if (!src || src->file != GRF)
return false;
- return (src->reg == inst->dst.reg &&
- src->reg_offset == inst->dst.reg_offset &&
- inst->dst.writemask & (1 << BRW_GET_SWZ(src->swizzle, ch)));
+ return (src->in_range(inst->dst, inst->regs_written) &&
+ inst->dst.writemask & (1 << BRW_GET_SWZ(src->swizzle, ch)));
}
static unsigned
}
static bool
-try_constant_propagate(struct brw_context *brw, vec4_instruction *inst,
+is_logic_op(enum opcode opcode)
+{
+ return (opcode == BRW_OPCODE_AND ||
+ opcode == BRW_OPCODE_OR ||
+ opcode == BRW_OPCODE_XOR ||
+ opcode == BRW_OPCODE_NOT);
+}
+
+static bool
+try_constant_propagate(const struct brw_device_info *devinfo,
+ vec4_instruction *inst,
int arg, struct copy_entry *entry)
{
/* For constant propagation, we only handle the same constant
if (value.file != IMM)
return false;
+ if (value.type == BRW_REGISTER_TYPE_VF) {
+ /* The result of bit-casting the component values of a vector float
+ * cannot in general be represented as an immediate.
+ */
+ if (inst->src[arg].type != BRW_REGISTER_TYPE_F)
+ return false;
+ } else {
+ value.type = inst->src[arg].type;
+ }
+
if (inst->src[arg].abs) {
- if (value.type == BRW_REGISTER_TYPE_F) {
- value.fixed_hw_reg.dw1.f = fabs(value.fixed_hw_reg.dw1.f);
- } else if (value.type == BRW_REGISTER_TYPE_VF) {
- value.fixed_hw_reg.dw1.ud &= ~0x80808080;
- } else if (value.type == BRW_REGISTER_TYPE_D) {
- if (value.fixed_hw_reg.dw1.d < 0)
- value.fixed_hw_reg.dw1.d = -value.fixed_hw_reg.dw1.d;
+ if ((devinfo->gen >= 8 && is_logic_op(inst->opcode)) ||
+ !brw_abs_immediate(value.type, &value.fixed_hw_reg)) {
+ return false;
}
}
if (inst->src[arg].negate) {
- if (value.type == BRW_REGISTER_TYPE_F)
- value.fixed_hw_reg.dw1.f = -value.fixed_hw_reg.dw1.f;
- else if (value.type == BRW_REGISTER_TYPE_VF)
- value.fixed_hw_reg.dw1.ud ^= 0x80808080;
- else
- value.fixed_hw_reg.dw1.ud = -value.fixed_hw_reg.dw1.ud;
+ if ((devinfo->gen >= 8 && is_logic_op(inst->opcode)) ||
+ !brw_negate_immediate(value.type, &value.fixed_hw_reg)) {
+ return false;
+ }
}
if (value.type == BRW_REGISTER_TYPE_VF)
switch (inst->opcode) {
case BRW_OPCODE_MOV:
+ case SHADER_OPCODE_BROADCAST:
inst->src[arg] = value;
return true;
case SHADER_OPCODE_POW:
case SHADER_OPCODE_INT_QUOTIENT:
case SHADER_OPCODE_INT_REMAINDER:
- if (brw->gen < 8)
+ if (devinfo->gen < 8)
break;
/* fallthrough */
case BRW_OPCODE_DP2:
case BRW_OPCODE_MACH:
case BRW_OPCODE_MUL:
+ case SHADER_OPCODE_MULH:
case BRW_OPCODE_ADD:
case BRW_OPCODE_OR:
case BRW_OPCODE_AND:
return true;
}
break;
+ case GS_OPCODE_SET_WRITE_OFFSET:
+ /* This is just a multiply by a constant with special strides.
+ * The generator will handle immediates in both arguments (generating
+ * a single MOV of the product). So feel free to propagate in src0.
