[GHC] #5139: Output ELF .size directives

[GHC]

#5139: Output ELF .size directives
---------------------------------+------------------------------------------
    Reporter:  tibbe             |       Owner:              
        Type:  feature request   |      Status:  patch       
    Priority:  normal            |   Component:  Compiler    
     Version:  7.0.3             |    Keywords:              
    Testcase:                    |   Blockedby:              
          Os:  Unknown/Multiple  |    Blocking:              
Architecture:  Unknown/Multiple  |     Failure:  None/Unknown
---------------------------------+------------------------------------------

Comment(by tibbe):

 Before patch:

 {{{
 $ perf report
    75.28%            bench  ./bench                    [.]
 0x000000002b612b
     7.11%            bench  /lib/libc-2.11.1.so        [.] memcpy
     5.47%            bench  ./bench                    [.]
 0x0000000000438f
     3.47%            bench  ./bench                    [.] allocate
     1.86%            bench  ./bench                    [.] s1Ol_info
     1.65%            bench  ./bench                    [.] s1Ok_info
     0.62%            bench  ./bench                    [.] memcpy at plt
     0.48%            bench  ./bench                    [.] clearNurseries
     0.33%            bench  ./bench                    [.] evacuate1
     0.24%            bench  ./bench                    [.] GarbageCollect
 }}}

 After patch:

 {{{
 $ perf report
     61.25%            bench  ./bench               [.] stg_newArrayzh
     13.25%            bench  ./bench               [.] stg_copyArrayzh
      7.62%            bench  /lib/libc-2.11.1.so   [.] memcpy
      4.31%            bench  ./bench               [.] s23r_info
      3.36%            bench  ./bench               [.] allocate
      3.31%            bench  ./bench               [.] s23q_info
      0.89%            bench  ./bench               [.] r20J_info
      0.79%            bench  ./bench               [.] memcpy at plt
      0.74%            bench  ./bench               [.] clearNurseries
      0.32%            bench  ./bench               [.]
 scavenge_mutable_list
 }}}

 N.B. Long term we need to make sure that `CLabel`s get the right
 `CLabelType`. Currently labels that point at code often have the
 `DataLabel` type. This is probably due to `TABLES_NEXT_TO_CODE`.

-- 
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/5139#comment:2>
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