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JCB updates.
From-SVN: r19874
This commit is contained in:
Dave Love
parent
4a26588bfa
commit
0063c7779b
@ -5,7 +5,7 @@
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@c The text of this file appears in the file BUGS
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@c in the G77 distribution, as well as in the G77 manual.
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@c 1998-03-17
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@c 1998-05-17
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@ifclear BUGSONLY
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@node Actual Bugs
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@ -34,12 +34,6 @@ statements as the terminal statement, using the @code{END DO}
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form instead, and so on.
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(Probably improved, but not wholly fixed, in 0.5.21.)
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@item
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The @code{g77} command itself should more faithfully process
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options the way the @code{gcc} command does.
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For example, @code{gcc} accepts abbreviated forms of long options,
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@code{g77} generally doesn't.
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@item
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Some confusion in diagnostics concerning failing @code{INCLUDE}
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statements from within @code{INCLUDE}'d or @code{#include}'d files.
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@ -171,30 +165,6 @@ is the potential, with the current setup, for interface differences
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in the way such areas are laid out between @code{g77} and other
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compilers.
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@cindex Alpha, support
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@cindex support, Alpha
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@item
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@code{g77} doesn't work perfectly on 64-bit configurations such as the Alpha.
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This problem is expected to be largely resolved as of version 0.5.20,
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and further addressed by 0.5.21.
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Version 0.6 should solve most or all related problems (such as
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64-bit machines other than Digital Semiconductor (``DEC'') Alphas).
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One known bug that causes a compile-time crash occurs when compiling
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code such as the following with optimization:
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@example
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SUBROUTINE CRASH (TEMP)
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INTEGER*2 HALF(2)
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REAL TEMP
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HALF(1) = NINT (TEMP)
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END
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@end example
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It is expected that a future version of @code{g77} will have a fix for this
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problem, almost certainly by the time @code{g77} supports
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version 2.8 of @code{gcc}.
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@cindex COMPLEX support
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@cindex support, COMPLEX
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@item
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149
gcc/f/g77.texi
149
gcc/f/g77.texi
@ -11,6 +11,9 @@
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}
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@end tex
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@set last-up-date 1998-04-20
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@set version-g77 0.5.23
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@c %**start of header
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@setfilename g77.info
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@c @setfilename useg77.info
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@ -102,16 +105,16 @@ was contributed to Craig by David Ronis (@email{ronis@@onsager.chem.mcgill.ca}).
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@sp 2
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@center James Craig Burley
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@sp 3
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@center Last updated 1998-04-18
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@center Last updated @value{last-up-date}
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@sp 1
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@c The version number appears some more times in this file.
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@center for version 0.5.21
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@center for version @value{version-g77}
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@page
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@vskip 0pt plus 1filll
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Copyright @copyright{} 1995-1997 Free Software Foundation, Inc.
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@sp 2
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For GNU Fortran Version 0.5.21*
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For GNU Fortran Version @value{version-g77}*
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@sp 1
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Published by the Free Software Foundation @*
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59 Temple Place - Suite 330@*
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@ -156,19 +159,19 @@ original English.
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@ifset USING
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This manual documents how to run, install and port the GNU Fortran
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compiler, as well as its new features and incompatibilities, and how to
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report bugs. It corresponds to GNU Fortran version 0.5.21.
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report bugs. It corresponds to GNU Fortran version @value{version-g77}.
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@end ifset
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@end ifset
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@ifclear INTERNALS
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This manual documents how to run and install the GNU Fortran compiler,
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as well as its new features and incompatibilities, and how to report
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bugs. It corresponds to GNU Fortran version 0.5.21.
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bugs. It corresponds to GNU Fortran version @value{version-g77}.
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@end ifclear
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@ifclear USING
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This manual documents how to port the GNU Fortran compiler,
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as well as its new features and incompatibilities, and how to report
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bugs. It corresponds to GNU Fortran version 0.5.21.
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bugs. It corresponds to GNU Fortran version @value{version-g77}.
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@end ifclear
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@end ifinfo
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@ -3289,6 +3292,121 @@ or, if you cannot do that, email
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@email{fortran@@gnu.org} asking for a recent copy of the
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GNU Fortran @file{.plan} file.
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@heading In 0.5.23:
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@itemize @bullet
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@item
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This release contains several regressions against
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version 0.5.22 of @code{g77}, due to using the
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``vanilla'' @code{gcc} back end instead of patching
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it to fix a few bugs and improve performance in a
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few cases.
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@xref{Actual Bugs,,Actual Bugs We Haven't Fixed Yet},
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available in plain-text format in @code{gcc/f/BUGS},
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for information on the known bugs in this version,
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including the regressions.
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Features that have been dropped from this version
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of @code{g77} due to their being implemented
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via @code{g77}-specific patches to the @code{gcc}
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back end in previous releases include:
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@itemize --
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@item
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Support for @code{__restrict__} keyword,
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the options @samp{-fargument-alias}, @samp{-fargument-noalias},
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and @samp{-fargument-noalias-global},
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and the corresponding alias-analysis code.
