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[X86][SSE] combineTruncateWithSat - use truncateVectorWithPACK down to 64-bit subvectors
authorSimon Pilgrim <llvm-dev@redking.me.uk>
Mon, 19 Feb 2018 13:29:20 +0000 (13:29 +0000)
committerSimon Pilgrim <llvm-dev@redking.me.uk>
Mon, 19 Feb 2018 13:29:20 +0000 (13:29 +0000)
commitdb74b76ab5dc207c3b00a1c71f7a4974b788cd47
tree3b5c5356d508d60e17ea51ab36dbd7e327e30464tree | snapshot
parent0b603b77476de9ada3f5d226ef9246eff5dbae07commit | diff
[X86][SSE] combineTruncateWithSat - use truncateVectorWithPACK down to 64-bit subvectors

Add support for chaining PACKSS/PACKUS down to 64-bit vectors by using only a single 128-bit input.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@325494 91177308-0d34-0410-b5e6-96231b3b80d8
lib/Target/X86/X86ISelLowering.cpp diff | blob | history
test/CodeGen/X86/vector-trunc-packus.ll diff | blob | history
test/CodeGen/X86/vector-trunc-ssat.ll diff | blob | history
external/llvm
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