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(parent: 38b6d9d) | patch
Improve 256-bit shuffle splitting to allow 2 sources in each 128-bit lane. As long...
authorCraig Topper <craig.topper@gmail.com>
Fri, 20 Jan 2012 09:29:03 +0000 (09:29 +0000)
committerCraig Topper <craig.topper@gmail.com>
Fri, 20 Jan 2012 09:29:03 +0000 (09:29 +0000)
commit8f35c13842187d23e7d10ec2e5f416d0363abf50
treee796f9befb64933eba76fe163d7154294204a18ctree | snapshot
parent38b6d9dd22e3989d8d9a1b9916df13b7976a0a85commit | diff
Improve 256-bit shuffle splitting to allow 2 sources in each 128-bit lane. As long as only a single lane of the source is used in the lane in the destination. This makes the splitting match much closer to what happens with 256-bit shuffles when AVX is disabled and only 128-bit XMM is allowed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148537 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/X86/X86ISelLowering.cpp diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors