; Options for the language- and target-independent parts of the compiler.
-; Copyright (C) 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+; Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008
+; Free Software Foundation, Inc.
;
; This file is part of GCC.
;
-G<number> Put global and static data smaller than <number> bytes into a special section (on some targets)
O
-Common JoinedOrMissing
+Common JoinedOrMissing Optimization
-O<number> Set optimization level to <number>
Os
-Common
+Common Optimization
Optimize for space rather than speed
W
Common Var(warn_disabled_optimization) Warning
Warn when an optimization pass is disabled
+Wdisallowed-function-list=
+Common RejectNegative Joined Warning
+Warn on calls to these functions
+
Werror
Common Var(warnings_are_errors)
Treat all warnings as errors
Common Var(flag_fatal_errors)
Exit on the first error occurred
+Wframe-larger-than=
+Common RejectNegative Joined UInteger
+-Wframe-larger-than=<number> Warn if a function's stack frame requires more than <number> bytes
+
Winline
Common Var(warn_inline) Warning
Warn when an inlined function cannot be inlined
Wlarger-than-
Common RejectNegative Joined UInteger Warning
--Wlarger-than-<number> Warn if an object is larger than <number> bytes
+
+Wlarger-than=
+Common RejectNegative Joined UInteger Warning
+-Wlarger-than=<number> Warn if an object is larger than <number> bytes
Wlogical-op
Common Warning Var(warn_logical_op)
Common Var(warn_missing_noreturn) Warning
Warn about functions which might be candidates for __attribute__((noreturn))
+Wmudflap
+Common Var(warn_mudflap) Init(1) Warning
+Warn about constructs not instrumented by -fmudflap
+
Woverflow
Common Var(warn_overflow) Init(1) Warning
Warn about overflow in arithmetic expressions
Warn about code which might break strict aliasing rules
Wstrict-aliasing=
-Common Joined UInteger Warning
+Common Joined UInteger Var(warn_strict_aliasing) Init(-1) Warning
Warn about code which might break strict aliasing rules
Wstrict-overflow
Warn about optimizations that assume that signed overflow is undefined
Wstrict-overflow=
-Common Joined UInteger Warning
+Common Joined UInteger Var(warn_strict_overflow) Init(-1) Warning
Warn about optimizations that assume that signed overflow is undefined
Wswitch
Common Var(warn_system_headers) Warning
Do not suppress warnings from system headers
+Wtype-limits
+Common Var(warn_type_limits) Init(-1) Warning
+Warn if a comparison is always true or always false due to the limited range of the data type
+
Wuninitialized
Common Var(warn_uninitialized) Warning
Warn about uninitialized automatic variables
Warn about code that will never be executed
Wunused
-Common Warning
+Common Var(warn_unused) Init(0) Warning
Enable all -Wunused- warnings
Wunused-function
-Common Var(warn_unused_function) Warning
+Common Var(warn_unused_function) Init(-1) Warning
Warn when a function is unused
Wunused-label
-Common Var(warn_unused_label) Warning
+Common Var(warn_unused_label) Init(-1) Warning
Warn when a label is unused
Wunused-parameter
-Common Var(warn_unused_parameter) Warning
+Common Var(warn_unused_parameter) Init(-1) Warning
Warn when a function parameter is unused
Wunused-value
-Common Var(warn_unused_value) Warning
+Common Var(warn_unused_value) Init(-1) Warning
Warn when an expression value is unused
Wunused-variable
-Common Var(warn_unused_variable) Warning
+Common Var(warn_unused_variable) Init(-1) Warning
Warn when a variable is unused
-Wvolatile-register-var
-Common Var(warn_register_var) Warning
-Warn when a register variable is declared volatile
-
Wcoverage-mismatch
Common RejectNegative Var(warn_coverage_mismatch) Warning
Warn instead of error in case profiles in -fprofile-use do not match
Common Joined UInteger Var(flag_abi_version) Init(2)
falign-functions
-Common Report Var(align_functions,0)
+Common Report Var(align_functions,0) Optimization UInteger
Align the start of functions
falign-functions=
Common RejectNegative Joined UInteger
falign-jumps
-Common Report Var(align_jumps,0) Optimization
+Common Report Var(align_jumps,0) Optimization UInteger
Align labels which are only reached by jumping
falign-jumps=
Common RejectNegative Joined UInteger
falign-labels
-Common Report Var(align_labels,0) Optimization
+Common Report Var(align_labels,0) Optimization UInteger
Align all labels
falign-labels=
Common RejectNegative Joined UInteger
falign-loops
-Common Report Var(align_loops) Optimization
+Common Report Var(align_loops) Optimization UInteger
Align the start of loops
falign-loops=
Common Report Var(flag_no_common,0) Optimization
Do not put uninitialized globals in the common section
+fconserve-stack
+Common Var(flag_conserve_stack,0) Optimization
+Do not perform optimizations increasing noticeably stack usage
+
fcprop-registers
Common Report Var(flag_cprop_registers) Optimization
Perform a register copy-propagation optimization pass
Common Report Var(flag_cx_limited_range) Optimization
Omit range reduction step when performing complex division
+fcx-fortran-rules
+Common Report Var(flag_cx_fortran_rules) Optimization
+Complex multiplication and division follow Fortran rules
+
fdata-sections
Common Report Var(flag_data_sections) Optimization
Place data items into their own section
Common Report Var(flag_dump_unnumbered) VarExists
Suppress output of instruction numbers, line number notes and addresses in debugging dumps
+fdwarf2-cfi-asm
+Common Report Var(flag_dwarf2_cfi_asm) Init(HAVE_GAS_CFI_DIRECTIVE)
+Enable CFI tables via GAS assembler directives.
