From 754bbf7a25a8dda49b5d08ef0d0443bbf5af0e36 Mon Sep 17 00:00:00 2001 From: Craig Jennings Date: Sun, 7 Apr 2024 13:41:34 -0500 Subject: new repository --- devdocs/gcc~13/frv-options.html | 100 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 100 insertions(+) create mode 100644 devdocs/gcc~13/frv-options.html (limited to 'devdocs/gcc~13/frv-options.html') diff --git a/devdocs/gcc~13/frv-options.html b/devdocs/gcc~13/frv-options.html new file mode 100644 index 00000000..96c1d5bd --- /dev/null +++ b/devdocs/gcc~13/frv-options.html @@ -0,0 +1,100 @@ +

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3.19.16 FRV Options

+-mgpr-32 +

Only use the first 32 general-purpose registers.

+-mgpr-64 +

Use all 64 general-purpose registers.

+-mfpr-32 +

Use only the first 32 floating-point registers.

+-mfpr-64 +

Use all 64 floating-point registers.

+-mhard-float +

Use hardware instructions for floating-point operations.

+-msoft-float +

Use library routines for floating-point operations.

+-malloc-cc +

Dynamically allocate condition code registers.

+-mfixed-cc +

Do not try to dynamically allocate condition code registers, only use icc0 and fcc0.

+-mdword +

Change ABI to use double word insns.

+ -mno-dword +

Do not use double word instructions.

+-mdouble +

Use floating-point double instructions.

+-mno-double +

Do not use floating-point double instructions.

+-mmedia +

Use media instructions.

+-mno-media +

Do not use media instructions.

+-mmuladd +

Use multiply and add/subtract instructions.

+-mno-muladd +

Do not use multiply and add/subtract instructions.

+-mfdpic +

Select the FDPIC ABI, which uses function descriptors to represent pointers to functions. Without any PIC/PIE-related options, it implies -fPIE. With -fpic or -fpie, it assumes GOT entries and small data are within a 12-bit range from the GOT base address; with -fPIC or -fPIE, GOT offsets are computed with 32 bits. With a ‘bfin-elf’ target, this option implies -msim.

+-minline-plt +

Enable inlining of PLT entries in function calls to functions that are not known to bind locally. It has no effect without -mfdpic. It’s enabled by default if optimizing for speed and compiling for shared libraries (i.e., -fPIC or -fpic), or when an optimization option such as -O3 or above is present in the command line.

+-mTLS +

Assume a large TLS segment when generating thread-local code.

+-mtls +

Do not assume a large TLS segment when generating thread-local code.

+-mgprel-ro +

Enable the use of GPREL relocations in the FDPIC ABI for data that is known to be in read-only sections. It’s enabled by default, except for -fpic or -fpie: even though it may help make the global offset table smaller, it trades 1 instruction for 4. With -fPIC or -fPIE, 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, -mno-gprel-ro can be used to disable it.

+-multilib-library-pic +

Link with the (library, not FD) pic libraries. It’s implied by -mlibrary-pic, as well as by -fPIC and -fpic without -mfdpic. You should never have to use it explicitly.

+-mlinked-fp +

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 -mno-linked-fp.

+-mlong-calls +

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.

+-malign-labels +

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.

+-mlibrary-pic +

Generate position-independent EABI code.

+-macc-4 +

Use only the first four media accumulator registers.

+-macc-8 +

Use all eight media accumulator registers.

+-mpack +

Pack VLIW instructions.

+-mno-pack +

Do not pack VLIW instructions.

+-mno-eflags +

Do not mark ABI switches in e_flags.

+-mcond-move +

Enable the use of conditional-move instructions (default).

This switch is mainly for debugging the compiler and will likely be removed in a future version.

+-mno-cond-move +

Disable the use of conditional-move instructions.

This switch is mainly for debugging the compiler and will likely be removed in a future version.

+-mscc +

Enable the use of conditional set instructions (default).

This switch is mainly for debugging the compiler and will likely be removed in a future version.

+-mno-scc +

Disable the use of conditional set instructions.

This switch is mainly for debugging the compiler and will likely be removed in a future version.

+-mcond-exec +

Enable the use of conditional execution (default).

This switch is mainly for debugging the compiler and will likely be removed in a future version.

+-mno-cond-exec +

Disable the use of conditional execution.

This switch is mainly for debugging the compiler and will likely be removed in a future version.

+-mvliw-branch +

Run a pass to pack branches into VLIW instructions (default).

This switch is mainly for debugging the compiler and will likely be removed in a future version.

+-mno-vliw-branch +

Do not run a pass to pack branches into VLIW instructions.

This switch is mainly for debugging the compiler and will likely be removed in a future version.

+-mmulti-cond-exec +

Enable optimization of && and || in conditional execution (default).

This switch is mainly for debugging the compiler and will likely be removed in a future version.

+-mno-multi-cond-exec +

Disable optimization of && and || in conditional execution.

This switch is mainly for debugging the compiler and will likely be removed in a future version.

+-mnested-cond-exec +

Enable nested conditional execution optimizations (default).

This switch is mainly for debugging the compiler and will likely be removed in a future version.

+-mno-nested-cond-exec +

Disable nested conditional execution optimizations.

This switch is mainly for debugging the compiler and will likely be removed in a future version.

+-moptimize-membar +

This switch removes redundant membar instructions from the compiler-generated code. It is enabled by default.

+ -mno-optimize-membar +

This switch disables the automatic removal of redundant membar instructions from the generated code.

+-mtomcat-stats +

Cause gas to print out tomcat statistics.

+-mcpu=cpu +

Select the processor type for which to generate code. Possible values are ‘frv’, ‘fr550’, ‘tomcat’, ‘fr500’, ‘fr450’, ‘fr405’, ‘fr400’, ‘fr300’ and ‘simple’.

Next: GNU/Linux Options, Previous: FT32 Options, Up: Machine-Dependent Options [Contents][Index]

+

+ © Free Software Foundation
Licensed under the GNU Free Documentation License, Version 1.3.
+ https://gcc.gnu.org/onlinedocs/gcc-13.1.0/gcc/FRV-Options.html +

+
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