XL Fortran Enterprise Edition for AIX : User's Guide - IBM

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Attribute and Cross-Reference Section This section provides information about the entities that are used in the compilation unit. It is present if the -qxref or -qattr compiler option is in effect. Depending on the options in effect, this section contains all or part of the following information about the entities that are used in the compilation unit: v v v Names of the entities Attributes of the entities (if -qattr is in effect). Attribute information may include any or all of the following details: – The type – The class of the name – The relative address of the name – Alignment – Dimensions – For an array, whether it is allocatable – Whether it is a pointer, target, or integer pointer – Whether it is a parameter – Whether it is volatile – For a dummy argument, its intent, whether it is value, and whether it is optional – Private, public, protected, module Coordinates to indicate where you have defined, referenced, or modified the entities. If you declared the entity, the coordinates are marked with a $. If you initialized the entity, the coordinates are marked with a *. If you both declared and initialized the entity at the same place, the coordinates are marked with a &. If the entity is set, the coordinates are marked with a @. If the entity is referenced, the coordinates are not marked. Class is one of the following: v Automatic v BSS (uninitialized static internal) v Common v Common block v Construct name v Controlled (for an allocatable object) v Controlled automatic (for an automatic object) v Defined assignment v Defined operator v Derived type definition v Entry v External subprogram v Function v Generic name v Internal subprogram v Intrinsic v Module v Module function v Module subroutine v Namelist v Pointee v Private component v Program v Reference parameter v Renames v Static v Subroutine 392 XL Fortran Enterprise Edition for AIX : User’s Guide
v v Use associated Value parameter Object Section File Table Section Type is one of the following: v Byte v Character v Complex v Derived type v Integer v Logical v Real If you specify the full suboption with -qxref or -qattr, XL Fortran reports all entities in the compilation unit. If you do not specify this suboption, only the entities you actually use appear. XL Fortran produces this section only when the -qlist compiler option is in effect. It contains the object code listing, which shows the source line number, the instruction offset in hexadecimal notation, the assembler mnemonic of the instruction, and the hexadecimal value of the instruction. On the right side, it also shows the cycle time of the instruction and the intermediate language of the compiler. Finally, the total cycle time (straight-line execution time) and the total number of machine instructions that are produced are displayed. There is a separate section for each compilation unit. This section contains a table that shows the file number and file name for each main source file and include file used. It also lists the line number of the main source file at which the include file is referenced. This section is always present. Compilation Unit Epilogue Section Compilation Epilogue Section This is the last section of the listing for each compilation unit. It contains the diagnostics summary and indicates whether the unit was compiled successfully. This section is not present in the listing if the file contains only one compilation unit. The compilation epilogue section occurs only once at the end of the listing. At completion of the compilation, XL Fortran presents a summary of the compilation: number of source records that were read, compilation start time, compilation end time, total compilation time, total CPU time, and virtual CPU time. This section is always present in a listing. Related Information: Sample programs are shown in Appendix A, “Sample Fortran Programs,” on page 405. Understanding XL Fortran Compiler Listings 393
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XL Fortran Enterprise Edition for A
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Note! Before using this information
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Options That Control Listings and M
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How XLF I/O Interacts with Pipes, S
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viii XL Fortran Enterprise Edition
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x XL Fortran Enterprise Edition for
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The following performance-related d
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How to Read the Syntax Diagrams and
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v Optionally, enter the value of at
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6 XL Fortran Enterprise Edition for
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Migration Support The XL Fortran co
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These items are located, or accesse
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v /usr/share/man/info/en_US/xlf/pos
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Notes: 1. Specifying the LC_ALL env
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3. Installing a compiler program te
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fsuffix cppsuffix osuffix ssuffix l
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mcrt = /lib/mcrt0_r.o gcrt = /lib/g
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options include -L/usr/lpp/xlf/lib,
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Related Information: You can use th
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Table 1. Potential Problems Migrati
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Table 1. Potential Problems Migrati
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►► xlf90 xlf90_r xlf90_r7 xlf95
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xlf90, xlf90_r, and xlf90_r7 comman
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Related Information: The ssuffix at
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Related Information: See “-qpdf O
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The @PROCESS compiler directive mus
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Passing Fortran Files through the C
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the trigraph sequence. XL Fortran u
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The configuration file /etc/xlf.cfg
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esulting program work as you expect
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v v Do not use names that are the s
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v v Build the application by using
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If you have applications in which F
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total_usertime Returns the total us
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To obtain support for items that ar
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Note: You may need the old setting
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These partitions are then assigned
