[llvm] r357630 - [x86] add test for disguised horizontal op; NFC

[Sanjay Patel via llvm-commits]

Author: spatel
Date: Wed Apr  3 13:34:22 2019
New Revision: 357630

URL: http://llvm.org/viewvc/llvm-project?rev=357630&view=rev
Log:
[x86] add test for disguised horizontal op; NFC

Modified:
    llvm/trunk/test/CodeGen/X86/haddsub-shuf.ll

Modified: llvm/trunk/test/CodeGen/X86/haddsub-shuf.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/haddsub-shuf.ll?rev=357630&r1=357629&r2=357630&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/haddsub-shuf.ll (original)
+++ llvm/trunk/test/CodeGen/X86/haddsub-shuf.ll Wed Apr  3 13:34:22 2019
@@ -313,6 +313,54 @@ define <2 x double> @hadd_v2f64(<2 x dou
   ret <2 x double> %shuf
 }
 
+define <2 x double> @hadd_v2f64_scalar_splat(<2 x double> %a) {
+; SSSE3_SLOW-LABEL: hadd_v2f64_scalar_splat:
+; SSSE3_SLOW:       # %bb.0:
+; SSSE3_SLOW-NEXT:    movapd %xmm0, %xmm1
+; SSSE3_SLOW-NEXT:    unpckhpd {{.*#+}} xmm1 = xmm1[1],xmm0[1]
+; SSSE3_SLOW-NEXT:    addsd %xmm0, %xmm1
+; SSSE3_SLOW-NEXT:    movddup {{.*#+}} xmm0 = xmm1[0,0]
+; SSSE3_SLOW-NEXT:    retq
+;
+; SSSE3_FAST-LABEL: hadd_v2f64_scalar_splat:
+; SSSE3_FAST:       # %bb.0:
+; SSSE3_FAST-NEXT:    haddpd %xmm0, %xmm0
+; SSSE3_FAST-NEXT:    movddup {{.*#+}} xmm0 = xmm0[0,0]
+; SSSE3_FAST-NEXT:    retq
+;
+; AVX1_SLOW-LABEL: hadd_v2f64_scalar_splat:
+; AVX1_SLOW:       # %bb.0:
+; AVX1_SLOW-NEXT:    vpermilpd {{.*#+}} xmm1 = xmm0[1,0]
+; AVX1_SLOW-NEXT:    vaddsd %xmm1, %xmm0, %xmm0
+; AVX1_SLOW-NEXT:    vmovddup {{.*#+}} xmm0 = xmm0[0,0]
+; AVX1_SLOW-NEXT:    retq
+;
+; AVX1_FAST-LABEL: hadd_v2f64_scalar_splat:
+; AVX1_FAST:       # %bb.0:
+; AVX1_FAST-NEXT:    vhaddpd %xmm0, %xmm0, %xmm0
+; AVX1_FAST-NEXT:    vmovddup {{.*#+}} xmm0 = xmm0[0,0]
+; AVX1_FAST-NEXT:    retq
+;
+; AVX2_SLOW-LABEL: hadd_v2f64_scalar_splat:
+; AVX2_SLOW:       # %bb.0:
+; AVX2_SLOW-NEXT:    vpermilpd {{.*#+}} xmm1 = xmm0[1,0]
+; AVX2_SLOW-NEXT:    vaddsd %xmm1, %xmm0, %xmm0
+; AVX2_SLOW-NEXT:    vmovddup {{.*#+}} xmm0 = xmm0[0,0]
+; AVX2_SLOW-NEXT:    retq
+;
+; AVX2_FAST-LABEL: hadd_v2f64_scalar_splat:
+; AVX2_FAST:       # %bb.0:
+; AVX2_FAST-NEXT:    vhaddpd %xmm0, %xmm0, %xmm0
+; AVX2_FAST-NEXT:    vmovddup {{.*#+}} xmm0 = xmm0[0,0]
+; AVX2_FAST-NEXT:    retq
+  %a0 = extractelement <2 x double> %a, i32 0
+  %a1 = extractelement <2 x double> %a, i32 1
+  %hop = fadd double %a0, %a1
+  %ins = insertelement <2 x double> undef, double %hop, i32 0
+  %shuf = shufflevector <2 x double> %ins, <2 x double> undef, <2 x i32> <i32 0, i32 0>
+  ret <2 x double> %shuf
+}
+
 define <4 x double> @hadd_v4f64(<4 x double> %a) {
 ; SSSE3_SLOW-LABEL: hadd_v4f64:
 ; SSSE3_SLOW:       # %bb.0: