You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
274 lines
13 KiB
HTML
274 lines
13 KiB
HTML
<html lang="en">
|
|
<head>
|
|
<title>FRV Options - Using the GNU Compiler Collection (GCC)</title>
|
|
<meta http-equiv="Content-Type" content="text/html">
|
|
<meta name="description" content="Using the GNU Compiler Collection (GCC)">
|
|
<meta name="generator" content="makeinfo 4.13">
|
|
<link title="Top" rel="start" href="index.html#Top">
|
|
<link rel="up" href="Submodel-Options.html#Submodel-Options" title="Submodel Options">
|
|
<link rel="prev" href="FR30-Options.html#FR30-Options" title="FR30 Options">
|
|
<link rel="next" href="GNU_002fLinux-Options.html#GNU_002fLinux-Options" title="GNU/Linux Options">
|
|
<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
|
|
<!--
|
|
Copyright (C) 1988-2015 Free Software Foundation, Inc.
|
|
|
|
Permission is granted to copy, distribute and/or modify this document
|
|
under the terms of the GNU Free Documentation License, Version 1.3 or
|
|
any later version published by the Free Software Foundation; with the
|
|
Invariant Sections being ``Funding Free Software'', the Front-Cover
|
|
Texts being (a) (see below), and with the Back-Cover Texts being (b)
|
|
(see below). A copy of the license is included in the section entitled
|
|
``GNU Free Documentation License''.
|
|
|
|
(a) The FSF's Front-Cover Text is:
|
|
|
|
A GNU Manual
|
|
|
|
(b) The FSF's Back-Cover Text is:
|
|
|
|
You have freedom to copy and modify this GNU Manual, like GNU
|
|
software. Copies published by the Free Software Foundation raise
|
|
funds for GNU development.-->
|
|
<meta http-equiv="Content-Style-Type" content="text/css">
|
|
<style type="text/css"><!--
|
|
pre.display { font-family:inherit }
|
|
pre.format { font-family:inherit }
|
|
pre.smalldisplay { font-family:inherit; font-size:smaller }
|
|
pre.smallformat { font-family:inherit; font-size:smaller }
|
|
pre.smallexample { font-size:smaller }
|
|
pre.smalllisp { font-size:smaller }
|
|
span.sc { font-variant:small-caps }
|
|
span.roman { font-family:serif; font-weight:normal; }
|
|
span.sansserif { font-family:sans-serif; font-weight:normal; }
|
|
--></style>
|
|
</head>
|
|
<body>
|
|
<div class="node">
|
|
<a name="FRV-Options"></a>
|
|
<p>
|
|
Next: <a rel="next" accesskey="n" href="GNU_002fLinux-Options.html#GNU_002fLinux-Options">GNU/Linux Options</a>,
|
|
Previous: <a rel="previous" accesskey="p" href="FR30-Options.html#FR30-Options">FR30 Options</a>,
|
|
Up: <a rel="up" accesskey="u" href="Submodel-Options.html#Submodel-Options">Submodel Options</a>
|
|
<hr>
|
|
</div>
|
|
|
|
<h4 class="subsection">3.17.13 FRV Options</h4>
|
|
|
|
<p><a name="index-FRV-Options-1636"></a>
|
|
<dl>
|
|
<dt><code>-mgpr-32</code><dd><a name="index-mgpr_002d32-1637"></a>
|
|
Only use the first 32 general-purpose registers.
|
|
|
|
<br><dt><code>-mgpr-64</code><dd><a name="index-mgpr_002d64-1638"></a>
|
|
Use all 64 general-purpose registers.
|
|
|
|
<br><dt><code>-mfpr-32</code><dd><a name="index-mfpr_002d32-1639"></a>
|
|
Use only the first 32 floating-point registers.
|
|
|
|
<br><dt><code>-mfpr-64</code><dd><a name="index-mfpr_002d64-1640"></a>
|
|
Use all 64 floating-point registers.
|
|
|
|
<br><dt><code>-mhard-float</code><dd><a name="index-mhard_002dfloat-1641"></a>
|
|
Use hardware instructions for floating-point operations.
