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| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/combine.c | 6 |
2 files changed, 8 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 6b70bbb..885b739 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,9 @@ 2000-05-30 Richard Henderson <rth@cygnus.com> + * combine.c (get_pos_from_mask): Test exact_log2 result as signed. + +2000-05-30 Richard Henderson <rth@cygnus.com> + * bb-reorder.c (emit_jump_to_block_after): Protect use of HAVE_return. 2000-05-30 Bruce Korb <bkorb@gnu.org> diff --git a/gcc/combine.c b/gcc/combine.c index 47642f3..8d7cadc 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -6588,17 +6588,19 @@ get_pos_from_mask (m, plen) { /* Get the bit number of the first 1 bit from the right, -1 if none. */ int pos = exact_log2 (m & - m); + int len; if (pos < 0) return -1; /* Now shift off the low-order zero bits and see if we have a power of two minus 1. */ - *plen = exact_log2 ((m >> pos) + 1); + len = exact_log2 ((m >> pos) + 1); - if (*plen <= 0) + if (len <= 0) return -1; + *plen = len; return pos; } |