- emit(BRW_OPCODE_MOV, fs_reg(MRF, base_mrf + 1), src1);
- inst = emit(opcode, dst, src0, reg_null_f);
+ /* From the Ironlake PRM, Volume 4, Part 1, Section 6.1.13
+ * "Message Payload":
+ *
+ * "Operand0[7]. For the INT DIV functions, this operand is the
+ * denominator."
+ * ...
+ * "Operand1[7]. For the INT DIV functions, this operand is the
+ * numerator."
+ */
+ bool is_int_div = opcode != SHADER_OPCODE_POW;
+ fs_reg &op0 = is_int_div ? src1 : src0;
+ fs_reg &op1 = is_int_div ? src0 : src1;
+
+ emit(BRW_OPCODE_MOV, fs_reg(MRF, base_mrf + 1, op1.type), op1);
+ inst = emit(opcode, dst, op0, reg_null_f);