|
|
|
|
<br><dt><code>-msoft-float</code><dd><a name="index-msoft_002dfloat-1642"></a>
|
|
Use library routines for floating-point operations.
|
|
|
|
<br><dt><code>-malloc-cc</code><dd><a name="index-malloc_002dcc-1643"></a>
|
|
Dynamically allocate condition code registers.
|
|
|
|
<br><dt><code>-mfixed-cc</code><dd><a name="index-mfixed_002dcc-1644"></a>
|
|
Do not try to dynamically allocate condition code registers, only
|
|
use <code>icc0</code> and <code>fcc0</code>.
|
|
|
|
<br><dt><code>-mdword</code><dd><a name="index-mdword-1645"></a>
|
|
Change ABI to use double word insns.
|
|
|
|
<br><dt><code>-mno-dword</code><dd><a name="index-mno_002ddword-1646"></a>
|
|
Do not use double word instructions.
|
|
|
|
<br><dt><code>-mdouble</code><dd><a name="index-mdouble-1647"></a>
|
|
Use floating-point double instructions.
|
|
|
|
<br><dt><code>-mno-double</code><dd><a name="index-mno_002ddouble-1648"></a>
|
|
Do not use floating-point double instructions.
|
|
|
|
<br><dt><code>-mmedia</code><dd><a name="index-mmedia-1649"></a>
|
|
Use media instructions.
|
|
|
|
<br><dt><code>-mno-media</code><dd><a name="index-mno_002dmedia-1650"></a>
|
|
Do not use media instructions.
|
|
|
|
<br><dt><code>-mmuladd</code><dd><a name="index-mmuladd-1651"></a>
|
|
Use multiply and add/subtract instructions.
|
|
|
|
<br><dt><code>-mno-muladd</code><dd><a name="index-mno_002dmuladd-1652"></a>
|
|
Do not use multiply and add/subtract instructions.
|
|
|
|
<br><dt><code>-mfdpic</code><dd><a name="index-mfdpic-1653"></a>
|
|
Select the FDPIC ABI, which uses function descriptors to represent
|
|
pointers to functions. Without any PIC/PIE-related options, it
|
|
implies <samp><span class="option">-fPIE</span></samp>. With <samp><span class="option">-fpic</span></samp> or <samp><span class="option">-fpie</span></samp>, it
|
|
assumes GOT entries and small data are within a 12-bit range from the
|
|
GOT base address; with <samp><span class="option">-fPIC</span></samp> or <samp><span class="option">-fPIE</span></samp>, GOT offsets
|
|
are computed with 32 bits.
|
|
With a ‘<samp><span class="samp">bfin-elf</span></samp>’ target, this option implies <samp><span class="option">-msim</span></samp>.
|
|
|
|
<br><dt><code>-minline-plt</code><dd><a name="index-minline_002dplt-1654"></a>
|
|
Enable inlining of PLT entries in function calls to functions that are
|
|
not known to bind locally. It has no effect without <samp><span class="option">-mfdpic</span></samp>.
|
|
It's enabled by default if optimizing for speed and compiling for
|
|
shared libraries (i.e., <samp><span class="option">-fPIC</span></samp> or <samp><span class="option">-fpic</span></samp>), or when an
|
|
optimization option such as <samp><span class="option">-O3</span></samp> or above is present in the
|
|
command line.
|
|
|
|
<br><dt><code>-mTLS</code><dd><a name="index-mTLS-1655"></a>
|
|
Assume a large TLS segment when generating thread-local code.
|
|
|
|
<br><dt><code>-mtls</code><dd><a name="index-mtls-1656"></a>
|
|
Do not assume a large TLS segment when generating thread-local code.
|
|
|
|
<br><dt><code>-mgprel-ro</code><dd><a name="index-mgprel_002dro-1657"></a>
|
|
Enable the use of <code>GPREL</code> relocations in the FDPIC ABI for data
|
|
that is known to be in read-only sections. It's enabled by default,
|
|
except for <samp><span class="option">-fpic</span></samp> or <samp><span class="option">-fpie</span></samp>: even though it may help
|
|
make the global offset table smaller, it trades 1 instruction for 4.
