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; Options for the language- and target-independent parts of the compiler.

; Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc.

;

; This file is part of GCC.

;

; GCC is free software; you can redistribute it and/or modify it under

; the terms of the GNU General Public License as published by the Free

; Software Foundation; either version 2, or (at your option) any later

; version.

;

; GCC is distributed in the hope that it will be useful, but WITHOUT ANY

; WARRANTY; without even the implied warranty of MERCHANTABILITY or

; FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

; for more details.

;

; You should have received a copy of the GNU General Public License

; along with GCC; see the file COPYING.  If not, write to the Free

; Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA

; 02110-1301, USA.

; See the GCC internals manual for a description of this file's format.

; Please try to keep this file in ASCII collating order.

-help

Common

Display this information

-param

Common Separate

--param =       Set parameter  to value.  See below for a complete list of parameters

-target-help

Common

-version

Common

G

Common Joined Separate UInteger

-G      Put global and static data smaller than  bytes into a special section (on some targets)

O

Common JoinedOrMissing

-O      Set optimization level to 

Os

Common

Optimize for space rather than speed

W

Common RejectNegative

This switch is deprecated; use -Wextra instead

Waggregate-return

Common Var(warn_aggregate_return)

Warn about returning structures, unions or arrays

Wattributes

Common Var(warn_attributes) Init(1)

Warn about inappropriate attribute usage

Wcast-align

Common Var(warn_cast_align)

Warn about pointer casts which increase alignment

Wdeprecated-declarations

Common Var(warn_deprecated_decl) Init(1)

Warn about uses of __attribute__((deprecated)) declarations

Wdisabled-optimization

Common Var(warn_disabled_optimization)

Warn when an optimization pass is disabled

Werror

Common Var(warnings_are_errors)

Treat all warnings as errors

Wextra

Common

Print extra (possibly unwanted) warnings

Wfatal-errors

Common Var(flag_fatal_errors)

Exit on the first error occurred

Winline

Common Var(warn_inline)

Warn when an inlined function cannot be inlined

Wlarger-than-

Common RejectNegative Joined UInteger

-Wlarger-than-  Warn if an object is larger than  bytes

Wunsafe-loop-optimizations

Common Var(warn_unsafe_loop_optimizations)

Warn if the loop cannot be optimized due to nontrivial assumptions.

Wmissing-noreturn

Common Var(warn_missing_noreturn)

Warn about functions which might be candidates for __attribute__((noreturn))

Wpacked

Common Var(warn_packed)

Warn when the packed attribute has no effect on struct layout

Wpadded

Common Var(warn_padded)

Warn when padding is required to align structure members

Wshadow

Common Var(warn_shadow)

Warn when one local variable shadows another

Wstack-protector

Common Var(warn_stack_protect)

Warn when not issuing stack smashing protection for some reason

Wstrict-aliasing

Common

Warn about code which might break strict aliasing rules

Wstrict-aliasing=

Common Joined UInteger

Warn about code which might break strict aliasing rules

Wswitch

Common Var(warn_switch)

Warn about enumerated switches, with no default, missing a case

Wswitch-default

Common Var(warn_switch_default)

Warn about enumerated switches missing a \"default:\" statement

Wswitch-enum

Common Var(warn_switch_enum)

Warn about all enumerated switches missing a specific case

Wsystem-headers

Common Var(warn_system_headers)

Do not suppress warnings from system headers

Wuninitialized

Common Var(warn_uninitialized)

Warn about uninitialized automatic variables

Wunreachable-code

Common Var(warn_notreached)

Warn about code that will never be executed

Wunused

Common

Enable all -Wunused- warnings

Wunused-function

Common Var(warn_unused_function)

Warn when a function is unused

Wunused-label

Common Var(warn_unused_label)

Warn when a label is unused

Wunused-parameter

Common Var(warn_unused_parameter)

Warn when a function parameter is unused

Wunused-value

Common Var(warn_unused_value)

Warn when an expression value is unused

Wunused-variable

Common Var(warn_unused_variable)

Warn when a variable is unused

Wvolatile-register-var

Common Var(warn_register_var)

Warn when a register variable is declared volatile

aux-info

Common Separate

-aux-info       Emit declaration information into 

aux-info=

Common Joined

auxbase

Common Separate

auxbase-strip

Common Separate

d

Common Joined

-d      Enable dumps from specific passes of the compiler

dumpbase

Common Separate

-dumpbase       Set the file basename to be used for dumps

; The version of the C++ ABI in use.  The following values are allowed:

;

; 0: The version of the ABI believed most conformant with the C++ ABI

;    specification.  This ABI may change as bugs are discovered and fixed.

;    Therefore, 0 will not necessarily indicate the same ABI in different

;    versions of G++.

;

; 1: The version of the ABI first used in G++ 3.2.

;

; Additional positive integers will be assigned as new versions of

; the ABI become the default version of the ABI.

fabi-version=

Common Joined UInteger Var(flag_abi_version) Init(2)

falign-functions

Common Report Var(align_functions,0)

Align the start of functions

falign-functions=

Common RejectNegative Joined UInteger

falign-jumps

Common Report Var(align_jumps,0)

Align labels which are only reached by jumping

falign-jumps=

Common RejectNegative Joined UInteger

falign-labels

Common Report Var(align_labels,0)

Align all labels

falign-labels=

Common RejectNegative Joined UInteger

falign-loops

Common Report Var(align_loops)

Align the start of loops

falign-loops=

Common RejectNegative Joined UInteger

; This flag is only tested if alias checking is enabled.

; 0 if pointer arguments may alias each other.  True in C.

; 1 if pointer arguments may not alias each other but may alias

;   global variables.

; 2 if pointer arguments may not alias each other and may not

;   alias global variables.  True in Fortran.

fargument-alias

Common Report Var(flag_argument_noalias,0)

Specify that arguments may alias each other and globals

fargument-noalias

Common Report Var(flag_argument_noalias,1) VarExists

Assume arguments may alias globals but not each other

fargument-noalias-global

Common Report Var(flag_argument_noalias,2) VarExists

Assume arguments alias neither each other nor globals

fasynchronous-unwind-tables

Common Report Var(flag_asynchronous_unwind_tables)

Generate unwind tables that are exact at each instruction boundary

; -fcheck-bounds causes gcc to generate array bounds checks.

; For C, C++ and ObjC: defaults off.

; For Java: defaults to on.

; For Fortran: defaults to off.

fbounds-check

Common Report Var(flag_bounds_check)

Generate code to check bounds before indexing arrays

fbranch-count-reg

Common Report Var(flag_branch_on_count_reg) Init(1)

Replace add, compare, branch with branch on count register

fbranch-probabilities

Common Report Var(flag_branch_probabilities)

Use profiling information for branch probabilities

fbranch-target-load-optimize

Common Report Var(flag_branch_target_load_optimize)

Perform branch target load optimization before prologue / epilogue threading

fbranch-target-load-optimize2

Common Report Var(flag_branch_target_load_optimize2)

Perform branch target load optimization after prologue / epilogue threading

fbtr-bb-exclusive

Common Report Var(flag_btr_bb_exclusive)

Restrict target load migration not to re-use registers in any basic block

fcall-saved-

Common Joined RejectNegative

-fcall-saved-   Mark  as being preserved across functions

fcall-used-

Common Joined RejectNegative

-fcall-used-    Mark  as being corrupted by function calls

; Nonzero for -fcaller-saves: allocate values in regs that need to

; be saved across function calls, if that produces overall better code.

; Optional now, so people can test it.

fcaller-saves

Common Report Var(flag_caller_saves)

Save registers around function calls

fcommon

Common Report Var(flag_no_common,0)

Do not put uninitialized globals in the common section

fcprop-registers

Common Report Var(flag_cprop_registers)

Perform a register copy-propagation optimization pass

fcrossjumping

Common Report Var(flag_crossjumping)

Perform cross-jumping optimization

fcse-follow-jumps

Common Report Var(flag_cse_follow_jumps)

When running CSE, follow jumps to their targets

fcse-skip-blocks

Common Report Var(flag_cse_skip_blocks)

When running CSE, follow conditional jumps

fcx-limited-range

Common Report Var(flag_cx_limited_range)

Omit range reduction step when performing complex division

fdata-sections

Common Report Var(flag_data_sections)

Place data items into their own section

; Nonzero for -fdefer-pop: don't pop args after each function call

; instead save them up to pop many calls' args with one insns.

fdefer-pop

Common Report Var(flag_defer_pop)

Defer popping functions args from stack until later

fdelayed-branch

Common Report Var(flag_delayed_branch)

