This is the last planned part of my series to try to make it easier for 
users to find information about command-line options (although as I've 
been going through this chapter I've been finding places that need 
copy-editing or technical corrections, which I'll handle separately). 
In this part, I've split the options relating to debugging GCC itself 
into a new section, separate from the one about producing debuggable code.

Here's the list of options remaining in the "Debugging Options" section:

@gccoptlist{-g  -g@var{level}  -gcoff  -gdwarf-@var{version} @gol
-ggdb  -grecord-gcc-switches  -gno-record-gcc-switches @gol
-gstabs  -gstabs+  -gstrict-dwarf  -gno-strict-dwarf @gol
-gvms  -gxcoff  -gxcoff+ -gz@r{[}=@var{type}@r{]} @gol
-fdebug-prefix-map=@var{old}=@var{new} -fdebug-types-section @gol
-feliminate-dwarf2-dups -fno-eliminate-unused-debug-types @gol
-femit-struct-debug-baseonly -femit-struct-debug-reduced @gol
-femit-struct-debug-detailed@r{[}=@var{spec-list}@r{]} @gol
-feliminate-unused-debug-symbols -femit-class-debug-always @gol
-fno-merge-debug-strings -fno-dwarf2-cfi-asm @gol
-fvar-tracking -fvar-tracking-assignments}

And here's the list in the new "GCC Developer Options" section:

@gccoptlist{-d@var{letters}  -dumpspecs  -dumpmachine  -dumpversion @gol
-fchecking -fdbg-cnt-list -fdbg-cnt=@var{counter-value-list} @gol
-fdisable-ipa-@var{pass_name} @gol
-fdisable-rtl-@var{pass_name} @gol
-fdisable-rtl-@var{pass-name}=@var{range-list} @gol
-fdisable-tree-@var{pass_name} @gol
-fdisable-tree-@var{pass-name}=@var{range-list} @gol
-fdump-noaddr -fdump-unnumbered -fdump-unnumbered-links @gol
-fdump-translation-unit@r{[}-@var{n}@r{]} @gol
-fdump-class-hierarchy@r{[}-@var{n}@r{]} @gol
-fdump-ipa-all -fdump-ipa-cgraph -fdump-ipa-inline @gol
-fdump-passes @gol
-fdump-rtl-@var{pass} -fdump-rtl-@var{pass}=@var{filename} @gol
-fdump-statistics @gol
-fdump-tree-all @gol
-fdump-tree-original@r{[}-@var{n}@r{]}  @gol
-fdump-tree-optimized@r{[}-@var{n}@r{]} @gol
-fdump-tree-cfg -fdump-tree-alias @gol
-fdump-tree-ch @gol
-fdump-tree-ssa@r{[}-@var{n}@r{]} -fdump-tree-pre@r{[}-@var{n}@r{]} @gol
-fdump-tree-ccp@r{[}-@var{n}@r{]} -fdump-tree-dce@r{[}-@var{n}@r{]} @gol
-fdump-tree-gimple@r{[}-raw@r{]} @gol
-fdump-tree-dom@r{[}-@var{n}@r{]} @gol
-fdump-tree-dse@r{[}-@var{n}@r{]} @gol
-fdump-tree-phiprop@r{[}-@var{n}@r{]} @gol
-fdump-tree-phiopt@r{[}-@var{n}@r{]} @gol
-fdump-tree-backprop@r{[}-@var{n}@r{]} @gol
-fdump-tree-forwprop@r{[}-@var{n}@r{]} @gol
-fdump-tree-nrv -fdump-tree-vect @gol
-fdump-tree-sink @gol
-fdump-tree-sra@r{[}-@var{n}@r{]} @gol
-fdump-tree-forwprop@r{[}-@var{n}@r{]} @gol
-fdump-tree-fre@r{[}-@var{n}@r{]} @gol
-fdump-tree-vtable-verify @gol
-fdump-tree-vrp@r{[}-@var{n}@r{]} @gol
-fdump-tree-split-paths@r{[}-@var{n}@r{]} @gol
-fdump-tree-storeccp@r{[}-@var{n}@r{]} @gol
-fdump-final-insns=@var{file} @gol
-fcompare-debug@r{[}=@var{opts}@r{]}  -fcompare-debug-second @gol
-fenable-@var{kind}-@var{pass} @gol
-fenable-@var{kind}-@var{pass}=@var{range-list} @gol
-fira-verbose=@var{n} @gol
-flto-report -flto-report-wpa -fmem-report-wpa @gol
-fmem-report -fpre-ipa-mem-report -fpost-ipa-mem-report @gol
-fopt-info -fopt-info-@var{options}@r{[}=@var{file}@r{]} @gol
-fprofile-report @gol
-frandom-seed=@var{string} -fsched-verbose=@var{n} @gol
-fsel-sched-verbose -fsel-sched-dump-cfg -fsel-sched-pipelining-verbose @gol
-fstats  -fstack-usage  -ftime-report @gol
-fvar-tracking-assignments-toggle -gtoggle @gol
-print-file-name=@var{library}  -print-libgcc-file-name @gol
-print-multi-directory  -print-multi-lib  -print-multi-os-directory @gol
-print-prog-name=@var{program}  -print-search-dirs  -Q @gol
-print-sysroot -print-sysroot-headers-suffix @gol
-save-temps -save-temps=cwd -save-temps=obj -time@r{[}=@var{file}@r{]}}

I've generally not touched the option descriptions, just moved them 
around.  The exception is that I incorporated some of the material from 
the -g description into the section introduction, and also added a 
pointer to -Og to the discussion about the interaction between -O and -g 
(having previously run into PR62225 myself).

I'll commit this in a couple days unless I hear complaints meanwhile.

-Sandra