re PR middle-end/59658 (Document -f* flags enabled by -Og)
2018-11-14 Sandra Loosemore <sandra@codesourcery.com> PR middle-end/59658 gcc/ * doc/invoke.texi (Optimize Options): Clarify that -O0 and -Og also suppress many optimizations. Alphabetize option lists for -O1, -O2, and -Os. Add list of options disabled with -Og, and correct documentation for those options to say that. * opts.c (default_options_table): Sort table by level and option name, to make it easier to correlate to the manual. From-SVN: r266162
This commit is contained in:
Sandra Loosemore
Sandra Loosemore
parent
281d448d0c
commit
ded7b411a8
|
|
@ -1,3 +1,13 @@
|
|||
2018-11-14 Sandra Loosemore <sandra@codesourcery.com>
|
||||
|
||||
PR middle-end/59658
|
||||
* doc/invoke.texi (Optimize Options): Clarify that -O0 and -Og
|
||||
also suppress many optimizations. Alphabetize option lists for
|
||||
-O1, -O2, and -Os. Add list of options disabled with -Og, and
|
||||
correct documentation for those options to say that.
|
||||
* opts.c (default_options_table): Sort table by level and option
|
||||
name, to make it easier to correlate to the manual.
|
||||
|
||||
2018-11-14 Uros Bizjak <ubizjak@gmail.com>
|
||||
|
||||
* config/i386/i386.c (ix86_print_operand_address_as): Simplify
|
||||
|
|
|
|||
|
|
@ -7897,9 +7897,10 @@ each of them.
|
|||
Not all optimizations are controlled directly by a flag. Only
|
||||
optimizations that have a flag are listed in this section.
|
||||
|
||||
Most optimizations are only enabled if an @option{-O} level is set on
|
||||
the command line. Otherwise they are disabled, even if individual
|
||||
optimization flags are specified.
|
||||
Most optimizations are completely disabled at @option{-O0} or if an
|
||||
@option{-O} level is not set on the command line, even if individual
|
||||
optimization flags are specified. Similarly, @option{-Og} suppresses
|
||||
many optimization passes.
|
||||
|
||||
Depending on the target and how GCC was configured, a slightly different
|
||||
set of optimizations may be enabled at each @option{-O} level than
|
||||
|
|
@ -7919,9 +7920,14 @@ With @option{-O}, the compiler tries to reduce code size and execution
|
|||
time, without performing any optimizations that take a great deal of
|
||||
compilation time.
|
||||
|
||||
@c Note that in addition to the default_options_table list in opts.c,
|
||||
@c several optimization flags default to true but control optimization
|
||||
@c passes that are explicitly disabled at -O0.
|
||||
|
||||
@option{-O} turns on the following optimization flags:
|
||||
@gccoptlist{
|
||||
-fauto-inc-dec @gol
|
||||
|
||||
@c Please keep the following list alphabetized.
|
||||
@gccoptlist{-fauto-inc-dec @gol
|
||||
-fbranch-count-reg @gol
|
||||
-fcombine-stack-adjustments @gol
|
||||
-fcompare-elim @gol
|
||||
|
|
@ -7932,11 +7938,11 @@ compilation time.
|
|||
-fdse @gol
|
||||
-fforward-propagate @gol
|
||||
-fguess-branch-probability @gol
|
||||
-fif-conversion2 @gol
|
||||
-fif-conversion @gol
|
||||
-fif-conversion2 @gol
|
||||
-finline-functions-called-once @gol
|
||||
-fipa-pure-const @gol
|
||||
-fipa-profile @gol
|
||||
-fipa-pure-const @gol
|
||||
-fipa-reference @gol
|
||||
-fipa-reference-addressable @gol
|
||||
-fmerge-constants @gol
|
||||
|
|
@ -7959,11 +7965,11 @@ compilation time.
