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| author | Graham Stott <grahams@redhat.com> | 2002-02-27 15:01:10 +0000 |
|---|---|---|
| committer | Graham Stott <grahams@gcc.gnu.org> | 2002-02-27 15:01:10 +0000 |
| commit | 8ed805d20c65c2b262321b16c2825d9df5836c97 (patch) | |
| tree | 7ed483297ee6b822dfdfa7fc51773ad97b0b8418 /gcc/unroll.c | |
| parent | fd478a0ad4be8fe0f7b1d2b50c01a4a8fc6a8ea9 (diff) | |
| download | gcc-8ed805d20c65c2b262321b16c2825d9df5836c97.zip gcc-8ed805d20c65c2b262321b16c2825d9df5836c97.tar.gz gcc-8ed805d20c65c2b262321b16c2825d9df5836c97.tar.bz2 | |
unroll.c (loop_iterations): Return 0 if the add_val for a BIV is REG.
* unroll.c (loop_iterations): Return 0 if the add_val for
a BIV is REG.
From-SVN: r50100
Diffstat (limited to 'gcc/unroll.c')
| -rw-r--r-- | gcc/unroll.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/gcc/unroll.c b/gcc/unroll.c index 9a0cfcf..2b94147 100644 --- a/gcc/unroll.c +++ b/gcc/unroll.c @@ -3744,7 +3744,18 @@ loop_iterations (loop) for (biv_inc = bl->biv; biv_inc; biv_inc = biv_inc->next_iv) { if (loop_insn_first_p (v->insn, biv_inc->insn)) - offset -= INTVAL (biv_inc->add_val); + { + if (REG_P (biv_inc->add_val)) + { + if (loop_dump_stream) + fprintf (loop_dump_stream, + "Loop iterations: Basic induction var add_val is REG %d.\n", + REGNO (biv_inc->add_val)); + return 0; + } + + offset -= INTVAL (biv_inc->add_val); + } } } if (loop_dump_stream) |