[commit: ghc] master: Document some codegen nondeterminism (6ed7c47)

[git at git.haskell.org]

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

On branch  : master
Link       : http://ghc.haskell.org/trac/ghc/changeset/6ed7c4793fe1acd491646a8312afbbda6be1fd0b/ghc

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

commit 6ed7c4793fe1acd491646a8312afbbda6be1fd0b
Author: Bartosz Nitka <niteria at gmail.com>
Date:   Thu Jul 7 03:07:20 2016 -0700

    Document some codegen nondeterminism
    
    Bit-for-bit reproducible binaries are not a goal for now,
    so this is just marking places that could be a problem.
    Doing this will allow eltsUFM to be removed and will
    leave only nonDetEltsUFM.
    
    GHC Trac: #4012


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

6ed7c4793fe1acd491646a8312afbbda6be1fd0b
 compiler/cmm/CmmCommonBlockElim.hs                 |  3 ++-
 compiler/cmm/CmmLayoutStack.hs                     | 12 +++++++----
 compiler/nativeGen/AsmCodeGen.hs                   |  4 +++-
 compiler/nativeGen/RegAlloc/Graph/Main.hs          |  3 ++-
 compiler/nativeGen/RegAlloc/Graph/Spill.hs         |  5 ++---
 compiler/nativeGen/RegAlloc/Graph/SpillCost.hs     |  6 ++++--
 compiler/nativeGen/RegAlloc/Graph/Stats.hs         | 14 +++++++------
 compiler/nativeGen/RegAlloc/Graph/TrivColorable.hs |  3 ++-
 compiler/nativeGen/RegAlloc/Linear/Stats.hs        |  3 ++-
 compiler/utils/GraphOps.hs                         | 23 +++++++++++++---------
 compiler/utils/GraphPpr.hs                         |  5 +++--
 11 files changed, 50 insertions(+), 31 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 6ed7c4793fe1acd491646a8312afbbda6be1fd0b