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locks; strict;
comment	@# @;


1.2
date	2009.01.24.12.17.08;	author gerald;	state dead;
branches;
next	1.1;

1.1
date	98.08.13.17.55.40;	author obrien;	state Exp;
branches;
next	;


desc
@@


1.2
log
@Remove lang/gcc28 (GCC 2.8) which has been DEPRECATED for more than
3 years and does not build anywhere.

No objections:	mjl@@luckie.org.nz (maintainer), pav
@
text
@--- invoke.texi.orig	Tue Feb 17 10:54:05 1998
+++ invoke.texi	Tue Aug 11 13:29:38 1998
@@@@ -115,7 +115,7 @@@@
 @@smallexample
 -fsyntax-only  -pedantic  -pedantic-errors
 -w  -W  -Wall  -Waggregate-return  -Wbad-function-cast
--Wcast-align  -Wcast-qual  -Wchar-subscript  -Wcomment
+-Wcast-align  -Wcast-qual  -Wchar-subscripts  -Wcomment
 -Wconversion  -Werror  -Wformat
 -Wid-clash-@@var{len}  -Wimplicit -Wimplicit-int 
 -Wimplicit-function-declarations -Wimport  -Winline
@@@@ -153,6 +153,7 @@@@
 -frerun-cse-after-loop  -fschedule-insns
 -fschedule-insns2  -fstrength-reduce  -fthread-jumps
 -funroll-all-loops  -funroll-loops
+-fmove-all-movables  -freduce-all-givs  -frerun-loop-opt
 -O  -O0  -O1  -O2  -O3
 @@end smallexample
 
@@@@ -2284,6 +2285,47 @@@@
 Perform the optimization of loop unrolling.  This is done for all loops
 and usually makes programs run more slowly.  @@samp{-funroll-all-loops}
 implies @@samp{-fstrength-reduce} as well as @@samp{-frerun-cse-after-loop}.
+
+@@item -fmove-all-movables
+Forces all invariant computations in loops to be moved
+outside the loop.
+This option is provided primarily to improve performance
+for some Fortran code, though it might improve code written
+in other languages.
+
+@@emph{Note:} When compiling programs written in Fortran,
+this option is enabled by default.
+
+Analysis of Fortran code optimization and the resulting
+optimizations triggered by this option, and the
+@@samp{-freduce-all-givs} and @@samp{-frerun-loop-opt}
+options as well, were
+contributed by Toon Moene (@@code{toon@@@@moene.indiv.nluug.nl}).
+
+Please let us (@@code{fortran@@@@gnu.ai.mit.edu})
+know how use of these options affects
+the performance of your production code.
+We're very interested in code that runs @@emph{slower}
+when these options are @@emph{enabled}.
+
+@@item -freduce-all-givs
+Forces all general-induction variables in loops to be
+strength-reduced.
+This option is provided primarily to improve performance
+for some Fortran code, though it might improve code written
+in other languages.
+
+@@emph{Note:} When compiling programs written in Fortran,
+this option is enabled by default.
+
+@@item -frerun-loop-opt
+Runs loop optimizations a second time.
+This option is provided primarily to improve performance
+for some Fortran code, though it might improve code written
+in other languages.
+
+@@emph{Note:} When compiling programs written in Fortran,
+this option is enabled by default.
 
 @@item -fno-peephole
 Disable any machine-specific peephole optimizations.
@


1.1
log
@* Minor bug fixes from OpenBSD (and some stuff to ease diff'ing in the future)
* Some initial support for FreeBSD-alpha
* Add some optimizations required by g77, which still might be of some use
  to adventuring C/C++ programmers.

Obtained from:	OpenBSD (parts)
@
text
@@