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(Version 1.0.1 of @code{egcs} has the alias-analysis
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code, but not the @code{__restrict__} keyword.
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@code{g77} users benefit from the alias-analysis
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code despite the lack of the @code{__restrict__} keyword,
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which is a C-language construct.)
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@item
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Support for the GNU compiler options
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@samp{-fmove-all-movables},
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@samp{-freduce-all-givs},
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and @samp{-frerun-loop-opt}.
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(Version 1.0.1 of @code{egcs} supports these options.
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@code{g77} users of @code{egcs} benefit from them even if
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they are not explicitly specified,
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because the defaults are optimized for @code{g77} users.)
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@item
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Support for the @samp{-W} option warning about
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integer division by zero.
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@end itemize
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@item
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Support @code{gcc} version 2.8,
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and remove support for prior versions of @code{gcc}.
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@cindex -@w{}-driver option
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@cindex g77 options, -@w{}-driver
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@cindex options, -@w{}-driver
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@item
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Remove support for the @samp{--driver} option,
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as @code{g77} now does all the driving,
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just like @code{gcc}.
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@item
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The @code{g77} command now expects the run-time library
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to be named @code{libg2c.a} instead of @code{libf2c.a},
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to ensure that a version other than the one built and
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installed as part of the same @code{g77} version is picked up.
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@end itemize
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@heading In 0.5.22:
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@itemize @bullet
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@item
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Fix @code{SIGNAL} intrinsic so it offers portable
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support for 64-bit systems (such as Digital Alphas
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running GNU/Linux).
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@item
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Support @samp{FORMAT(I<@var{expr}>)} when @var{expr} is a
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compile-time constant @code{INTEGER} expression.
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@item
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Fix @code{g77} @samp{-g} option so procedures that
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use @samp{ENTRY} can be stepped through, line by line,
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in @code{gdb}.
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@item
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Allow any @code{REAL} argument to intrinsics
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@code{Second} and @code{CPU_Time}.
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@item
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Allow any numeric argument to intrinsics
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@code{Int2} and @code{Int8}.
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@item
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Use @code{tempnam}, if available, to open scratch files
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(as in @samp{OPEN(STATUS='SCRATCH')}
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so that the @code{TMPDIR} environment variable,
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if present, is used.
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@item
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Rename the @code{gcc} keyword @code{restrict} to
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@code{__restrict__}, to avoid rejecting valid, existing,
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C programs.
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Support for @code{restrict} is now more like support
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for @code{complex}.
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@item
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Fix @samp{-fugly-comma} to affect invocations of
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only external procedures.
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Restore rejection of gratuitous trailing omitted
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arguments to intrinsics, as in @samp{I=MAX(3,4,,)}.
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@item
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Fix compiler so it accepts @samp{-fgnu-intrinsics-*} and
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@samp{-fbadu77-intrinsics-*} options.
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@end itemize
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@heading In 0.5.21:
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@itemize @bullet
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@item
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@ -9205,6 +9323,9 @@ savings of resources, such as on systems where @file{/dev/null} or
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@file{/dev/zero} represent bottlenecks in the systems' performance,
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because @code{g77} simply asks for fewer zeros from the operating
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system than @code{f2c}.
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(Avoiding spurious use of zero bytes, each byte typically have
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eight zero bits, also reduces the liabilities in case
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Microsoft's rumored patent on the digits 0 and 1 is upheld.)
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@node Block Data and Libraries
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@section Block Data and Libraries
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@ -12138,22 +12259,6 @@ more detail on these and related command-line options.
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Please consider offering useful answers to these questions!
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@itemize @bullet
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@item
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How do system administrators and users manage multiple incompatible
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Fortran compilers on their systems?
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How can @code{g77} contribute to this, or at least avoiding
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intefering with it?
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Currently, @code{g77} provides rudimentary ways to choose whether to
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overwrite portions of other Fortran compilation systems
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(such as the @code{f77} command and the @code{libf2c} library).
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Is this sufficient?
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What happens when users choose not to overwrite these---does
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@code{g77} work properly in all such installations, picking
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up its own versions, or does it pick up the existing ``alien''
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versions it didn't overwrite with its own, possibly leading
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to subtle bugs?
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@item
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@code{LOC()} and other intrinsics are probably somewhat misclassified.
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Is the a need for more precise classification of intrinsics, and if so,
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124
gcc/f/news.texi
124
gcc/f/news.texi
@ -5,7 +5,7 @@
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@c The text of this file appears in the file BUGS
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@c in the G77 distribution, as well as in the G77 manual.
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@c 1998-03-16
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@c 1998-04-20
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@ifclear NEWSONLY
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@node News
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@ -21,10 +21,11 @@ The changes are generally listed in order:
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@enumerate
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@item
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Code-generation and run-time-library bugs
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Code-generation and run-time-library bug-fixes
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@item
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Compiler and run-time-library crashes involving valid code
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that have been fixed
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@item
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New features
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@ -53,6 +54,125 @@ Miscellany
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This order is not strict---for example, some items
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involve a combination of these elements.
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@heading In 0.5.23:
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@itemize @bullet
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@item
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This release contains several regressions against
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version 0.5.22 of @code{g77}, due to using the
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``vanilla'' @code{gcc} back end instead of patching
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it to fix a few bugs and improve performance in a
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few cases.
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@xref{Actual Bugs,,Actual Bugs We Haven't Fixed Yet},
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available in plain-text format in @code{gcc/f/BUGS},
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for information on the known bugs in this version,
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including the regressions.
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Features that have been dropped from this version
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of @code{g77} due to their being implemented
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via @code{g77}-specific patches to the @code{gcc}
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back end in previous releases include:
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|
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@itemize --
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@item
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Support for @code{__restrict__} keyword,
|
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the options @samp{-fargument-alias}, @samp{-fargument-noalias},
|
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and @samp{-fargument-noalias-global},
|
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and the corresponding alias-analysis code.
|
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|
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(Version 1.0.1 of @code{egcs} has the alias-analysis
|
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code, but not the @code{__restrict__} keyword.
|
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@code{g77} users benefit from the alias-analysis
|
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code despite the lack of the @code{__restrict__} keyword,
|
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which is a C-language construct.)
|
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|
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@item
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Support for the GNU compiler options
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@samp{-fmove-all-movables},
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@samp{-freduce-all-givs},
|
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and @samp{-frerun-loop-opt}.
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|
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(Version 1.0.1 of @code{egcs} supports these options.
|
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@code{g77} users of @code{egcs} benefit from them even if
|
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they are not explicitly specified,
|
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because the defaults are optimized for @code{g77} users.)
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@item
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Support for the @samp{-W} option warning about
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integer division by zero.
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@end itemize
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@item
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Support @code{gcc} version 2.8,
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and remove support for prior versions of @code{gcc}.
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@cindex -@w{}-driver option
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@cindex g77 options, -@w{}-driver
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@cindex options, -@w{}-driver
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@item
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Remove support for the @samp{--driver} option,
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as @code{g77} now does all the driving,
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just like @code{gcc}.
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@item
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@code{CASE DEFAULT} no longer crashes @code{g77}.
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@item
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@code{g77} no longer installs the @file{f77} command
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and @file{f77.1} man page
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in the @file{/usr} or @file{/usr/local} heirarchy,
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even if the @file{f77-install-ok} file exists
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in the source or build directory.
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See the installation documentation for more information.
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@item
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@code{g77} no longer installs the @file{libf2c.a} library
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and @file{f2c.h} include file
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in the @file{/usr} or @file{/usr/local} heirarchy,
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even if the @file{f2c-install-ok} or @file{f2c-exists-ok} files exist
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in the source or build directory.
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See the installation documentation for more information.
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@item
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The @file{libf2c.a} library produced by @code{g77} has been
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renamed to @file{libg2c.a}.
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It is installed only in the @code{gcc} ``private''
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directory heirarchy, @file{gcc-lib}.
|
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This allows system administrators and users to choose which
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version of the @code{libf2c} library from @code{netlib} they
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wish to use on a case-by-case basis.
|
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See the installation documentation for more information.
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@item
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The @file{f2c.h} include (header) file produced by @code{g77}
|
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has been renamed to @file{g2c.h}.
|
||||
It is installed only in the @code{gcc} ``private''
|
||||
directory heirarchy, @file{gcc-lib}.
|
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This allows system administrators and users to choose which
|
||||
version of the include file from @code{netlib} they
|
||||
wish to use on a case-by-case basis.
|
||||
See the installation documentation for more information.
|
||||
|
||||
@item
|
||||
The @code{g77} command now expects the run-time library
|
||||
to be named @code{libg2c.a} instead of @code{libf2c.a},
|
||||
to ensure that a version other than the one built and
|
||||
installed as part of the same @code{g77} version is picked up.
|
||||
|
||||
@item
|
||||
The @samp{-Wunused} option no longer issues a spurious
|
||||
warning about the ``master'' procedure generated by
|
||||
@code{g77} for procedures containing @code{ENTRY} statements.
|
||||
|
||||
@item
|
||||
During the configuration and build process,
|
||||
@code{g77} creates subdirectories it needs only as it
|
||||
needs them, thus avoiding unnecessary creation of, for example,
|
||||
@file{stage1/f/runtime} when doing a non-bootstrap build.
|
||||
Other cleaning up of the configuration and build process
|
||||
has been performed as well.
|
||||
@end itemize
|
||||
|
||||
@heading In 0.5.22:
|
||||
@itemize @bullet
|
||||
@item
|
||||
|
||||
Loading…
Reference in New Issue
Block a user