diff options
Diffstat (limited to 'gcc-4.9/gcc/doc')
| -rw-r--r-- | gcc-4.9/gcc/doc/cpp.texi | 4 | ||||
| -rw-r--r-- | gcc-4.9/gcc/doc/extend.texi | 145 | ||||
| -rw-r--r-- | gcc-4.9/gcc/doc/gcov-tool.texi | 46 | ||||
| -rw-r--r-- | gcc-4.9/gcc/doc/install.texi | 4 | ||||
| -rw-r--r-- | gcc-4.9/gcc/doc/invoke.texi | 105 | ||||
| -rw-r--r-- | gcc-4.9/gcc/doc/md.texi | 6 | ||||
| -rw-r--r-- | gcc-4.9/gcc/doc/sourcebuild.texi | 3 | ||||
| -rw-r--r-- | gcc-4.9/gcc/doc/tm.texi | 48 | ||||
| -rw-r--r-- | gcc-4.9/gcc/doc/tm.texi.in | 27 |
9 files changed, 318 insertions, 70 deletions
diff --git a/gcc-4.9/gcc/doc/cpp.texi b/gcc-4.9/gcc/doc/cpp.texi index aaed739fb..0a6e50caa 100644 --- a/gcc-4.9/gcc/doc/cpp.texi +++ b/gcc-4.9/gcc/doc/cpp.texi @@ -2354,8 +2354,8 @@ This macro is defined, with value 3, when @option{-fstack-protector-strong} is in use. @item __SANITIZE_ADDRESS__ -This macro is defined, with value 1, when @option{-fsanitize=address} is -in use. +This macro is defined, with value 1, when @option{-fsanitize=address} +or @option{-fsanitize=kernel-address} are in use. @item __TIMESTAMP__ This macro expands to a string constant that describes the date and time diff --git a/gcc-4.9/gcc/doc/extend.texi b/gcc-4.9/gcc/doc/extend.texi index dfdedb617..4c0914a35 100644 --- a/gcc-4.9/gcc/doc/extend.texi +++ b/gcc-4.9/gcc/doc/extend.texi @@ -3527,6 +3527,35 @@ function should not save and restore registers R0..R7. This can be used on SH3* and SH4* targets that have a second R0..R7 register bank for non-reentrant interrupt handlers. +@item noplt +@cindex @code{noplt} function attribute +The @code{noplt} attribute is the counterpart to option @option{-fno-plt} and +does not use PLT for calls to functions marked with this attribute in position +independent code. + +@smallexample +@group +/* Externally defined function foo. */ +int foo () __attribute__ ((noplt)); + +int +main (/* @r{@dots{}} */) +@{ + /* @r{@dots{}} */ + foo (); + /* @r{@dots{}} */ +@} +@end group +@end smallexample + +The @code{noplt} attribute on function foo tells the compiler to assume that +the function foo is externally defined and the call to foo must avoid the PLT +in position independent code. + +Additionally, a few targets also convert calls to those functions that are +marked to not use the PLT to use the GOT instead for non-position independent +code. + @item optimize @cindex @code{optimize} function attribute The @code{optimize} attribute is used to specify that a function is to @@ -14016,16 +14045,22 @@ vector bool int vec_cmplt (vector unsigned int, vector unsigned int); vector bool int vec_cmplt (vector signed int, vector signed int); vector bool int vec_cmplt (vector float, vector float); +vector float vec_cpsgn (vector float, vector float); + vector float vec_ctf (vector unsigned int, const int); vector float vec_ctf (vector signed int, const int); +vector double vec_ctf (vector unsigned long, const int); +vector double vec_ctf (vector signed long, const int); vector float vec_vcfsx (vector signed int, const int); vector float vec_vcfux (vector unsigned int, const int); vector signed int vec_cts (vector float, const int); +vector signed long vec_cts (vector double, const int); vector unsigned int vec_ctu (vector float, const int); +vector unsigned long vec_ctu (vector double, const int); void vec_dss (const int); @@ -14861,6 +14896,16 @@ vector float vec_splat (vector float, const int); vector signed int vec_splat (vector signed int, const int); vector unsigned int vec_splat (vector unsigned int, const int); vector bool int vec_splat (vector bool int, const int); +vector signed long vec_splat (vector signed long, const int); +vector unsigned long vec_splat (vector unsigned long, const int); + +vector signed char vec_splats (signed char); +vector unsigned char vec_splats (unsigned char); +vector signed short vec_splats (signed short); +vector unsigned short vec_splats (unsigned short); +vector signed int vec_splats (signed int); +vector unsigned int vec_splats (unsigned int); +vector float vec_splats (float); vector float vec_vspltw (vector float, const int); vector signed int vec_vspltw (vector signed int, const int); @@ -15565,17 +15610,32 @@ vector double vec_add (vector double, vector double); vector double vec_and (vector double, vector double); vector double vec_and (vector double, vector bool long); vector double vec_and (vector bool long, vector double); +vector long vec_and (vector long, vector long); +vector long vec_and (vector long, vector bool long); +vector long vec_and (vector bool long, vector long); +vector unsigned long vec_and (vector unsigned long, vector unsigned long); +vector unsigned long vec_and (vector unsigned long, vector bool long); +vector unsigned long vec_and (vector bool long, vector unsigned long); vector double vec_andc (vector double, vector double); vector double vec_andc (vector double, vector bool long); vector double vec_andc (vector bool long, vector double); +vector long vec_andc (vector long, vector long); +vector long vec_andc (vector long, vector bool long); +vector long vec_andc (vector bool long, vector long); +vector unsigned long vec_andc (vector unsigned long, vector unsigned long); +vector unsigned long vec_andc (vector unsigned long, vector bool long); +vector unsigned long vec_andc (vector bool long, vector unsigned long); vector double vec_ceil (vector double); vector bool long vec_cmpeq (vector double, vector double); vector bool long vec_cmpge (vector double, vector double); vector bool long vec_cmpgt (vector double, vector double); vector bool long vec_cmple (vector double, vector double); vector bool long vec_cmplt (vector double, vector double); +vector double vec_cpsgn (vector double, vector double); vector float vec_div (vector float, vector float); vector double vec_div (vector double, vector double); +vector long vec_div (vector long, vector long); +vector unsigned long vec_div (vector unsigned long, vector unsigned long); vector double vec_floor (vector double); vector double vec_ld (int, const vector double *); vector double vec_ld (int, const double *); @@ -15585,38 +15645,83 @@ vector unsigned char vec_lvsl (int, const volatile double *); vector unsigned char vec_lvsr (int, const volatile double *); vector double vec_madd (vector double, vector double, vector double); vector double vec_max (vector double, vector double); +vector signed long vec_mergeh (vector signed long, vector signed long); +vector signed long vec_mergeh (vector signed long, vector bool long); +vector signed long vec_mergeh (vector bool long, vector signed long); +vector unsigned long vec_mergeh (vector unsigned long, vector unsigned long); +vector unsigned long vec_mergeh (vector unsigned long, vector bool long); +vector unsigned long vec_mergeh (vector bool long, vector unsigned long); +vector signed long vec_mergel (vector signed long, vector signed long); +vector signed long vec_mergel (vector signed long, vector bool long); +vector signed long vec_mergel (vector bool long, vector signed long); +vector unsigned long vec_mergel (vector unsigned long, vector unsigned long); +vector unsigned long vec_mergel (vector unsigned long, vector bool long); +vector unsigned long vec_mergel (vector bool long, vector unsigned long); vector double vec_min (vector double, vector double); vector float vec_msub (vector float, vector float, vector float); vector double vec_msub (vector double, vector double, vector double); vector float vec_mul (vector float, vector float); vector double vec_mul (vector double, vector double); +vector long vec_mul (vector long, vector long); +vector unsigned long vec_mul (vector unsigned long, vector unsigned long); vector float vec_nearbyint (vector float); vector double vec_nearbyint (vector double); vector float vec_nmadd (vector float, vector float, vector float); vector double vec_nmadd (vector double, vector double, vector double); vector double vec_nmsub (vector double, vector double, vector double); vector double vec_nor (vector double, vector double); +vector long vec_nor (vector long, vector long); +vector long vec_nor (vector long, vector bool long); +vector long vec_nor (vector bool long, vector long); +vector unsigned long vec_nor (vector unsigned long, vector unsigned long); +vector unsigned long vec_nor (vector unsigned long, vector bool long); +vector unsigned long vec_nor (vector bool long, vector unsigned long); vector double vec_or (vector double, vector double); vector double vec_or (vector double, vector bool long); vector double vec_or (vector bool long, vector double); -vector double vec_perm (vector double, - vector double, - vector unsigned char); +vector long vec_or (vector long, vector long); +vector long vec_or (vector long, vector bool long); +vector long vec_or (vector bool long, vector long); +vector unsigned long vec_or (vector unsigned long, vector unsigned long); +vector unsigned long vec_or (vector unsigned long, vector bool long); +vector unsigned long vec_or (vector bool long, vector unsigned long); +vector double vec_perm (vector double, vector double, vector unsigned char); +vector long vec_perm (vector long, vector long, vector unsigned char); +vector unsigned long vec_perm (vector unsigned long, vector unsigned long, + vector unsigned char); vector double vec_rint (vector double); vector double vec_recip (vector double, vector double); vector double vec_rsqrt (vector double); vector double vec_rsqrte (vector double); vector double vec_sel (vector double, vector double, vector bool long); vector double vec_sel (vector double, vector double, vector unsigned long); -vector double vec_sub (vector double, vector double); +vector long vec_sel (vector long, vector long, vector long); +vector long vec_sel (vector long, vector long, vector unsigned long); +vector long vec_sel (vector long, vector long, vector bool long); +vector unsigned long vec_sel (vector unsigned long, vector unsigned long, + vector long); +vector unsigned long vec_sel (vector unsigned long, vector unsigned long, + vector unsigned long); +vector unsigned long vec_sel (vector unsigned long, vector unsigned long, + vector bool long); +vector double vec_splats (double); +vector signed long vec_splats (signed long); +vector unsigned long vec_splats (unsigned long); vector float vec_sqrt (vector float); vector double vec_sqrt (vector double); void vec_st (vector double, int, vector double *); void vec_st (vector double, int, double *); +vector double vec_sub (vector double, vector double); vector double vec_trunc (vector double); vector double vec_xor (vector double, vector double); vector double vec_xor (vector double, vector bool long); vector double vec_xor (vector bool long, vector double); +vector long vec_xor (vector long, vector long); +vector long vec_xor (vector long, vector bool long); +vector long vec_xor (vector bool long, vector long); +vector unsigned long vec_xor (vector unsigned long, vector unsigned long); +vector unsigned long vec_xor (vector unsigned long, vector bool long); +vector unsigned long vec_xor (vector bool long, vector unsigned long); int vec_all_eq (vector double, vector double); int vec_all_ge (vector double, vector double); int vec_all_gt (vector double, vector double); @@ -15745,17 +15850,30 @@ vector unsigned long long vec_add (vector unsigned long long, vector unsigned long long); int vec_all_eq (vector long long, vector long long); +int vec_all_eq (vector unsigned long long, vector unsigned long long); int vec_all_ge (vector long long, vector long long); +int vec_all_ge (vector unsigned long long, vector unsigned long long); int vec_all_gt (vector long long, vector long long); +int vec_all_gt (vector unsigned long long, vector unsigned long long); int vec_all_le (vector long long, vector long long); +int vec_all_le (vector unsigned long long, vector unsigned long long); int vec_all_lt (vector long long, vector long long); +int vec_all_lt (vector unsigned long long, vector unsigned long long); int vec_all_ne (vector long long, vector long long); +int vec_all_ne (vector unsigned long long, vector unsigned long long); + int vec_any_eq (vector long long, vector long long); +int vec_any_eq (vector unsigned long long, vector unsigned long long); int vec_any_ge (vector long long, vector long long); +int vec_any_ge (vector unsigned long long, vector unsigned long long); int vec_any_gt (vector long long, vector long long); +int vec_any_gt (vector unsigned long long, vector unsigned long long); int vec_any_le (vector long long, vector long long); +int vec_any_le (vector unsigned long long, vector unsigned long long); int vec_any_lt (vector long long, vector long long); +int vec_any_lt (vector unsigned long long, vector unsigned long long); int vec_any_ne (vector long long, vector long long); +int vec_any_ne (vector unsigned long long, vector unsigned long long); vector long long vec_eqv (vector long long, vector long long); vector long long vec_eqv (vector bool long long, vector long long); @@ -15793,6 +15911,14 @@ vector long long vec_max (vector long long, vector long long); vector unsigned long long vec_max (vector unsigned long long, vector unsigned long long); +vector signed int vec_mergee (vector signed int, vector signed int); +vector unsigned int vec_mergee (vector unsigned int, vector unsigned int); +vector bool int vec_mergee (vector bool int, vector bool int); + +vector signed int vec_mergeo (vector signed int, vector signed int); +vector unsigned int vec_mergeo (vector unsigned int, vector unsigned int); +vector bool int vec_mergeo (vector bool int, vector bool int); + vector long long vec_min (vector long long, vector long long); vector unsigned long long vec_min (vector unsigned long long, vector unsigned long long); @@ -15871,6 +15997,8 @@ vector unsigned int vec_packs (vector unsigned long long, vector unsigned long long); vector unsigned int vec_packsu (vector long long, vector long long); +vector unsigned int vec_packsu (vector unsigned long long, + vector unsigned long long); vector long long vec_rl (vector long long, vector unsigned long long); @@ -15912,6 +16040,15 @@ vector unsigned long long vec_vaddudm (vector unsigned long long, vector long long vec_vbpermq (vector signed char, vector signed char); vector long long vec_vbpermq (vector unsigned char, vector unsigned char); +vector long long vec_cntlz (vector long long); +vector unsigned long long vec_cntlz (vector unsigned long long); +vector int vec_cntlz (vector int); +vector unsigned int vec_cntlz (vector int); +vector short vec_cntlz (vector short); +vector unsigned short vec_cntlz (vector unsigned short); +vector signed char vec_cntlz (vector signed char); +vector unsigned char vec_cntlz (vector unsigned char); + vector long long vec_vclz (vector long long); vector unsigned long long vec_vclz (vector unsigned long long); vector int vec_vclz (vector int); diff --git a/gcc-4.9/gcc/doc/gcov-tool.texi b/gcc-4.9/gcc/doc/gcov-tool.texi index ff8b9e22f..3a6687289 100644 --- a/gcc-4.9/gcc/doc/gcov-tool.texi +++ b/gcc-4.9/gcc/doc/gcov-tool.texi @@ -103,8 +103,7 @@ in these kind of counters. @section Invoking @command{gcov-tool} @smallexample -gcov-tool @r{[}@var{global-options}@r{]} SUB_COMMAND -@r{[}@var{sub_command-options}@r{]} @var{profile_dir} +gcov-tool @r{[}@var{global-options}@r{]} SUB_COMMAND @r{[}@var{sub_command-options}@r{]} @var{profile_dir} @end smallexample @command{gcov-tool} accepts the following options: @@ -123,6 +122,15 @@ gcov-tool rewrite [rewrite-options] @var{directory} [@option{-o}|@option{--output} @var{directory}] [@option{-s}|@option{--scale} @var{float_or_simple-frac_value}] [@option{-n}|@option{--normalize} @var{long_long_value}] + +gcov-tool overlap [overlap-options] @var{directory1} @var{directory2} + [@option{-v}|@option{--verbose}] + [@option{-h}|@option{--hotonly}] + [@option{-f}|@option{--function}] + [@option{-F}|@option{--fullname}] + [@option{-o}|@option{--object}] + [@option{-t}|@option{--hot_threshold}] @var{float} + @c man end @c man begin SEEALSO gpl(7), gfdl(7), fsf-funding(7), gcc(1), gcov(1) and the Info entry for @@ -182,8 +190,42 @@ or simple fraction value form, such 1, 2, 2/3, and 5/3. @itemx --normalize <long_long_value> Normalize the profile. The specified value is the max counter value in the new profile. +@end table + +@item overlap +Computer the overlap score between the two specified profile directories. +The overlap score is computed based on the arc profiles. It is defined as +the sum of min (p1_counter[i] / p1_sum_all, p2_counter[i] / p2_sum_all), +for all arc counter i, where p1_counter[i] and p2_counter[i] are two +matched counters and p1_sum_all and p2_sum_all are the sum of counter +values in profile 1 and profile 2, respectively. + +@table @gcctabopt +@item -v +@itemx --verbose +Set the verbose mode. + +@item -h +@itemx --hotonly +Only print info for hot objects/functions. +@item -f +@itemx --function +Print function level overlap score. + +@item -F +@itemx --fullname +Print full gcda filename. + +@item -o +@itemx --object +Print object level overlap score. + +@item -t @var{float} +@itemx --hot_threshold <float> +Set the threshold for hot counter value. @end table + @end table @c man end diff --git a/gcc-4.9/gcc/doc/install.texi b/gcc-4.9/gcc/doc/install.texi index ccb7e7b10..9f66a47ef 100644 --- a/gcc-4.9/gcc/doc/install.texi +++ b/gcc-4.9/gcc/doc/install.texi @@ -1489,6 +1489,10 @@ be built. This can be useful for debugging, or for compatibility with previous Ada build procedures, when it was required to explicitly do a @samp{make -C gcc gnatlib_and_tools}. +@item --disable-libsanitizer +Specify that the run-time libraries for the various sanitizers should +not be built. + @item --disable-libssp Specify that the run-time libraries for stack smashing protection should not be built. diff --git a/gcc-4.9/gcc/doc/invoke.texi b/gcc-4.9/gcc/doc/invoke.texi index bee61f058..f8350c418 100644 --- a/gcc-4.9/gcc/doc/invoke.texi +++ b/gcc-4.9/gcc/doc/invoke.texi @@ -372,7 +372,8 @@ Objective-C and Objective-C++ Dialects}. -fdelete-null-pointer-checks -fdevirtualize -fdevirtualize-speculatively -fdse @gol -fearly-inlining -fipa-sra -fexpensive-optimizations -ffat-lto-objects @gol -ffast-math -ffinite-math-only -ffloat-store -fexcess-precision=@var{style} @gol --fforward-propagate -ffp-contract=@var{style} -ffunction-sections @gol +-fforward-propagate -ffp-contract=@var{style} @gol +-ffunction-attribute-list -ffunction-sections @gol -fgcse -fgcse-after-reload -fgcse-las -fgcse-lm -fgraphite-identity @gol -fgcse-sm -fhoist-adjacent-loads -fif-conversion @gol -fif-conversion2 -findirect-inlining @gol @@ -462,7 +463,7 @@ Objective-C and Objective-C++ Dialects}. @item Linker Options @xref{Link Options,,Options for Linking}. @gccoptlist{@var{object-file-name} -l@var{library} @gol --nostartfiles -nodefaultlibs -nostdlib -pie -rdynamic @gol +-nostartfiles -nodefaultlibs -no-pie -nostdlib -pie -rdynamic @gol -s -static -static-libgcc -static-libstdc++ @gol -static-libasan -static-libtsan -static-liblsan -static-libubsan @gol -shared -shared-libgcc -symbolic @gol @@ -668,7 +669,6 @@ Objective-C and Objective-C++ Dialects}. -mtune-ctrl=@var{feature-list} -mdump-tune-features -mno-default @gol -mfpmath=@var{unit} @gol -masm=@var{dialect} -mno-fancy-math-387 @gol --mcopyrelocs @gol -mno-fp-ret-in-387 -msoft-float @gol -mno-wide-multiply -mrtd -malign-double @gol -mpreferred-stack-boundary=@var{num} @gol @@ -840,7 +840,7 @@ Objective-C and Objective-C++ Dialects}. @emph{MSP430 Options} @gccoptlist{-msim -masm-hex -mmcu= -mcpu= -mlarge -msmall -mrelax @gol --mhwmult=} +-mhwmult= -minrt} @emph{NDS32 Options} @gccoptlist{-mbig-endian -mlittle-endian @gol @@ -1091,7 +1091,7 @@ See S/390 and zSeries Options. -finstrument-functions-exclude-function-list=@var{sym},@var{sym},@dots{} @gol -finstrument-functions-exclude-file-list=@var{file},@var{file},@dots{} @gol -fno-common -fno-ident @gol --fpcc-struct-return -fpic -fPIC -fpie -fPIE @gol +-fpcc-struct-return -fpic -fPIC -fpie -fPIE -fno-plt @gol -fno-jump-tables @gol -frecord-gcc-switches @gol -freg-struct-return -fshort-enums @gol @@ -5426,6 +5426,11 @@ more details. The run-time behavior can be influenced using the @url{https://code.google.com/p/address-sanitizer/wiki/Flags#Run-time_flags} for a list of supported options. +@item -fsanitize=kernel-address +@opindex fsanitize=kernel-address +Enable AddressSanitizer for Linux kernel. +See @uref{http://code.google.com/p/address-sanitizer/wiki/AddressSanitizerForKernel} for more details. + @item -fsanitize=thread @opindex fsanitize=thread Enable ThreadSanitizer, a fast data race detector. @@ -7536,6 +7541,16 @@ registers after writing to their lower 32-bit half. Enabled for Alpha, AArch64 and x86 at levels @option{-O2}, @option{-O3}, @option{-Os}. +@item -fno-lifetime-dse +@opindex fno-lifetime-dse +In C++ the value of an object is only affected by changes within its +lifetime: when the constructor begins, the object has an indeterminate +value, and any changes during the lifetime of the object are dead when +the object is destroyed. Normally dead store elimination will take +advantage of this; if your code relies on the value of the object +storage persisting beyond the lifetime of the object, you can use this +flag to disable this optimization. + @item -flive-range-shrinkage @opindex flive-range-shrinkage Attempt to decrease register pressure through register live range @@ -9461,6 +9476,15 @@ You cannot use @code{gprof} on all systems if you specify this option, and you may have problems with debugging if you specify both this option and @option{-g}. +@item -ffunction-attribute-list +@opindex ffunction-attribute-list +List of function name patterns that will be applied specified attribute. +For example, the following command line will add "cold" attribute to +functions that has "ErrorMessage" in its name. +@smallexample +gcc -ffunction-atribute-list=cold:ErrorMessage -c foo.c +@end smallexample + @item -fbranch-target-load-optimize @opindex fbranch-target-load-optimize Perform branch target register load optimization before prologue / epilogue @@ -10412,6 +10436,12 @@ is enabled by default when using @option{-fsanitize=address} option. To disable use-after-return detection use @option{--param asan-use-after-return=0}. +@item asan-instrumentation-with-call-threshold +If number of memory accesses in function being instrumented +is greater or equal to this number, use callbacks instead of inline checks. +E.g. to disable inline code use +@option{--param asan-instrumentation-with-call-threshold=0}. + @end table @end table @@ -10578,6 +10608,11 @@ These entries are usually resolved by entries in libc. These entry points should be supplied through some other mechanism when this option is specified. +@item -no-pie +@opindex no-pie +Produce a position dependent executable. This is the negative of option +@option{-pie} which produces a position independent executable. + @item -nostdlib @opindex nostdlib Do not use the standard system startup files or libraries when linking. @@ -12576,8 +12611,8 @@ architecture together with the optional CRC32 extensions. @option{-march=native} causes the compiler to auto-detect the architecture of the build computer. At present, this feature is only supported on -Linux, and not all architectures are recognized. If the auto-detect is -unsuccessful the option has no effect. +GNU/Linux, and not all architectures are recognized. If the auto-detect +is unsuccessful the option has no effect. @item -mtune=@var{name} @opindex mtune @@ -12628,7 +12663,7 @@ this option may change in future GCC versions as CPU models come and go. @option{-mtune=native} causes the compiler to auto-detect the CPU of the build computer. At present, this feature is only supported on -Linux, and not all architectures are recognized. If the auto-detect is +GNU/Linux, and not all architectures are recognized. If the auto-detect is unsuccessful the option has no effect. @item -mcpu=@var{name} @@ -12649,8 +12684,8 @@ See @option{-mtune} for more information. @option{-mcpu=native} causes the compiler to auto-detect the CPU of the build computer. At present, this feature is only supported on -Linux, and not all architectures are recognized. If the auto-detect is -unsuccessful the option has no effect. +GNU/Linux, and not all architectures are recognized. If the auto-detect +is unsuccessful the option has no effect. @item -mfpu=@var{name} @opindex mfpu @@ -15307,15 +15342,6 @@ Control whether or not the compiler uses IEEE floating-point comparisons. These correctly handle the case where the result of a comparison is unordered. -@item -mcopyrelocs -@itemx -mno-copyrelocs -@opindex mcopyrelocs -@opindex mno-copyrelocs -With @option{-fpie} and @option{fPIE}, copy relocations support allows the -compiler to assume that all symbol references are local. This allows the -compiler to skip the GOT for global accesses and this applies only to the -x86-64 architecture. - @item -msoft-float @opindex msoft-float Generate output containing library calls for floating point. @@ -18626,6 +18652,13 @@ The hardware multiply routines disable interrupts whilst running and restore the previous interrupt state when they finish. This makes them safe to use inside interrupt handlers as well as in normal code. +@item -minrt +@opindex minrt +Enable the use of a minimum runtime environment - no static +initializers or constructors. This is intended for memory-constrained +devices. The compiler will include special symbols in some objects +that tell the linker and runtime which code fragments are required. + @end table @node NDS32 Options @@ -21437,8 +21470,8 @@ the rules of the ABI@. Set the instruction set, register set, and instruction scheduling parameters for machine type @var{cpu_type}. Supported values for @var{cpu_type} are @samp{v7}, @samp{cypress}, @samp{v8}, @samp{supersparc}, @samp{hypersparc}, -@samp{leon}, @samp{leon3}, @samp{sparclite}, @samp{f930}, @samp{f934}, -@samp{sparclite86x}, @samp{sparclet}, @samp{tsc701}, @samp{v9}, +@samp{leon}, @samp{leon3}, @samp{leon3v7}, @samp{sparclite}, @samp{f930}, +@samp{f934}, @samp{sparclite86x}, @samp{sparclet}, @samp{tsc701}, @samp{v9}, @samp{ultrasparc}, @samp{ultrasparc3}, @samp{niagara}, @samp{niagara2}, @samp{niagara3} and @samp{niagara4}. @@ -21456,7 +21489,7 @@ implementations. @table @asis @item v7 -cypress +cypress, leon3v7 @item v8 supersparc, hypersparc, leon, leon3 @@ -21521,11 +21554,11 @@ option @option{-mcpu=@var{cpu_type}} does. The same values for @option{-mcpu=@var{cpu_type}} can be used for @option{-mtune=@var{cpu_type}}, but the only useful values are those that select a particular CPU implementation. Those are @samp{cypress}, -@samp{supersparc}, @samp{hypersparc}, @samp{leon}, @samp{leon3}, @samp{f930}, -@samp{f934}, @samp{sparclite86x}, @samp{tsc701}, @samp{ultrasparc}, -@samp{ultrasparc3}, @samp{niagara}, @samp{niagara2}, @samp{niagara3} and -@samp{niagara4}. With native Solaris and GNU/Linux toolchains, @samp{native} -can also be used. +@samp{supersparc}, @samp{hypersparc}, @samp{leon}, @samp{leon3}, +@samp{leon3v7}, @samp{f930}, @samp{f934}, @samp{sparclite86x}, @samp{tsc701}, +@samp{ultrasparc}, @samp{ultrasparc3}, @samp{niagara}, @samp{niagara2}, +@samp{niagara3} and @samp{niagara4}. With native Solaris and GNU/Linux +toolchains, @samp{native} can also be used. @item -mv8plus @itemx -mno-v8plus @@ -22695,6 +22728,24 @@ used during linking. @code{__pie__} and @code{__PIE__}. The macros have the value 1 for @option{-fpie} and 2 for @option{-fPIE}. +@item -fno-plt +@opindex fno-plt +Do not use PLT for external function calls in position-independent code. +Instead, load callee address at call site from GOT and branch to it. +This leads to more efficient code by eliminating PLT stubs and exposing +GOT load to optimizations. On architectures such as 32-bit x86 where +PLT stubs expect GOT pointer in a specific register, this gives more +register allocation freedom to the compiler. Lazy binding requires PLT: +with @option{-fno-plt} all external symbols are resolved at load time. + +Alternatively, function attribute @code{noplt} can be used to avoid PLT +for calls to specific external functions by marking those functions with +this attribute. + +Additionally, a few targets also convert calls to those functions that are +marked to not use the PLT to use the GOT instead for non-position independent +code. + @item -fno-jump-tables @opindex fno-jump-tables Do not use jump tables for switch statements even where it would be diff --git a/gcc-4.9/gcc/doc/md.texi b/gcc-4.9/gcc/doc/md.texi index 60ca79986..b210655f2 100644 --- a/gcc-4.9/gcc/doc/md.texi +++ b/gcc-4.9/gcc/doc/md.texi @@ -8418,9 +8418,9 @@ must be a @code{label_ref}. @cindex @code{pc} and attributes @item (pc) -This refers to the address of the @emph{current} insn. It might have -been more