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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2016-08-24 18:07:53 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2016-08-24 18:07:53 +0000 |
| commit | 941bd6bbae6ba1fbf3d46cfb365d1015703ef448 (patch) | |
| tree | 8eddc2a47b1117c80aff16e57288bb09d505d194 /llvm/test/CodeGen/X86/vector-shuffle-variable-256.ll | |
| parent | 26d9c41ff6b863253e1e9b17bd5acffc30ead692 (diff) | |
| download | bcm5719-llvm-941bd6bbae6ba1fbf3d46cfb365d1015703ef448.tar.gz bcm5719-llvm-941bd6bbae6ba1fbf3d46cfb365d1015703ef448.zip | |
[X86][SSE] Add support for combining VZEXT_MOVL target shuffles
Includes adding more general support for the pattern: VZEXT_MOVL(VZEXT_LOAD(ptr)) -> VZEXT_LOAD(ptr)
This has unearthed a couple of latent poor codegen issues (MINSS/MAXSS scalar load folding and MOVDDUP/BROADCAST load folding patterns), which will be fixed shortly.
Its also reduced a couple of tests so that they no longer reach the instruction threshold necessary to be combined to PSHUFB (see PR26183).
llvm-svn: 279646
Diffstat (limited to 'llvm/test/CodeGen/X86/vector-shuffle-variable-256.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/vector-shuffle-variable-256.ll | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/test/CodeGen/X86/vector-shuffle-variable-256.ll b/llvm/test/CodeGen/X86/vector-shuffle-variable-256.ll index e8d9aa20491..bd59328aaf8 100644 --- a/llvm/test/CodeGen/X86/vector-shuffle-variable-256.ll +++ b/llvm/test/CodeGen/X86/vector-shuffle-variable-256.ll @@ -41,7 +41,8 @@ define <4 x double> @var_shuffle_v4f64_v4f64_uxx0_i64(<4 x double> %x, i64 %i0, ; ALL-NEXT: andq $-32, %rsp ; ALL-NEXT: subq $64, %rsp ; ALL-NEXT: vmovaps %ymm0, (%rsp) -; ALL-NEXT: vmovddup {{.*#+}} xmm0 = mem[0,0] +; ALL-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero +; ALL-NEXT: vmovddup {{.*#+}} xmm0 = xmm0[0,0] ; ALL-NEXT: vmovsd {{.*#+}} xmm1 = mem[0],zero ; ALL-NEXT: vinsertf128 $1, %xmm1, %ymm0, %ymm0 ; ALL-NEXT: movq %rbp, %rsp |