+ */
+ inst->src[arg] = value;
+ return true;
case BRW_OPCODE_CMP:
if (arg == 1) {
}
static bool
-is_logic_op(enum opcode opcode)
+can_change_source_types(vec4_instruction *inst)
{
- return (opcode == BRW_OPCODE_AND ||
- opcode == BRW_OPCODE_OR ||
- opcode == BRW_OPCODE_XOR ||
- opcode == BRW_OPCODE_NOT);
+ return inst->dst.type == inst->src[0].type &&
+ !inst->src[0].abs && !inst->src[0].negate && !inst->saturate &&
+ (inst->opcode == BRW_OPCODE_MOV ||
+ (inst->opcode == BRW_OPCODE_SEL &&
+ inst->dst.type == inst->src[1].type &&
+ inst->predicate != BRW_PREDICATE_NONE &&
+ !inst->src[1].abs && !inst->src[1].negate));
}
static bool
-try_copy_propagate(struct brw_context *brw, vec4_instruction *inst,
- int arg, struct copy_entry *entry, int reg)
+try_copy_propagate(const struct brw_device_info *devinfo,
+ vec4_instruction *inst,
+ int arg, struct copy_entry *entry)
{
+ /* Build up the value we are propagating as if it were the source of a
+ * single MOV
+ */
/* For constant propagation, we only handle the same constant
* across all 4 channels. Some day, we should handle the 8-bit
* float vector format, which would let us constant propagate
*/
int s[4];
for (int i = 0; i < 4; i++) {
- s[i] = BRW_GET_SWZ(entry->value[i]->swizzle,
- BRW_GET_SWZ(inst->src[arg].swizzle, i));
+ s[i] = BRW_GET_SWZ(entry->value[i]->swizzle, i);
}
value.swizzle = BRW_SWIZZLE4(s[0], s[1], s[2], s[3]);
+ /* Check that we can propagate that value */
if (value.file != UNIFORM &&
value.file != GRF &&
value.file != ATTR)
return false;
- if (brw->gen >= 8 && (value.negate || value.abs) &&
+ if (devinfo->gen >= 8 && (value.negate || value.abs) &&
is_logic_op(inst->opcode)) {
return false;
}
- if (inst->src[arg].abs) {
- value.negate = false;
- value.abs = true;
- }
- if (inst->src[arg].negate)
- value.negate = !value.negate;
-
bool has_source_modifiers = value.negate || value.abs;
/* gen6 math and gen7+ SENDs from GRFs ignore source modifiers on
* instructions.
*/
if ((has_source_modifiers || value.file == UNIFORM ||
- value.swizzle != BRW_SWIZZLE_XYZW) && !inst->can_do_source_mods(brw))
+ value.swizzle != BRW_SWIZZLE_XYZW) && !inst->can_do_source_mods(devinfo))
return false;
- if (has_source_modifiers && value.type != inst->src[arg].type)
+ if (has_source_modifiers &&
+ value.type != inst->src[arg].type &&
+ !can_change_source_types(inst))
return false;
if (has_source_modifiers &&
inst->opcode == SHADER_OPCODE_GEN4_SCRATCH_WRITE)
return false;
- if (inst->is_3src() && value.file == UNIFORM)
+ unsigned composed_swizzle = brw_compose_swizzle(inst->src[arg].swizzle,
+ value.swizzle);
+ if (inst->is_3src() &&
+ value.file == UNIFORM &&
+ !brw_is_single_value_swizzle(composed_swizzle))
return false;
if (inst->is_send_from_grf())
if (value.equals(inst->src[arg]))
return false;
- /* Limit saturate propagation only to SEL with src1 bounded within 1.0 and 1.0
- * otherwise, skip copy propagate altogether
- */
- if (entry->saturatemask & (1 << arg)) {
+ const unsigned dst_saturate_mask = inst->dst.writemask &
+ brw_apply_swizzle_to_mask(inst->src[arg].swizzle, entry->saturatemask);
+
+ if (dst_saturate_mask) {
+ /* We either saturate all or nothing. */
+ if (dst_saturate_mask != inst->dst.writemask)
+ return false;
+
+ /* Limit saturate propagation only to SEL with src1 bounded within 0.0
+ * and 1.0, otherwise skip copy propagate altogether.
