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<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>
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