Attempt to fill delay slots of branch instructions

fdelete-null-pointer-checks

Common Report Var(flag_delete_null_pointer_checks)

Delete useless null pointer checks

fdiagnostics-show-location=

Common Joined RejectNegative

-fdiagnostics-show-location=[once|every-line]   How often to emit source location at the beginning of line-wrapped diagnostics

fdiagnostics-show-option

Common

Amend appropriate diagnostic messages with the command line option that controls them

fdump-

Common Joined RejectNegative

-fdump- Dump various compiler internals to a file

fdump-unnumbered

Common Report Var(flag_dump_unnumbered) VarExists

Suppress output of instruction numbers and line number notes in debugging dumps

fearly-inlining

Common Report Var(flag_early_inlining) Init(1)

Perform early inlining

feliminate-dwarf2-dups

Common Report Var(flag_eliminate_dwarf2_dups)

Perform DWARF2 duplicate elimination

feliminate-unused-debug-symbols

Common Report Var(flag_debug_only_used_symbols)

Perform unused type elimination in debug info

feliminate-unused-debug-types

Common Report Var(flag_eliminate_unused_debug_types) Init(1)

Perform unused type elimination in debug info

fexceptions

Common Report Var(flag_exceptions)

Enable exception handling

fexpensive-optimizations

Common Report Var(flag_expensive_optimizations)

Perform a number of minor, expensive optimizations

ffast-math

Common

ffinite-math-only

Common Report Var(flag_finite_math_only)

Assume no NaNs or infinities are generated

ffixed-

Common Joined RejectNegative

-ffixed-        Mark  as being unavailable to the compiler

ffloat-store

Common Report Var(flag_float_store)

Don't allocate floats and doubles in extended-precision registers

; Nonzero for -fforce-addr: load memory address into a register before

; reference to memory.  This makes better cse but slower compilation.

fforce-addr

Common Report Var(flag_force_addr)

Copy memory address constants into registers before use

; Nonzero for -fforce-mem: load memory value into a register

; before arithmetic on it.  This makes better cse but slower compilation.

fforce-mem

Common Report Var(flag_force_mem)

Copy memory operands into registers before use

; Nonzero means don't put addresses of constant functions in registers.

; Used for compiling the Unix kernel, where strange substitutions are

; done on the assembly output.

ffunction-cse

Common Report Var(flag_no_function_cse,0)

Allow function addresses to be held in registers

ffunction-sections

Common Report Var(flag_function_sections)

Place each function into its own section

fgcse

Common Report Var(flag_gcse)

Perform global common subexpression elimination

fgcse-lm

Common Report Var(flag_gcse_lm) Init(1)

Perform enhanced load motion during global common subexpression elimination

fgcse-sm

Common Report Var(flag_gcse_sm) Init(0)

Perform store motion after global common subexpression elimination

fgcse-las

Common Report Var(flag_gcse_las) Init(0)

Perform redundant load after store elimination in global common subexpression

elimination

fgcse-after-reload

Common Report Var(flag_gcse_after_reload)

Perform global common subexpression elimination after register allocation

has finished

fguess-branch-probability

Common Report Var(flag_guess_branch_prob)

Enable guessing of branch probabilities

; Nonzero means ignore `#ident' directives.  0 means handle them.

; Generate position-independent code for executables if possible

; On SVR4 targets, it also controls whether or not to emit a

; string identifying the compiler.

fident

Common Report Var(flag_no_ident,0)

Process #ident directives

fif-conversion

Common Report Var(flag_if_conversion)

Perform conversion of conditional jumps to branchless equivalents

fif-conversion2

Common Report Var(flag_if_conversion2)

Perform conversion of conditional jumps to conditional execution

; -finhibit-size-directive inhibits output of .size for ELF.

