From: chenglulu Date: Sat, 27 Nov 2021 07:09:39 +0000 (+0800) Subject: LoongArch Port: Add doc. X-Git-Tag: upstream/12.2.0~810 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8766689a78b086bc8b8ea155e9dfd12a729a6f7f;p=platform%2Fupstream%2Fgcc.git LoongArch Port: Add doc. 2022-03-29 Chenghua Xu Lulu Cheng gcc/ChangeLog: * doc/install.texi: Add LoongArch options section. * doc/invoke.texi: Add LoongArch options section. * doc/md.texi: Add LoongArch options section. contrib/ChangeLog: * config-list.mk: Add LoongArch triplet. --- diff --git a/contrib/config-list.mk b/contrib/config-list.mk index 3e1d132..e042105 100644 --- a/contrib/config-list.mk +++ b/contrib/config-list.mk @@ -57,7 +57,9 @@ LIST = aarch64-elf aarch64-linux-gnu aarch64-rtems \ i686-wrs-vxworksae \ i686-cygwinOPT-enable-threads=yes i686-mingw32crt ia64-elf \ ia64-freebsd6 ia64-linux ia64-hpux ia64-hp-vms iq2000-elf lm32-elf \ - lm32-rtems lm32-uclinux m32c-rtems m32c-elf m32r-elf m32rle-elf \ + lm32-rtems lm32-uclinux \ + loongarch64-linux-gnuf64 loongarch64-linux-gnuf32 loongarch64-linux-gnusf \ + m32c-rtems m32c-elf m32r-elf m32rle-elf \ m68k-elf m68k-netbsdelf \ m68k-uclinux m68k-linux m68k-rtems \ mcore-elf microblaze-linux microblaze-elf \ diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi index 7258f9d..ab67a63 100644 --- a/gcc/doc/install.texi +++ b/gcc/doc/install.texi @@ -747,9 +747,9 @@ Here are the possible CPU types: @quotation aarch64, aarch64_be, alpha, alpha64, amdgcn, arc, arceb, arm, armeb, avr, bfin, bpf, cr16, cris, csky, epiphany, fido, fr30, frv, ft32, h8300, hppa, hppa2.0, -hppa64, i486, i686, ia64, iq2000, lm32, m32c, m32r, m32rle, m68k, mcore, -microblaze, microblazeel, mips, mips64, mips64el, mips64octeon, mips64orion, -mips64vr, mipsel, mipsisa32, mipsisa32r2, mipsisa64, mipsisa64r2, +hppa64, i486, i686, ia64, iq2000, lm32, loongarch64, m32c, m32r, m32rle, m68k, +mcore, microblaze, microblazeel, mips, mips64, mips64el, mips64octeon, +mips64orion, mips64vr, mipsel, mipsisa32, mipsisa32r2, mipsisa64, mipsisa64r2, mipsisa64r2el, mipsisa64sb1, mipsisa64sr71k, mipstx39, mmix, mn10300, moxie, msp430, nds32be, nds32le, nios2, nvptx, or1k, pdp11, powerpc, powerpc64, powerpc64le, powerpcle, pru, riscv32, riscv32be, riscv64, riscv64be, rl78, rx, @@ -1166,8 +1166,9 @@ sysv, aix. @itemx --without-multilib-list Specify what multilibs to build. @var{list} is a comma separated list of values, possibly consisting of a single value. Currently only implemented -for aarch64*-*-*, arm*-*-*, riscv*-*-*, sh*-*-* and x86-64-*-linux*. The -accepted values and meaning for each target is given below. +for aarch64*-*-*, arm*-*-*, loongarch64-*-*, riscv*-*-*, sh*-*-* and +x86-64-*-linux*. The accepted values and meaning for each target is given +below. @table @code @item aarch64*-*-* @@ -1254,6 +1255,14 @@ profile. The union of these options is considered when specifying both @code{-mfloat-abi=hard} @end multitable +@item loongarch*-*-* +@var{list} is a comma-separated list of the following ABI identifiers: +@code{lp64d[/base]} @code{lp64f[/base]} @code{lp64d[/base]}, where the +@code{/base} suffix may be omitted, to enable their respective run-time +libraries. If @var{list} is empty or @code{default}, +or if @option{--with-multilib-list} is not specified, then the default ABI +as specified by @option{--with-abi} or implied by @option{--target} is selected. + @item riscv*-*-* @var{list} is a single ABI name. The target architecture must be either @code{rv32gc} or @code{rv64gc}. This will build a single multilib for the @@ -4442,6 +4451,34 @@ This configuration is intended for embedded systems running uClinux. @html
@end html +@anchor{loongarch} +@heading LoongArch +LoongArch processor. +The following LoongArch targets are available: +@table @code +@item loongarch64-linux-gnu* +LoongArch processor running GNU/Linux. This target triplet may be coupled +with a small set of possible suffixes to identify their default ABI type: +@table @code +@item f64 +Uses @code{lp64d/base} ABI by default. +@item f32 +Uses @code{lp64f/base} ABI by default. +@item sf +Uses @code{lp64s/base} ABI by default. +@end table + +@item loongarch64-linux-gnu +Same as @code{loongarch64-linux-gnuf64}, but may be used with +@option{--with-abi=*} to configure the default ABI type. +@end table + +More information about LoongArch can be found at +@uref{https://github.com/loongson/LoongArch-Documentation}. + +@html +
