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| author | David Edelsohn <edelsohn@mhpcc.edu> | 1998-10-05 22:03:25 +0000 |
|---|---|---|
| committer | David Edelsohn <dje@gcc.gnu.org> | 1998-10-05 18:03:25 -0400 |
| commit | cac8ce95a1e4c7b10f5847d35b3650e6fba8d38c (patch) | |
| tree | 73ad9f3c2b5d7897f532583b4fa7c64ee081961a /gcc/loop.h | |
| parent | d64db93fbcb807f996f5b7204603c18893a7b0b9 (diff) | |
| download | gcc-cac8ce95a1e4c7b10f5847d35b3650e6fba8d38c.zip gcc-cac8ce95a1e4c7b10f5847d35b3650e6fba8d38c.tar.gz gcc-cac8ce95a1e4c7b10f5847d35b3650e6fba8d38c.tar.bz2 | |
unroll.c (loop_iteration_var, [...]): No longer static.
* unroll.c (loop_iteration_var, loop_initial_value, loop_increment
loop_final_value, loop_comparison_code): No longer static.
(unroll_loop): Delete loop_start_value update.
* loop.h (loop_iteration_var, loop_initial_value, loop_increment,
loop_final_value, loop_comparison_code): Extern.
(loop_start_value): Delete extern.
* loop.c (loop_can_insert_bct, loop_increment, loop_start_value,
loop_comparison_value, loop_comparison_code): Delete.
(loop_optimize): Remove initialization for deleted variables.
(strength_reduce): Delete analyze_loop_iterations call. Only call
insert_bct if flag_branch_count_on_reg set.
(analyze_loop_iterations): Delete.
(insert_bct): Remove iteration count calculation. Move checks for
viable BCT optimization to here. Obtain iteration count from
loop_iterations and correct for unrolling. Check for enough
iteration to be beneficial. Comment out runtime iteration count
case.
(insert_bct): Print iteration count in dump file. Remove
loop_var_mode and use word_mode directly.
* rs6000.h (processor_type): Add PROCESSOR_PPC604e.
* rs6000.c (rs6000_override_options): Use it.
(optimization_options): Enable use of flag_branch_on_count_reg.
* rs6000.md (define_function_unit): Describe 604e.
From-SVN: r22852
Diffstat (limited to 'gcc/loop.h')
| -rw-r--r-- | gcc/loop.h | 15 |
1 files changed, 9 insertions, 6 deletions
@@ -1,5 +1,5 @@ /* Loop optimization definitions for GNU C-Compiler - Copyright (C) 1991, 1995 Free Software Foundation, Inc. + Copyright (C) 1991, 1995, 1998 Free Software Foundation, Inc. This file is part of GNU CC. @@ -184,9 +184,12 @@ void emit_unrolled_add PROTO((rtx, rtx, rtx)); int back_branch_in_range_p PROTO((rtx, rtx, rtx)); extern int *loop_unroll_factor; -#ifdef HAIFA -/* variables for interaction between unroll.c and loop.c, for - the insertion of branch-on-count instruction. */ -extern rtx *loop_start_value; -#endif /* HAIFA */ + +#ifdef HAVE_decrement_and_branch_on_count +extern rtx loop_iteration_var; +extern rtx loop_initial_value; +extern rtx loop_increment; +extern rtx loop_final_value; +extern enum rtx_code loop_comparison_code; +#endif /* HAVE_decrement_and_branch_on_count */ |