* IN THE SOFTWARE.
*/
-#include <stdio.h>
#include <inttypes.h>
#include "vc4_context.h"
#include "vc4_qpu.h"
static void
-vc4_dump_program(struct qcompile *c)
+vc4_dump_program(struct vc4_compile *c)
{
fprintf(stderr, "%s:\n", qir_get_stage_name(c->stage));
};
static void
-queue(struct qcompile *c, uint64_t inst)
+queue(struct vc4_compile *c, uint64_t inst)
{
struct queued_qpu_inst *q = calloc(1, sizeof(*q));
q->inst = inst;
}
static uint64_t *
-last_inst(struct qcompile *c)
+last_inst(struct vc4_compile *c)
{
struct queued_qpu_inst *q =
(struct queued_qpu_inst *)last_elem(&c->qpu_inst_list);
return &q->inst;
}
+static void
+set_last_cond_add(struct vc4_compile *c, uint32_t cond)
+{
+ *last_inst(c) = qpu_set_cond_add(*last_inst(c), cond);
+}
+
/**
* This is used to resolve the fact that we might register-allocate two
* different operands of an instruction to the same physical register file
* instruction, instead.
*/
static void
-fixup_raddr_conflict(struct qcompile *c,
+fixup_raddr_conflict(struct vc4_compile *c,
struct qpu_reg src0, struct qpu_reg *src1)
{
if ((src0.mux == QPU_MUX_A || src0.mux == QPU_MUX_B) &&
(src1->mux == QPU_MUX_A || src1->mux == QPU_MUX_B) &&
src0.addr != src1->addr) {
- queue(c, qpu_inst(qpu_a_MOV(qpu_r3(), *src1),
- qpu_m_NOP()));
+ queue(c, qpu_a_MOV(qpu_r3(), *src1));
*src1 = qpu_r3();
}
}
static void
-serialize_one_inst(struct qcompile *c, uint64_t inst)
+serialize_one_inst(struct vc4_compile *c, uint64_t inst)
{
if (c->qpu_inst_count >= c->qpu_inst_size) {
c->qpu_inst_size = MAX2(16, c->qpu_inst_size * 2);
}
static void
-serialize_insts(struct qcompile *c)
+serialize_insts(struct vc4_compile *c)
{
int last_sfu_write = -10;
+ bool scoreboard_wait_emitted = false;
while (!is_empty_list(&c->qpu_inst_list)) {
struct queued_qpu_inst *q =
}
if (needs_raddr_vs_waddr_nop) {
- serialize_one_inst(c, qpu_inst(qpu_a_NOP(),
- qpu_m_NOP()));
+ serialize_one_inst(c, qpu_NOP());
}
/* "After an SFU lookup instruction, accumulator r4 must not
*/
if (reads_r4) {
while (c->qpu_inst_count - last_sfu_write < 3) {
- serialize_one_inst(c, qpu_inst(qpu_a_NOP(),
- qpu_m_NOP()));
+ serialize_one_inst(c, qpu_NOP());
}
}
last_sfu_write = c->qpu_inst_count;
}
+ /* "A scoreboard wait must not occur in the first two
+ * instructions of a fragment shader. This is either the
+ * explicit Wait for Scoreboard signal or an implicit wait
+ * with the first tile-buffer read or write instruction."
