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| author | m.hayes <m.hayes@138bc75d-0d04-0410-961f-82ee72b054a4> | 1998-12-15 20:31:18 +0000 |
|---|---|---|
| committer | m.hayes <m.hayes@138bc75d-0d04-0410-961f-82ee72b054a4> | 1998-12-15 20:31:18 +0000 |
| commit | d888299dd1be062477975441b67b951a8bc9df11 (patch) | |
| tree | 9ef0e744d566ecaef9e587914a1a553ec59e674e /gcc/loop.h | |
| parent | ac63fdffca2bdc9c30ba82a4c69e6b016c82582c (diff) | |
| download | gcc-d888299dd1be062477975441b67b951a8bc9df11.tar.gz | |
* loop.h (loop_info): New field 'vtop'.
* loop.c (check_dbra_loop): Use loop_info->vtop rather than
scanning loop for vtop.
* unroll.c (subtract_reg_term, find_common_reg_term): New functions.
(loop_iterations): Use them to determine if loop has a constant
number of iterations. Set loop_info->vtop. Don't subtract
common reg term from initial_value and final_value if have a
do-while loop.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@24333 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/loop.h')
| -rw-r--r-- | gcc/loop.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/gcc/loop.h b/gcc/loop.h index 8d0055e1dd0..de6ce2f762e 100644 --- a/gcc/loop.h +++ b/gcc/loop.h @@ -176,7 +176,9 @@ struct loop_info 1: not unrolled. -1: completely unrolled >0: holds the unroll exact factor. */ - int unroll_number; + unsigned int unroll_number; + /* Non-zero if the loop has a NOTE_INSN_LOOP_VTOP. */ + rtx vtop; }; /* Definitions used by the basic induction variable discovery code. */ |