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| author | Sanjay Patel <spatel@rotateright.com> | 2018-12-20 17:05:57 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2018-12-20 17:05:57 +0000 |
| commit | 18b008b5771bf5085268aec2ade92c315081200f (patch) | |
| tree | e943643c829d03d4d25db1293b5427a1a4f9308b /llvm | |
| parent | 367a7b7d66401a1d9d81a3f061bfd19a701c9f23 (diff) | |
| download | bcm5719-llvm-18b008b5771bf5085268aec2ade92c315081200f.tar.gz bcm5719-llvm-18b008b5771bf5085268aec2ade92c315081200f.zip | |
[x86] add test to show missed movddup load fold; NFC
llvm-svn: 349773
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/test/CodeGen/X86/build-vector-128.ll | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/X86/build-vector-128.ll b/llvm/test/CodeGen/X86/build-vector-128.ll index 9702e4be22a..d859be16083 100644 --- a/llvm/test/CodeGen/X86/build-vector-128.ll +++ b/llvm/test/CodeGen/X86/build-vector-128.ll @@ -508,6 +508,54 @@ define <4 x i32> @test_buildvector_v4i32_splat_zext_i8(i8 %in) { ret <4 x i32> %splat } +define <4 x float> @movddup_load_fold(float %x, float %y) { +; SSE2-32-LABEL: movddup_load_fold: +; SSE2-32: # %bb.0: +; SSE2-32-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero +; SSE2-32-NEXT: movlhps {{.*#+}} xmm0 = xmm0[0,0] +; SSE2-32-NEXT: retl +; +; SSE2-64-LABEL: movddup_load_fold: +; SSE2-64: # %bb.0: +; SSE2-64-NEXT: unpcklps {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1] +; SSE2-64-NEXT: movlhps {{.*#+}} xmm0 = xmm0[0,0] +; SSE2-64-NEXT: retq +; +; SSE41-32-LABEL: movddup_load_fold: +; SSE41-32: # %bb.0: +; SSE41-32-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero +; SSE41-32-NEXT: movddup {{.*#+}} xmm0 = xmm0[0,0] +; SSE41-32-NEXT: retl +; +; SSE41-64-LABEL: movddup_load_fold: +; SSE41-64: # %bb.0: +; SSE41-64-NEXT: insertps {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[2,3] +; SSE41-64-NEXT: movddup {{.*#+}} xmm0 = xmm0[0,0] +; SSE41-64-NEXT: retq +; +; AVX-32-LABEL: movddup_load_fold: +; AVX-32: # %bb.0: +; AVX-32-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero +; AVX-32-NEXT: vmovddup {{.*#+}} xmm0 = xmm0[0,0] +; AVX-32-NEXT: retl +; +; AVX1-64-LABEL: movddup_load_fold: +; AVX1-64: # %bb.0: +; AVX1-64-NEXT: vinsertps {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[2,3] +; AVX1-64-NEXT: vmovddup {{.*#+}} xmm0 = xmm0[0,0] +; AVX1-64-NEXT: retq +; +; AVX2-64-LABEL: movddup_load_fold: +; AVX2-64: # %bb.0: +; AVX2-64-NEXT: vunpcklps {{.*#+}} xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1] +; AVX2-64-NEXT: vmovddup {{.*#+}} xmm0 = xmm0[0,0] +; AVX2-64-NEXT: retq + %i0 = insertelement <4 x float> zeroinitializer, float %x, i32 0 + %i1 = insertelement <4 x float> %i0, float %y, i32 1 + %dup = shufflevector <4 x float> %i1, <4 x float> undef, <4 x i32> <i32 0, i32 1, i32 0, i32 1> + ret <4 x float> %dup +} + ; PR37502 - https://bugs.llvm.org/show_bug.cgi?id=37502 ; Don't use a series of insertps when movddup will do. |
