[llvm] r372883 - [x86] add test for multi-use scalarization of vector binop; NFC

[Sanjay Patel via llvm-commits]

Author: spatel
Date: Wed Sep 25 07:57:45 2019
New Revision: 372883

URL: http://llvm.org/viewvc/llvm-project?rev=372883&view=rev
Log:
[x86] add test for multi-use scalarization of vector binop; NFC

Modified:
    llvm/trunk/test/CodeGen/X86/scalarize-fp.ll

Modified: llvm/trunk/test/CodeGen/X86/scalarize-fp.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/scalarize-fp.ll?rev=372883&r1=372882&r2=372883&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/scalarize-fp.ll (original)
+++ llvm/trunk/test/CodeGen/X86/scalarize-fp.ll Wed Sep 25 07:57:45 2019
@@ -773,3 +773,29 @@ define <8 x float> @splat0_fdiv_const_op
   %r = shufflevector <8 x float> %b, <8 x float> undef, <8 x i32> zeroinitializer
   ret <8 x float> %r
 }
+
+define <4 x float> @multi_use_binop(<4 x float> %x, <4 x float> %y) {
+; SSE-LABEL: multi_use_binop:
+; SSE:       # %bb.0:
+; SSE-NEXT:    movaps %xmm0, %xmm2
+; SSE-NEXT:    mulps %xmm1, %xmm2
+; SSE-NEXT:    mulss %xmm1, %xmm0
+; SSE-NEXT:    shufps {{.*#+}} xmm0 = xmm0[0,0,0,0]
+; SSE-NEXT:    movlhps {{.*#+}} xmm1 = xmm1[0],xmm2[0]
+; SSE-NEXT:    addps %xmm1, %xmm0
+; SSE-NEXT:    retq
+;
+; AVX-LABEL: multi_use_binop:
+; AVX:       # %bb.0:
+; AVX-NEXT:    vmulps %xmm1, %xmm0, %xmm2
+; AVX-NEXT:    vmulss %xmm1, %xmm0, %xmm0
+; AVX-NEXT:    vpermilps {{.*#+}} xmm0 = xmm0[0,0,0,0]
+; AVX-NEXT:    vmovddup {{.*#+}} xmm1 = xmm2[0,0]
+; AVX-NEXT:    vaddps %xmm1, %xmm0, %xmm0
+; AVX-NEXT:    retq
+  %mul = fmul <4 x float> %x, %y
+  %mul0 = shufflevector <4 x float> %mul, <4 x float> undef, <4 x i32> <i32 undef, i32 undef, i32 undef, i32 0>
+  %mul1 = shufflevector <4 x float> %mul, <4 x float> undef, <4 x i32> <i32 undef, i32 undef, i32 undef, i32 1>
+  %r = fadd <4 x float> %mul0, %mul1
+  ret <4 x float> %r
+}