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| author | Anatoly Sokolov <aesok@post.ru> | 2009-06-25 01:16:25 +0400 |
|---|---|---|
| committer | Anatoly Sokolov <aesok@gcc.gnu.org> | 2009-06-25 01:16:25 +0400 |
| commit | 3be639f7468517f519a91a618ca0cf40ba76ba74 (patch) | |
| tree | 90090f3f1cb712cc6f22a6eff65e39c9ba91686f /gcc/doc | |
| parent | 70b28664eecba0763db09b28b6a81f38f9cec1d8 (diff) | |
| download | gcc-3be639f7468517f519a91a618ca0cf40ba76ba74.zip gcc-3be639f7468517f519a91a618ca0cf40ba76ba74.tar.gz gcc-3be639f7468517f519a91a618ca0cf40ba76ba74.tar.bz2 | |
defaults.h (CAN_ELIMINATE): Provide default.
* defaults.h (CAN_ELIMINATE): Provide default.
* doc/tm.texi (CAN_ELIMINATE): Revise documentation.
* config/alpha/alpha.h (CAN_ELIMINATE): Delete.
* config/m32c/m32c.h (CAN_ELIMINATE): Delete.
* config/spu/spu.h (CAN_ELIMINATE): Delete.
* config/xtensa/xtensa.h (CAN_ELIMINATE): Delete.
* config/moxie/moxie.h (CAN_ELIMINATE): Delete.
* config/cris/cris.h (CAN_ELIMINATE): Delete.
* config/mn10300/mn10300.h (CAN_ELIMINATE): Delete.
* config/pa/pa64-linux.h (CAN_ELIMINATE): Delete.
* config/mmix/mmix.h (CAN_ELIMINATE): Delete.
From-SVN: r148919
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/tm.texi | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index bc15583..a2c7562 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -3804,12 +3804,14 @@ specified first since that is the preferred elimination. @end defmac @defmac CAN_ELIMINATE (@var{from-reg}, @var{to-reg}) -A C expression that returns nonzero if the compiler is allowed to try +A C expression that returns @code{true} if the compiler is allowed to try to replace register number @var{from-reg} with register number @var{to-reg}. This macro need only be defined if @code{ELIMINABLE_REGS} -is defined, and will usually be the constant 1, since most of the cases +is defined, and will usually be @code{true}, since most of the cases preventing register elimination are things that the compiler already knows about. + +Default value is @code{true}. @end defmac @defmac INITIAL_ELIMINATION_OFFSET (@var{from-reg}, @var{to-reg}, @var{offset-var}) |