; This is used only for compiling crtstuff.c,

; and it may be extended to other effects

; needed for crtstuff.c on other systems.

finhibit-size-directive

Common Report Var(flag_inhibit_size_directive)

Do not generate .size directives

; Nonzero means that functions declared `inline' will be treated

; as `static'.  Prevents generation of zillions of copies of unused

; static inline functions; instead, `inlines' are written out

; only when actually used.  Used in conjunction with -g.  Also

; does the right thing with #pragma interface.

finline

Common Report Var(flag_no_inline,0) Init(2)

Pay attention to the \"inline\" keyword

finline-functions

Common Report Var(flag_inline_functions)

Integrate simple functions into their callers

finline-functions-called-once

Common Report Var(flag_inline_functions_called_once) Init(1)

Integrate functions called once into their callers

finline-limit-

Common RejectNegative Joined UInteger

finline-limit=

Common RejectNegative Joined UInteger

-finline-limit= Limit the size of inlined functions to 

finstrument-functions

Common Report Var(flag_instrument_function_entry_exit)

Instrument function entry and exit with profiling calls

fipa-cp

Common Report Var(flag_ipa_cp)

Perform Interprocedural constant propagation

fipa-pure-const

Common Report Var(flag_ipa_pure_const) Init(0)

Discover pure and const functions

fipa-reference

Common Report Var(flag_ipa_reference) Init(0)

Discover readonly and non addressable static variables

fipa-type-escape

Common Report Var(flag_ipa_type_escape) Init(0)

Type based escape and alias analysis

fivopts

Common Report Var(flag_ivopts) Init(1)

Optimize induction variables on trees

fjump-tables

Common Var(flag_jump_tables) Init(1)

Use jump tables for sufficiently large switch statements

fkeep-inline-functions

Common Report Var(flag_keep_inline_functions)

Generate code for functions even if they are fully inlined

fkeep-static-consts

Common Report Var(flag_keep_static_consts) Init(1)

Emit static const variables even if they are not used

fleading-underscore

Common Report Var(flag_leading_underscore) Init(-1)

Give external symbols a leading underscore

floop-optimize

Common Report Var(flag_loop_optimize)

Perform loop optimizations

floop-optimize2

Common Report Var(flag_loop_optimize2)

Perform loop optimizations using the new loop optimizer

fmath-errno

Common Report Var(flag_errno_math) Init(1)

Set errno after built-in math functions

fmem-report

Common Report Var(mem_report)

Report on permanent memory allocation

; This will attempt to merge constant section constants, if 1 only

; string constants and constants from constant pool, if 2 also constant

; variables.

fmerge-all-constants

Common Report Var(flag_merge_constants,2) Init(1)

Attempt to merge identical constants and constant variables

fmerge-constants

Common Report Var(flag_merge_constants,1) VarExists

Attempt to merge identical constants across compilation units

fmessage-length=

Common RejectNegative Joined UInteger

-fmessage-length=       Limit diagnostics to  characters per line.  0 suppresses line-wrapping

fmodulo-sched

Common Report Var(flag_modulo_sched)

Perform SMS based modulo scheduling before the first scheduling pass

fmove-loop-invariants

Common Report Var(flag_move_loop_invariants)

Move loop invariant computations out of loops

fmudflap

Common RejectNegative Report Var(flag_mudflap)

Add mudflap bounds-checking instrumentation for single-threaded program

fmudflapth

Common RejectNegative Report Var(flag_mudflap_threads)

Add mudflap bounds-checking instrumentation for multi-threaded program

fmudflapir

Common RejectNegative Report Var(flag_mudflap_ignore_reads)

Ignore read operations when inserting mudflap instrumentation

freschedule-modulo-scheduled-loops

Common Report Var(flag_resched_modulo_sched)

Enable/Disable the traditional scheduling in loops that already passed modulo scheduling

fnon-call-exceptions

Common Report Var(flag_non_call_exceptions)

Support synchronous non-call exceptions

fomit-frame-pointer

Common Report Var(flag_omit_frame_pointer)

When possible do not generate stack frames

foptimize-register-move

Common Report Var(flag_regmove)

Do the full register move optimization pass

foptimize-sibling-calls

Common Report Var(flag_optimize_sibling_calls)

Optimize sibling and tail recursive calls

fpack-struct

Common Report Var(flag_pack_struct)

Pack structure members together without holes

fpack-struct=

Common RejectNegative Joined UInteger

-fpack-struct=  Set initial maximum structure member alignment

fpcc-struct-return

Common Report Var(flag_pcc_struct_return,1) VarExists

Return small aggregates in memory, not registers

fpeel-loops

Common Report Var(flag_peel_loops)

Perform loop peeling

fpeephole

Common Report Var(flag_no_peephole,0)

Enable machine specific peephole optimizations

fpeephole2

Common Report Var(flag_peephole2)

Enable an RTL peephole pass before sched2

fPIC

Common Report Var(flag_pic,2)

Generate position-independent code if possible (large mode)

fPIE

Common Report Var(flag_pie,2)

Generate position-independent code for executables if possible (large mode)

fpic

Common Report Var(flag_pic,1) VarExists

Generate position-independent code if possible (small mode)

fpie

Common Report Var(flag_pie,1) VarExists

Generate position-independent code for executables if possible (small mode)

fprefetch-loop-arrays

Common Report Var(flag_prefetch_loop_arrays)

Generate prefetch instructions, if available, for arrays in loops

fprofile

Common Report Var(profile_flag)

Enable basic program profiling code

fprofile-arcs

Common Report Var(profile_arc_flag)

Insert arc-based program profiling code

fprofile-generate

Common

Enable common options for generating profile info for profile feedback directed optimizations

fprofile-use

Common

Enable common options for performing profile feedback directed optimizations

fprofile-values

Common Report Var(flag_profile_values)

Insert code to profile values of expressions

frandom-seed

Common

frandom-seed=

Common Joined RejectNegative

-frandom-seed=  Make compile reproducible using 

freg-struct-return

Common Report Var(flag_pcc_struct_return,0) VarExists

Return small aggregates in registers

fregmove

Common Report Var(flag_regmove)

Enables a register move optimization

frename-registers

Common Report Var(flag_rename_registers) Init(2)

Perform a register renaming optimization pass

freorder-blocks

Common Report Var(flag_reorder_blocks)

Reorder basic blocks to improve code placement

freorder-blocks-and-partition

Common Report Var(flag_reorder_blocks_and_partition)

Reorder basic blocks and partition into hot and cold sections

freorder-functions

Common Report Var(flag_reorder_functions)

Reorder functions to improve code placement

frerun-cse-after-loop

Common Report Var(flag_rerun_cse_after_loop) Init(2)

Add a common subexpression elimination pass after loop optimizations

frerun-loop-opt

Common Report Var(flag_rerun_loop_opt)

Run the loop optimizer twice

frounding-math

Common Report Var(flag_rounding_math)

Disable optimizations that assume default FP rounding behavior

fsched-interblock

Common Report Var(flag_schedule_interblock) Init(1)

Enable scheduling across basic blocks

fsched-spec

Common Report Var(flag_schedule_speculative) Init(1)

Allow speculative motion of non-loads

fsched-spec-load

Common Report Var(flag_schedule_speculative_load)

Allow speculative motion of some loads

fsched-spec-load-dangerous

Common Report Var(flag_schedule_speculative_load_dangerous)

Allow speculative motion of more loads

fsched-verbose=

Common RejectNegative Joined

-fsched-verbose=        Set the verbosity level of the scheduler

fsched2-use-superblocks

Common Report Var(flag_sched2_use_superblocks)

If scheduling post reload, do superblock scheduling

fsched2-use-traces

Common Report Var(flag_sched2_use_traces)

If scheduling post reload, do trace scheduling

fschedule-insns

Common Report Var(flag_schedule_insns)

Reschedule instructions before register allocation

fschedule-insns2

Common Report Var(flag_schedule_insns_after_reload)

Reschedule instructions after register allocation

; sched_stalled_insns means that insns can be moved prematurely from the queue

; of stalled insns into the ready list.

fsched-stalled-insns

Common Report Var(flag_sched_stalled_insns)

Allow premature scheduling of queued insns

fsched-stalled-insns=

Common RejectNegative Joined UInteger

-fsched-stalled-insns=  Set number of queued insns that can be prematurely scheduled

; sched_stalled_insns_dep controls how many recently scheduled cycles will

; be examined for a dependency on a stalled insn that is candidate for

; premature removal from the queue of stalled insns into the ready list (has

; an effect only if the flag 'sched_stalled_insns' is set).

fsched-stalled-insns-dep

Common Report Var(flag_sched_stalled_insns_dep,1) Init(1)

Set dependence distance checking in premature scheduling of queued insns

fsched-stalled-insns-dep=

Common RejectNegative Joined UInteger

-fsched-stalled-insns-dep=      Set dependence distance checking in premature scheduling of queued insns

fshared-data

Common Report Var(flag_shared_data)

Mark data as shared rather than private

fshow-column

Common C ObjC C++ ObjC++ Report Var(flag_show_column) Init(1)

Show column numbers in diagnostics, when available.  Default on

fsignaling-nans

Common Report Var(flag_signaling_nans)