+ */
switch(inst->opcode) {
case BRW_OPCODE_SEL:
- if (inst->src[1].file != IMM ||
+ if (arg != 0 ||
+ inst->src[0].type != BRW_REGISTER_TYPE_F ||
+ inst->src[1].file != IMM ||
+ inst->src[1].type != BRW_REGISTER_TYPE_F ||
inst->src[1].fixed_hw_reg.dw1.f < 0.0 ||
inst->src[1].fixed_hw_reg.dw1.f > 1.0) {
return false;
}
}
- value.type = inst->src[arg].type;
+ /* Build the final value */
+ if (inst->src[arg].abs) {
+ value.negate = false;
+ value.abs = true;
+ }
+ if (inst->src[arg].negate)
+ value.negate = !value.negate;
+
+ value.swizzle = composed_swizzle;
+ if (has_source_modifiers &&
+ value.type != inst->src[arg].type) {
+ assert(can_change_source_types(inst));
+ for (int i = 0; i < 3; i++) {
+ inst->src[i].type = value.type;
+ }
+ inst->dst.type = value.type;
+ } else {
+ value.type = inst->src[arg].type;
+ }
+
inst->src[arg] = value;
return true;
}
vec4_visitor::opt_copy_propagation(bool do_constant_prop)
{
bool progress = false;
- struct copy_entry entries[virtual_grf_reg_count];
+ struct copy_entry entries[alloc.total_size];
memset(&entries, 0, sizeof(entries));
inst->src[i].reladdr)
continue;
- int reg = (virtual_grf_reg_map[inst->src[i].reg] +
+ /* We only handle single-register copies. */
+ if (inst->regs_read(i) != 1)
+ continue;
+
+ int reg = (alloc.offsets[inst->src[i].reg] +
inst->src[i].reg_offset);
/* Find the regs that each swizzle component came from.
if (c != 4)
continue;
- if (do_constant_prop && try_constant_propagate(brw, inst, i, &entry))
+ if (do_constant_prop && try_constant_propagate(devinfo, inst, i, &entry))
progress = true;
- if (try_copy_propagate(brw, inst, i, &entry, reg))
+ if (try_copy_propagate(devinfo, inst, i, &entry))
progress = true;
}
/* Track available source registers. */
if (inst->dst.file == GRF) {
const int reg =
- virtual_grf_reg_map[inst->dst.reg] + inst->dst.reg_offset;
+ alloc.offsets[inst->dst.reg] + inst->dst.reg_offset;
/* Update our destination's current channel values. For a direct copy,
* the value is the newly propagated source. Otherwise, we don't know
* the new value, so clear it.
*/
bool direct_copy = is_direct_copy(inst);
- entries[reg].saturatemask = 0x0;
+ entries[reg].saturatemask &= ~inst->dst.writemask;
for (int i = 0; i < 4; i++) {
if (inst->dst.writemask & (1 << i)) {
entries[reg].value[i] = direct_copy ? &inst->src[0] : NULL;
- entries[reg].saturatemask |= (((inst->saturate && direct_copy) ? 1 : 0) << i);
- }
+ entries[reg].saturatemask |=
+ inst->saturate && direct_copy ? 1 << i : 0;
+ }
}
/* Clear the records for any registers whose current value came from
if (inst->dst.reladdr)
memset(&entries, 0, sizeof(entries));
else {
- for (int i = 0; i < virtual_grf_reg_count; i++) {
+ for (unsigned i = 0; i < alloc.total_size; i++) {
for (int j = 0; j < 4; j++) {
- if (is_channel_updated(inst, entries[i].value, j)){
+ if (is_channel_updated(inst, entries[i].value, j)) {
entries[i].value[j] = NULL;
entries[i].saturatemask &= ~(1 << j);
}
projects / mesa.git / blobdiff