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invoke.texi (-fdump-rtl-combine): Fix under/overfull hbox. 

* doc/invoke.texi (-fdump-rtl-combine): Fix under/overfull hbox.
	(-fdump-rtl-stack): Likewise.
	(-fno-signed-zeros): Use @minus{} for a minus sign.  Correct typo.
	(-mcheck-zero-division, -mcpu): Fix under/overfull hbox.
	(-mpt-fixed): Use @minus{} for minus sign.
	(Using Precompiled Headers): Fix under/overfull hbox.


Co-Authored-By: Joseph Myers <joseph@codesourcery.com>

From-SVN: r121023
This commit is contained in:
Roger Sayle 2007-01-21 03:54:41 +00:00 committed by Roger Sayle
parent d48a05c3c4
commit 78681dbdee
2 changed files with 31 additions and 18 deletions
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10
gcc/ChangeLog
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@ -1,3 +1,13 @@
2007-01-20 Roger Sayle <roger@eyesopen.com>
Joseph Myers <joseph@codesourcery.com>
* doc/invoke.texi (-fdump-rtl-combine): Fix under/overfull hbox.
(-fdump-rtl-stack): Likewise.
(-fno-signed-zeros): Use @minus{} for a minus sign. Correct typo.
(-mcheck-zero-division, -mcpu): Fix under/overfull hbox.
(-mpt-fixed): Use @minus{} for minus sign.
(Using Precompiled Headers): Fix under/overfull hbox.
2007-01-20 Jan Hubicka <jh@suse.cz>
* tree-flow.h (struct stmt_ann_d): Move references_memory to proper

39
gcc/doc/invoke.texi
View File

@ -3876,7 +3876,8 @@ Dump after block reordering, to @file{@var{file}.148r.bbro}.
@itemx -fdump-rtl-combine
@opindex dc
@opindex fdump-rtl-combine
Dump after instruction combination, to the file @file{@var{file}.129r.combine}.
Dump after the RTL instruction combination pass, to the file
@file{@var{file}.129r.combine}.
@item -dC
@itemx -fdump-rtl-ce1
@ -3961,7 +3962,8 @@ Dump after the first jump optimization, to @file{@var{file}.112r.jump}.
@itemx -fdump-rtl-stack
@opindex dk
@opindex fdump-rtl-stack
Dump after conversion from registers to stack, to @file{@var{file}.152r.stack}.
Dump after conversion from GCC's "flat register file" registers to the
x87's stack-like registers, to @file{@var{file}.152r.stack}.
@item -dl
@itemx -fdump-rtl-lreg
@ -5690,8 +5692,8 @@ The default is @option{-fno-finite-math-only}.
@opindex fno-signed-zeros
Allow optimizations for floating point arithmetic that ignore the
signedness of zero. IEEE arithmetic specifies the behavior of
distinct +0.0 and -0.0 values, which then prohibits simplification
of expressions such as x+0.0 or 0.0*x (even with @option{-ffinte-math-only}).
distinct +0.0 and @minus{}0.0 values, which then prohibits simplification
of expressions such as x+0.0 or 0.0*x (even with @option{-ffinite-math-only}).
This option implies that the sign of a zero result isn't significant.
The default is @option{-fsigned-zeros}.
@ -11098,8 +11100,9 @@ to use an assembler that supports relocation operators.
@itemx -mno-check-zero-division
@opindex mcheck-zero-division
@opindex mno-check-zero-division
Trap (do not trap) on integer division by zero. The default is
@option{-mcheck-zero-division}.
Trap (do not trap) on integer division by zero.
The default is @option{-mcheck-zero-division}.
@item -mdivide-traps
@itemx -mdivide-breaks
@ -11709,12 +11712,12 @@ those options will run best on that processor, and may not run at all on
others.
The @option{-mcpu} options automatically enable or disable the
following options: @option{-maltivec}, @option{-mfprnd},
@option{-mhard-float}, @option{-mmfcrf}, @option{-mmultiple},
@option{-mnew-mnemonics}, @option{-mpopcntb}, @option{-mpower},
@option{-mpower2}, @option{-mpowerpc64}, @option{-mpowerpc-gpopt},
@option{-mpowerpc-gfxopt}, @option{-mstring}, @option{-mmulhw},
@option{-mdlmzb}, @option{-mmfpgpr}.
following options:
@gccoptlist{-maltivec -mfprnd -mhard-float -mmfcrf -mmultiple @gol
-mnew-mnemonics -mpopcntb -mpower -mpower2 -mpowerpc64 @gol
-mpowerpc-gpopt -mpowerpc-gfxopt -mstring -mmulhw -mdlmzb -mmfpgpr}
The particular options set for any particular CPU will vary between
compiler versions, depending on what setting seems to produce optimal
code for that CPU; it doesn't necessarily reflect the actual hardware's
@ -12786,11 +12789,11 @@ definition says that ptabs and ptrel trap when the target anded with 3 is 3.
This has the unintentional effect of making it unsafe to schedule ptabs /
ptrel before a branch, or hoist it out of a loop. For example,
__do_global_ctors, a part of libgcc that runs constructors at program
startup, calls functions in a list which is delimited by -1. With the
-mpt-fixed option, the ptabs will be done before testing against -1.
startup, calls functions in a list which is delimited by @minus{}1. With the
-mpt-fixed option, the ptabs will be done before testing against @minus{}1.
That means that all the constructors will be run a bit quicker, but when
the loop comes to the end of the list, the program crashes because ptabs
loads -1 into a target register. Since this option is unsafe for any
loads @minus{}1 into a target register. Since this option is unsafe for any
hardware implementing the current architecture specification, the default
is -mno-pt-fixed. Unless the user specifies a specific cost with
@option{-mgettrcost}, -mno-pt-fixed also implies @option{-mgettrcost=100};
@ -14305,9 +14308,9 @@ which options are safe to change and which are not; the safest choice
is to use exactly the same options when generating and using the
precompiled header. The following are known to be safe:
@gccoptlist{-fmessage-length= -fpreprocessed
-fsched-interblock -fsched-spec -fsched-spec-load -fsched-spec-load-dangerous
-fsched-verbose=<number> -fschedule-insns -fvisibility=
@gccoptlist{-fmessage-length= -fpreprocessed -fsched-interblock @gol
-fsched-spec -fsched-spec-load -fsched-spec-load-dangerous @gol
-fsched-verbose=<number> -fschedule-insns -fvisibility= @gol
-pedantic-errors}
@end itemize