+ */
+ if (!scoreboard_wait_emitted &&
+ (waddr_a == QPU_W_TLB_Z || waddr_m == QPU_W_TLB_Z ||
+ waddr_a == QPU_W_TLB_COLOR_MS ||
+ waddr_m == QPU_W_TLB_COLOR_MS ||
+ waddr_a == QPU_W_TLB_COLOR_ALL ||
+ waddr_m == QPU_W_TLB_COLOR_ALL ||
+ QPU_GET_FIELD(q->inst, QPU_SIG) == QPU_SIG_COLOR_LOAD)) {
+ while (c->qpu_inst_count < 3 ||
+ QPU_GET_FIELD(c->qpu_insts[c->qpu_inst_count - 1],
+ QPU_SIG) != QPU_SIG_NONE) {
+ serialize_one_inst(c, qpu_NOP());
+ }
+ c->qpu_insts[c->qpu_inst_count - 1] =
+ qpu_set_sig(c->qpu_insts[c->qpu_inst_count - 1],
+ QPU_SIG_WAIT_FOR_SCOREBOARD);
+ scoreboard_wait_emitted = true;
+ }
+
serialize_one_inst(c, q->inst);
remove_from_list(&q->link);
}
void
-vc4_generate_code(struct qcompile *c)
+vc4_generate_code(struct vc4_context *vc4, struct vc4_compile *c)
{
- struct qpu_reg allocate_to_qpu_reg[3 + 32 + 32];
- bool reg_in_use[ARRAY_SIZE(allocate_to_qpu_reg)];
- int *reg_allocated = calloc(c->num_temps, sizeof(*reg_allocated));
- int *reg_uses_remaining =
- calloc(c->num_temps, sizeof(*reg_uses_remaining));
-
- for (int i = 0; i < ARRAY_SIZE(reg_in_use); i++)
- reg_in_use[i] = false;
- for (int i = 0; i < c->num_temps; i++)
- reg_allocated[i] = -1;
- for (int i = 0; i < 3; i++)
- allocate_to_qpu_reg[i] = qpu_rn(i);
- for (int i = 0; i < 32; i++)
- allocate_to_qpu_reg[i + 3] = qpu_ra(i);
- for (int i = 0; i < 32; i++)
- allocate_to_qpu_reg[i + 3 + 32] = qpu_rb(i);
+ struct qpu_reg *temp_registers = vc4_register_allocate(vc4, c);
+ bool discard = false;
make_empty_list(&c->qpu_inst_list);
- struct simple_node *node;
- foreach(node, &c->instructions) {
- struct qinst *qinst = (struct qinst *)node;
-
- if (qinst->dst.file == QFILE_TEMP)
- reg_uses_remaining[qinst->dst.index]++;
- for (int i = 0; i < qir_get_op_nsrc(qinst->op); i++) {
- if (qinst->src[i].file == QFILE_TEMP)
- reg_uses_remaining[qinst->src[i].index]++;
- }
- }
-
switch (c->stage) {
case QSTAGE_VERT:
case QSTAGE_COORD:
break;
}
+ struct simple_node *node;
foreach(node, &c->instructions) {
struct qinst *qinst = (struct qinst *)node;
A(FMAXABS),
A(FTOI),
A(ITOF),
+ A(ADD),
+ A(SUB),
+ A(SHL),
+ A(SHR),
+ A(ASR),
+ A(MIN),
+ A(MAX),
+ A(AND),
+ A(OR),
+ A(XOR),
+ A(NOT),
M(FMUL),
- };
-
- static const uint32_t compareflags[] = {
- [QOP_SEQ - QOP_SEQ] = QPU_COND_ZS,
- [QOP_SNE - QOP_SEQ] = QPU_COND_ZC,
- [QOP_SLT - QOP_SEQ] = QPU_COND_NS,
- [QOP_SGE - QOP_SEQ] = QPU_COND_NC,
+ M(MUL24),
};
struct qpu_reg src[4];
src[i] = qpu_rn(0);
break;
case QFILE_TEMP:
- if (reg_allocated[index] == -1) {
- fprintf(stderr, "undefined reg use: ");
- qir_dump_inst(qinst);
- fprintf(stderr, "\n");
-
- src[i] = qpu_rn(0);
- } else {
- src[i] = allocate_to_qpu_reg[reg_allocated[index]];
- reg_uses_remaining[index]--;
- if (reg_uses_remaining[index] == 0)
- reg_in_use[reg_allocated[index]] = false;