+
fearly-inlining
Common Report Var(flag_early_inlining) Init(1) Optimization
Perform early inlining
Perform global common subexpression elimination after register allocation
has finished
+fgraphite
+Common Report Var(flag_graphite)
+Enable in and out of Graphite representation
+
+floop-strip-mine
+Common Report Var(flag_loop_strip_mine) Optimization
+Enable Loop Strip Mining transformation
+
+floop-interchange
+Common Report Var(flag_loop_interchange) Optimization
+Enable Loop Interchange transformation
+
+floop-block
+Common Report Var(flag_loop_block) Optimization
+Enable Loop Blocking transformation
+
+fgraphite-identity
+Common Report Var(flag_graphite_identity) Optimization
+Enable Graphite Identity transformation
+
fguess-branch-probability
Common Report Var(flag_guess_branch_prob) Optimization
Enable guessing of branch probabilities
Common Report Var(flag_inhibit_size_directive)
Do not generate .size directives
+findirect-inlining
+Common Report Var(flag_indirect_inlining)
+Perform indirect inlining
+
; 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)
+Common Report Var(flag_no_inline,0) Init(0)
Pay attention to the \"inline\" keyword
finline-small-functions
Common Report Var(flag_ipa_cp) Optimization
Perform Interprocedural constant propagation
+fipa-cp-clone
+Common Report Var(flag_ipa_cp_clone) Optimization
+Perform cloning to make Interprocedural constant propagation stronger
+
fipa-pure-const
Common Report Var(flag_ipa_pure_const) Init(0) Optimization
Discover pure and const functions
Perform structure layout optimizations based
on profiling information.
+fira
+Common Report Var(flag_ira) Init(0)
+Use integrated register allocator.
+
+fira-algorithm=
+Common Joined RejectNegative
+-fira-algorithm=[regional|CB|mixed] Set the used IRA algorithm
+
+fira-coalesce
+Common Report Var(flag_ira_coalesce) Init(0)
+Do optimistic coalescing.
+
+fira-share-save-slots
+Common Report Var(flag_ira_share_save_slots) Init(1)
+Share slots for saving different hard registers.
+
+fira-share-spill-slots
+Common Report Var(flag_ira_share_spill_slots) Init(1)
+Share stack slots for spilled pseudo-registers.
+
+fira-verbose=
+Common RejectNegative Joined UInteger
+-fira-verbose=<number> Control IRA's level of diagnostic messages.
+
fivopts
Common Report Var(flag_ivopts) Init(1) Optimization
Optimize induction variables on trees
Does nothing. Preserved for backward compatibility.
fmath-errno
-Common Report Var(flag_errno_math) Init(1)
+Common Report Var(flag_errno_math) Init(1) Optimization
Set errno after built-in math functions
fmem-report
Common Report Var(flag_merge_constants,1) VarExists Optimization
Attempt to merge identical constants across compilation units
+fmerge-debug-strings
+Common Report Var(flag_merge_debug_strings) Init(1)
+Attempt to merge identical debug strings across compilation units
+
fmessage-length=
Common RejectNegative Joined UInteger
-fmessage-length=<number> Limit diagnostics to <number> characters per line. 0 suppresses line-wrapping
Common Report Var(flag_omit_frame_pointer) Optimization
When possible do not generate stack frames
-fopenmp-ssa
-Common Report Var(flag_openmp_ssa)
-Expand OpenMP operations on SSA form
-
foptimize-register-move
Common Report Var(flag_regmove) Optimization
Do the full register move optimization pass
Common Report Var(profile_arc_flag)
Insert arc-based program profiling code
+fprofile-dir=
+Common Joined RejectNegative
+Set the top-level directory for storing the profile data.
+The default is 'pwd'.
