-fno-access-control -faligned-new=@r{[}@var{n}@r{]}
-fno-assume-sane-operators-new-delete
-fchar8_t -fcheck-new
--fconcepts -fconstexpr-depth=@var{n} -fconstexpr-cache-depth=@var{n}
+-fconcepts -fconcepts-diagnostics-depth=@var{n}
+-fconstexpr-depth=@var{n} -fconstexpr-cache-depth=@var{n}
-fconstexpr-loop-limit=@var{n} -fconstexpr-ops-limit=@var{n}
-fcontracts -fcontract-assumption-mode=@r{[}on@r{|}off@r{]}
-fcontract-build-level=@r{[}off@r{|}default@r{|}audit@r{]}
-fno-module-lazy
-fmodule-mapper=@var{specification}
-fmodule-only
--fmodule-version-ignore
-fmodules
-fms-extensions
-fnew-inheriting-ctors
-Wc++20-compat -Wc++26-compat
-Wno-c++11-extensions -Wno-c++14-extensions -Wno-c++17-extensions
-Wno-c++20-extensions -Wno-c++23-extensions
--Wcalloc-transposed-args
+-Wcalloc-transposed-args -Wcannot-profile
-Wcast-align -Wcast-align=strict -Wcast-function-type -Wcast-qual
-Wchar-subscripts
-Wclobbered -Wcomment
-Werror -Werror=* -Wexpansion-to-defined -Wfatal-errors
-Wflex-array-member-not-at-end
-Wfloat-conversion -Wfloat-equal -Wformat -Wformat=2
--Wno-format-contains-nul -Wno-format-extra-args
+-Wno-format-contains-nul -Wno-format-diag -Wno-format-extra-args
-Wformat-nonliteral -Wformat-overflow=@var{n}
-Wformat-security -Wformat-signedness -Wformat-truncation=@var{n}
-Wformat-y2k -Wframe-address
-Wsizeof-array-div
-Wsizeof-pointer-div -Wsizeof-pointer-memaccess
-Wstack-protector -Wstack-usage=@var{byte-size} -Wstrict-aliasing
--Wstrict-aliasing=n -Wstrict-overflow -Wstrict-overflow=@var{n}
+-Wstrict-aliasing=@var{n} -Wstrict-overflow -Wstrict-overflow=@var{n}
-Wstring-compare
-Wno-stringop-overflow -Wno-stringop-overread
-Wno-stringop-truncation -Wstrict-flex-arrays
-femit-struct-debug-detailed@r{[}=@var{spec-list}@r{]}
-fno-eliminate-unused-debug-symbols -femit-class-debug-always
-fno-merge-debug-strings -fno-dwarf2-cfi-asm
--fvar-tracking -fvar-tracking-assignments
+-fvar-tracking -fvar-tracking-assignments -fvar-tracking-uninit
--debug}
@item Optimization Options
-fdata-sections -fdce -fdelayed-branch
-fdelete-null-pointer-checks -fdep-fusion -fdevirtualize
-fdevirtualize-speculatively -fdevirtualize-at-ltrans -fdse
--fearly-inlining -fipa-sra -fexpensive-optimizations -ffat-lto-objects
--ffast-math -ffinite-math-only -ffloat-store -fexcess-precision=@var{style}
--ffinite-loops
+-fearly-inlining -fexcess-precision=@var{style}
+-fexpensive-optimizations -fext-dce
+-ffast-math -ffat-lto-objects -ffinite-loops
+-ffinite-math-only -ffloat-store
-fforward-propagate -ffp-contract=@var{style} -ffp-int-builtin-inexact
-ffunction-sections
-fgcse -fgcse-after-reload -fgcse-las -fgcse-lm -fgraphite-identity
-fgcse-sm -fhoist-adjacent-loads -fif-conversion
-fif-conversion2 -findirect-inlining
--finline-stringops[=@var{fn}]
--finline-functions -finline-functions-called-once -finline-limit=@var{n}
--finline-small-functions -fipa-modref -fipa-cp -fipa-cp-clone
+-finline-atomics -finline-functions -finline-functions-called-once
+-finline-limit=@var{n} -finline-small-functions
+-finline-stringops@r{[}=@var{fn}@r{]}
+-fipa-modref -fipa-cp -fipa-cp-clone
-fipa-bit-cp -fipa-vrp -fipa-pta -fipa-profile -fipa-pure-const
-fipa-reference -fipa-reference-addressable -fipa-reorder-for-locality
--fipa-stack-alignment -fipa-icf -fira-algorithm=@var{algorithm}
+-fipa-sra -fipa-stack-alignment
+-fipa-icf -fipa-icf-functions -fipa-icf-variables
+-fira-algorithm=@var{algorithm}
-flate-combine-instructions -flifetime-dse -flive-patching=@var{level}
-fira-region=@var{region} -fira-hoist-pressure
-fira-loop-pressure -fno-ira-share-save-slots
@gccoptlist{-p -pg -fprofile-arcs -coverage -ftest-coverage
-fcondition-coverage
-fpath-coverage
--fprofile-abs-path
+-fprofile -fprofile-abs-path
-fprofile-dir=@var{path} -fprofile-generate -fprofile-generate=@var{path}
-fprofile-info-section -fprofile-info-section=@var{name}
-fprofile-note=@var{path} -fprofile-prefix-path=@var{path}
-fdump-debug -fdump-earlydebug
-fdump-noaddr -fdump-unnumbered -fdump-unnumbered-links
-fdump-final-insns@r{[}=@var{file}@r{]}
+-fdump-internal-locations
-fdump-ipa-all -fdump-ipa-cgraph -fdump-ipa-inline
-fdump-lang-all
-fdump-lang-@var{switch}
-msplit-vecmove-early -m1reg-@var{reg}}
@emph{AMD GCN Options} (@ref{AMD GCN Options})
-@gccoptlist{-march=@var{gpu} -mtune=@var{gpu} -mstack-size=@var{bytes}}
+@gccoptlist{-march=@var{gpu} -mtune=@var{gpu} -mstack-size=@var{bytes}
+-Wopenacc-dims}
@emph{ARC Options} (@ref{ARC Options})
@gccoptlist{-mbarrel-shifter -mjli-always
in GCC 14 and removed in GCC 15; users are expected to convert their code
to C++20 concepts.
+@opindex fconcepts-diagnostics-depth
+@item -fconcepts-diagnostics-depth=@var{n}
+Specify maximum error replay depth during recursive diagnosis of a constraint
+satisfaction failure. The default is 1.
+
@opindex fconstexpr-depth
@item -fconstexpr-depth=@var{n}
Set the maximum nested evaluation depth for C++11 constexpr functions
Warn that the implicit declaration of a copy constructor or copy
assignment operator is deprecated if the class has a user-provided
copy constructor or copy assignment operator, in C++11 and up. This
-warning is enabled by @option{-Wextra}. With
-@option{-Wdeprecated-copy-dtor}, also deprecate if the class has a
+warning is enabled by @option{-Wextra}.
+
+@opindex Wdeprecated-copy-dtor
+@opindex Wno-deprecated-copy-dtor
+@item -Wdeprecated-copy-dtor @r{(C++ and Objective-C++ only)}
+Similar to @option{-Wdeprecated-copy}, but also deprecate if the class has a
user-provided destructor.
@opindex Wdeprecated-enum-enum-conversion
@option{-Wformat} also checks for null format arguments for several
functions, @option{-Wformat} also implies @option{-Wnonnull}. Some
aspects of this level of format checking can be disabled by the
-options: @option{-Wno-format-contains-nul},
+options: @option{-Wno-format-contains-nul}, @option{-Wno-format-diag},
@option{-Wno-format-extra-args}, and @option{-Wno-format-zero-length}.
@option{-Wformat} is enabled by @option{-Wall}.
If @option{-Wformat} is specified, do not warn about format strings that
contain NUL bytes.
+@opindex Wno-format-diag
+@opindex Wformat-diag
+@item -Wno-format-diag
+If @option{-Wformat} is specified, do not warn about format strings that
+are unsuitable for GCC diagnostics.
+
@opindex Wno-format-extra-args
@opindex Wformat-extra-args
@item -Wno-format-extra-args
included in @option{-Wall}.
It is equivalent to @option{-Wstrict-aliasing=3}.
-@opindex Wstrict-aliasing=n
-@item -Wstrict-aliasing=n
+@item -Wstrict-aliasing=@var{n}
This option is only active when @option{-fstrict-aliasing} is active.
It warns about code that might break the strict aliasing rules that the
compiler is using for optimization.
@item -Wauto-profile
Output warnings about auto-profile inconsistencies.
+@opindex Wcannot-profile
+@opindex Wno-cannot-profile
+@item -Wcannot-profile
+Warn when profiling instrumentation was requested, but could not be applied to
+a certain function.
+
@opindex Walloca-larger-than=
@opindex Wno-alloca-larger-than
@item -Walloca-larger-than=@var{byte-size}
By default, this flag is enabled together with @option{-fvar-tracking},
except when selective scheduling is enabled.
