diff options
Diffstat (limited to 'gcc/optabs.c')
| -rw-r--r-- | gcc/optabs.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/gcc/optabs.c b/gcc/optabs.c index cc0297f6fc3..f6309f6afe1 100644 --- a/gcc/optabs.c +++ b/gcc/optabs.c @@ -1,5 +1,5 @@ /* Expand the basic unary and binary arithmetic operations, for GNU compiler. - Copyright (C) 1987, 1988, 1992, 1993, 1994 Free Software Foundation, Inc. + Copyright (C) 1987, 88, 92, 93, 94, 1995 Free Software Foundation, Inc. This file is part of GNU CC. @@ -380,8 +380,8 @@ expand_binop (mode, binoptab, op0, op1, target, unsignedp, methods) op0 = force_reg (mode, op0); if (CONSTANT_P (op1) && preserve_subexpressions_p () - && rtx_cost (op1, binoptab->code) > 2) - op1 = force_reg (shift_op ? word_mode : mode, op1); + && ! shift_op && rtx_cost (op1, binoptab->code) > 2) + op1 = force_reg (mode, op1); /* Record where to delete back to if we backtrack. */ last = get_last_insn (); @@ -445,20 +445,24 @@ expand_binop (mode, binoptab, op0, op1, target, unsignedp, methods) the result, convert the operands. */ if (GET_MODE (op0) != VOIDmode - && GET_MODE (op0) != mode0) + && GET_MODE (op0) != mode0 + && mode0 != VOIDmode) xop0 = convert_to_mode (mode0, xop0, unsignedp); if (GET_MODE (xop1) != VOIDmode - && GET_MODE (xop1) != mode1) + && GET_MODE (xop1) != mode1 + && mode1 != VOIDmode) xop1 = convert_to_mode (mode1, xop1, unsignedp); /* Now, if insn's predicates don't allow our operands, put them into pseudo regs. */ - if (! (*insn_operand_predicate[icode][1]) (xop0, mode0)) + if (! (*insn_operand_predicate[icode][1]) (xop0, mode0) + && mode0 != VOIDmode) xop0 = copy_to_mode_reg (mode0, xop0); - if (! (*insn_operand_predicate[icode][2]) (xop1, mode1)) + if (! (*insn_operand_predicate[icode][2]) (xop1, mode1) + && mode1 != VOIDmode) xop1 = copy_to_mode_reg (mode1, xop1); if (! (*insn_operand_predicate[icode][0]) (temp, mode)) |