diff options
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 4ec4dcd31e5..8e2f46617b8 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -292,7 +292,7 @@ Objective-C and Objective-C++ Dialects}. -Wparentheses -Wno-pedantic-ms-format @gol -Wplacement-new -Wplacement-new=@var{n} @gol -Wpointer-arith -Wno-pointer-to-int-cast @gol --Wno-pragmas -Wredundant-decls -Wno-return-local-addr @gol +-Wno-pragmas -Wredundant-decls -Wrestrict -Wno-return-local-addr @gol -Wreturn-type -Wsequence-point -Wshadow -Wno-shadow-ivar @gol -Wshadow=global, -Wshadow=local, -Wshadow=compatible-local @gol -Wshift-overflow -Wshift-overflow=@var{n} @gol @@ -650,7 +650,8 @@ Objective-C and Objective-C++ Dialects}. -mpure-code} @emph{AVR Options} -@gccoptlist{-mmcu=@var{mcu} -maccumulate-args -mbranch-cost=@var{cost} @gol +@gccoptlist{-mmcu=@var{mcu} -mabsdata -maccumulate-args @gol +-mbranch-cost=@var{cost} @gol -mcall-prologues -mint8 -mn_flash=@var{size} -mno-interrupts @gol -mrelax -mrmw -mstrict-X -mtiny-stack -mfract-convert-truncate -nodevicelib @gol -Waddr-space-convert -Wmisspelled-isr} @@ -6194,6 +6195,12 @@ reduce the padding and so make the structure smaller. Warn if anything is declared more than once in the same scope, even in cases where multiple declaration is valid and changes nothing. +@item -Wrestrict +@opindex Wrestrict +@opindex Wno-restrict +Warn when an argument passed to a restrict-qualified parameter +aliases with another argument. + @item -Wnested-externs @r{(C and Objective-C only)} @opindex Wnested-externs @opindex Wno-nested-externs @@ -10504,13 +10511,18 @@ To optimize the program based on the collected profile information, use Alter the update method for an application instrumented for profile feedback based optimization. The @var{method} argument should be one of -@samp{single} or @samp{atomic}. The first one is useful for single-threaded -applications, while the second one prevents profile corruption by emitting -thread-safe code. +@samp{single}, @samp{atomic} or @samp{prefer-atomic}. +The first one is useful for single-threaded applications, +while the second one prevents profile corruption by emitting thread-safe code. @strong{Warning:} When an application does not properly join all threads (or creates an detached thread), a profile file can be still corrupted. +Using @samp{prefer-atomic} would be transformed either to @samp{atomic}, +when supported by a target, or to @samp{single} otherwise. The GCC driver +automatically selects @samp{prefer-atomic} when @option{-pthread} +is present in the command line. + @item -fsanitize=address @opindex fsanitize=address Enable AddressSanitizer, a fast memory error detector. @@ -15311,6 +15323,13 @@ GCC supports the following AVR devices and ISAs: @include avr-mmcu.texi +@item -mabsdata +@opindex mabsdata + +Assume that all data in static storage can be accessed by LDS / STS +instructions. This option has only an effect on reduced Tiny devices like +ATtiny40. + @item -maccumulate-args @opindex maccumulate-args Accumulate outgoing function arguments and acquire/release the needed |