[GHC] #7571: LLVM codegen does not handle integer literals in branch conditionals.

[GHC]

#7571: LLVM codegen does not handle integer literals in branch conditionals.
---------------------------------+------------------------------------------
    Reporter:  thoughtpolice     |       Owner:  thoughtpolice     
        Type:  bug               |      Status:  patch             
    Priority:  normal            |   Milestone:                    
   Component:  Compiler (LLVM)   |     Version:  7.7               
    Keywords:  llvm, codegen     |          Os:  Unknown/Multiple  
Architecture:  Unknown/Multiple  |     Failure:  Compile-time crash
  Difficulty:  Unknown           |    Testcase:                    
   Blockedby:  7573, 7590        |    Blocking:  7588, 7589        
     Related:  #7574, #7575      |  
---------------------------------+------------------------------------------

Comment(by dterei):

 Austin, can you explain your setup please? All these bugs you are filing
 and fixing are ones I fixed in some form 2 years ago. The existing llvm
 backend contains code to do exactly what the bug description describes,
 narrow arbritry expressions to a boolean when used as a conditional.

 I can also currently bootstrap GHC with LLVM fine on both OSX 10.8 and
 Linux. (Both 64 bit).

 Are you cross compiling? Or compiling on a 64bit OSX machine but producing
 a 32bit GHC? I think the backend may have bugs to do with this as it makes
 assumptions about word sizes... and so detection of various cases that
 need to be avoided aren't firing.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7571#comment:16>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler