* USLT(a,b) = (a < b) ? ~0 : 0
* cmps.u32.lt dst, a, b
*
- * UCMP(a,b,c) = (a < 0) ? b : c
- * cmps.u32.lt tmp0, a, {0}
- * sel.b16 dst, b, tmp0, c
*/
static void
trans_icmp(const struct instr_translater *t,
{
struct ir3_instruction *instr;
struct tgsi_dst_register *dst = get_dst(ctx, inst);
- struct tgsi_src_register constval0;
- struct tgsi_src_register *a0, *a1, *a2;
+ struct tgsi_dst_register tmp_dst;
+ struct tgsi_src_register *tmp_src;
+ struct tgsi_src_register *a0, *a1;
unsigned condition;
a0 = &inst->Src[0].Register; /* a */
case TGSI_OPCODE_USLT:
condition = IR3_COND_LT;
break;
- case TGSI_OPCODE_UCMP:
- get_immediate(ctx, &constval0, 0);
- a0 = &inst->Src[0].Register; /* a */
- a1 = &constval0; /* {0} */
- condition = IR3_COND_LT;
- break;
default:
compile_assert(ctx, 0);
if (is_const(a0) && is_const(a1))
a0 = get_unconst(ctx, a0);
- if (t->tgsi_opc == TGSI_OPCODE_UCMP) {
- struct tgsi_dst_register tmp_dst;
- struct tgsi_src_register *tmp_src;
- tmp_src = get_internal_temp(ctx, &tmp_dst);
- /* cmps.u32.lt tmp, a0, a1 */
- instr = instr_create(ctx, 2, t->opc);
- instr->cat2.condition = condition;
- vectorize(ctx, instr, &tmp_dst, 2, a0, 0, a1, 0);
+ tmp_src = get_internal_temp(ctx, &tmp_dst);
+ /* cmps.{u32,s32}.<cond> tmp, a0, a1 */
+ instr = instr_create(ctx, 2, t->opc);
+ instr->cat2.condition = condition;
+ vectorize(ctx, instr, &tmp_dst, 2, a0, 0, a1, 0);
- a1 = &inst->Src[1].Register;
- a2 = &inst->Src[2].Register;
- /* sel.{b32,b16} dst, src2, tmp, src1 */
- instr = instr_create(ctx, 3, OPC_SEL_B32);
- vectorize(ctx, instr, dst, 3, a1, 0, tmp_src, 0, a2, 0);
- } else {
- struct tgsi_dst_register tmp_dst;
- struct tgsi_src_register *tmp_src;
- tmp_src = get_internal_temp(ctx, &tmp_dst);
- /* cmps.{u32,s32}.<cond> tmp, a0, a1 */
- instr = instr_create(ctx, 2, t->opc);
- instr->cat2.condition = condition;
- vectorize(ctx, instr, &tmp_dst, 2, a0, 0, a1, 0);
+ /* absneg.s dst, (neg)tmp */
+ instr = instr_create(ctx, 2, OPC_ABSNEG_S);
+ vectorize(ctx, instr, dst, 1, tmp_src, IR3_REG_NEGATE);
- /* absneg.s dst, (neg)tmp */
- instr = instr_create(ctx, 2, OPC_ABSNEG_S);
- vectorize(ctx, instr, dst, 1, tmp_src, IR3_REG_NEGATE);
- }
put_dst(ctx, inst, dst);
}
/*
+ * UCMP(a,b,c) = a ? b : c
+ * sel.b16 dst, b, a, c
+ */
+static void
+trans_ucmp(const struct instr_translater *t,
+ struct ir3_compile_context *ctx,
+ struct tgsi_full_instruction *inst)
+{
+ struct ir3_instruction *instr;
+ struct tgsi_dst_register *dst = get_dst(ctx, inst);
+ struct tgsi_src_register *a0, *a1, *a2;
+
+ a0 = &inst->Src[0].Register; /* a */
+ a1 = &inst->Src[1].Register; /* b */
+ a2 = &inst->Src[2].Register; /* c */
+
+ if (is_rel_or_const(a0))
+ a0 = get_unconst(ctx, a0);
+
+ /* sel.{b32,b16} dst, b, a, c */
+ instr = instr_create(ctx, 3, OPC_SEL_B32);
+ vectorize(ctx, instr, dst, 3, a1, 0, a0, 0, a2, 0);
+ put_dst(ctx, inst, dst);
+}
+
+
+/*
* Conditional / Flow control
*/
INSTR(USGE, trans_icmp, .opc = OPC_CMPS_U),
INSTR(ISLT, trans_icmp, .opc = OPC_CMPS_S),
INSTR(USLT, trans_icmp, .opc = OPC_CMPS_U),
- INSTR(UCMP, trans_icmp, .opc = OPC_CMPS_U),
+ INSTR(UCMP, trans_ucmp),
INSTR(IF, trans_if, .opc = OPC_CMPS_F),
INSTR(UIF, trans_if, .opc = OPC_CMPS_U),
INSTR(ELSE, trans_else),