diff options
Diffstat (limited to 'profile.c')
| -rw-r--r-- | profile.c | 26 |
1 files changed, 24 insertions, 2 deletions
@@ -1237,6 +1237,26 @@ pp_parenthesize(NODE *sp) sp->flags |= CAN_FREE; } +/* div_on_left_mul_on_right --- have / or % on left and * on right */ + +static bool +div_on_left_mul_on_right(int o1, int o2) +{ + OPCODE op1 = (OPCODE) o1; + OPCODE op2 = (OPCODE) o2; + + switch (op1) { + case Op_quotient: + case Op_quotient_i: + case Op_mod: + case Op_mod_i: + return (op2 == Op_times || op2 == Op_times_i); + + default: + return false; + } +} + /* parenthesize --- parenthesize two nodes relative to parent node type */ static void @@ -1246,9 +1266,11 @@ parenthesize(int type, NODE *left, NODE *right) int lprec = prec_level(left->type); int prec = prec_level(type); - if (lprec < prec) + if (lprec < prec + || (lprec == prec && div_on_left_mul_on_right(left->type, type))) pp_parenthesize(left); - if (rprec < prec) + if (rprec < prec + || (rprec == prec && div_on_left_mul_on_right(type, right->type))) pp_parenthesize(right); } |