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During the busy-wait search for wor
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(for example, loops for which you s
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Other Environment Variables That Af
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Options That Control Input to the C
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Table 3. Options That Control Input
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Table 5. Options for Performance Op
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Table 5. Options for Performance Op
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Table 6. Options for Debugging and
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Table 7. Options That Control Listi
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Table 8. Options for Compatibility
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v v Determine names and options for
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Detailed Descriptions of the XL For
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-1 Option Syntax -1 ONETRIP | NOONE
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-b64 Option Syntax -b64 The AIX ope
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Examples xlf95 f.f -brtl -bshared -
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-bloadmap Option Syntax -bloadmap:n
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-brtl Option Syntax -brtl | -bnortl
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-bstatic Option Related Information
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-c Option Syntax -c Prevents the co
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-d Option Syntax -d Causes preproce
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-g Option Syntax -g DBG | NODBG Gen
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-k Option Syntax -k FREE(F90) Speci
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-l Option Syntax -lkey Searches the
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-O Option Syntax -O[level] OPTimize
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-o Option Syntax -o name Specifies
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-p Option Syntax -p[g] Sets up the
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-q32 Option Related Information See
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-qalias Option Syntax -qalias={[no]
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equivalence (a, b(3)) t = b; a = t
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a derived type are stored with suff
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pwr2s p2sc You can run the executab
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v v If your primary concern is exec
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-qassert Option Syntax -qassert={de
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-qautodbl Option Syntax -qautodbl=s
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Related Information For background
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2 Level-2 cache or the table lookas
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-qcheck Option Syntax -qcheck | -qn
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-qcompact Option Syntax -qcompact |
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-qctyplss Option Syntax -qctyplss[(
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-qdbg Option Syntax -qdbg | -qnodbg
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-qdirective Option Syntax -qdirecti
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-qdirectstorage Option Syntax -qdir
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-qdpc Option Syntax -qdpc[=e] | -qn
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-qescape Option Syntax -qescape | -
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-qextchk Option Syntax -qextchk | -
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-qextname Option Syntax -qextname[=
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-qfdpr Option Syntax -qfdpr | -qnof
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-qflag Option Syntax -qflag=listing
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the reciprocal of the divisor. It a
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export SQRT_EXCEPTION=3.1 166 XL Fo
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-qfree Option Syntax -qfree[={f90|i
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-qhalt Option Syntax -qhalt=severit
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If you specify -qhot=novector, the
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-qhssngl Option Syntax -qhssngl | -
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-qinit Option Syntax -qinit=f90ptr
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v You can specify alphabetic digits
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-qintsize Option Syntax -qintsize=b
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-qipa Option Syntax -qipa[=suboptio
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If you specify short, the Object Fi
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Table 15. Regular expression syntax
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-qkeepparm Option Syntax -qkeepparm
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Restrictions The -qflag option can
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-qlibansi Option Related Informatio
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-qlibposix Option Related Informati
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-qlistopt Option Syntax -qlistopt |
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-qlog4 Option Syntax -qlog4 | -qnol
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Restrictions Depending on the sourc
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-qmixed Option Syntax -qmixed | -qn
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-qmodule Option Syntax -qmodule=man
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-qnullterm Option Syntax -qnullterm
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-qonetrip Option Syntax -qonetrip |
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-qpdf Option Syntax -qpdf{1|2} Tune
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mergepdf Generates a single pdf rec
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-qphsinfo Option Syntax -qphsinfo |
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-qpic Option Syntax -qpic[=suboptio
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sce | nosce } else if (a == 3) *res
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-qprefetch Option Syntax -qprefetch
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-qrealsize Option Syntax -qrealsize
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-qrecur Option Syntax -qrecur | -qn
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To produce a listing file that you
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-qsave Option Syntax -qsave[={all|d
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-qsclk Option Syntax -qsclk[=centi
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-qsigtrap Option Syntax -qsigtrap[=
