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| author | Richard Henderson <rth@redhat.com> | 2001-11-27 14:09:10 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2001-11-27 14:09:10 -0800 |
| commit | 9827f778db2e051f0803ef226ee3076fd7ef9d20 (patch) | |
| tree | dff365973b7e8ce8692d894aee674e1c1466698c /gcc/unroll.c | |
| parent | ec3fba5614d0ac97acf5a60164a4fdc0ad21791f (diff) | |
| download | gcc-9827f778db2e051f0803ef226ee3076fd7ef9d20.zip gcc-9827f778db2e051f0803ef226ee3076fd7ef9d20.tar.gz gcc-9827f778db2e051f0803ef226ee3076fd7ef9d20.tar.bz2 | |
unroll.c (loop_iterations): Move last change ...
* unroll.c (loop_iterations): Move last change ...
* doloop.c (doloop_modify_runtime): ... here.
From-SVN: r47387
Diffstat (limited to 'gcc/unroll.c')
| -rw-r--r-- | gcc/unroll.c | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/gcc/unroll.c b/gcc/unroll.c index 35ce939..4b7dd97 100644 --- a/gcc/unroll.c +++ b/gcc/unroll.c @@ -3706,41 +3706,6 @@ loop_iterations (loop) if (initial_value == 0) return 0; - /* Some code transformations can result in code akin to - - tmp = i + 1; - ... - goto scan_start; - top: - tmp = tmp + 1; - scan_start: - i = tmp; - if (i < n) goto top; - - We'll have already detected this form of loop in scan_loop, - and set loop->top and loop->scan_start appropriately. - - In this situation, we skip the increment the first time through - the loop, which results in an incorrect estimate of the number - of iterations. Adjust the initial value to compensate. */ - - if (loop->scan_start && loop->cont - && INSN_LUID (loop->scan_start) < INSN_LUID (loop->cont) - && INSN_LUID (bl->biv->insn) < INSN_LUID (loop->scan_start)) - { - if (loop_dump_stream) - fprintf (loop_dump_stream, - "Loop iterations: Basic induction var skips initial incr.\n"); - if (GET_CODE (increment) != CONST_INT) - { - if (loop_dump_stream) - fprintf (loop_dump_stream, - "Loop iterations: Can't adjust with non-constant incr.\n"); - return 0; - } - initial_value = plus_constant (initial_value, -INTVAL (increment)); - } - unsigned_p = 0; off_by_one = 0; switch (comparison_code) |