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:
parent
d48a05c3c4
commit
78681dbdee
|
@ -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
|
||||
|
|
|
@ -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
|
||||
|
|
Loading…
Reference in New Issue