|
|||
-ftree-forwprop @gol
|
||||
-ftree-fre @gol
|
||||
-ftree-phiprop @gol
|
||||
-ftree-pta @gol
|
||||
-ftree-scev-cprop @gol
|
||||
-ftree-sink @gol
|
||||
-ftree-slsr @gol
|
||||
-ftree-sra @gol
|
||||
-ftree-pta @gol
|
||||
-ftree-ter @gol
|
||||
-funit-at-a-time}
|
||||
|
||||
|
|
@ -7976,10 +7982,12 @@ and the performance of the generated code.
|
|||
|
||||
@option{-O2} turns on all optimization flags specified by @option{-O}. It
|
||||
also turns on the following optimization flags:
|
||||
@gccoptlist{-fthread-jumps @gol
|
||||
-falign-functions -falign-jumps @gol
|
||||
-falign-loops -falign-labels @gol
|
||||
|
||||
@c Please keep the following list alphabetized!
|
||||
@gccoptlist{-falign-functions -falign-jumps @gol
|
||||
-falign-labels -falign-loops @gol
|
||||
-fcaller-saves @gol
|
||||
-fcode-hoisting @gol
|
||||
-fcrossjumping @gol
|
||||
-fcse-follow-jumps -fcse-skip-blocks @gol
|
||||
-fdelete-null-pointer-checks @gol
|
||||
|
|
@ -7989,11 +7997,8 @@ also turns on the following optimization flags:
|
|||
-fhoist-adjacent-loads @gol
|
||||
-finline-small-functions @gol
|
||||
-findirect-inlining @gol
|
||||
-fipa-cp @gol
|
||||
-fipa-bit-cp @gol
|
||||
-fipa-vrp @gol
|
||||
-fipa-sra @gol
|
||||
-fipa-icf @gol
|
||||
-fipa-bit-cp -fipa-cp -fipa-icf @gol
|
||||
-fipa-ra -fipa-sra -fipa-vrp @gol
|
||||
-fisolate-erroneous-paths-dereference @gol
|
||||
-flra-remat @gol
|
||||
-foptimize-sibling-calls @gol
|
||||
|
|
@ -8003,16 +8008,15 @@ also turns on the following optimization flags:
|
|||
-freorder-blocks-algorithm=stc @gol
|
||||
-freorder-blocks-and-partition -freorder-functions @gol
|
||||
-frerun-cse-after-loop @gol
|
||||
-fsched-interblock -fsched-spec @gol
|
||||
-fschedule-insns -fschedule-insns2 @gol
|
||||
-fsched-interblock -fsched-spec @gol
|
||||
-fstore-merging @gol
|
||||
-fstrict-aliasing @gol
|
||||
-fthread-jumps @gol
|
||||
-ftree-builtin-call-dce @gol
|
||||
-ftree-switch-conversion -ftree-tail-merge @gol
|
||||
-fcode-hoisting @gol
|
||||
-ftree-pre @gol
|
||||
-ftree-vrp @gol
|
||||
-fipa-ra}
|
||||
-ftree-switch-conversion -ftree-tail-merge @gol
|
||||
-ftree-vrp}
|
||||
|
||||
Please note the warning under @option{-fgcse} about
|
||||
invoking @option{-O2} on programs that use computed gotos.
|
||||
|
|
@ -8021,21 +8025,23 @@ invoking @option{-O2} on programs that use computed gotos.
|
|||
@opindex O3
|
||||
Optimize yet more. @option{-O3} turns on all optimizations specified
|
||||
by @option{-O2} and also turns on the following optimization flags:
|
||||
@gccoptlist{-finline-functions @gol
|
||||
-funswitch-loops @gol
|
||||
-fpredictive-commoning @gol
|
||||
-fgcse-after-reload @gol
|
||||
-ftree-loop-vectorize @gol
|
||||
-ftree-loop-distribution @gol
|
||||
-ftree-loop-distribute-patterns @gol
|
||||
|
||||
@c Please keep the following list alphabetized!
|
||||
@gccoptlist{-fgcse-after-reload @gol
|
||||
-finline-functions @gol
|
||||
-fipa-cp-clone
|
||||
-floop-interchange @gol
|
||||
-floop-unroll-and-jam @gol
|
||||
-fsplit-paths @gol
|
||||
-ftree-slp-vectorize @gol
|
||||
-fvect-cost-model @gol
|
||||
-ftree-partial-pre @gol
|
||||
-fpeel-loops @gol
|
||||
-fipa-cp-clone}
|
||||
-fpredictive-commoning @gol
|
||||
-fsplit-paths @gol
|
||||
-ftree-loop-distribute-patterns @gol
|
||||
-ftree-loop-distribution @gol
|
||||
-ftree-loop-vectorize @gol
|
||||
-ftree-partial-pre @gol
|
||||
-ftree-slp-vectorize @gol
|
||||
-funswitch-loops @gol
|
||||
-fvect-cost-model}
|
||||
|
||||
@item -O0
|
||||
@opindex O0
|
||||
|
|
@ -8044,13 +8050,16 @@ results. This is the default.
|
|||
|
||||
@item -Os
|
||||
@opindex Os
|
||||
Optimize for size. @option{-Os} enables all @option{-O2} optimizations that
|
||||
do not typically increase code size. It also performs further
|
||||
optimizations designed to reduce code size.
|
||||
Optimize for size. @option{-Os} enables all @option{-O2} optimizations
|
||||
except those that often increase code size:
|
||||
|
||||
@option{-Os} disables the following optimization flags:
|
||||
@gccoptlist{-falign-functions -falign-jumps -falign-loops @gol
|
||||
-falign-labels -fprefetch-loop-arrays}
|
||||
@gccoptlist{-falign-functions -falign-jumps @gol
|
||||
-falign-labels -falign-loops @gol
|
||||
-fprefetch-loop-arrays -freorder-blocks-algorithm=stc}
|
||||
|
||||
It also enables @option{-finline-functions}, causes the compiler to tune for
|
||||
code size rather than execution speed, and performs further optimizations
|
||||
designed to reduce code size.
|
||||
|
||||
@item -Ofast
|
||||
@opindex Ofast
|
||||
|
|
@ -8063,11 +8072,24 @@ specified, and @option{-fno-protect-parens}.
|
|||
|
||||
@item -Og
|
||||
@opindex Og
|
||||
Optimize debugging experience. @option{-Og} enables optimizations
|
||||
that do not interfere with debugging. It should be the optimization
|
||||
Optimize debugging experience. @option{-Og} should be the optimization
|
||||
level of choice for the standard edit-compile-debug cycle, offering
|
||||
a reasonable level of optimization while maintaining fast compilation
|
||||
and a good debugging experience.
|
||||
and a good debugging experience. It is a better choice than @option{-O0}
|
||||
for producing debuggable code because some compiler passes
|
||||
that collect debug information are disabled at @option{-O0}.
|
||||
|
||||
Like @option{-O0}, @option{-Og} completely disables a number of
|
||||
optimization passes so that individual options controlling them have
|
||||
no effect. Otherwise @option{-Og} enables all @option{-O1}
|
||||
optimization flags except for those that may interfere with debugging:
|
||||
|
||||
@gccoptlist{-fbranch-count-reg -fdelayed-branch @gol
|
||||
-fif-conversion -fif-conversion2 @gol
|
||||
-finline-functions-called-once @gol
|
||||
-fmove-loop-invariants -fssa-phiopt @gol
|
||||
-ftree-bit-ccp -ftree-pta -ftree-sra}
|
||||
|
||||
@end table
|
||||
|
||||
If you use multiple @option{-O} options, with or without level numbers,
|
||||
|
|
@ -8194,7 +8216,8 @@ caller even if they are not marked @code{inline}. If a call to a given
|
|||
function is integrated, then the function is not output as assembler code
|
||||
in its own right.
|
||||
|
||||
Enabled at levels @option{-O1}, @option{-O2}, @option{-O3} and @option{-Os}.
|
||||
Enabled at levels @option{-O1}, @option{-O2}, @option{-O3} and @option{-Os},
|
||||
but not @option{-Og}.
