[X86][XOP] Add test showing failure to combine build vector to vpermil2ps shuffle

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@293663 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/vector-shuffle-combining-xop.ll b/test/CodeGen/X86/vector-shuffle-combining-xop.ll
index 73bb5b1f46e8e6ef78211f6b0547b2db45c50b7c..16878c3263895098f0a827bd823cf55ee1142001 100644 (file)
--- a/test/CodeGen/X86/vector-shuffle-combining-xop.ll
+++ b/test/CodeGen/X86/vector-shuffle-combining-xop.ll
@@ -341,6 +341,34 @@ define void @buildvector_v4f32_0404(float %a, float %b, <4 x float>* %ptr) {
   ret void
 }
 
+define void @buildvector_v4f32_07z6(float %a, <4 x float> %b, <4 x float>* %ptr) {
+; X32-LABEL: buildvector_v4f32_07z6:
+; X32:       # BB#0:
+; X32-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; X32-NEXT:    vpermilps {{.*#+}} xmm1 = xmm0[3,1,2,3]
+; X32-NEXT:    vmovss {{.*#+}} xmm2 = mem[0],zero,zero,zero
+; X32-NEXT:    vunpcklps {{.*#+}} xmm1 = xmm2[0],xmm1[0],xmm2[1],xmm1[1]
+; X32-NEXT:    vinsertps {{.*#+}} xmm0 = xmm1[0,1],zero,xmm0[2]
+; X32-NEXT:    vmovaps %xmm0, (%eax)
+; X32-NEXT:    retl
+;
+; X64-LABEL: buildvector_v4f32_07z6:
+; X64:       # BB#0:
+; X64-NEXT:    vpermilps {{.*#+}} xmm2 = xmm1[3,1,2,3]
+; X64-NEXT:    vunpcklps {{.*#+}} xmm0 = xmm0[0],xmm2[0],xmm0[1],xmm2[1]
+; X64-NEXT:    vinsertps {{.*#+}} xmm0 = xmm0[0,1],zero,xmm1[2]
+; X64-NEXT:    vmovaps %xmm0, (%rdi)
+; X64-NEXT:    retq
+  %b2 = extractelement <4 x float> %b, i32 2
+  %b3 = extractelement <4 x float> %b, i32 3
+  %v0 = insertelement <4 x float> undef, float  %a, i32 0
+  %v1 = insertelement <4 x float> %v0,   float %b3, i32 1
+  %v2 = insertelement <4 x float> %v1,   float 0.0, i32 2
+  %v3 = insertelement <4 x float> %v2,   float %b2, i32 3
+  store <4 x float> %v3, <4 x float>* %ptr
+  ret void
+}
+
 define <2 x double> @constant_fold_vpermil2pd() {
 ; X32-LABEL: constant_fold_vpermil2pd:
 ; X32:       # BB#0: