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|
--- gcc/gcc.1.orig 1999/08/26 09:27:23 1.1.1.2
+++ gcc/gcc.1 1999/09/19 09:00:24 1.14
@@ -1,3 +1,4 @@
+.\" $from_FreeBSD: src/contrib/gcc/gcc.1,v 1.14 1999/09/19 09:00:24 obrien Exp $
.\" Copyright (c) 1991, 1992, 1993, 1994 Free Software Foundation -*-Text-*-
.\" See section COPYING for conditions for redistribution
.\"
@@ -264,6 +265,8 @@
\-O
\-O2
\-O3
+\-O0
+\-Os
.TP
.B Preprocessor Options
.RI \-A assertion
@@ -444,10 +447,25 @@
.Sp
.I i386 Options
.br
+\-m386
\-m486
+\-mpentium
+\-mpentiumpro
\-mno\-486
+\-mcpu=\fIcpu type\fP
+\-march=\fIcpu type\fP
\-msoft\-float
+\-mrtd
+\-mregparm
+\-msvr3\-shlib
+\-mno\-ieee\-fp
\-mno\-fp\-ret\-in\-387
+\-mfancy\-math\-387
+\-mno\-wide\-multiply
+\-mdebug\-addr
+\-mno\-move
+\-mprofiler\-epilogue
+\-reg\-alloc=LIST
.Sp
.I HPPA Options
.br
@@ -520,6 +538,16 @@
\-fverbose\-asm
.ad b
.hy 1
+.SH FreeBSD SPECIFIC OPTIONS
+.TP
+.BI "\-pthread"
+Link a user-threaded process against libc_r instead of libc. Objects linked
+into user-threaded processes should be compiled with -D_THREAD_SAFE.
+.TP
+.BI "\-kthread"
+Link a kernel-threaded process against libpthread in addition to libc.
+Objects linked into kernel-threaded processes should be compiled with
+-D_THREAD_SAFE.
.SH OVERALL OPTIONS
.TP
.BI "\-x " "language"
@@ -1202,13 +1230,17 @@
.B \-M\c
\&\|' but the output mentions only the user header files
included with `\|\c
-.B #include "\c
+.B
+#include "\c
.I file\c
+.B
\&"\c
\&\|'. System header files
included with `\|\c
-.B #include <\c
+.B
+#include <\c
.I file\c
+.B
\&>\c
\&\|' are omitted.
.TP
@@ -1485,8 +1517,10 @@
\&"\c
\&\|';
they are not searched for `\|\c
-.B #include <\c
+.B
+#include <\c
.I file\c
+.B
\&>\c
\&\|'.
.Sp
@@ -2000,7 +2034,7 @@
.B \-Wnested-externs
Warn if an \c
.B extern\c
-\& declaration is encountered within an function.
+\& declaration is encountered within a function.
.TP
.B \-Wenum\-clash
Warn about conversion between different enumeration types (C++ only).
@@ -2432,6 +2466,12 @@
does, along with also turning on
.B \-finline\-functions.
.TP
+.B \-Os
+Optimize for size. This enables all
+.B \-O2
+optimizations that do not typically increase code size. It also performs
+further optimizations designed to reduce code size.
+.TP
.B \-O0
Do not optimize.
.Sp
@@ -2981,17 +3021,17 @@
.B \-mcypress
.TP
.B \-msupersparc
-These two options select the processor for which the code is optimised.
+These two options select the processor for which the code is optimized.
.Sp
With
.B \-mcypress
-(the default), the compiler optimises code for the Cypress CY7C602 chip, as
+(the default), the compiler optimizes code for the Cypress CY7C602 chip, as
used in the SparcStation/SparcServer 3xx series. This is also appropriate for
the older SparcStation 1, 2, IPX etc.
.Sp
With
.B \-msupersparc
-the compiler optimises code for the SuperSparc cpu, as used in the SparcStation
+the compiler optimizes code for the SuperSparc cpu, as used in the SparcStation
10, 1000 and 2000 series. This flag also enables use of the full SPARC v8
instruction set.
.PP
@@ -3570,12 +3610,51 @@
These `\|\c
.B \-m\c
\&\|' options are defined for the Intel 80386 family of computers:
+.TP
.B \-m486
.TP
.B \-mno\-486
Control whether or not code is optimized for a 486 instead of an
386. Code generated for a 486 will run on a 386 and vice versa.
.TP
+.B \-mpentium
+Synonym for
+.B \-mcpu=pentium
+.TP
+.B \-mpentiumpro
+Synonym for
+.B \-mcpu=pentiumpro
+.TP
+.B \-mcpu=\fIcpu type\fP
+Assume the defaults for the machine type CPU TYPE when scheduling instructions.
+The choices for CPU TYPE are:
+.B i386,
+.B i486,
+.B i586
+(pentium),
+.B pentium,
+.B i686
+(pentiumpro), and
+.B pentiumpro.
+While picking a specific CPU TYPE will schedule things appropriately for that
+particular chip, the compiler will not generate any code that does not run on
+the i386 without the
+.B \-march=\fIcpu type\fP
+option being used.
+.TP
+.B \-march=\fIcpu type\fP
+Generate instructions for the machine type CPU TYPE. The choices for CPU TYPE
+are:
+.B i386,
+.B i486,
+.B pentium,
+and
+.B pentiumpro.
+Specifying
+.B \-march=\fIcpu type\fP
+implies
+.B \-mcpu=\fIcpu type\fP.
+.TP
.B \-msoft\-float
Generate output containing library calls for floating point.
.I Warning:
@@ -3606,6 +3685,11 @@
.B \-mno-fp-ret-in-387\c
\&\|' causes such values to be returned
in ordinary CPU registers instead.
+.TP
+.B \-mprofiler-epilogue
+.TP
+.B \-mno-profiler-epilogue
+Generate extra code to write profile information for function exits.
.PP
These `\|\c
.B \-m\c
@@ -4141,7 +4225,7 @@
.B /tmp\c
\&).
.SH "SEE ALSO"
-cpp(1), as(1), ld(1), gdb(1), adb(1), dbx(1), sdb(1).
+as(1), cpp(1), gdb(1), ld(1)
.br
.RB "`\|" gcc "\|', `\|" cpp \|',
.RB "`\|" as "\|', `\|" ld \|',
|
