[GHC] #14206: Add bit deposit and bit extraction primops

[GHC]

#14206: Add bit deposit and bit extraction primops
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        Reporter:  newhoggy          |                Owner:  (none)
            Type:  feature request   |               Status:  closed
        Priority:  normal            |            Milestone:  8.4.1
       Component:  Compiler          |              Version:  8.2.1
      Resolution:  fixed             |             Keywords:
Operating System:  Unknown/Multiple  |         Architecture:
                                     |  Unknown/Multiple
 Type of failure:  None/Unknown      |            Test Case:
      Blocked By:                    |             Blocking:
 Related Tickets:                    |  Differential Rev(s):
       Wiki Page:                    |
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Comment (by Ben Gamari <ben@…>):

 In [changeset:"f855769690eb998ea25818ee794714957852af48/ghc"
 f8557696/ghc]:
 {{{
 #!CommitTicketReference repository="ghc"
 revision="f855769690eb998ea25818ee794714957852af48"
 Add new mbmi and mbmi2 compiler flags

 This adds support for the bit deposit and extraction operations provided
 by the BMI and BMI2 instruction set extensions on modern amd64 machines.

 Implement x86 code generator for pdep and pext.  Properly initialise
 bmiVersion field.

 pdep and pext test cases

 Fix pattern match for pdep and pext instructions

 Fix build of pdep and pext code for 32-bit architectures

 Test Plan: Validate

 Reviewers: austin, simonmar, bgamari, angerman

 Reviewed By: bgamari

 Subscribers: trommler, carter, angerman, thomie, rwbarton, newhoggy

 GHC Trac Issues: #14206

 Differential Revision: https://phabricator.haskell.org/D4236
 }}}

-- 
Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14206#comment:10>
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