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| author | Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz> | 2003-11-05 19:10:44 +0100 |
|---|---|---|
| committer | Zdenek Dvorak <rakdver@gcc.gnu.org> | 2003-11-05 18:10:44 +0000 |
| commit | 142d1f57d6c4a40bcf07a243bf71465bf72b1012 (patch) | |
| tree | 2803ac7a2623225480a95038c4747be2ab3b5082 /gcc/cfgloop.h | |
| parent | af09332e6d6c7f4970b62d1549f5cf0192b7a718 (diff) | |
| download | gcc-142d1f57d6c4a40bcf07a243bf71465bf72b1012.tar.gz | |
cfgloopanal.c (variable_initial_value, [...]): Record the fact that initial value is extended from inner mode.
* cfgloopanal.c (variable_initial_value, variable_initial_values,
simple_loop_exit_p): Record the fact that initial value is extended
from inner mode.
(count_strange_loop_iterations, count_loop_iterations): Handle
ivs that iterate in a narrower mode. Fix handling of overflows.
Improve handling of NE conditions.
(inverse, fits_in_mode_p): New static functions.
(simple_increment): Detect variables that iterate in a narrower mode.
* cfgloop.h (struct loop_desc): Fields inner_mode and extend added.
From-SVN: r73275
Diffstat (limited to 'gcc/cfgloop.h')
| -rw-r--r-- | gcc/cfgloop.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/cfgloop.h b/gcc/cfgloop.h index e879e522031..0ab1590c4dd 100644 --- a/gcc/cfgloop.h +++ b/gcc/cfgloop.h @@ -42,6 +42,9 @@ struct loop_desc int postincr; /* 1 if increment/decrement is done after loop exit condition. */ rtx stride; /* Value added to VAR in each iteration. */ rtx var; /* Loop control variable. */ + enum machine_mode inner_mode; + /* The mode from that it is extended. */ + enum rtx_code extend; /* With this extend. */ rtx var_alts; /* List of definitions of its initial value. */ rtx lim; /* Expression var is compared with. */ rtx lim_alts; /* List of definitions of its initial value. */ |