|
|
With <samp><span class="option">-fPIC</span></samp> or <samp><span class="option">-fPIE</span></samp>, it trades 3 instructions for 4,
|
|
one of which may be shared by multiple symbols, and it avoids the need
|
|
for a GOT entry for the referenced symbol, so it's more likely to be a
|
|
win. If it is not, <samp><span class="option">-mno-gprel-ro</span></samp> can be used to disable it.
|
|
|
|
<br><dt><code>-multilib-library-pic</code><dd><a name="index-multilib_002dlibrary_002dpic-1658"></a>
|
|
Link with the (library, not FD) pic libraries. It's implied by
|
|
<samp><span class="option">-mlibrary-pic</span></samp>, as well as by <samp><span class="option">-fPIC</span></samp> and
|
|
<samp><span class="option">-fpic</span></samp> without <samp><span class="option">-mfdpic</span></samp>. You should never have to use
|
|
it explicitly.
|
|
|
|
<br><dt><code>-mlinked-fp</code><dd><a name="index-mlinked_002dfp-1659"></a>
|
|
Follow the EABI requirement of always creating a frame pointer whenever
|
|
a stack frame is allocated. This option is enabled by default and can
|
|
be disabled with <samp><span class="option">-mno-linked-fp</span></samp>.
|
|
|
|
<br><dt><code>-mlong-calls</code><dd><a name="index-mlong_002dcalls-1660"></a>
|
|
Use indirect addressing to call functions outside the current
|
|
compilation unit. This allows the functions to be placed anywhere
|
|
within the 32-bit address space.
|
|
|
|
<br><dt><code>-malign-labels</code><dd><a name="index-malign_002dlabels-1661"></a>
|
|
Try to align labels to an 8-byte boundary by inserting NOPs into the
|
|
previous packet. This option only has an effect when VLIW packing
|
|
is enabled. It doesn't create new packets; it merely adds NOPs to
|
|
existing ones.
|
|
|
|
<br><dt><code>-mlibrary-pic</code><dd><a name="index-mlibrary_002dpic-1662"></a>
|
|
Generate position-independent EABI code.
|
|
|
|
<br><dt><code>-macc-4</code><dd><a name="index-macc_002d4-1663"></a>
|
|
Use only the first four media accumulator registers.
|
|
|
|
<br><dt><code>-macc-8</code><dd><a name="index-macc_002d8-1664"></a>
|
|
Use all eight media accumulator registers.
|
|
|
|
<br><dt><code>-mpack</code><dd><a name="index-mpack-1665"></a>
|
|
Pack VLIW instructions.
|
|
|
|
<br><dt><code>-mno-pack</code><dd><a name="index-mno_002dpack-1666"></a>
|
|
Do not pack VLIW instructions.
|
|
|
|
<br><dt><code>-mno-eflags</code><dd><a name="index-mno_002deflags-1667"></a>
|
|
Do not mark ABI switches in e_flags.
|
|
|
|
<br><dt><code>-mcond-move</code><dd><a name="index-mcond_002dmove-1668"></a>
|
|
Enable the use of conditional-move instructions (default).
|
|
|
|
<p>This switch is mainly for debugging the compiler and will likely be removed
|
|
in a future version.
|
|
|
|
<br><dt><code>-mno-cond-move</code><dd><a name="index-mno_002dcond_002dmove-1669"></a>
|
|
Disable the use of conditional-move instructions.
|
|
|
|
<p>This switch is mainly for debugging the compiler and will likely be removed
|
|
in a future version.
|
|
|
|
<br><dt><code>-mscc</code><dd><a name="index-mscc-1670"></a>
|
|
Enable the use of conditional set instructions (default).
|
|
|
|
<p>This switch is mainly for debugging the compiler and will likely be removed
|
|
in a future version.
|
|
|
|
<br><dt><code>-mno-scc</code><dd><a name="index-mno_002dscc-1671"></a>
|
|
Disable the use of conditional set instructions.
|
|
|
|
<p>This switch is mainly for debugging the compiler and will likely be removed
|
|
in a future version.
