Improved MVN support.

[r27799]

ir/be/arm/arm_transform.c

@@ -412,15 +412,13 @@ static ir_node *gen_int_binop(ir_node *node, match_flags_t flags,
 		const arm_shifter_operand_t *attr = get_arm_shifter_operand_attr_const(new_op2);
 
 		switch (attr->shift_modifier) {
-			ir_node *mov_op, *mov_sft;
-
 		case ARM_SHF_IMM:
 		case ARM_SHF_ASR_IMM:
 		case ARM_SHF_LSL_IMM:
 		case ARM_SHF_LSR_IMM:
 		case ARM_SHF_ROR_IMM:
 			if (factory->new_binop_reg_shift_imm) {
-				mov_op = get_irn_n(new_op2, 0);
+				ir_node *mov_op = get_irn_n(new_op2, 0);
 				return factory->new_binop_reg_shift_imm(dbgi, block, new_op1, mov_op,
 					attr->shift_modifier, attr->shift_immediate);
 			}
@@ -431,8 +429,8 @@ static ir_node *gen_int_binop(ir_node *node, match_flags_t flags,
 		case ARM_SHF_LSR_REG:
 		case ARM_SHF_ROR_REG:
 			if (factory->new_binop_reg_shift_reg) {
-				mov_op  = get_irn_n(new_op2, 0);
-				mov_sft = get_irn_n(new_op2, 1);
+				ir_node *mov_op  = get_irn_n(new_op2, 0);
+				ir_node *mov_sft = get_irn_n(new_op2, 1);
 				return factory->new_binop_reg_shift_reg(dbgi, block, new_op1, mov_op, mov_sft,
 					attr->shift_modifier);
 			}
@@ -824,7 +822,32 @@ static ir_node *gen_Not(ir_node *node)
 	ir_node  *new_op  = be_transform_node(op);
 	dbg_info *dbgi    = get_irn_dbg_info(node);
 
-	/* TODO: we could do alot more here with all the Mvn variations */
+	/* check if we can fold in a Mov */
+	if (is_arm_Mov(new_op)) {
+		const arm_shifter_operand_t *attr = get_arm_shifter_operand_attr_const(new_op);
+
+		switch (attr->shift_modifier) {
+			ir_node *mov_op, *mov_sft;
+
+		case ARM_SHF_IMM:
+		case ARM_SHF_ASR_IMM:
+		case ARM_SHF_LSL_IMM:
+		case ARM_SHF_LSR_IMM:
+		case ARM_SHF_ROR_IMM:
+			mov_op = get_irn_n(new_op, 0);
+			return new_bd_arm_Mvn_reg_shift_imm(dbgi, block, mov_op,
+				attr->shift_modifier, attr->shift_immediate);
+
+		case ARM_SHF_ASR_REG:
+		case ARM_SHF_LSL_REG:
+		case ARM_SHF_LSR_REG:
+		case ARM_SHF_ROR_REG:
+			mov_op  = get_irn_n(new_op, 0);
+			mov_sft = get_irn_n(new_op, 1);
+			return new_bd_arm_Mvn_reg_shift_reg(dbgi, block, mov_op, mov_sft,
+				attr->shift_modifier);
+		}
+	}
 
 	return new_bd_arm_Mvn_reg(dbgi, block, new_op);
 }