--- a/gcc/common.opt	Sun Feb 07 18:28:00 2010 +0900
+++ b/gcc/common.opt	Fri Feb 12 23:39:51 2010 +0900
@@ -35,11 +35,11 @@
 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
@@ -47,6 +47,9 @@
 ftarget-help
 Common
 
+fversion
+Common
+
 -param
 Common Separate
 --param <param>=<value>	Set parameter <param> to value.  See below for a complete list of parameters
@@ -67,7 +70,7 @@
 Optimize for space rather than speed
 
 W
-Common RejectNegative
+Common RejectNegative Var(extra_warnings) Warning
 This switch is deprecated; use -Wextra instead
 
 Waggregate-return
@@ -103,7 +106,7 @@
 Treat specified warning as error
 
 Wextra
-Common Warning
+Common Var(extra_warnings) Warning
 Print extra (possibly unwanted) warnings
 
 Wfatal-errors
@@ -125,10 +128,6 @@
 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)
-Warn when a logical operator is suspicously always evaluating to true or false
-
 Wunsafe-loop-optimizations
 Common Var(warn_unsafe_loop_optimizations) Warning
 Warn if the loop cannot be optimized due to nontrivial assumptions.
@@ -198,7 +197,7 @@
 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
+Common Var(warn_uninitialized) Init(-1) Warning
 Warn about uninitialized automatic variables
 
 Wunreachable-code
@@ -381,6 +380,14 @@
 Common Report Var(flag_no_common,0) Optimization
 Do not put uninitialized globals in the common section
 
+fcompare-debug=
+Common JoinedOrMissing RejectNegative Var(flag_compare_debug_opt)
+-fcompare-debug[=<opts>] Compile with and without e.g. -gtoggle, and compare the final-insns dump
+
+fcompare-debug-second
+Common RejectNegative Var(flag_compare_debug)
+Run only the second compilation of -fcompare-debug
+
 fconserve-stack
 Common Var(flag_conserve_stack) Optimization
 Do not perform optimizations increasing noticeably stack usage
@@ -398,8 +405,8 @@
 When running CSE, follow jumps to their targets
 
 fcse-skip-blocks
-Common Report Var(flag_cse_skip_blocks) Optimization
-When running CSE, follow conditional jumps
+Common
+Does nothing.  Preserved for backward compatibility.
 
 fcx-limited-range
 Common Report Var(flag_cx_limited_range) Optimization
@@ -436,7 +443,7 @@
 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=
@@ -451,6 +458,10 @@
 Common Joined RejectNegative
 -fdump-<type>	Dump various compiler internals to a file
 
+fdump-final-insns=
+Common RejectNegative Joined Var(flag_dump_final_insns)
+-fdump-final-insns=filename	Dump to filename the insns at the end of translation
+
 fdump-noaddr
 Common Report Var(flag_dump_noaddr)
 Suppress output of addresses in debugging dumps
@@ -459,6 +470,10 @@
 Common Report Var(flag_dump_unnumbered) VarExists
 Suppress output of instruction numbers, line number notes and addresses in debugging dumps
 
+fdump-unnumbered-links
+Common Report Var(flag_dump_unnumbered_links) VarExists
+Suppress output of previous and next insn numbers 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.
@@ -471,6 +486,10 @@
 Common Report Var(flag_eliminate_dwarf2_dups)
 Perform DWARF2 duplicate elimination
 
+fipa-sra
+Common Report Var(flag_ipa_sra) Init(0) Optimization
+Perform interprocedural reduction of aggregates
+
 feliminate-unused-debug-symbols
 Common Report Var(flag_debug_only_used_symbols)
 Perform unused type elimination in debug info
@@ -483,6 +502,10 @@
 Common Report Var(flag_emit_class_debug_always) Init(0)
 Do not suppress C++ class debug information.
 