- }
+ src[i] = temp_registers[index];
break;
case QFILE_UNIF:
src[i] = qpu_unif();
case QFILE_NULL:
dst = qpu_ra(QPU_W_NOP);
break;
-
case QFILE_TEMP:
- if (reg_allocated[qinst->dst.index] == -1) {
- int alloc;
- for (alloc = 0;
- alloc < ARRAY_SIZE(reg_in_use);
- alloc++) {
- /* The pack flags require an A-file register. */
- if (qinst->op == QOP_PACK_SCALED &&
- allocate_to_qpu_reg[alloc].mux != QPU_MUX_A) {
- continue;
- }
-
- if (!reg_in_use[alloc])
- break;
- }
- assert(alloc != ARRAY_SIZE(reg_in_use) && "need better reg alloc");
- reg_in_use[alloc] = true;
- reg_allocated[qinst->dst.index] = alloc;
- }
-
- dst = allocate_to_qpu_reg[reg_allocated[qinst->dst.index]];
-
- reg_uses_remaining[qinst->dst.index]--;
- if (reg_uses_remaining[qinst->dst.index] == 0) {
- reg_in_use[reg_allocated[qinst->dst.index]] =
- false;
- }
+ dst = temp_registers[qinst->dst.index];
break;
-
case QFILE_VARY:
case QFILE_UNIF:
assert(!"not reached");
/* Skip emitting the MOV if it's a no-op. */
if (dst.mux == QPU_MUX_A || dst.mux == QPU_MUX_B ||
dst.mux != src[0].mux || dst.addr != src[0].addr) {
- queue(c, qpu_inst(qpu_a_MOV(dst, src[0]),
- qpu_m_NOP()));
+ queue(c, qpu_a_MOV(dst, src[0]));
}
break;
- case QOP_CMP:
- queue(c, qpu_inst(qpu_a_MOV(qpu_ra(QPU_W_NOP),
- src[0]),
- qpu_m_NOP()));
+ case QOP_SF:
+ queue(c, qpu_a_MOV(qpu_ra(QPU_W_NOP), src[0]));
*last_inst(c) |= QPU_SF;
+ break;
- if (dst.mux <= QPU_MUX_R3) {
- fixup_raddr_conflict(c, src[1], &src[2]);
- queue(c, qpu_inst(qpu_a_MOV(dst, src[1]),
- qpu_m_MOV(dst, src[2])));
- *last_inst(c) = ((*last_inst(c) & ~(QPU_COND_ADD_MASK |
- QPU_COND_MUL_MASK))
- | QPU_SET_FIELD(QPU_COND_NS,
- QPU_COND_ADD)
- | QPU_SET_FIELD(QPU_COND_NC,
- QPU_COND_MUL));
- } else {
- if (dst.mux == src[1].mux &&
- dst.addr == src[1].addr) {
- queue(c, qpu_inst(qpu_a_MOV(dst, src[1]),
- qpu_m_NOP()));
-
- queue(c, qpu_inst(qpu_a_MOV(dst, src[2]),
- qpu_m_NOP()));
- *last_inst(c) = ((*last_inst(c) & ~(QPU_COND_ADD_MASK))
- | QPU_SET_FIELD(QPU_COND_NC,
- QPU_COND_ADD));
- } else {
- queue(c, qpu_inst(qpu_a_MOV(dst, src[2]),
- qpu_m_NOP()));
-
- queue(c, qpu_inst(qpu_a_MOV(dst, src[1]),
- qpu_m_NOP()));
- *last_inst(c) = ((*last_inst(c) & ~(QPU_COND_ADD_MASK))
- | QPU_SET_FIELD(QPU_COND_NS,
- QPU_COND_ADD));
- }
- }
+ case QOP_SEL_X_0_ZS:
+ case QOP_SEL_X_0_ZC:
+ case QOP_SEL_X_0_NS:
+ case QOP_SEL_X_0_NC:
+ queue(c, qpu_a_MOV(dst, src[0]));
+ set_last_cond_add(c, qinst->op - QOP_SEL_X_0_ZS +
+ QPU_COND_ZS);
+
+ queue(c, qpu_a_XOR(dst, qpu_r0(), qpu_r0()));
+ set_last_cond_add(c, ((qinst->op - QOP_SEL_X_0_ZS) ^
+ 1) + QPU_COND_ZS);
break;
- case QOP_SEQ:
- case QOP_SNE:
- case QOP_SGE:
- case QOP_SLT:
- fixup_raddr_conflict(c, src[0], &src[1]);
- queue(c, qpu_inst(qpu_a_SUB(qpu_ra(QPU_W_NOP),
- src[0], src[1]),
- qpu_m_NOP()));
