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| author | Richard Kenner <kenner@gcc.gnu.org> | 1995-06-26 19:17:37 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1995-06-26 19:17:37 -0400 |
| commit | f47f2c17db22e355a48c7aa99ff3ce4529f24b80 (patch) | |
| tree | f2e4130180fa5dec890cac26daadb178578c542a | |
| parent | 0184223489d6ddf887c169e01dc9cd7325677fbc (diff) | |
| download | gcc-f47f2c17db22e355a48c7aa99ff3ce4529f24b80.zip gcc-f47f2c17db22e355a48c7aa99ff3ce4529f24b80.tar.gz gcc-f47f2c17db22e355a48c7aa99ff3ce4529f24b80.tar.bz2 | |
(find_splittable_regs): When completely unrolling loop, check for
non-invariant initial biv values.
From-SVN: r10056
| -rw-r--r-- | gcc/unroll.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/gcc/unroll.c b/gcc/unroll.c index 0d6e693..76543d9 100644 --- a/gcc/unroll.c +++ b/gcc/unroll.c @@ -2397,12 +2397,13 @@ find_splittable_regs (unroll_type, loop_start, loop_end, end_insert_before, { /* If the initial value of the biv is itself (i.e. it is too complicated for strength_reduce to compute), or is a hard - register, then we must create a new pseudo reg to hold the - initial value of the biv. */ + register, or it isn't invariant, then we must create a new + pseudo reg to hold the initial value of the biv. */ if (GET_CODE (bl->initial_value) == REG && (REGNO (bl->initial_value) == bl->regno - || REGNO (bl->initial_value) < FIRST_PSEUDO_REGISTER)) + || REGNO (bl->initial_value) < FIRST_PSEUDO_REGISTER + || ! invariant_p (bl->initial_value))) { rtx tem = gen_reg_rtx (bl->biv->mode); |