; Options for the language- and target-independent parts of the compiler.
-; Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008
+; Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009
; Free Software Foundation, Inc.
;
; This file is part of GCC.
Common
Alias for --help=target
-;; The following three entries are to work around the gcc driver
+;; The following four entries are to work around the gcc driver
;; program's insatiable desire to turn options starting with a
;; double dash (--) into options starting with a dash f (-f).
fhelp
-Common
+Common Var(help_flag)
fhelp=
Common Joined
ftarget-help
Common
+fversion
+Common
+
-param
Common Separate
--param <param>=<value> Set parameter <param> to value. See below for a complete list of parameters
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 Report Var(flag_no_common,0) Optimization
Do not put uninitialized globals in the common section
+fconserve-stack
+Common Var(flag_conserve_stack) 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
Attempt to fill delay slots of branch instructions
fdelete-null-pointer-checks
-Common Report Var(flag_delete_null_pointer_checks) Optimization
+Common Report Var(flag_delete_null_pointer_checks) Init(1) Optimization
Delete useless null pointer checks
fdiagnostics-show-location=
Common Report Var(flag_expensive_optimizations) Optimization
Perform a number of minor, expensive optimizations
+fexcess-precision=
+Common Joined RejectNegative
+-fexcess-precision=[fast|standard] Specify handling of excess floating-point precision
+
ffast-math
Common
Perform global common subexpression elimination after register allocation
has finished
+; This option is not documented yet as its semantics will change.
+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
+
+; This option is not documented as it does not perform any useful optimization.
+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_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-algorithm=
+Common Joined RejectNegative
+-fira-algorithm=[CB|priority] Set the used IRA algorithm
+
+fira-region=
+Common Joined RejectNegative
+-fira-region=[one|all|mixed] Set regions for IRA
+
+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
Common Report Var(flag_pie,1) VarExists
Generate position-independent code for executables if possible (small mode)
+fplugin=
+Common Joined RejectNegative
+Specify a plugin to load
+
+fplugin-arg-
+Common Joined RejectNegative
+-fplugin-arg-<name>-<key>[=<value>] Specify argument <key>=<value> for plugin <name>
+
fpredictive-commoning
Common Report Var(flag_predictive_commoning) Optimization
Run predictive commoning optimization.
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_section_anchors) Optimization
Access data in the same section from shared anchor points
-frtl-abstract-sequences
-Common Report Var(flag_rtl_seqabstr) Optimization
-Perform sequence abstraction optimization on RTL
-
fsee
Common Report Var(flag_see) Init(0)
Eliminate redundant sign extensions using LCM.
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
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