|
|
|
|
<br><dt><code>-mcond-exec</code><dd><a name="index-mcond_002dexec-1672"></a>
|
|
Enable the use of conditional execution (default).
|
|
|
|
<p>This switch is mainly for debugging the compiler and will likely be removed
|
|
in a future version.
|
|
|
|
<br><dt><code>-mno-cond-exec</code><dd><a name="index-mno_002dcond_002dexec-1673"></a>
|
|
Disable the use of conditional execution.
|
|
|
|
<p>This switch is mainly for debugging the compiler and will likely be removed
|
|
in a future version.
|
|
|
|
<br><dt><code>-mvliw-branch</code><dd><a name="index-mvliw_002dbranch-1674"></a>
|
|
Run a pass to pack branches into VLIW instructions (default).
|
|
|
|
<p>This switch is mainly for debugging the compiler and will likely be removed
|
|
in a future version.
|
|
|
|
<br><dt><code>-mno-vliw-branch</code><dd><a name="index-mno_002dvliw_002dbranch-1675"></a>
|
|
Do not run a pass to pack branches into VLIW instructions.
|
|
|
|
<p>This switch is mainly for debugging the compiler and will likely be removed
|
|
in a future version.
|
|
|
|
<br><dt><code>-mmulti-cond-exec</code><dd><a name="index-mmulti_002dcond_002dexec-1676"></a>
|
|
Enable optimization of <code>&&</code> and <code>||</code> in conditional execution
|
|
(default).
|
|
|
|
<p>This switch is mainly for debugging the compiler and will likely be removed
|
|
in a future version.
|
|
|
|
<br><dt><code>-mno-multi-cond-exec</code><dd><a name="index-mno_002dmulti_002dcond_002dexec-1677"></a>
|
|
Disable optimization of <code>&&</code> and <code>||</code> in conditional execution.
|
|
|
|
<p>This switch is mainly for debugging the compiler and will likely be removed
|
|
in a future version.
|
|
|
|
<br><dt><code>-mnested-cond-exec</code><dd><a name="index-mnested_002dcond_002dexec-1678"></a>
|
|
Enable nested conditional execution optimizations (default).
|
|
|
|
<p>This switch is mainly for debugging the compiler and will likely be removed
|
|
in a future version.
|
|
|
|
<br><dt><code>-mno-nested-cond-exec</code><dd><a name="index-mno_002dnested_002dcond_002dexec-1679"></a>
|
|
Disable nested conditional execution optimizations.
|
|
|
|
<p>This switch is mainly for debugging the compiler and will likely be removed
|
|
in a future version.
|
|
|
|
<br><dt><code>-moptimize-membar</code><dd><a name="index-moptimize_002dmembar-1680"></a>
|
|
This switch removes redundant <code>membar</code> instructions from the
|
|
compiler-generated code. It is enabled by default.
|
|
|
|
<br><dt><code>-mno-optimize-membar</code><dd><a name="index-mno_002doptimize_002dmembar-1681"></a>
|
|
This switch disables the automatic removal of redundant <code>membar</code>
|
|
instructions from the generated code.
|
|
|
|
<br><dt><code>-mtomcat-stats</code><dd><a name="index-mtomcat_002dstats-1682"></a>
|
|
Cause gas to print out tomcat statistics.
|
|
|
|
<br><dt><code>-mcpu=</code><var>cpu</var><dd><a name="index-mcpu-1683"></a>
|
|
Select the processor type for which to generate code. Possible values are
|
|
‘<samp><span class="samp">frv</span></samp>’, ‘<samp><span class="samp">fr550</span></samp>’, ‘<samp><span class="samp">tomcat</span></samp>’, ‘<samp><span class="samp">fr500</span></samp>’, ‘<samp><span class="samp">fr450</span></samp>’,
|
|
‘<samp><span class="samp">fr405</span></samp>’, ‘<samp><span class="samp">fr400</span></samp>’, ‘<samp><span class="samp">fr300</span></samp>’ and ‘<samp><span class="samp">simple</span></samp>’.
|
|
|
|
</dl>
|
|
|
|
</body></html>
|
|
|