, %xmm0, %xmm1
+; X64-NEXT:    vpsrlq $16, %xmm0, %xmm0
+; X64-NEXT:    vpblendw {{.*#+}} xmm0 = xmm0[0,1],xmm1[2,3],xmm0[4,5],xmm1[6,7]
+; X64-NEXT:    vpsrad $16, %xmm0, %xmm1
+; X64-NEXT:    vpsrlq $16, %xmm0, %xmm0
+; X64-NEXT:    vpblendw {{.*#+}} xmm0 = xmm0[0,1],xmm1[2,3],xmm0[4,5],xmm1[6,7]
+; X64-NEXT:    vpextrq $1, %xmm0, %rax
+; X64-NEXT:    vcvtsi2sdq %rax, %xmm2, %xmm1
+; X64-NEXT:    vmovq %xmm0, %rax
+; X64-NEXT:    vcvtsi2sdq %rax, %xmm2, %xmm0
+; X64-NEXT:    vunpcklpd {{.*#+}} xmm0 = xmm0[0],xmm1[0]
+; X64-NEXT:    retq
+  %1 = ashr <2 x i64> %a0, <i64 16, i64 16>
+  %2 = shufflevector <2 x i64> %1, <2 x i64> undef, <4 x i32> <i32 0, i32 1, i32 undef, i32 undef>
+  %3 = shufflevector <4 x i64> %a1, <4 x i64> %2, <4 x i32> <i32 0, i32 1, i32 4, i32 5>
+  %4 = ashr <4 x i64> %3, <i64 16, i64 16, i64 16, i64 16>
+  %5 = shufflevector <4 x i64> %4, <4 x i64> undef, <2 x i32> <i32 2, i32 3>
+  %6 = sitofp <2 x i64> %5 to <2 x double>
+  ret <2 x double> %6
+}
-- 
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