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-qsmp Option Syntax -qsmp[=suboptio
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threshold=n The work in a partition
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xlf90 -qsmp=noopt -O3... is equival
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-qspillsize Option Syntax -qspillsi
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-qstrictieeemod Option Syntax -qstr
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-qsuffix Option Syntax -qsuffix=opt
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Examples @process nullterm i = 1; j
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Related Information See the OpenMP
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-qthreaded Option Syntax -qthreaded
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If you do not specify -qtune, its s
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-qundef Option Syntax -qundef | -qn
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-qunwind Option Syntax -qunwind |-q
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-qwarn64 Option See “-qwarn64 Opt
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-qxflag=xalias Option Syntax -qxfla
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intxor | nointxor Treats .XOR. as a
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Examples Consider the following pro
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In this example, conditional compil
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-qzerosize Option Syntax -qzerosize
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-t Option Syntax -tcomponents Appli
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-u Option Syntax -u UNDEF | NOUNDEF
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-V Option Syntax -V This option is
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$ ./a.out 1 2 3 4 276 XL Fortran En
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-y Option Syntax -y{n | m | p | z}
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64-Bit Thread Support On AIX Versio
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-q64 Option Syntax -q64[=largetype]
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-qwarn64 Option Syntax -qwarn64 | -
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286 XL Fortran Enterprise Edition f
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v v If the data or program code con
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v Comparisons involving NaN values
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How XL Fortran Rounds Floating-Poin
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2. For thread-safety and reentrancy
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v The fltint suboption speeds up fl
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There are other related operating s
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Another method is to use the ieee_s
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call fpgets(fpstat) fpstat(fpox) =
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The following example shows the dif
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v Code that might cause an exceptio
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Optimization levels Option -qnoopt/
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v -qcache=auto Optimization level -
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v v v Reducing the costs of memory
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Loop unrolling also increases code
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2. Run the application using a typi
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# Let the compiler decide (relative
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can also use the SNAPSHOT directive
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-qipa=list cross-file type checking
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324 XL Fortran Enterprise Edition f
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Stream-access formatted files: A re
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I/O Redirection The important thing
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Default Record Lengths File Permiss
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XLFRTEOPTS="unit_vars=yes" # Allow
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Logical Volume I/O To use a logical
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READ(unit_number,ID=idvar) a .... W
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450 end do close(20) end Performanc
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Table 22. Table for Binding an Appl
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Page 360 and 361: v v The XL compilers generate code
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Page 364 and 365: Notes: 1. In interlanguage communic
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Page 368 and 369: You can use this built-in function
Page 370 and 371: The system linkage convention passe
Page 372 and 373: Run-time Stack for 32-bit Environme
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Page 376 and 377: v v v v v v v In a 32-bit Environme
Page 378 and 379: Will Be Passed In: R3 0 Storage Map
Page 380 and 381: Function Values Functions return th
Page 382 and 383: Example The control structure has t
Page 384 and 385: technique can reduce the amount of
Page 386 and 387: Note: When you run an XL Fortran pr
Page 388 and 389: Duplicating Extensions from Other S
Page 390 and 391: Input/Output Errors If the error de
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Page 394 and 395: 7. The next step is to research why
Page 396 and 397: Note that you cannot use the -qextn
Page 398 and 399: v v Memory leak reporting that indi
Page 400 and 401: HD_FILL HD_STACK=n called a certain
Page 402 and 403: 388 XL Fortran Enterprise Edition f
Page 404 and 405: Source Section The source section c
Page 410 and 411: Automating Large, Complex Compilati
Page 412 and 413: For fixed source form code, in addi
Page 414 and 415: Common Industry Extensions That XL
Page 420 and 421: Example 2 - Valid C Routine Source
Page 422 and 423: close(10) open(10, file="fun10.out"
Page 424 and 425: !**********************************
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Page 428 and 429: Examples of Storage Relationships f
Page 430 and 431: 0 4 8 16 32 64 COMPLEX (16) COMPLEX
Page 432 and 433: ! Data values between r8 and x16 ar
Page 434 and 435: end function sqrt real*8 function r
Page 436 and 437: Table 34. MASS Vector Library Funct
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Page 446 and 447: ind. To relate an identifier to ano
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Page 450 and 451: name. A lexical token consisting of
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.profile file 12 .s files 33, 34 .X
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fdate_ service and utility subprogr
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nonested_par suboption of -qsmp 234
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vi text editor 29 W W error severit
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