consistent with other usage to make this the address of the -@emph{next} insn but this would be confusing because the length of the +For non-branch instructions and backward branch instructions, this refers +to the address of the current insn. But for forward branch instructions, +this refers to the address of the next insn, because the length of the current insn is to be computed. @end table diff --git a/gcc-4.9/gcc/doc/sourcebuild.texi b/gcc-4.9/gcc/doc/sourcebuild.texi index 39152df27..6e3be1dc6 100644 --- a/gcc-4.9/gcc/doc/sourcebuild.texi +++ b/gcc-4.9/gcc/doc/sourcebuild.texi @@ -1714,6 +1714,9 @@ or @code{EM_SPARCV9} executables. @item vect_cmdline_needed Target requires a command line argument to enable a SIMD instruction set. + +@item pie_copyreloc +The x86-64 target linker supports PIE with copy reloc. @end table @subsubsection Environment attributes diff --git a/gcc-4.9/gcc/doc/tm.texi b/gcc-4.9/gcc/doc/tm.texi index d512ebb92..2f3845ce0 100644 --- a/gcc-4.9/gcc/doc/tm.texi +++ b/gcc-4.9/gcc/doc/tm.texi @@ -3801,6 +3801,10 @@ fixed register. See @code{FIXED_REGISTERS} for more information. Default return value is @code{false}. @end deftypefn +@deftypefn {Target Hook} bool TARGET_CAN_OMIT_LEAF_FRAME_POINTER (void) +This target hook will return @code{true} if a function is a leaf function and +its frame pointer can be omitted on the target. +@end deftypefn @findex get_frame_size @defmac INITIAL_FRAME_POINTER_OFFSET (@var{depth-var}) @@ -4441,10 +4445,6 @@ to return a nonzero value when it is required, the compiler will run out of spill registers and print a fatal error message. @end deftypefn -@deftypevr {Target Hook} {unsigned int} TARGET_FLAGS_REGNUM -If the target has a dedicated flags register, and it needs to use the post-reload comparison elimination pass, then this value should be set appropriately. -@end deftypevr - @node Scalar Return @subsection How Scalar Function Values Are Returned @cindex return values in registers @@ -6047,10 +6047,11 @@ for comparisons whose argument is a @code{plus}: @smallexample #define SELECT_CC_MODE(OP,X,Y) \ - (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \ - ? ((OP == EQ || OP == NE) ? CCFPmode : CCFPEmode) \ - : ((GET_CODE (X) == PLUS || GET_CODE (X) == MINUS \ - || GET_CODE (X) == NEG) \ + (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \ + ? ((OP == LT || OP == LE || OP == GT || OP == GE) \ + ? CCFPEmode : CCFPmode) \ + : ((GET_CODE (X) == PLUS || GET_CODE (X) == MINUS \ + || GET_CODE (X) == NEG || GET_CODE (x) == ASHIFT) \ ? CC_NOOVmode : CCmode)) @end smallexample @@ -6093,10 +6094,11 @@ then @code{REVERSIBLE_CC_MODE (@var{mode})} must be zero. You need not define this macro if it would always returns zero or if the floating-point format is anything other than @code{IEEE_FLOAT_FORMAT}. For example, here is the definition used on the SPARC, where floating-point -inequality comparisons are always given @code{CCFPEmode}: +inequality comparisons are given either @code{CCFPEmode} or @code{CCFPmode}: @smallexample -#define REVERSIBLE_CC_MODE(MODE) ((MODE) != CCFPEmode) +#define REVERSIBLE_CC_MODE(MODE) \ + ((MODE) != CCFPEmode && (MODE) != CCFPmode) @end smallexample @end defmac @@ -6106,7 +6108,7 @@ comparison done in CC_MODE @var{mode}. The macro is used only in case @code{REVERSIBLE_CC_MODE (@var{mode})} is nonzero. Define this macro in case machine has some non-standard way how to reverse certain conditionals. For instance in case all floating point conditions are non-trapping, compiler may -freely convert unordered compares to ordered one. Then definition may look +freely convert unordered compares to ordered ones. Then definition may look like: @smallexample @@ -6144,6 +6146,10 @@ same. If they are, it returns that mode. If they are different, it returns @code{VOIDmode}. @end deftypefn +@deftypevr {Target Hook} {unsigned int} TARGET_FLAGS_REGNUM +If the target has a dedicated flags register, and it needs to use the post-reload comparison elimination pass, then this value should be set appropriately. +@end deftypevr + @node Costs @section Describing Relative Costs of Operations @cindex costs of instructions @@ -9521,6 +9527,10 @@ True if sched2 is not to be run at its normal place. This usually means it will True if vartrack is not to be run at its normal place. This usually means it will be run as part of machine-specific reorg. @end deftypevr +@deftypevr {Target Hook} bool TARGET_STRICT_ALIGN +True if it is beneficial to try stricter function or loop alignment on the target. +@end deftypevr + @defmac ASM_OUTPUT_DWARF_DELTA (@var{stream}, @var{size}, @var{label1}, @var{label2}) A C statement to issue assembly directives that create a difference @var{lab1} minus @var{lab2}, using an integer of the given @var{size}. @@ -11314,16 +11324,6 @@ routine for target specific