|
||||
|
||||
@item -fearly-inlining
|
||||
@opindex fearly-inlining
|
||||
|
|
@ -8322,7 +8345,8 @@ IA-64 and S/390. Note that the @option{-fno-branch-count-reg} option
|
|||
doesn't remove the decrement and branch instructions from the generated
|
||||
instruction stream introduced by other optimization passes.
|
||||
|
||||
The default is @option{-fbranch-count-reg} at @option{-O1} and higher.
|
||||
The default is @option{-fbranch-count-reg} at @option{-O1} and higher,
|
||||
except for @option{-Og}.
|
||||
|
||||
@item -fno-function-cse
|
||||
@opindex fno-function-cse
|
||||
|
|
@ -8490,14 +8514,16 @@ includes use of conditional moves, min, max, set flags and abs instructions, and
|
|||
some tricks doable by standard arithmetics. The use of conditional execution
|
||||
on chips where it is available is controlled by @option{-fif-conversion2}.
|
||||
|
||||
Enabled at levels @option{-O}, @option{-O2}, @option{-O3}, @option{-Os}.
|
||||
Enabled at levels @option{-O}, @option{-O2}, @option{-O3}, @option{-Os}, but
|
||||
not with @option{-Og}.
|
||||
|
||||
@item -fif-conversion2
|
||||
@opindex fif-conversion2
|
||||
Use conditional execution (where available) to transform conditional jumps into
|
||||
branch-less equivalents.
|
||||
|
||||
Enabled at levels @option{-O}, @option{-O2}, @option{-O3}, @option{-Os}.
|
||||
Enabled at levels @option{-O}, @option{-O2}, @option{-O3}, @option{-Os}, but
|
||||
not with @option{-Og}.
|
||||
|
||||
@item -fdeclone-ctor-dtor
|
||||
@opindex fdeclone-ctor-dtor
|
||||
|
|
@ -9072,7 +9098,8 @@ enabled by default at @option{-O} and higher.
|
|||
Perform sparse conditional bit constant propagation on trees and propagate
|
||||
pointer alignment information.
|
||||
This pass only operates on local scalar variables and is enabled by default
|
||||
at @option{-O} and higher. It requires that @option{-ftree-ccp} is enabled.
|
||||
at @option{-O1} and higher, except for @option{-Og}.
|
||||
It requires that @option{-ftree-ccp} is enabled.
|
||||
|
||||
@item -ftree-ccp
|
||||
@opindex ftree-ccp
|
||||
|
|
@ -9090,7 +9117,8 @@ enabled by default at @option{-O} and higher.
|
|||
@item -fssa-phiopt
|
||||
@opindex fssa-phiopt
|
||||
Perform pattern matching on SSA PHI nodes to optimize conditional
|
||||
code. This pass is enabled by default at @option{-O} and higher.
|
||||
code. This pass is enabled by default at @option{-O1} and higher,
|
||||
except for @option{-Og}.
|
||||
|
||||
@item -ftree-switch-conversion
|
||||
@opindex ftree-switch-conversion
|
||||
|
|
@ -9312,13 +9340,14 @@ that have support for @option{-pthread}.
|
|||
@item -ftree-pta
|
||||
@opindex ftree-pta
|
||||
Perform function-local points-to analysis on trees. This flag is
|
||||
enabled by default at @option{-O} and higher.
|
||||
enabled by default at @option{-O1} and higher, except for @option{-Og}.
|
||||
|
||||
@item -ftree-sra
|
||||
@opindex ftree-sra
|
||||
Perform scalar replacement of aggregates. This pass replaces structure
|
||||
references with scalars to prevent committing structures to memory too
|
||||
early. This flag is enabled by default at @option{-O} and higher.
|
||||
early. This flag is enabled by default at @option{-O1} and higher,
|
||||
except for @option{-Og}.
