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4 Commits

Author SHA1 Message Date
Simon Pilgrim 8e5ecf8ad1 [X86][XOP] Added support for VPMADCSWD 'extend+hadd' IFMA patterns 
VPMADCSWD act as VPADDD( VPMADDWD( x, y ), z ) - multiply+extend+hadd and add to v4i32 accumulator

llvm-svn: 292021
 2017-01-14 18:52:13 +00:00
Simon Pilgrim b290805e94 [X86][XOP] Added support for VPMACSDQH/VPMACSDQL 'extension' IFMA patterns 
VPMACSDQH/VPMACSDQL act as VPADDQ( VPMULDQ( x, y ), z ) - multiply+extending either the odd/even 4i32 input elements and adding to v2i64 accumulator

llvm-svn: 292020
 2017-01-14 18:08:54 +00:00
Simon Pilgrim a1631749f8 [X86][XOP] Added support for VPMACSWW/VPMACSDD 'lossy' IFMA patterns 
VPMACSWW/VPMACSDD act as add( mul( x, y ), z ) - ignoring any upper bits from both the multiply and add stages

llvm-svn: 292019
 2017-01-14 17:13:52 +00:00
Simon Pilgrim 3a1a800128 [X86][XOP] Add tests for integer fused multiply add 
Tests showing missed opportunities to use XOP's integer fma instructions

Some of these are pretty awkward to match as they often have implicit sext/trunc stages but many just ignore overflow bits which makes things pretty straightforward.

llvm-svn: 292017
 2017-01-14 13:07:22 +00:00