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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2012-12-25 12:54:19 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2012-12-25 12:54:19 +0000 |
| commit | 382ed78d3fef9f6c582e3cdcfb30f8c6fa3d0d79 (patch) | |
| tree | 8afbebf801304afabf67b3a32da347dc6e1a3159 /test | |
| parent | 4684858624d7ffe82379783e9b678227d5e0b515 (diff) | |
X86: Custom lower <2 x i64> eq and ne when SSE41 is not available.
pcmpeqd, pshufd, pshufd, pand is cheaper than unpack + cmpq, sbbq, cmpq, sbbq + pack.
Small speedup on loop-vectorized viterbi (-march=core2).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171063 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/X86/vec_compare.ll | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/test/CodeGen/X86/vec_compare.ll b/test/CodeGen/X86/vec_compare.ll index 367dd27f30..cf86c737c7 100644 --- a/test/CodeGen/X86/vec_compare.ll +++ b/test/CodeGen/X86/vec_compare.ll @@ -41,3 +41,29 @@ define <4 x i32> @test4(<4 x i32> %A, <4 x i32> %B) nounwind { %D = sext <4 x i1> %C to <4 x i32> ret <4 x i32> %D } + +define <2 x i64> @test5(<2 x i64> %A, <2 x i64> %B) nounwind { +; CHECK: test5: +; CHECK: pcmpeqd +; CHECK: pshufd $-11 +; CHECK: pshufd $-96 +; CHECK: pand +; CHECK: ret + %C = icmp eq <2 x i64> %A, %B + %D = sext <2 x i1> %C to <2 x i64> + ret <2 x i64> %D +} + +define <2 x i64> @test6(<2 x i64> %A, <2 x i64> %B) nounwind { +; CHECK: test6: +; CHECK: pcmpeqd +; CHECK: pshufd $-11 +; CHECK: pshufd $-96 +; CHECK: pand +; CHECK: pcmpeqd +; CHECK: pxor +; CHECK: ret + %C = icmp ne <2 x i64> %A, %B + %D = sext <2 x i1> %C to <2 x i64> + ret <2 x i64> %D +} |