From 7afaa0099b907842b281c25c2a57937a2c307d3b Mon Sep 17 00:00:00 2001
From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Mon, 13 Jan 2020 15:49:13 +0000
Subject: [PATCH] [X86][SSE] Add sitofp(ashr(x,y)) test case with non-uniform
 shift value

---
 llvm/test/CodeGen/X86/known-signbits-vector.ll | 94 ++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)

diff --git a/llvm/test/CodeGen/X86/known-signbits-vector.ll b/llvm/test/CodeGen/X86/known-signbits-vector.ll
index 93439a0..97cb432 100644
--- a/llvm/test/CodeGen/X86/known-signbits-vector.ll
+++ b/llvm/test/CodeGen/X86/known-signbits-vector.ll
@@ -55,6 +55,100 @@ define <4 x float> @signbits_sext_v4i64_sitofp_v4f32(i8 signext %a0, i16 signext
   ret <4 x float> %9
 }
 
+define <4 x double> @signbits_ashr_sitofp(<4 x i64> %a0) nounwind {
+; X86-LABEL: signbits_ashr_sitofp:
+; X86:       # %bb.0:
+; X86-NEXT:    pushl %ebp
+; X86-NEXT:    movl %esp, %ebp
+; X86-NEXT:    andl $-8, %esp
+; X86-NEXT:    subl $64, %esp
+; X86-NEXT:    vextractf128 $1, %ymm0, %xmm1
+; X86-NEXT:    vpsrlq $36, %xmm1, %xmm2
+; X86-NEXT:    vpsrlq $35, %xmm1, %xmm1
+; X86-NEXT:    vpblendw {{.*#+}} xmm1 = xmm1[0,1,2,3],xmm2[4,5,6,7]
+; X86-NEXT:    vmovdqa {{.*#+}} xmm2 = [268435456,0,134217728,0]
+; X86-NEXT:    vpxor %xmm2, %xmm1, %xmm1
+; X86-NEXT:    vpsubq %xmm2, %xmm1, %xmm1
+; X86-NEXT:    vpsrlq $34, %xmm0, %xmm2
+; X86-NEXT:    vpsrlq $33, %xmm0, %xmm0
+; X86-NEXT:    vpblendw {{.*#+}} xmm0 = xmm0[0,1,2,3],xmm2[4,5,6,7]
+; X86-NEXT:    vmovdqa {{.*#+}} xmm2 = [1073741824,0,536870912,0]
+; X86-NEXT:    vpxor %xmm2, %xmm0, %xmm0
+; X86-NEXT:    vpsubq %xmm2, %xmm0, %xmm0
+; X86-NEXT:    vmovq %xmm0, {{[0-9]+}}(%esp)
+; X86-NEXT:    vpshufd {{.*#+}} xmm0 = xmm0[2,3,0,1]
+; X86-NEXT:    vmovq %xmm0, {{[0-9]+}}(%esp)
+; X86-NEXT:    vmovq %xmm1, {{[0-9]+}}(%esp)
+; X86-NEXT:    vpshufd {{.*#+}} xmm0 = xmm1[2,3,0,1]
+; X86-NEXT:    vmovq %xmm0, {{[0-9]+}}(%esp)
+; X86-NEXT:    fildll {{[0-9]+}}(%esp)
+; X86-NEXT:    fstpl {{[0-9]+}}(%esp)
+; X86-NEXT:    fildll {{[0-9]+}}(%esp)
+; X86-NEXT:    fstpl {{[0-9]+}}(%esp)
+; X86-NEXT:    vmovsd {{.*#+}} xmm0 = mem[0],zero
+; X86-NEXT:    vmovhps {{.*#+}} xmm0 = xmm0[0,1],mem[0,1]
+; X86-NEXT:    fildll {{[0-9]+}}(%esp)
+; X86-NEXT:    fstpl {{[0-9]+}}(%esp)
+; X86-NEXT:    fildll {{[0-9]+}}(%esp)
+; X86-NEXT:    fstpl (%esp)
+; X86-NEXT:    vmovsd {{.*#+}} xmm1 = mem[0],zero
+; X86-NEXT:    vmovhps {{.*#+}} xmm1 = xmm1[0,1],mem[0,1]
+; X86-NEXT:    vinsertf128 $1, %xmm1, %ymm0, %ymm0
+; X86-NEXT:    movl %ebp, %esp
+; X86-NEXT:    popl %ebp
