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(parent: 4684858) | patch
X86: Custom lower <2 x i64> eq and ne when SSE41 is not available.
authorBenjamin Kramer <benny.kra@googlemail.com>
Tue, 25 Dec 2012 12:54:19 +0000 (12:54 +0000)
committerBenjamin Kramer <benny.kra@googlemail.com>
Tue, 25 Dec 2012 12:54:19 +0000 (12:54 +0000)
commit382ed78d3fef9f6c582e3cdcfb30f8c6fa3d0d79
tree8afbebf801304afabf67b3a32da347dc6e1a3159tree | snapshot
parent4684858624d7ffe82379783e9b678227d5e0b515commit | 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
lib/Target/X86/X86ISelLowering.cpp diff | blob | history
test/CodeGen/X86/vec_compare.ll diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors