#15249: Add support for cmpeq and cmpgt MMX intrinsics -------------------------------------+------------------------------------- Reporter: newhoggy | Owner: newhoggy Type: task | Status: new Priority: normal | Milestone: 8.8.1 Component: Compiler | Version: 8.4.3 Resolution: | Keywords: primops Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by newhoggy): For motivation, SIMD instructions are really good for writing very high performance parsers. For example, the following C example shows a short C program using AVX2 intrinsics to produce a Rank-Select-Bit-String from a CSV file that can be used to index into the CSV file: https://github.com/haskell-works/hw-dsv/tree/simd The program is able to index a 7G CSV file in under 4s: {{{ $ time ./simd ./simd 1.10s user 2.34s system 89% cpu 3.840 total }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15249#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler