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update BUGS, INSTALL, NEWS derived files 

From-SVN: r26556
This commit is contained in:
Craig Burley 1999-04-19 18:43:40 -04:00
parent 1a5cfb80ec
commit 10868c423d
2 changed files with 47 additions and 55 deletions
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29
gcc/f/BUGS
View File

@ -40,7 +40,7 @@ via `http://egcs.cygnus.com/onlinedocs/g77_bugs.html'. Follow the
port, build, and install `g77', see "Problems Installing" in
`egcs/gcc/f/INSTALL'.
The following information was last updated on 1999-04-03:
The following information was last updated on 1999-04-20:
* Automatic arrays possibly aren't working on HP-UX systems, at
least in HP-UX version 10.20. Writing into them apparently causes
@ -152,33 +152,6 @@ port, build, and install `g77', see "Problems Installing" in
targets, and front ends like `g77' should take advantage of this
when it becomes available.
* The x86 target's `-malign-double' option no longer reliably aligns
double-precision variables and arrays when they are placed in the
stack frame.
This can significantly reduce the performance of some applications,
even on a run-to-run basis (that is, performance measurements can
vary fairly widely depending on whether frequently used variables
are properly aligned, and that can change from one program run to
the next, even from one procedure call to the next).
Versions 0.5.22 and earlier of `g77' included a patch to `gcc'
that enabled this, but that patch has been deemed an improper
(probably buggy) one for version 2.8 of `gcc' and for `egcs'.
Note that version 1.1 of `egcs' aligns double-precision variables
and arrays when they are in static storage even if
`-malign-double' is not specified.
There is ongoing investigation into how to make `-malign-double'
work properly, also into how to make it unnecessary to get all
double-precision variables and arrays aligned when such alignment
would not violate the relevant specifications for processor and
inter-procedural interfaces.
For a suite of programs to test double-precision alignment, see
`ftp://alpha.gnu.org/gnu/g77/align/'.
* The `libf2c' routines that perform some run-time arithmetic on
`COMPLEX' operands were modified circa version 0.5.20 of `g77' to
work properly even in the presence of aliased operands.

73
gcc/f/NEWS
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@ -66,7 +66,7 @@ about previous `g77' versions up-to-date.
the mainline, development version of `g77' within `egcs') is available
at `http://egcs.cygnus.com/onlinedocs/g77_news.html'.
The following information was last updated on 1999-04-03:
The following information was last updated on 1999-04-20:
In `egcs' 1.2 (versus 1.1.2):
=============================
@ -82,7 +82,11 @@ In `egcs' 1.2 (versus 1.1.2):
where J is other than default `INTEGER' (such as `INTEGER*2').
Instead, it issues a diagnostic.
3. The `-ax' option is now obeyed when compiling Fortran programs.
3. Fix `g77' so it properly handles `DATA A/RPT*VAL/', where RPT is
not default `INTEGER', such as `INTEGER*2', instead of producing a
spurious diagnostic.
4. The `-ax' option is now obeyed when compiling Fortran programs.
(It is passed to the `f771' driver.)
* Source file names with the suffixes `.FOR' and `.FPP' now are
@ -95,7 +99,7 @@ In `egcs' 1.2 (versus 1.1.2):
references to the implementations of these intrinsics using the
`EXTERNAL' mechanism (which would avoid the new warnings).
4. `g77' now warns about a reference to a function when the
5. `g77' now warns about a reference to a function when the
corresponding *subsequent* function program unit disagrees with
the reference concerning the type of the function.
@ -106,8 +110,23 @@ In `egcs' 1.2 (versus 1.1.2):
* The `-malign-double' option now reliably aligns *all*
double-precision variables and arrays on Intel x86 targets.
5. Improve documentation and indexing, including information on Year
2000 (Y2K) compliance.
* Even without the `-malign-double' option, `g77' reliably aligns
local double-precision variables that are not in `EQUIVALENCE'
areas and not `SAVE''d.
* A substantial portion of the `g77' front end's code-generation
component was rewritten. It now generates code using facilities
more robustly supported by the `gcc' back end. One effect of this
rewrite is that some codes no longer produce a spurious "label LAB
used before containing binding contour" message.
* Support for the `-fugly' option has been removed.
6. Improve documentation and indexing, including information on Year
2000 (Y2K) compliance, and providing more information on internals
of the front end.
7. Upgrade to `libf2c' as of 1999-03-17.
In 0.5.24 and `egcs' 1.1.2 (versus 0.5.23 and 1.1.1):
=====================================================
@ -149,14 +168,14 @@ In 0.5.24 and `egcs' 1.1.1 (versus 0.5.23 and 1.1):
In `egcs' 1.1 (versus 0.5.24):
==============================
6. Fix `g77' crash compiling code containing the construct
8. Fix `g77' crash compiling code containing the construct
`CMPLX(0.)' or similar.
7. Fix `g77' crash (or apparently infinite run-time) when compiling
9. Fix `g77' crash (or apparently infinite run-time) when compiling
certain complicated expressions involving `COMPLEX' arithmetic
(especially multiplication).
8. Fix a code-generation bug that afflicted Intel x86 targets when
10. Fix a code-generation bug that afflicted Intel x86 targets when
`-O2' was specified compiling, for example, an old version of the
`DNRM2' routine.
@ -172,25 +191,25 @@ In `egcs' 1.1 (versus 0.5.24):
In `egcs' 1.1 (versus `egcs' 1.0.3):
====================================
9. Fix bugs in the `libU77' intrinsic `HostNm' that wrote one byte
11. Fix bugs in the `libU77' intrinsic `HostNm' that wrote one byte
beyond the end of its `CHARACTER' argument, and in the `libU77'
intrinsics `GMTime' and `LTime' that overwrote their arguments.
10. Assumed arrays with negative bounds (such as `REAL A(-1:*)') no
12. Assumed arrays with negative bounds (such as `REAL A(-1:*)') no
longer elicit spurious diagnostics from `g77', even on systems
with pointers having different sizes than integers.
This bug is not known to have existed in any recent version of
`gcc'. It was introduced in an early release of `egcs'.
11. Valid combinations of `EXTERNAL', passing that external as a dummy
13. Valid combinations of `EXTERNAL', passing that external as a dummy
argument without explicitly giving it a type, and, in a subsequent
program unit, referencing that external as an external function
with a different type no longer crash `g77'.
12. `CASE DEFAULT' no longer crashes `g77'.
14. `CASE DEFAULT' no longer crashes `g77'.
13. The `-Wunused' option no longer issues a spurious warning about
15. The `-Wunused' option no longer issues a spurious warning about
the "master" procedure generated by `g77' for procedures
containing `ENTRY' statements.
@ -215,25 +234,25 @@ In `egcs' 1.1 (versus `egcs' 1.0.3):
`libf2c' environment, even when `libf2c' (now `libg2c') is a
shared library.
14. `g77' no longer installs the `f77' command and `f77.1' man page in
16. `g77' no longer installs the `f77' command and `f77.1' man page in
the `/usr' or `/usr/local' heirarchy, even if the `f77-install-ok'
file exists in the source or build directory. See the
installation documentation for more information.
15. `g77' no longer installs the `libf2c.a' library and `f2c.h'
17. `g77' no longer installs the `libf2c.a' library and `f2c.h'
include file in the `/usr' or `/usr/local' heirarchy, even if the
`f2c-install-ok' or `f2c-exists-ok' files exist in the source or
build directory. See the installation documentation for more
information.
16. The `libf2c.a' library produced by `g77' has been renamed to
18. The `libf2c.a' library produced by `g77' has been renamed to
`libg2c.a'. It is installed only in the `gcc' "private" directory
heirarchy, `gcc-lib'. This allows system administrators and users
to choose which version of the `libf2c' library from `netlib' they
wish to use on a case-by-case basis. See the installation
documentation for more information.
17. The `f2c.h' include (header) file produced by `g77' has been
19. The `f2c.h' include (header) file produced by `g77' has been
renamed to `g2c.h'. It is installed only in the `gcc' "private"
directory heirarchy, `gcc-lib'. This allows system administrators
and users to choose which version of the include file from
@ -245,11 +264,11 @@ In `egcs' 1.1 (versus `egcs' 1.0.3):
than the one built and installed as part of the same `g77' version
is picked up.
18. During the configuration and build process, `g77' creates
20. During the configuration and build process, `g77' creates
subdirectories it needs only as it needs them. Other cleaning up
of the configuration and build process has been performed as well.
19. `install-info' now used to update the directory of Info
21. `install-info' now used to update the directory of Info
documentation to contain an entry for `g77' (during installation).
* Some diagnostics have been changed from warnings to errors, to
@ -258,28 +277,28 @@ In `egcs' 1.1 (versus `egcs' 1.0.3):
in the `OPEN', `INQUIRE', `READ', and `WRITE' statements, and
about truncations of various sorts of constants.
20. Improve compilation of `FORMAT' expressions so that a null byte is
22. Improve compilation of `FORMAT' expressions so that a null byte is
appended to the last operand if it is a constant. This provides a
cleaner run-time diagnostic as provided by `libf2c' for statements
like `PRINT '(I1', 42'.
21. Improve documentation and indexing.
23. Improve documentation and indexing.
22. The upgrade to `libf2c' as of 1998-06-18 should fix a variety of
24. The upgrade to `libf2c' as of 1998-06-18 should fix a variety of
problems, including those involving some uses of the `T' format
specifier, and perhaps some build (porting) problems as well.
In 0.5.24 and `egcs' 1.1 (versus 0.5.23):
=========================================
23. `g77' no longer produces incorrect code and initial values for
25. `g77' no longer produces incorrect code and initial values for
`EQUIVALENCE' and `COMMON' aggregates that, due to "unnatural"
ordering of members vis-a-vis their types, require initial padding.
24. `g77' no longer crashes when compiling code containing
26. `g77' no longer crashes when compiling code containing
specification statements such as `INTEGER(KIND=7) PTR'.
25. `g77' no longer crashes when compiling code such as `J = SIGNAL(1,
27. `g77' no longer crashes when compiling code such as `J = SIGNAL(1,
2)'.
* `g77' now treats `%LOC(EXPR)' and `LOC(EXPR)' as "ordinary"
@ -310,9 +329,9 @@ In 0.5.24 and `egcs' 1.1 (versus 0.5.23):
* The F90 `System_Clock' intrinsic allows the optional arguments
(except for the `Count' argument) to be omitted.
26. Upgrade to `libf2c' as of 1998-06-18.
28. Upgrade to `libf2c' as of 1998-06-18.
27. Improve documentation and indexing.
29. Improve documentation and indexing.
In previous versions:
=====================