+fenable-icf-debug
+Common Report Var(flag_enable_icf_debug)
+Generate debug information to support Identical Code Folding (ICF)
+
 fexceptions
 Common Report Var(flag_exceptions) Optimization
 Enable exception handling
@@ -491,6 +514,10 @@
 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
 
@@ -552,6 +579,14 @@
 Common Report Var(flag_graphite)
 Enable in and out of Graphite representation
 
+fgraphite-identity
+Common Report Var(flag_graphite_identity) Optimization
+Enable Graphite Identity transformation
+
+floop-parallelize-all
+Common Report Var(flag_loop_parallelize_all) Optimization
+Mark all loops as parallel
+
 floop-strip-mine
 Common Report Var(flag_loop_strip_mine) Optimization
 Enable Loop Strip Mining transformation
@@ -564,11 +599,6 @@
 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
@@ -687,6 +717,11 @@
 Common Report Var(flag_ira_coalesce) Init(0)
 Do optimistic coalescing.
 
+fira-loop-pressure
+Common Report Var(flag_ira_loop_pressure)
+Use IRA based register pressure calculation
+in RTL loop optimizations.
+
 fira-share-save-slots
 Common Report Var(flag_ira_share_save_slots) Init(1)
 Share slots for saving different hard registers.
@@ -723,6 +758,19 @@
 Common
 Does nothing.  Preserved for backward compatibility.
 
+flto
+Common Var(flag_lto)
+Enable link-time optimization.
+
+; The initial value of -1 comes from Z_DEFAULT_COMPRESSION in zlib.h.
+flto-compression-level=
+Common Joined UInteger Var(flag_lto_compression_level) Init(-1)
+-flto-compression-level=<number> Use zlib compression level <number> for IL
+
+flto-report
+Common Report Var(flag_lto_report) Init(0) Optimization
+Report various link-time optimization statistics
+
 fmath-errno
 Common Report Var(flag_errno_math) Init(1) Optimization
 Set errno after built-in math functions
@@ -850,6 +898,14 @@
 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.
@@ -952,6 +1008,10 @@
 Common Report Var(flag_schedule_interblock) Init(1) Optimization
 Enable scheduling across basic blocks
 
+fsched-pressure
+Common Report Var(flag_sched_pressure) Init(0) Optimization
+Enable register pressure sensitive insn scheduling
+
 fsched-spec
 Common Report Var(flag_schedule_speculative) Init(1) Optimization
 Allow speculative motion of non-loads
@@ -1029,21 +1089,41 @@
 Common RejectNegative Joined UInteger
 -fsched-stalled-insns-dep=<number>	Set dependence distance checking in premature scheduling of queued insns
 
+fsched-group-heuristic
+Common Report Var(flag_sched_group_heuristic) Init(1) Optimization
+Enable the group heuristic in the scheduler
+
+fsched-critical-path-heuristic
+Common Report Var(flag_sched_critical_path_heuristic) Init(1) Optimization
+Enable the critical path heuristic in the scheduler
+
+fsched-spec-insn-heuristic
+Common Report Var(flag_sched_spec_insn_heuristic) Init(1) Optimization
+Enable the speculative instruction heuristic in the scheduler
+
+fsched-rank-heuristic
+Common Report Var(flag_sched_rank_heuristic) Init(1) Optimization
+Enable the rank heuristic in the scheduler
+
+fsched-last-insn-heuristic
+Common Report Var(flag_sched_last_insn_heuristic) Init(1) Optimization
+Enable the last instruction heuristic in the scheduler
+
+fsched-dep-count-heuristic
+Common Report Var(flag_sched_dep_count_heuristic) Init(1) Optimization
+Enable the dependent count heuristic in the scheduler
+
 fsection-anchors
 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.
+Common
+Does nothing.  Preserved for backward compatibility.
 
 fshow-column
-Common C ObjC C++ ObjC++ Report Var(flag_show_column) Init(0)
-Show column numbers in diagnostics, when available.  Default off
+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) Optimization
@@ -1195,6 +1275,10 @@
 Common Report Var(flag_tree_dse) Optimization
 Enable dead store elimination
 
