[commit: ghc] master: Turn divInt# and modInt# into bitwise operations when possible (6ea6242)

[git at git.haskell.org]

Repository : ssh://git@git.haskell.org/ghc

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/6ea62427de419ea071e1ea79ad0c15d9f4e90a67/ghc

>---------------------------------------------------------------

commit 6ea62427de419ea071e1ea79ad0c15d9f4e90a67
Author: Takano Akio <tak at anoak.io>
Date:   Sun Sep 4 13:22:22 2016 -0400

    Turn divInt# and modInt# into bitwise operations when possible
    
    This implements #5615 for divInt# and modInt#.
    
    I also included rules to do constant-folding when the both arguments
    are known.
    
    Test Plan: validate
    
    Reviewers: austin, simonmar, bgamari
    
    Reviewed By: bgamari
    
    Subscribers: hvr, thomie
    
    Differential Revision: https://phabricator.haskell.org/D2486
    
    GHC Trac Issues: #5615


>---------------------------------------------------------------

6ea62427de419ea071e1ea79ad0c15d9f4e90a67
 compiler/cmm/CmmOpt.hs                             | 21 +------------------
 compiler/prelude/PrelNames.hs                      | 12 ++++++++++-
 compiler/prelude/PrelRules.hs                      | 21 ++++++++++++++++++-
 compiler/prelude/primops.txt.pp                    |  8 ++++++--
 compiler/utils/Util.hs                             | 24 ++++++++++++++++++++++
 libraries/ghc-prim/GHC/Classes.hs                  |  3 +++
 testsuite/tests/simplCore/should_compile/Makefile  | 10 +++++++++
 testsuite/tests/simplCore/should_compile/T5615.hs  | 10 +++++++++
 .../should_compile/T5615.stdout}                   |  0
 testsuite/tests/simplCore/should_compile/all.T     |  1 +
 10 files changed, 86 insertions(+), 24 deletions(-)

Diff suppressed because of size. To see it, use:

    git diff-tree --root --patch-with-stat --no-color --find-copies-harder --ignore-space-at-eol --cc 6ea62427de419ea071e1ea79ad0c15d9f4e90a67