4 KAP Command Qualifiers

This chapter describes KAP C command qualifiers that allow you to alter KAP defaults.

You will frequently be satisfied with the default qualifier settings of KAP C. However, you can alter default settings to customize optimizations for a given application program and machine. These include limiting the search space for loop optimization, adjusting the parameters that describe cache memory, and enabling or disabling classes of transformations.

Command qualifiers are qualifiers requested on the command line when submitting a KAP job, rather than in the source file.

To specify a command qualifier, you can use the long name or short name. If a command qualifier appears more than once on the command line, the last value given is used. Multiple occurrences of an input/output file selection qualifier are not allowed. Table 4-1 lists the command qualifiers. The first column lists the long name of each qualifier. This column also lists the functional categories of qualifiers: general optimization, parallel processing, inlining and Interprocedural Analysis, advanced optimization control, input/output files, and listing. The next two columns list the short name and default value of each qualifier. Qualifiers that have different argument syntax in their regular and negative (no) forms are shown on two lines.

A slash (/) is required before each qualifier listed in the following table, but the slash is not shown in the table.

Table 4-1 Command-Line Qualifiers

Long Name  Related Qualifier  Short Name  Default Value 
General Optimization       
[no]interchange      interchange 
namepartitioning= <integer>,<integer>  so  namepart= <integer>,<integer>  nonamepartitioning 
optimize=<integer>    o=<integer>  optimize=5 
recursion    rc  nrc 
roundoff=<integer>  o, so  r=<integer>  roundoff=3 
routine= <routine_name>/<limited qualifiers>  See text  rt=<routine_name>/<limited qualifiers>  noroutine 
scalaropt=<integer>  so=<integer>  scalaropt=3 
skip    sk  nosk 
tune=<architecture>    tune=<architecture>  tune=<architecture> 
Parallel Processing Qualifiers       
[no]concurrentize    [n]conc  noconcurrentize 
minconcurrent=<integer>    mc  minconcurrent=1000 
Inlining and IPA       
inline[=<names>]    inl[=<names>]  off 
noinline[=<names>]    ninl[=<names>]   
ipa[=<names>]    ipa[=<names>]  off 
noipa[=<names>]    nipa[=<names>]   
inline_and_copy=<names>    inlc=<names>  off 
inline_create=<file>    incr=<file>  off 
ipa_create=<file>    ipacr=<file>  off 
inline_depth=<integer>    ind=<integer>  ind=2 
ipa_depth=<integer>    ipad=<integer>  ipad=2 
inline_ from_files=<file>,<file>  inl  inff=<file>,<file>  current source file 
ipa_from_ files=<file>,<file>  ipa  ipaff=<file>,<file>  current source file 
inline_from_ libraries=<library>, <library>  inl  infl=<library>, <library>  off 
ipa_from_ libraries=<library>,<library>  ipa  ipafl=<library>, <library>  off 
inline_looplevel=<integer>    inll=<integer>  inll=2 
ipa_ looplevel=<integer>    ipall=<integer>  ipall=2 
inline_manual    inm  off 
ipa_manual    ipam  off 
inline_optimize=<integer>      inline_ optimize=0 
ipa_ optimize=<integer>      ipa_optimize=0 
Input- Output       
cmp[=<file>]    cmp[=<file>]  See Section 4.6.1 
nocmp    ncmp   
list[=<file>]    l[=<file>]  nl 
nolist    nl   
cmpoptions[=<list>]    cp[=<list>]  ncp 
nocmpoptions    ncp   
lines=<integer>    ln=<integer>  ln=55 
listingwidth=<integer>    lw=<integer>  lw=132 
listoptions=<list>    lo=<list>  See Section 4.7.4 
Language Qualifiers       
[no]natural    [n]nat  nat 
signed    signed  See Section 4.4.2 
Advanced Optimization        
addressresolution=<integer>  so, r  arl=<integer>  arl=1 
[no]arclimit=<integer>  so, r  arclm=<integer>  arclm=5000 
cacheline=<integer>[,<integer>]    chl=<integer> [,<integer>]  chl=32,32 
cache_prefetch_line_count= <integer>    cplc=<integer>  cplc=0 
cachesize=<integer>[,<integer>]    chs=<integer> [,<integer>]  chs=8,0 
dpregisters=<integer>    dpr=<integer>  dpr=32 
each_invariant_if_ growth=<integer>  so, r, miifg  eiifg=<integer>  eiifg=20 
fpregisters=<integer>    fpr=<integer>  fpr=32 
[no]fuse  so,o  fuse  nofuse 
fuselevel=<integer>  fuse  =<integer>  fuselevel=0 
heaplimit=<integer>    heap=<integer>  heaplimit=100 
limit=<integer>    lm=<integer>  lm=50 
machine=<list>  so, r  ma=<list>  ma=s 
max_invariant_if_ growth=<integer>  so, r, eiifg  miifg=<integer>  miifg=500 
setassociativity=<integer>  so, r  sasc=<integer>  sasc=1 
stdio  so, r  stdio  off 
syntax=<list>    sy=<list>  sy=d 
unroll=<integer>  so, r  ur=<integer>  ur=4 
unroll2=<integer>  so, r  ur2=<integer>  ur2=160 
unroll3=<integer>  so, r  ur3=<integer>  ur3=1 

The subheadings in the following sections list the long and short names for each qualifier, followed by its default in parentheses.

Unless otherwise noted, the code examples in this chapter were run with /optimize=5, /scalaropt=2, /roundoff=2 , and /unroll=1 .

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Command-Line Qualifiers