+ftree-forwprop
+Common Report Var(flag_tree_forwprop) Init(1) Optimization
+Enable forward propagation on trees
+
 ftree-fre
 Common Report Var(flag_tree_fre) Optimization
 Enable Full Redundancy Elimination (FRE) on trees
@@ -1223,10 +1307,18 @@
 Common Report Joined UInteger Var(flag_tree_parallelize_loops) Init(1)
 Enable automatic parallelization of loops
 
+ftree-phiprop
+Common Report Var(flag_tree_phiprop) Init(1) Optimization
+Enable hoisting loads from conditional pointers.
+
 ftree-pre
 Common Report Var(flag_tree_pre) Optimization
 Enable SSA-PRE optimization on trees
 
+ftree-pta
+Common Report Var(flag_tree_pta) Init(1) Optimization
+Perform function-local points-to analysis on trees.
+
 ftree-reassoc
 Common Report Var(flag_tree_reassoc) Init(1) Optimization
 Enable reassociation on tree level
@@ -1299,10 +1391,21 @@
 Common Report Var(flag_unwind_tables) Optimization
 Just generate unwind tables for exception handling
 
+fuse-linker-plugin
+Common Undocumented
+
 fvar-tracking
 Common Report Var(flag_var_tracking) VarExists Optimization
 Perform variable tracking
 
+fvar-tracking-assignments
+Common Report Var(flag_var_tracking_assignments) VarExists Optimization
+Perform variable tracking by annotating assignments
+
+fvar-tracking-assignments-toggle
+Common Report Var(flag_var_tracking_assignments_toggle) VarExists Optimization
+Toggle -fvar-tracking-assignments
+
 fvar-tracking-uninit
 Common Report Var(flag_var_tracking_uninit) Optimization
 Perform variable tracking and also tag variables that are uninitialized
@@ -1311,6 +1414,10 @@
 Common Report Var(flag_tree_vectorize) Optimization
 Enable loop vectorization on trees
 
+ftree-slp-vectorize
+Common Report Var(flag_tree_slp_vectorize) Init(2) Optimization
+Enable basic block vectorization (SLP) on trees
+
 fvect-cost-model
 Common Report Var(flag_vect_cost_model) Optimization
 Enable use of cost model in vectorization
@@ -1350,6 +1457,10 @@
 Common Report Var(flag_web) Init(2) Optimization
 Construct webs and split unrelated uses of single variable
 
+fwhopr
+Common Var(flag_whopr)
+Enable partitioned link-time optimization.
+
 ftree-builtin-call-dce
 Common Report Var(flag_tree_builtin_call_dce) Init(0) Optimization
 Enable conditional dead code elimination for builtin calls
@@ -1371,12 +1482,12 @@
 Generate debug information in default format
 
 gcoff
-Common JoinedOrMissing Negative(gdwarf-2)
+Common JoinedOrMissing Negative(gdwarf-)
 Generate debug information in COFF format
 
-gdwarf-2
-Common JoinedOrMissing Negative(gstabs)
-Generate debug information in DWARF v2 format
+gdwarf-
+Common Joined UInteger Var(dwarf_version) Init(2) Negative(gstabs)
+Generate debug information in DWARF v2 (or later) format
 
 ggdb
 Common JoinedOrMissing
@@ -1390,6 +1501,18 @@
 Common JoinedOrMissing Negative(gvms)
 Generate debug information in extended STABS format
 
+gno-strict-dwarf
+Common RejectNegative Var(dwarf_strict,0) Init(-1)
+Emit DWARF additions beyond selected version
+
+gstrict-dwarf
+Common Report RejectNegative Var(dwarf_strict,1) VarExists
+Don't emit DWARF additions beyond selected version
+
+gtoggle
+Common Report Var(flag_gtoggle)
+Toggle debug information generation
+
 gvms
 Common JoinedOrMissing Negative(gxcoff)
 Generate debug information in VMS format