+@end html @anchor{m32c-x-elf} @heading m32c-*-elf Renesas M32C processor. diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 2830710..554e04e 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -996,6 +996,16 @@ Objective-C and Objective-C++ Dialects}. @gccoptlist{-mbarrel-shift-enabled -mdivide-enabled -mmultiply-enabled @gol -msign-extend-enabled -muser-enabled} +@emph{LoongArch Options} +@gccoptlist{-march=@var{cpu-type} -mtune=@var{cpu-type} -mabi=@var{base-abi-type} @gol +-mfpu=@var{fpu-type} -msoft-float -msingle-float -mdouble-float @gol +-mbranch-cost=@var{n} -mcheck-zero-division -mno-check-zero-division @gol +-mcond-move-int -mno-cond-move-int @gol +-mcond-move-float -mno-cond-move-float @gol +-memcpy -mno-memcpy -mstrict-align -mno-strict-align @gol +-mmax-inline-memcpy-size=@var{n} @gol +-mcmodel=@var{code-model}} + @emph{M32R/D Options} @gccoptlist{-m32r2 -m32rx -m32r @gol -mdebug @gol @@ -18905,6 +18915,7 @@ platform. * HPPA Options:: * IA-64 Options:: * LM32 Options:: +* LoongArch Options:: * M32C Options:: * M32R/D Options:: * M680x0 Options:: @@ -24420,6 +24431,195 @@ Enable user-defined instructions. @end table +@node LoongArch Options +@subsection LoongArch Options +@cindex LoongArch Options + +These command-line options are defined for LoongArch targets: + +@table @gcctabopt +@item -march=@var{cpu-type} +@opindex -march +Generate instructions for the machine type @var{cpu-type}. In contrast to +@option{-mtune=@var{cpu-type}}, which merely tunes the generated code +for the specified @var{cpu-type}, @option{-march=@var{cpu-type}} allows GCC +to generate code that may not run at all on processors other than the one +indicated. Specifying @option{-march=@var{cpu-type}} implies +@option{-mtune=@var{cpu-type}}, except where noted otherwise. + +The choices for @var{cpu-type} are: + +@table @samp +@item native +This selects the CPU to generate code for at compilation time by determining +the processor type of the compiling machine. Using @option{-march=native} +enables all instruction subsets supported by the local machine (hence +the result might not run on different machines). Using @option{-mtune=native} +produces code optimized for the local machine under the constraints +of the selected instruction set. +@item loongarch64 +A generic CPU with 64-bit extensions. +@item la464 +LoongArch LA464 CPU with LBT, LSX, LASX, LVZ. +@end table + +@item -mtune=@var{cpu-type} +@opindex mtune +Optimize the output for the given processor, specified by microarchitecture +name. + +@item -mabi=@var{base-abi-type} +@opindex mabi +Generate code for the specified calling convention. +@var{base-abi-type} can be one of: +@table @samp +@item lp64d +Uses 64-bit general purpose registers and 32/64-bit floating-point +registers for parameter passing. Data model is LP64, where @samp{int} +is 32 bits, while @samp{long int} and pointers are 64 bits. +@item lp64f +Uses 64-bit general purpose registers and 32-bit floating-point +registers for parameter passing. Data model is LP64, where @samp{int} +is 32 bits, while @samp{long int} and pointers are 64 bits. +@item lp64s +Uses 64-bit general purpose registers and no floating-point +registers for parameter passing. Data model is LP64, where @samp{int} +is 32 bits, while @samp{long int} and pointers are 64 bits. +@end table + +@item -mfpu=@var{fpu-type} +@opindex mfpu +Generate code for the specified FPU type, which can be one of: +@table @samp +@item 64 +Allow the use of hardware floating-point instructions for 32-bit +and 64-bit operations. +@item 32 +Allow the use of hardware floating-point instructions for 32-bit +operations. +@item none +@item 0 +Prevent the use of hardware floating-point instructions. +@end table + +@item -msoft-float +@opindex msoft-float +Force @option{-mfpu=none} and prevents the use of floating-point +registers for parameter passing. This option may change the target +ABI. + +@item -msingle-float +@opindex -msingle-float +Force @option{-mfpu=32} and allow the use of 32-bit floating-point +registers for parameter passing. This option may change the target +ABI. + +@item -mdouble-float +@opindex -mdouble-float +Force @option{-mfpu=64} and allow the use of 32/64-bit floating-point +registers for parameter passing. This option may change the target +ABI. + +@item -mbranch-cost=@var{n} +@opindex -mbranch-cost +Set the cost of branches to roughly @var{n} instructions. + +@item -mcheck-zero-division +@itemx -mno-check-zero-divison +@opindex -mcheck-zero-division +Trap (do not trap) on integer division by zero. The default is +@option{-mcheck-zero-division}. + +@item -mcond-move-int +@itemx -mno-cond-move-int +@opindex -mcond-move-int +Conditional moves for integral data in general-purpose registers +are enabled (disabled). The default is @option{-mcond-move-int}. + +@item -mcond-move-float +@itemx -mno-cond-move-float +@opindex -mcond-move-float +Conditional moves for floating-point registers are enabled (disabled). +The default is @option{-mcond-move-float}. + +@item -mmemcpy +@itemx -mno-memcpy +@opindex -mmemcpy +Force (do not force) the use of @code{memcpy} for non-trivial block moves. +The default is @option{-mno-memcpy}, which allows GCC to inline most +constant-sized copies. Setting optimization level to @option{-Os} also +forces the use of @code{memcpy}, but @option{-mno-memcpy} may override this +behavior if explicitly specified, regardless of the order these options on +the command line. + +@item -mstrict-align +@itemx -mno-strict-align +@opindex -mstrict-align +Avoid or allow generating memory accesses that may not be aligned on a natural +object boundary as described in the architecture specification. The default is +@option{-mno-strict-align}. + +@item -msmall-data-limit=@var{number} +@opindex -msmall-data-limit +Put global and static data smaller than @var{number} bytes into a special +section (on some targets). The default value is 0. + +@item -mmax-inline-memcpy-size=@var{n} +@opindex -mmax-inline-memcpy-size +Inline all block moves (such as calls to @code{memcpy} or structure copies) +less than or equal to @var{n} bytes. The default value of @var{n} is 1024. + +@item -mcmodel=@var{code-model} +Set the code model to one of: +@table @samp +@item tiny-static +@itemize @bullet +@item +local symbol and global strong symbol: The data section must be within +/-2MiB addressing space. +The text section must be within +/-128MiB addressing space. +@item +global weak symbol: The got table must be within +/-2GiB addressing space. +@end itemize + +@item tiny +@itemize @bullet +@item +local symbol: The data section must be within +/-2MiB addressing space. +The text section must be within +/-128MiB +addressing space. +@item +global symbol: The got table must be within +/-2GiB addressing space. +@end itemize + +@item normal +@itemize @bullet +@item +local symbol: The data section must be within +/-2GiB addressing space. +The text section must be within +/-128MiB addressing space. +@item +global symbol: The got table must be within +/-2GiB addressing space. +@end itemize + +@item large +@itemize @bullet +@item +local symbol: The data section must be within +/-2GiB addressing space. +The text section must be within +/-128GiB addressing space. +@item +global symbol: The got table must be within +/-2GiB addressing space. +@end itemize + +@item extreme(Not implemented yet) +@itemize @bullet +@item +local symbol: The data and text section must be within +/-8EiB addressing space. +@item +global symbol: The data got table must be within +/-8EiB addressing space. +@end itemize +@end table +The default code model is @code{normal}. +@end table + @node M32C Options @subsection M32C Options @cindex M32C options diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi index f3619c5..3b54435 100644 --- a/gcc/doc/md.texi +++ b/gcc/doc/md.texi @@ -2747,6 +2747,32 @@ Memory addressed using the small base register ($sb). $r1h @end table +@item LoongArch---@file{config/loongarch/constraints.md} +@table @code +@item f +A floating-point register (if available). +@item k +A memory operand whose address is formed by a base register and +(optionally scaled) index register. +@item l +A signed 16-bit constant. +@item m +A memory operand whose address is formed by a base register and offset +that is suitable for use in instructions with the same addressing mode +as @code{st.w} and @code{ld.w}. +@item I +A signed 12-bit constant (for arithmetic instructions). +@item K +An unsigned 12-bit constant (for logic instructions). +@item ZB +An address that is held in a general-purpose register. +The offset is zero. +@item ZC +A memory operand whose address is formed by a base register and offset +that is suitable for use in instructions with the same addressing mode +as @code{ll.w} and @code{sc.w}. +@end table + @item MicroBlaze---@file{config/microblaze/constraints.md} @table @code @item d