Add reproducer test for pr32449. NFC.

llvm-svn: 298930

1 files changed, 44 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/X86/shuffle-of-splat-multiuses.ll b/llvm/test/CodeGen/X86/shuffle-of-splat-multiuses.ll
new file mode 100644
index 00000000000..38d45ca99eb
--- /dev/null
+++ b/llvm/test/CodeGen/X86/shuffle-of-splat-multiuses.ll
@@ -0,0 +1,44 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+avx2 | FileCheck %s --check-prefix=AVX2
+; PR32449
+
+define <2 x double> @foo2(<2 x double> %v, <2 x double> *%p) nounwind {
+; AVX2-LABEL: foo2:
+; AVX2:       # BB#0:
+; AVX2-NEXT:    vpermilpd {{.*#+}} xmm1 = xmm0[1,1]
+; AVX2-NEXT:    vpermilpd {{.*#+}} xmm0 = xmm1[1,0]
+; AVX2-NEXT:    vmovapd %xmm1, (%rdi)
+; AVX2-NEXT:    retq
+  %res = shufflevector <2 x double> %v, <2 x double> undef, <2 x i32> <i32 1, i32 1>
+  %res1 = shufflevector<2 x double> %res, <2 x double> undef, <2 x i32> <i32 1, i32 undef>
+  store <2 x double> %res, <2 x double>* %p
+  ret <2 x double> %res1
+}
+
+define <4 x double> @foo4(<4 x double> %v, <4 x double> *%p) nounwind {
+; AVX2-LABEL: foo4:
+; AVX2:       # BB#0:
+; AVX2-NEXT:    vpermpd {{.*#+}} ymm1 = ymm0[2,2,2,2]
+; AVX2-NEXT:    vpermpd {{.*#+}} ymm0 = ymm1[2,0,2,3]
+; AVX2-NEXT:    vmovapd %ymm1, (%rdi)
+; AVX2-NEXT:    retq
+  %res = shufflevector <4 x double> %v, <4 x double> undef, <4 x i32> <i32 2, i32 2, i32 2, i32 2>
+  %res1 = shufflevector<4 x double> %res, <4 x double> undef, <4 x i32> <i32 2, i32 0, i32 undef, i32 undef>
+  store <4 x double> %res, <4 x double>* %p
+  ret <4 x double> %res1
+}
+
+define <8 x float> @foo8(<8 x float> %v, <8 x float> *%p) nounwind {
+; AVX2-LABEL: foo8:
+; AVX2:       # BB#0:
+; AVX2-NEXT:    vmovshdup {{.*#+}} ymm0 = ymm0[1,1,3,3,5,5,7,7]
+; AVX2-NEXT:    vpermpd {{.*#+}} ymm1 = ymm0[2,2,2,2]
+; AVX2-NEXT:    vmovaps {{.*#+}} ymm0 = <2,0,u,u,5,1,3,7>
+; AVX2-NEXT:    vpermps %ymm1, %ymm0, %ymm0
+; AVX2-NEXT:    vmovapd %ymm1, (%rdi)
+; AVX2-NEXT:    retq
+  %res = shufflevector <8 x float> %v, <8 x float> undef, <8 x i32> <i32 5, i32 5, i32 5, i32 5, i32 5, i32 5, i32 5, i32 5>
+  %res1 = shufflevector<8 x float> %res, <8 x float> undef, <8 x i32> <i32 2, i32 0, i32 undef, i32 undef, i32 5, i32 1, i32 3, i32 7>
+  store <8 x float> %res, <8 x float>* %p
+  ret <8 x float> %res1
+}