[commit: ghc] wip/T10137: Refactor code generation for switch expression (4be8983)

[git at git.haskell.org]

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

On branch  : wip/T10137
Link       : http://ghc.haskell.org/trac/ghc/changeset/4be8983d6a54605b4c6242f475203c441d94e9e2/ghc

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

commit 4be8983d6a54605b4c6242f475203c441d94e9e2
Author: Joachim Breitner <mail at joachim-breitner.de>
Date:   Sun Mar 8 17:09:46 2015 +0100

    Refactor code generation for switch expression
    
    This (work-in-progress, Notes-lacking) commit:
     * Moves the planning of a switch statement from the Stg → Cmm
       transformation to a separate Cmm → Cmm phase.
     * Separates the algorithm that does the planning from the code that
       that implements it on Cmm Graphs.
     * Is already smarter, i.e. will not break the range in the middle of a
       dense (and hence jump-table-suitable) part.


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

4be8983d6a54605b4c6242f475203c441d94e9e2
 compiler/cmm/CmmCreateSwitchPlans.hs |  75 ++++++++++
 compiler/cmm/CmmNode.hs              | 109 +-------------
 compiler/cmm/CmmPipeline.hs          |   6 +
 compiler/cmm/CmmSwitch.hs            | 267 +++++++++++++++++++++++++++++++++++
 compiler/codeGen/StgCmmUtils.hs      | 129 ++---------------
 compiler/ghc.cabal.in                |   2 +
 compiler/ghc.mk                      |   1 +
 7 files changed, 367 insertions(+), 222 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 4be8983d6a54605b4c6242f475203c441d94e9e2