Disable optimizations observable by IEEE signaling NaNs

fsingle-precision-constant

Common Report Var(flag_single_precision_constant)

Convert floating point constants to single precision constants

fsplit-ivs-in-unroller

Common Report Var(flag_split_ivs_in_unroller) Init(1)

Split lifetimes of induction variables when loops are unrolled

fvariable-expansion-in-unroller

Common Report Var(flag_variable_expansion_in_unroller)

Apply variable expansion when loops are unrolled

; Emit code to probe the stack, to help detect stack overflow; also

; may cause large objects to be allocated dynamically.

fstack-check

Common Report Var(flag_stack_check)

Insert stack checking code into the program

fstack-limit

Common

fstack-limit-register=

Common RejectNegative Joined

-fstack-limit-register= Trap if the stack goes past 

fstack-limit-symbol=

Common RejectNegative Joined

-fstack-limit-symbol=   Trap if the stack goes past symbol 

fstack-protector

Common Report Var(flag_stack_protect, 1)

Use propolice as a stack protection method

fstack-protector-all

Common Report RejectNegative Var(flag_stack_protect, 2) VarExists

Use a stack protection method for every function

fstrength-reduce

Common Report Var(flag_strength_reduce)

Perform strength reduction optimizations

; Nonzero if we should do (language-dependent) alias analysis.

; Typically, this analysis will assume that expressions of certain

; types do not alias expressions of certain other types.  Only used

; if alias analysis (in general) is enabled.

fstrict-aliasing

Common Report Var(flag_strict_aliasing)

Assume strict aliasing rules apply

fsyntax-only

Common Report Var(flag_syntax_only)

Check for syntax errors, then stop

ftest-coverage

Common Report Var(flag_test_coverage)

Create data files needed by \"gcov\"

fthread-jumps

Common Report Var(flag_thread_jumps)

Perform jump threading optimizations

ftime-report

Common Report Var(time_report)

Report the time taken by each compiler pass

ftls-model=

Common Joined RejectNegative

-ftls-model=[global-dynamic|local-dynamic|initial-exec|local-exec]      Set the default thread-local storage code generation model

ftracer

Common Report Var(flag_tracer)

Perform superblock formation via tail duplication

; Zero means that floating-point math operations cannot generate a

; (user-visible) trap.  This is the case, for example, in nonstop

; IEEE 754 arithmetic.

ftrapping-math

Common Report Var(flag_trapping_math) Init(1)

Assume floating-point operations can trap

ftrapv

Common Report Var(flag_trapv)

Trap for signed overflow in addition, subtraction and multiplication

ftree-ccp

Common Report Var(flag_tree_ccp)

Enable SSA-CCP optimization on trees

ftree-store-ccp

Common Report Var(flag_tree_store_ccp)

Enable SSA-CCP optimization for stores and loads

ftree-ch

Common Report Var(flag_tree_ch)

Enable loop header copying on trees

ftree-combine-temps

Common Report Var(flag_tree_combine_temps)

Coalesce memory temporaries in the SSA->normal pass

ftree-copyrename

Common Report Var(flag_tree_copyrename)

Replace SSA temporaries with better names in copies

ftree-copy-prop

Common Report Var(flag_tree_copy_prop)

Enable copy propagation on trees

ftree-store-copy-prop

Common Report Var(flag_tree_store_copy_prop)

Enable copy propagation for stores and loads

ftree-dce

Common Report Var(flag_tree_dce)

Enable SSA dead code elimination optimization on trees

ftree-dominator-opts

Common Report Var(flag_tree_dom)

Enable dominator optimizations

ftree-dse

Common Report Var(flag_tree_dse)

Enable dead store elimination

ftree-fre

Common Report Var(flag_tree_fre)

Enable Full Redundancy Elimination (FRE) on trees

ftree-loop-im

Common Report Var(flag_tree_loop_im) Init(1)

Enable loop invariant motion on trees

ftree-loop-linear

Common Report Var(flag_tree_loop_linear)

Enable linear loop transforms on trees

ftree-loop-ivcanon

Common Report Var(flag_tree_loop_ivcanon) Init(1)

Create canonical induction variables in loops

ftree-loop-optimize

Common Report Var(flag_tree_loop_optimize) Init(1)

Enable loop optimizations on tree level

ftree-pre