+@opindex fvar-tracking-uninit
+@opindex fno-var-tracking-uninit
+@item -fvar-tracking-uninit
+@itemx -fno-var-tracking-uninit
+Perform variable tracking and also mark uninitialized variables in the
+debug information.
+This flag is enabled by default by @option{-fvar-tracking}; it
+also implies @option{-fvar-tracking}.
+To do variable tracking without marking uninitialized variables, use
+@option{-fvar-tracking} @option{-fno-var-tracking-uninit}.
+
@opindex gsplit-dwarf
@item -gsplit-dwarf
If DWARF debugging information is enabled, separate as much debugging
suitable for conversion into a GDB@ index. This option is only useful
with a linker that can produce GDB@ index version 7.
+@opindex gno-pubnames
+@item -gno-pubnames
+Don't generate DWARF @code{.debug_pubnames} and @code{.debug_pubtypes} sections.
+
@opindex fdebug-types-section
@opindex fno-debug-types-section
@item -fdebug-types-section
Enabled at levels @option{-O2}, @option{-O3}.
+@opindex finline-atomics
+@opindex fno-inline-atomics
+@item -finline-atomics
+@itemx -fno-inline-atomics
+Inline @samp{__atomic} operations when a lock-free instruction sequence
+is available. This optimization is enabled by default.
+
@opindex finline-stringops
-@item -finline-stringops[=@var{fn}]
+@item -finline-stringops@r{[}=@var{fn}@r{]}
Expand memory and string operations (for now, only @code{memset})
inline, even when the length is variable or big enough as to require
looping. This is most useful along with @option{-ffreestanding} and
Enabled at levels @option{-O2}, @option{-O3}, @option{-Os}.
+@opindex fext-dce
+@opindex fno-ext-dce
+@item -fext-dce
+@itemx -fno-ext-dce
+Perform dead code elimination on zero and sign extensions, with special
+dataflow analysis.
+
@opindex free
@item -free
Attempt to remove redundant extension instructions. This is especially
that @option{-fipa-cp} is enabled.
@opindex fipa-icf
-@item -fipa-icf
-Perform Identical Code Folding for functions and read-only variables.
+@opindex fipa-icf-functions
+@opindex fipa-icf-variables
+@opindex fno-ipa-icf
+@opindex fno-ipa-icf-functions
+@opindex fno-ipa-icf-variables
+@item -fipa-icf-functions
+@itemx -fipa-icf-variables
+@itemx -fipa-icf
+Perform Identical Code Folding for functions (@option{-fipa-icf-functions}),
+read-only variables (@option{-fipa-icf-variables}), or both
+(@option{-fipa-icf}).
The optimization reduces code size and may disturb unwind stacks by replacing
-a function by equivalent one with a different name. The optimization works
+a function by an equivalent one with a different name. The optimization works
more effectively with link-time optimization enabled.
Although the behavior is similar to the Gold Linker's ICF optimization, GCC ICF
works on different levels and thus the optimizations are not same - there are
equivalences that are found only by GCC and equivalences found only by Gold.
-This flag is enabled by default at @option{-O2} and @option{-Os}.
+@option{-fipa-icf} is enabled by default at @option{-O2} and @option{-Os}.
@opindex flate-combine-instructions
@item -flate-combine-instructions
@cindex @command{prof}
@cindex @command{gprof}
@opindex p
-@opindex pg
@opindex profile
+@opindex fprofile
+@opindex pg
@item -p
-@itemx -pg
@itemx --profile
+@itemx -fprofile
+@itemx -pg
Generate extra code to write profile information suitable for the
-analysis program @command{prof} (for @option{-p} or @option{--profile})
+analysis program @command{prof} (for @option{-p}, @option{--profile},
+and @option{-fprofile})
or @command{gprof}
(for @option{-pg}). You must use this option when compiling
the source files you want data about, and you must also use it when
instruction numbers for the links to the previous and next instructions
in a sequence.
+@opindex fdump-internal-locations
+@item -fdump-internal-locations
+Dump detailed information about GCC's internal representation of source code
+locations.
+
@opindex fdump-ipa
@item -fdump-ipa-@var{switch}
@itemx -fdump-ipa-@var{switch}-@var{options}
The default is @samp{-mxnack=any} on devices that support Unified Shared
Memory, and @samp{-mxnack=no} otherwise.
+@opindex Wopenacc-dims
+@opindex Wno-openacc-dims
+@item -Wopenacc-dims
+Warn about invalid OpenACC dimensions.
+
@end table
@node ARC Options
projects / thirdparty / gcc.git / commitdiff