+; X86-NEXT:    retl
+;
+; X64-AVX1-LABEL: signbits_ashr_sitofp:
+; X64-AVX1:       # %bb.0:
+; X64-AVX1-NEXT:    vpsrlq $34, %xmm0, %xmm1
+; X64-AVX1-NEXT:    vpsrlq $33, %xmm0, %xmm2
+; X64-AVX1-NEXT:    vpblendw {{.*#+}} xmm1 = xmm2[0,1,2,3],xmm1[4,5,6,7]
+; X64-AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = [1073741824,536870912]
+; X64-AVX1-NEXT:    vpxor %xmm2, %xmm1, %xmm1
+; X64-AVX1-NEXT:    vpsubq %xmm2, %xmm1, %xmm1
+; X64-AVX1-NEXT:    vextractf128 $1, %ymm0, %xmm0
+; X64-AVX1-NEXT:    vpsrlq $36, %xmm0, %xmm2
+; X64-AVX1-NEXT:    vpsrlq $35, %xmm0, %xmm0
+; X64-AVX1-NEXT:    vpblendw {{.*#+}} xmm0 = xmm0[0,1,2,3],xmm2[4,5,6,7]
+; X64-AVX1-NEXT:    vmovdqa {{.*#+}} xmm2 = [268435456,134217728]
+; X64-AVX1-NEXT:    vpxor %xmm2, %xmm0, %xmm0
+; X64-AVX1-NEXT:    vpsubq %xmm2, %xmm0, %xmm0
+; X64-AVX1-NEXT:    vcvtdq2pd %xmm0, %xmm2
+; X64-AVX1-NEXT:    vpextrq $1, %xmm0, %rax
+; X64-AVX1-NEXT:    vcvtsi2sd %eax, %xmm3, %xmm0
+; X64-AVX1-NEXT:    vunpcklpd {{.*#+}} xmm0 = xmm2[0],xmm0[0]
+; X64-AVX1-NEXT:    vpextrq $1, %xmm1, %rax
+; X64-AVX1-NEXT:    vcvtsi2sd %rax, %xmm3, %xmm2
+; X64-AVX1-NEXT:    vmovq %xmm1, %rax
+; X64-AVX1-NEXT:    vcvtsi2sd %rax, %xmm3, %xmm1
+; X64-AVX1-NEXT:    vunpcklpd {{.*#+}} xmm1 = xmm1[0],xmm2[0]
+; X64-AVX1-NEXT:    vinsertf128 $1, %xmm0, %ymm1, %ymm0
+; X64-AVX1-NEXT:    retq
+;
+; X64-AVX2-LABEL: signbits_ashr_sitofp:
+; X64-AVX2:       # %bb.0:
+; X64-AVX2-NEXT:    vpsrlvq {{.*}}(%rip), %ymm0, %ymm0
+; X64-AVX2-NEXT:    vmovdqa {{.*#+}} ymm1 = [1073741824,536870912,268435456,134217728]
+; X64-AVX2-NEXT:    vpxor %ymm1, %ymm0, %ymm0
+; X64-AVX2-NEXT:    vpsubq %ymm1, %ymm0, %ymm0
+; X64-AVX2-NEXT:    vextracti128 $1, %ymm0, %xmm1
+; X64-AVX2-NEXT:    vpextrq $1, %xmm1, %rax
+; X64-AVX2-NEXT:    vcvtsi2sd %rax, %xmm2, %xmm2
+; X64-AVX2-NEXT:    vmovq %xmm1, %rax
+; X64-AVX2-NEXT:    vcvtsi2sd %rax, %xmm3, %xmm1
+; X64-AVX2-NEXT:    vunpcklpd {{.*#+}} xmm1 = xmm1[0],xmm2[0]
+; X64-AVX2-NEXT:    vpextrq $1, %xmm0, %rax
+; X64-AVX2-NEXT:    vcvtsi2sd %rax, %xmm3, %xmm2
+; X64-AVX2-NEXT:    vmovq %xmm0, %rax
+; X64-AVX2-NEXT:    vcvtsi2sd %rax, %xmm3, %xmm0
+; X64-AVX2-NEXT:    vunpcklpd {{.*#+}} xmm0 = xmm0[0],xmm2[0]
+; X64-AVX2-NEXT:    vinsertf128 $1, %xmm1, %ymm0, %ymm0
+; X64-AVX2-NEXT:    retq
+  %1 = ashr <4 x i64> %a0, <i64 33, i64 34, i64 35, i64 36>
+  %2 = sitofp <4 x i64> %1 to <4 x double>
+  ret <4 x double> %2
+}
+
 define float @signbits_ashr_extract_sitofp_0(<2 x i64> %a0) nounwind {
 ; X86-LABEL: signbits_ashr_extract_sitofp_0:
 ; X86:       # %bb.0:
-- 
2.7.4