diff options
| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-11-28 18:09:26 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-11-28 18:09:26 +0000 |
| commit | 8f9ea7914d6b8880b080c4a6d5b2fa979f948e80 (patch) | |
| tree | ac2618577cfde9967a56e67bf26ecd32a0196efc /gcc/doloop.c | |
| parent | 10582df7cd4a4433bdda159bb13fb6f88853b31c (diff) | |
| download | gcc-8f9ea7914d6b8880b080c4a6d5b2fa979f948e80.tar.gz | |
* doloop.c (doloop_modify_runtime): Properly select induction
variable; skip late entry test if biv initializer created by loop.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@47423 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/doloop.c')
| -rw-r--r-- | gcc/doloop.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/gcc/doloop.c b/gcc/doloop.c index be232d63e6c..cf50d685096 100644 --- a/gcc/doloop.c +++ b/gcc/doloop.c @@ -621,11 +621,23 @@ doloop_modify_runtime (loop, iterations_max, if (loop->scan_start) { + rtx iteration_var = loop_info->iteration_var; struct loop_ivs *ivs = LOOP_IVS (loop); - struct iv_class *bl - = REG_IV_CLASS (ivs, REGNO (loop_info->iteration_var)); + struct iv_class *bl; - if (INSN_LUID (bl->biv->insn) < INSN_LUID (loop->scan_start)) + if (REG_IV_TYPE (ivs, REGNO (iteration_var)) == BASIC_INDUCT) + bl = REG_IV_CLASS (ivs, REGNO (iteration_var)); + else if (REG_IV_TYPE (ivs, REGNO (iteration_var)) == GENERAL_INDUCT) + { + struct induction *v = REG_IV_INFO (ivs, REGNO (iteration_var)); + bl = REG_IV_CLASS (ivs, REGNO (v->src_reg)); + } + else + /* Iteration var must be an induction variable to get here. */ + abort(); + + if (INSN_UID (bl->biv->insn) < max_uid_for_loop + && INSN_LUID (bl->biv->insn) < INSN_LUID (loop->scan_start)) { if (loop_dump_stream) fprintf (loop_dump_stream, |