|
||||
|
||||
@item -fstore-merging
|
||||
@opindex fstore-merging
|
||||
|
|
@ -10475,7 +10504,7 @@ Enabled with @option{-O3} and/or @option{-fprofile-use}.
|
|||
@item -fmove-loop-invariants
|
||||
@opindex fmove-loop-invariants
|
||||
Enables the loop invariant motion pass in the RTL loop optimizer. Enabled
|
||||
at level @option{-O1}
|
||||
at level @option{-O1} and higher, except for @option{-Og}.
|
||||
|
||||
@item -fsplit-loops
|
||||
@opindex fsplit-loops
|
||||
|
|
|
|||
153
gcc/opts.c
153
gcc/opts.c
|
|
@ -435,116 +435,127 @@ maybe_default_options (struct gcc_options *opts,
|
|||
lang_mask, handlers, loc, dc);
|
||||
}
|
||||
|
||||
/* Table of options enabled by default at different levels. */
|
||||
/* Table of options enabled by default at different levels.
|
||||
Please keep this list sorted by level and alphabetized within
|
||||
each level; this makes it easier to keep the documentation
|
||||
in sync. */
|
||||
|
||||
static const struct default_options default_options_table[] =
|
||||
{
|
||||
/* -O1 optimizations. */
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fdefer_pop, NULL, 1 },
|
||||
#if DELAY_SLOTS
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fdelayed_branch, NULL, 1 },
|
||||
#endif
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fguess_branch_probability, NULL, 1 },
|
||||
/* -O1 and -Og optimizations. */
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fcombine_stack_adjustments, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fcompare_elim, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fcprop_registers, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fdefer_pop, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fforward_propagate, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fif_conversion, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fif_conversion2, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fguess_branch_probability, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fipa_profile, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fipa_pure_const, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fipa_reference, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fipa_reference_addressable, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fipa_profile, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fmerge_constants, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_freorder_blocks, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fshrink_wrap, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fsplit_wide_types, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_ftree_builtin_call_dce, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_ftree_ccp, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_bit_ccp, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_ftree_ch, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_ftree_coalesce_vars, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_ftree_copy_prop, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_ftree_dce, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_ftree_dominator_opts, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_ftree_dse, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_ftree_ter, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_sra, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_ftree_fre, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_ftree_copy_prop, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_ftree_sink, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_ftree_ch, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fcombine_stack_adjustments, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fcompare_elim, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_ftree_slsr, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fbranch_count_reg, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fmove_loop_invariants, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_pta, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fssa_phiopt, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_ftree_builtin_call_dce, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS, OPT_ftree_ter, NULL, 1 },
|
||||
|
||||
/* -O2 optimizations. */
|
||||
{ OPT_LEVELS_2_PLUS, OPT_finline_small_functions, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_findirect_inlining, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fpartial_inlining, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fthread_jumps, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fcrossjumping, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_foptimize_sibling_calls, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fcse_follow_jumps, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fgcse, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fexpensive_optimizations, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_frerun_cse_after_loop, NULL, 1 },
|
||||
/* -O1 (and not -Og) optimizations. */
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fbranch_count_reg, NULL, 1 },
|
||||
#if DELAY_SLOTS
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fdelayed_branch, NULL, 1 },
|
||||
#endif
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fif_conversion, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fif_conversion2, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_finline_functions_called_once, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fmove_loop_invariants, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_fssa_phiopt, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_bit_ccp, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_sra, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_ftree_pta, NULL, 1 },
|
||||
|
||||
/* -O2 and -Os optimizations. */
