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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2015-08-19 20:09:50 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2015-08-19 20:09:50 +0000 |
| commit | 989cbbd2f5f866bff88254458bc40632aa8c73e0 (patch) | |
| tree | 0720278f31fc8663d4ebd34b117390e2fd2435c8 /llvm/test/CodeGen/X86/vector-shuffle-256-v8.ll | |
| parent | 1d02f681a94d7e898b16f8a79083a65f397c9d9d (diff) | |
| download | bcm5719-llvm-989cbbd2f5f866bff88254458bc40632aa8c73e0.tar.gz bcm5719-llvm-989cbbd2f5f866bff88254458bc40632aa8c73e0.zip | |
[DAGCombiner] Fold CONCAT_VECTORS of EXTRACT_SUBVECTOR (or undef) to VECTOR_SHUFFLE.
Check to see if this is a CONCAT_VECTORS of a bunch of EXTRACT_SUBVECTOR operations. If so, and if the EXTRACT_SUBVECTOR vector inputs come from at most two distinct vectors the same size as the result, attempt to turn this into a legal shuffle.
Differential Revision: http://reviews.llvm.org/D12125
llvm-svn: 245490
Diffstat (limited to 'llvm/test/CodeGen/X86/vector-shuffle-256-v8.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/vector-shuffle-256-v8.ll | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/llvm/test/CodeGen/X86/vector-shuffle-256-v8.ll b/llvm/test/CodeGen/X86/vector-shuffle-256-v8.ll index 5a19bd6c677..525e43d3147 100644 --- a/llvm/test/CodeGen/X86/vector-shuffle-256-v8.ll +++ b/llvm/test/CodeGen/X86/vector-shuffle-256-v8.ll @@ -2099,11 +2099,15 @@ define <8 x i32> @insert_mem_and_zero_v8i32(i32* %ptr) { } define <8 x i32> @concat_v8i32_0123CDEF(<8 x i32> %a, <8 x i32> %b) { -; ALL-LABEL: concat_v8i32_0123CDEF: -; ALL: # BB#0: -; ALL-NEXT: vextractf128 $1, %ymm1, %xmm1 -; ALL-NEXT: vinsertf128 $1, %xmm1, %ymm0, %ymm0 -; ALL-NEXT: retq +; AVX1-LABEL: concat_v8i32_0123CDEF: +; AVX1: # BB#0: +; AVX1-NEXT: vblendpd {{.*#+}} ymm0 = ymm0[0,1],ymm1[2,3] +; AVX1-NEXT: retq +; +; AVX2-LABEL: concat_v8i32_0123CDEF: +; AVX2: # BB#0: +; AVX2-NEXT: vpblendd {{.*#+}} ymm0 = ymm0[0,1,2,3],ymm1[4,5,6,7] +; AVX2-NEXT: retq %alo = shufflevector <8 x i32> %a, <8 x i32> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 3> %bhi = shufflevector <8 x i32> %b, <8 x i32> undef, <4 x i32> <i32 4, i32 5, i32 6, i32 7> %shuf = shufflevector <4 x i32> %alo, <4 x i32> %bhi, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7> @@ -2113,9 +2117,7 @@ define <8 x i32> @concat_v8i32_0123CDEF(<8 x i32> %a, <8 x i32> %b) { define <8 x i32> @concat_v8i32_4567CDEF_bc(<8 x i32> %a0, <8 x i32> %a1) { ; ALL-LABEL: concat_v8i32_4567CDEF_bc: ; ALL: # BB#0: -; ALL-NEXT: vextractf128 $1, %ymm0, %xmm0 -; ALL-NEXT: vextractf128 $1, %ymm1, %xmm1 -; ALL-NEXT: vinsertf128 $1, %xmm1, %ymm0, %ymm0 +; ALL-NEXT: vperm2f128 {{.*#+}} ymm0 = ymm0[2,3],ymm1[2,3] ; ALL-NEXT: retq %a0hi = shufflevector <8 x i32> %a0, <8 x i32> %a1, <4 x i32> <i32 4, i32 5, i32 6, i32 7> %a1hi = shufflevector <8 x i32> %a0, <8 x i32> %a1, <4 x i32> <i32 12, i32 13, i32 14, i32 15> |
