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author | obrien <obrien@FreeBSD.org> | 2000-05-27 02:25:28 +0000 |
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committer | obrien <obrien@FreeBSD.org> | 2000-05-27 02:25:28 +0000 |
commit | 890b30850f08010e6461f2af573cb7b53a82ef36 (patch) | |
tree | b725d094db3c58a89d4ee7be9eac2c5e09532e13 /contrib/gcc/unroll.c | |
parent | 89d6e979f6e51927c13633bc1c374b05a37d0238 (diff) | |
download | FreeBSD-src-890b30850f08010e6461f2af573cb7b53a82ef36.zip FreeBSD-src-890b30850f08010e6461f2af573cb7b53a82ef36.tar.gz |
Bring in bug fixes from the GCC anoncvs server's "gcc-2_95-branch"
branch as of May 26th, 2000. [these are changes March 31 - May 24th]
Diffstat (limited to 'contrib/gcc/unroll.c')
-rw-r--r-- | contrib/gcc/unroll.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/contrib/gcc/unroll.c b/contrib/gcc/unroll.c index d6dbcf0..376bc99 100644 --- a/contrib/gcc/unroll.c +++ b/contrib/gcc/unroll.c @@ -3682,10 +3682,14 @@ loop_iterations (loop_start, loop_end, loop_info) return 0; } - /* The only new registers that care created before loop iterations are - givs made from biv increments, so this should never occur. */ - - if ((unsigned) REGNO (iteration_var) >= reg_iv_type->num_elements) + /* The only new registers that are created before loop iterations + are givs made from biv increments or registers created by + load_mems. In the latter case, it is possible that try_copy_prop + will propagate a new pseudo into the old iteration register but + this will be marked by having the REG_USERVAR_P bit set. */ + + if ((unsigned) REGNO (iteration_var) >= reg_iv_type->num_elements + && ! REG_USERVAR_P (iteration_var)) abort (); iteration_info (iteration_var, &initial_value, &increment, |