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| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/optabs.c | 9 |
2 files changed, 11 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 582f100..dc32386 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2001-05-20 Richard Henderson <rth@redhat.com> + + * optabs.c (emit_cmp_and_jump_insns): Don't swap commutative + operands unless the operation is commutative. + 2001-05-20 Kaveh R. Ghazi <ghazi@caip.rutgers.edu> * fold-const.c (tree_expr_nonnegative_p): Detect more non-negative diff --git a/gcc/optabs.c b/gcc/optabs.c index a2a42c6..1bc8aaf 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -3289,13 +3289,16 @@ emit_cmp_and_jump_insns (x, y, comparison, size, mode, unsignedp, align, label) { rtx op0; rtx op1; - - if (swap_commutative_operands_p (x, y)) + + /* We may not swap in the general case, since this is called from + compare_from_rtx, and we have no way of reporting the changed + comparison code. */ + if (comparison == swap_condition (comparison) + && swap_commutative_operands_p (x, y)) { /* Swap operands and condition to ensure canonical RTL. */ op0 = y; op1 = x; - comparison = swap_condition (comparison); } else { |