+
+fprofile-correction
+Common Report Var(flag_profile_correction)
+Enable correction of flow inconsistent profile data input
+
fprofile-generate
Common
Enable common options for generating profile info for profile feedback directed optimizations
+fprofile-generate=
+Common Joined RejectNegative
+Enable common options for generating profile info for profile feedback directed optimizations, and set -fprofile-dir=
+
fprofile-use
-Common
+Common Var(flag_profile_use)
Enable common options for performing profile feedback directed optimizations
+fprofile-use=
+Common Joined RejectNegative
+Enable common options for performing profile feedback directed optimizations, and set -fprofile-dir=
+
fprofile-values
Common Report Var(flag_profile_values)
Insert code to profile values of expressions
Common Report Var(flag_schedule_insns_after_reload) Optimization
Reschedule instructions after register allocation
+; This flag should be on when a target implements non-trivial
+; scheduling hooks, maybe saving some information for its own sake.
+; On IA64, for example, this is used for correct bundling.
+fselective-scheduling
+Common Report Var(flag_selective_scheduling) Optimization
+Schedule instructions using selective scheduling algorithm
+
+fselective-scheduling2
+Common Report Var(flag_selective_scheduling2) Optimization
+Run selective scheduling after reload
+
+fsel-sched-pipelining
+Common Report Var(flag_sel_sched_pipelining) Init(0) Optimization
+Perform software pipelining of inner loops during selective scheduling
+
+fsel-sched-pipelining-outer-loops
+Common Report Var(flag_sel_sched_pipelining_outer_loops) Init(0) Optimization
+Perform software pipelining of outer loops during selective scheduling
+
+fsel-sched-reschedule-pipelined
+Common Report Var(flag_sel_sched_reschedule_pipelined) Init(0) Optimization
+Reschedule pipelined regions without pipelining
+
; 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) Optimization
+Common Report Var(flag_sched_stalled_insns) Optimization UInteger
Allow premature scheduling of queued insns
fsched-stalled-insns=
; 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) Optimization
+Common Report Var(flag_sched_stalled_insns_dep,1) Init(1) Optimization UInteger
Set dependence distance checking in premature scheduling of queued insns
fsched-stalled-insns-dep=
Common Report Var(flag_variable_expansion_in_unroller) Optimization
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 RejectNegative Joined
+-fstack-check=[no|generic|specific] Insert stack checking code into the program
+
fstack-check
-Common Report Var(flag_stack_check)
-Insert stack checking code into the program
+Common Report
+Insert stack checking code into the program. Same as -fstack-check=specific
fstack-limit
Common
-ftls-model=[global-dynamic|local-dynamic|initial-exec|local-exec] Set the default thread-local storage code generation model
ftoplevel-reorder
-Common Report Var(flag_toplevel_reorder) Init(1) Optimization
+Common Report Var(flag_toplevel_reorder) Init(2) Optimization
Reorder top level functions, variables, and asms
ftracer
Enable SSA-CCP optimization on trees
ftree-store-ccp
-Common Report Var(flag_tree_store_ccp) Optimization
-Enable SSA-CCP optimization for stores and loads
+Common
+Does nothing. Preserved for backward compatibility.
ftree-ch
Common Report Var(flag_tree_ch) Optimization
Common Report Var(flag_tree_cselim) Init(2) Optimization
Transform condition stores into unconditional ones
+ftree-switch-conversion
+Common Report Var(flag_tree_switch_conversion) Optimization
+Perform conversions of switch initializations.
+
ftree-dce
Common Report Var(flag_tree_dce) Optimization
Enable SSA dead code elimination optimization on trees
Common Report Var(flag_tree_fre) Optimization
Enable Full Redundancy Elimination (FRE) on trees
+ftree-loop-distribution
+Common Report Var(flag_tree_loop_distribution) Optimization
+Enable loop distribution on trees
+
ftree-loop-im
Common Report Var(flag_tree_loop_im) Init(1) Optimization
Enable loop invariant motion on trees
Enable reassociation on tree level
ftree-salias
-Common Report Var(flag_tree_salias) Optimization
-Perform structural alias analysis
+Common
+Does nothing. Preserved for backward compatibility.
ftree-sink
Common Report Var(flag_tree_sink) Optimization
Perform scalar replacement of aggregates
ftree-ter
-Common Report Var(flag_tree_ter) Optimization
+Common Report Var(flag_tree_ter) Init(1) Optimization
Replace temporary expressions in the SSA->normal pass
ftree-lrs
Perform Value Range Propagation on trees
funit-at-a-time
-Common Report Var(flag_unit_at_a_time) Optimization
+Common Report Var(flag_unit_at_a_time) Init(1) Optimization
Compile whole compilation unit at a time
funroll-loops
Common Report Var(flag_web) Init(2) Optimization
Construct webs and split unrelated uses of single variable
+ftree-builtin-call-dce
+Common Report Var(flag_tree_builtin_call_dce) Init(0) Optimization
+Enable conditional dead code elimination for builtin calls
+
fwhole-program
Common Report Var(flag_whole_program) Init(0) Optimization
Perform whole program optimizations
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