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fcaller_saves, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fcode_hoisting, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fcrossjumping, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fcse_follow_jumps, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fdevirtualize, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fdevirtualize_speculatively, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fexpensive_optimizations, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fgcse, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fhoist_adjacent_loads, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_findirect_inlining, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_finline_small_functions, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fipa_bit_cp, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fipa_cp, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fipa_icf, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fipa_ra, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fipa_sra, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fipa_vrp, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fisolate_erroneous_paths_dereference, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_flra_remat, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_foptimize_sibling_calls, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fpartial_inlining, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fpeephole2, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_freorder_functions, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_frerun_cse_after_loop, NULL, 1 },
|
||||
#ifdef INSN_SCHEDULING
|
||||
/* Only run the pre-regalloc scheduling pass if optimizing for speed. */
|
||||
{ OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_fschedule_insns, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fschedule_insns2, NULL, 1 },
|
||||
#endif
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fstrict_aliasing, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_freorder_blocks_algorithm_, NULL,
|
||||
REORDER_BLOCKS_ALGORITHM_STC },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_freorder_functions, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_ftree_vrp, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fcode_hoisting, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fstore_merging, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fthread_jumps, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_ftree_pre, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_ftree_switch_conversion, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fipa_cp, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fipa_bit_cp, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fipa_vrp, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fdevirtualize, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fdevirtualize_speculatively, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fipa_sra, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_falign_loops, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_ftree_tail_merge, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_ftree_vrp, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fvect_cost_model_, NULL, VECT_COST_MODEL_CHEAP },
|
||||
|
||||
/* -O2 and -Os optimizations. */
|
||||
{ OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_falign_functions, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_falign_jumps, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_falign_labels, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_falign_functions, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_ftree_tail_merge, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fvect_cost_model_, NULL, VECT_COST_MODEL_CHEAP },
|
||||
{ OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_falign_loops, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_foptimize_strlen, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fhoist_adjacent_loads, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fipa_icf, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fisolate_erroneous_paths_dereference, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fipa_ra, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_flra_remat, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS, OPT_fstore_merging, NULL, 1 },
|
||||
{ OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_freorder_blocks_algorithm_, NULL,
|
||||
REORDER_BLOCKS_ALGORITHM_STC },
|
||||
#ifdef INSN_SCHEDULING
|
||||
/* Only run the pre-regalloc scheduling pass if optimizing for speed. */
|
||||
{ OPT_LEVELS_2_PLUS_SPEED_ONLY, OPT_fschedule_insns, NULL, 1 },
|
||||
#endif
|
||||
|
||||
/* -O3 optimizations. */
|
||||
{ OPT_LEVELS_3_PLUS, OPT_ftree_loop_distribute_patterns, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_ftree_loop_distribution, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_floop_interchange, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_fpredictive_commoning, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_fsplit_paths, NULL, 1 },
|
||||
/* -O3 and -Os optimizations. */
|
||||
/* Inlining of functions reducing size is a good idea with -Os
|
||||
regardless of them being declared inline. */
|
||||
{ OPT_LEVELS_3_PLUS_AND_SIZE, OPT_finline_functions, NULL, 1 },
|
||||
{ OPT_LEVELS_1_PLUS_NOT_DEBUG, OPT_finline_functions_called_once, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_fsplit_loops, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_funswitch_loops, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_floop_unroll_and_jam, NULL, 1 },
|
||||
|
||||
/* -O3 optimizations. */
|
||||
{ OPT_LEVELS_3_PLUS, OPT_fgcse_after_reload, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_ftree_loop_vectorize, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_ftree_slp_vectorize, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_fvect_cost_model_, NULL, VECT_COST_MODEL_DYNAMIC },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_fipa_cp_clone, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_ftree_partial_pre, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_floop_interchange, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_floop_unroll_and_jam, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_fpeel_loops, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_fpredictive_commoning, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_fsplit_loops, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_fsplit_paths, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_ftree_loop_distribute_patterns, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_ftree_loop_distribution, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_ftree_loop_vectorize, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_ftree_partial_pre, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_ftree_slp_vectorize, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_funswitch_loops, NULL, 1 },
|
||||
{ OPT_LEVELS_3_PLUS, OPT_fvect_cost_model_, NULL, VECT_COST_MODEL_DYNAMIC },
|
||||
|
||||
/* -Ofast adds optimizations to -O3. */
|
||||
{ OPT_LEVELS_FAST, OPT_ffast_math, NULL, 1 },
|
||||
|
|
|
|||
Loading…
Reference in New Issue