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| author | Clinton Popetz <cpopetz@cygnus.com> | 2000-05-28 23:40:20 +0000 |
|---|---|---|
| committer | Clinton Popetz <cpopetz@gcc.gnu.org> | 2000-05-28 19:40:20 -0400 |
| commit | 1270c2550479c5b8d66a8879c7948dd694a3cc6e (patch) | |
| tree | 357926448ce8e064b4e214f3ed51f745241abf6a /gcc/tm.texi | |
| parent | bb078eb403f8be5f3976facaedf1c34e8a0b2f77 (diff) | |
| download | gcc-1270c2550479c5b8d66a8879c7948dd694a3cc6e.zip gcc-1270c2550479c5b8d66a8879c7948dd694a3cc6e.tar.gz gcc-1270c2550479c5b8d66a8879c7948dd694a3cc6e.tar.bz2 | |
lcm.c (make_preds_opaque): Fix comment.
* lcm.c (make_preds_opaque): Fix comment.
(optimize_mode_switching): Use NORMAL_MODE instead of
MODE_USES_IN_EXIT_BLOCK. Change leftover instance of
FP_MODE_NONE to no_mode. Rename MODE_AT_ENTRY to NORMAL_MODE.
Handle insertions before an existing NOTE_INSN_BASIC_BLOCK.
* tm.texi (OPTIMIZE_MODE_SWITCHING): Refer to NORMAL_MODE.
(MODE_USES_IN_EXIT_BLOCK): Delete.
(MODE_AT_ENTRY) Rename to NORMAL_MODE.
* sh.h (MODE_USES_IN_EXIT_BLOCK): Delete.
(MODE_AT_ENTRY): Rename to NORMAL_MODE.
(MODE_NEEDED): Don't look for USE.
(EPILOGUE_USES): Define.
From-SVN: r34243
Diffstat (limited to 'gcc/tm.texi')
| -rw-r--r-- | gcc/tm.texi | 17 |
1 files changed, 4 insertions, 13 deletions
diff --git a/gcc/tm.texi b/gcc/tm.texi index 766ea57..3b3f4b0 100644 --- a/gcc/tm.texi +++ b/gcc/tm.texi @@ -7275,7 +7275,7 @@ return non-zero for any @var{entity} that that needs mode-switching. If you define this macro, you also have to define @code{NUM_MODES_FOR_MODE_SWITCHING}, @code{MODE_NEEDED}, @code{MODE_PRIORITY_TO_MODE} and @code{EMIT_MODE_SET}. -@code{MODE_AT_ENTRY} and @code{MODE_USES_IN_EXIT_BLOCK} are optional. +@code{NORMAL_MODE} is optional. @findex NUM_MODES_FOR_MODE_SWITCHING @item NUM_MODES_FOR_MODE_SWITCHING @@ -7290,15 +7290,6 @@ In macros that take mode arguments / yield a mode result, modes are represented as numbers 0 .. N - 1. N is used to specify that no mode switch is needed / supplied. -@findex MODE_USES_IN_EXIT_BLOCK -@item MODE_USES_IN_EXIT_BLOCK -If this macro is defined, it is called for each exit block when mode switching -optimization is performed. Its return value should be the pattern of an insn, -or a sequence of insns. It is emitted before the return insn / use insns at -the end of the exit block. - -This is done before insns are examined for their need of any mode switching. - @findex MODE_NEEDED @item MODE_NEEDED (@var{entity}, @var{insn}) @var{entity} is an integer specifying a mode-switched entity. If @@ -7307,11 +7298,11 @@ return an integer value not larger than the corresponding element in NUM_MODES_FOR_MODE_SWITCHING, to denote the mode that @var{entity} must be switched into prior to the execution of INSN. -@findex MODE_AT_ENTRY -@item MODE_AT_ENTRY (@var{entity}) +@findex NORMAL_MODE +@item NORMAL_MODE (@var{entity}) If this macro is defined, it is evaluated for every @var{entity} that needs mode switching. It should evaluate to an integer, which is a mode that -@var{entity} is assumed to be switched to at function entry. +@var{entity} is assumed to be switched to at function entry and exit. @findex MODE_PRIORITY_TO_MODE @item MODE_PRIORITY_TO_MODE (@var{entity}, @var{n}) |