break;
}
case BRW_REGISTER_TYPE_Q: {
- int64_t val = !can_do_source_mods ? src->d64 : abs(src->d64);
+ int64_t val = !can_do_source_mods ? src->d64 : llabs(src->d64);
memcpy(out, &val, 8);
break;
}
}
static bool
-needs_negate(const struct fs_reg *reg, const struct imm *imm)
+needs_negate(const fs_reg *reg, const struct imm *imm)
{
switch (reg->type) {
case BRW_REGISTER_TYPE_DF:
};
}
+static bool
+representable_as_hf(float f, uint16_t *hf)
+{
+ union fi u;
+ uint16_t h = _mesa_float_to_half(f);
+ u.f = _mesa_half_to_float(h);
+
+ if (u.f == f) {
+ *hf = h;
+ return true;
+ }
+
+ return false;
+}
+
+static bool
+represent_src_as_imm(const struct gen_device_info *devinfo,
+ fs_reg *src)
+{
+ /* TODO : consider specific platforms also */
+ if (devinfo->gen == 12) {
+ uint16_t hf;
+ if (representable_as_hf(src->f, &hf)) {
+ *src = retype(brw_imm_uw(hf), BRW_REGISTER_TYPE_HF);
+ return true;
+ }
+ }
+ return false;
+}
+
bool
fs_visitor::opt_combine_constants()
{
if (!could_coissue(devinfo, inst) && !must_promote_imm(devinfo, inst))
continue;
+ bool represented_as_imm = false;
for (int i = 0; i < inst->sources; i++) {
if (inst->src[i].file != IMM)
continue;
+ if (!represented_as_imm && i == 0 &&
+ inst->opcode == BRW_OPCODE_MAD &&
+ represent_src_as_imm(devinfo, &inst->src[i])) {
+ represented_as_imm = true;
+ continue;
+ }
+
char data[8];
brw_reg_type type;
if (!get_constant_value(devinfo, inst, i, data, &type))
reg.offset += imm->size * width;
}
- promoted_constants = table.len;
+ shader_stats.promoted_constants = table.len;
/* Rewrite the immediate sources to refer to the new GRFs. */
for (int i = 0; i < table.len; i++) {