customizations of the system printf and scanf formatter settings. @end defmac -@deftypevr {Target Hook} bool TARGET_RELAXED_ORDERING -If set to @code{true}, means that the target's memory model does not -guarantee that loads which do not depend on one another will access -main memory in the order of the instruction stream; if ordering is -important, an explicit memory barrier must be used. This is true of -many recent processors which implement a policy of ``relaxed,'' -``weak,'' or ``release'' memory consistency, such as Alpha, PowerPC, -and ia64. The default is @code{false}. -@end deftypevr - @deftypefn {Target Hook} {const char *} TARGET_INVALID_ARG_FOR_UNPROTOTYPED_FN (const_tree @var{typelist}, const_tree @var{funcdecl}, const_tree @var{val}) If defined, this macro returns the diagnostic message when it is illegal to pass argument @var{val} to function @var{funcdecl} @@ -11447,6 +11447,12 @@ Address Sanitizer shadow memory address. NULL if Address Sanitizer is not supported by the target. @end deftypefn +@deftypefn {Target Hook} rtx TARGET_SET_FP_INSN (void) +When flag_shrink_wrap_frame_pointer is true, fp setting insn should +be generated inside function body. The insertion is done after CFA +information is known. +@end deftypefn + @deftypefn {Target Hook} {unsigned HOST_WIDE_INT} TARGET_MEMMODEL_CHECK (unsigned HOST_WIDE_INT @var{val}) Validate target specific memory model mask bits. When NULL no target specific memory model bits are allowed. diff --git a/gcc-4.9/gcc/doc/tm.texi.in b/gcc-4.9/gcc/doc/tm.texi.in index fc040f5a9..3e9d2fbdc 100644 --- a/gcc-4.9/gcc/doc/tm.texi.in +++ b/gcc-4.9/gcc/doc/tm.texi.in @@ -3367,6 +3367,7 @@ defined and 0 otherwise. This is about eliminating the frame pointer and arg pointer. @hook TARGET_FRAME_POINTER_REQUIRED +@hook TARGET_CAN_OMIT_LEAF_FRAME_POINTER @findex get_frame_size @defmac INITIAL_FRAME_POINTER_OFFSET (@var{depth-var}) @@ -3714,8 +3715,6 @@ stack. @hook TARGET_SMALL_REGISTER_CLASSES_FOR_MODE_P -@hook TARGET_FLAGS_REGNUM - @node Scalar Return @subsection How Scalar Function Values Are Returned @cindex return values in registers @@ -4631,10 +4630,11 @@ for comparisons whose argument is a @code{plus}: @smallexample #define SELECT_CC_MODE(OP,X,Y) \ - (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \ - ? ((OP == EQ || OP == NE) ? CCFPmode : CCFPEmode) \ - : ((GET_CODE (X) == PLUS || GET_CODE (X) == MINUS \ - || GET_CODE (X) == NEG) \ + (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \ + ? ((OP == LT || OP == LE || OP == GT || OP == GE) \ + ? CCFPEmode : CCFPmode) \ + : ((GET_CODE (X) == PLUS || GET_CODE (X) == MINUS \ + || GET_CODE (X) == NEG || GET_CODE (x) == ASHIFT) \ ? CC_NOOVmode : CCmode)) @end smallexample @@ -4657,10 +4657,11 @@ then @code{REVERSIBLE_CC_MODE (@var{mode})} must be zero. You need not define this macro if it would always returns zero or if the floating-point format is anything other than @code{IEEE_FLOAT_FORMAT}. For example, here is the definition used on the SPARC, where floating-point -inequality comparisons are always given @code{CCFPEmode}: +inequality comparisons are given either @code{CCFPEmode} or @code{CCFPmode}: @smallexample -#define REVERSIBLE_CC_MODE(MODE) ((MODE) != CCFPEmode) +#define REVERSIBLE_CC_MODE(MODE) \ + ((MODE) != CCFPEmode && (MODE) != CCFPmode) @end smallexample @end defmac @@ -4670,7 +4671,7 @@ comparison done in CC_MODE @var{mode}. The macro is used only in case @code{REVERSIBLE_CC_MODE (@var{mode})} is nonzero. Define this macro in case machine has some non-standard way how to reverse certain conditionals. For instance in case all floating point conditions are non-trapping, compiler may -freely convert unordered compares to ordered one. Then definition may look +freely convert unordered compares to ordered ones. Then definition may look like: @smallexample @@ -4684,6 +4685,8 @@ like: @hook TARGET_CC_MODES_COMPATIBLE +@hook TARGET_FLAGS_REGNUM + @node Costs @section Describing Relative Costs of Operations @cindex costs of instructions @@ -7188,6 +7191,8 @@ tables, and hence is desirable if it works. @hook TARGET_DELAY_VARTRACK +@hook TARGET_STRICT_ALIGN + @defmac ASM_OUTPUT_DWARF_DELTA (@var{stream}, @var{size}, @var{label1}, @var{label2}) A C statement to issue assembly directives that create a difference @var{lab1} minus @var{lab2}, using an integer of the given @var{size}. @@ -8405,8 +8410,6 @@ routine for target specific customizations of the system printf and scanf formatter settings. @end defmac -@hook TARGET_RELAXED_ORDERING - @hook TARGET_INVALID_ARG_FOR_UNPROTOTYPED_FN @hook TARGET_INVALID_CONVERSION @@ -8451,6 +8454,8 @@ and the associated definitions of those functions. @hook TARGET_ASAN_SHADOW_OFFSET +@hook TARGET_SET_FP_INSN + @hook TARGET_MEMMODEL_CHECK @hook TARGET_ATOMIC_TEST_AND_SET_TRUEVAL |