- *last_inst(c) |= QPU_SF;
+ case QOP_SEL_X_Y_ZS:
+ case QOP_SEL_X_Y_ZC:
+ case QOP_SEL_X_Y_NS:
+ case QOP_SEL_X_Y_NC:
+ queue(c, qpu_a_MOV(dst, src[0]));
+ set_last_cond_add(c, qinst->op - QOP_SEL_X_Y_ZS +
+ QPU_COND_ZS);
- queue(c, qpu_load_imm_f(dst, 0.0));
- queue(c, qpu_load_imm_f(dst, 1.0));
- *last_inst(c) = ((*last_inst(c) & ~QPU_COND_ADD_MASK)
- | QPU_SET_FIELD(compareflags[qinst->op - QOP_SEQ],
- QPU_COND_ADD));
+ queue(c, qpu_a_MOV(dst, src[1]));
+ set_last_cond_add(c, ((qinst->op - QOP_SEL_X_Y_ZS) ^
+ 1) + QPU_COND_ZS);
break;
case QOP_VPM_WRITE:
- queue(c, qpu_inst(qpu_a_MOV(qpu_ra(QPU_W_VPM), src[0]),
- qpu_m_NOP()));
+ queue(c, qpu_a_MOV(qpu_ra(QPU_W_VPM), src[0]));
break;
case QOP_VPM_READ:
- queue(c, qpu_inst(qpu_a_MOV(dst, qpu_ra(QPU_R_VPM)),
- qpu_m_NOP()));
+ queue(c, qpu_a_MOV(dst, qpu_ra(QPU_R_VPM)));
break;
case QOP_RCP:
case QOP_LOG2:
switch (qinst->op) {
case QOP_RCP:
- queue(c, qpu_inst(qpu_a_MOV(qpu_rb(QPU_W_SFU_RECIP),
- src[0]),
- qpu_m_NOP()));
+ queue(c, qpu_a_MOV(qpu_rb(QPU_W_SFU_RECIP),
+ src[0]));
break;
case QOP_RSQ:
- queue(c, qpu_inst(qpu_a_MOV(qpu_rb(QPU_W_SFU_RECIPSQRT),
- src[0]),
- qpu_m_NOP()));
+ queue(c, qpu_a_MOV(qpu_rb(QPU_W_SFU_RECIPSQRT),
+ src[0]));
break;
case QOP_EXP2:
- queue(c, qpu_inst(qpu_a_MOV(qpu_rb(QPU_W_SFU_EXP),
- src[0]),
- qpu_m_NOP()));
+ queue(c, qpu_a_MOV(qpu_rb(QPU_W_SFU_EXP),
+ src[0]));
break;
case QOP_LOG2:
- queue(c, qpu_inst(qpu_a_MOV(qpu_rb(QPU_W_SFU_LOG),
- src[0]),
- qpu_m_NOP()));
+ queue(c, qpu_a_MOV(qpu_rb(QPU_W_SFU_LOG),
+ src[0]));
break;
default:
abort();
}
- queue(c, qpu_inst(qpu_a_MOV(dst, qpu_r4()),
- qpu_m_NOP()));
+ queue(c, qpu_a_MOV(dst, qpu_r4()));
break;
case QOP_PACK_COLORS:
for (int i = 0; i < 4; i++) {
- queue(c, qpu_inst(qpu_a_NOP(),
- qpu_m_MOV(qpu_r3(), src[i])));
+ queue(c, qpu_m_MOV(qpu_r3(), src[i]));
*last_inst(c) |= QPU_PM;
*last_inst(c) |= QPU_SET_FIELD(QPU_PACK_MUL_8A + i,
QPU_PACK);
}
- queue(c, qpu_inst(qpu_a_MOV(dst, qpu_r3()),
- qpu_m_NOP()));
+ queue(c, qpu_a_MOV(dst, qpu_r3()));
+
+ break;
+
+ case QOP_FRAG_X:
+ queue(c, qpu_a_ITOF(dst,
+ qpu_ra(QPU_R_XY_PIXEL_COORD)));
+ break;
+
+ case QOP_FRAG_Y:
+ queue(c, qpu_a_ITOF(dst,
+ qpu_rb(QPU_R_XY_PIXEL_COORD)));
+ break;
+
+ case QOP_FRAG_Z:
+ case QOP_FRAG_W:
+ /* QOP_FRAG_Z/W don't emit instructions, just allocate
+ * the register to the Z/W payload.
+ */
+ break;
+
+ case QOP_TLB_DISCARD_SETUP:
+ discard = true;
+ queue(c, qpu_a_MOV(src[0], src[0]));
+ *last_inst(c) |= QPU_SF;
+ break;
+
+ case QOP_TLB_STENCIL_SETUP:
+ queue(c, qpu_a_MOV(qpu_ra(QPU_W_TLB_STENCIL_SETUP), src[0]));
+ break;
+
+ case QOP_TLB_Z_WRITE:
+ queue(c, qpu_a_MOV(qpu_ra(QPU_W_TLB_Z), src[0]));
+ if (discard) {
+ set_last_cond_add(c, QPU_COND_ZS);
+ }
+ break;
+
+ case QOP_TLB_COLOR_READ:
+ queue(c, qpu_NOP());
+ *last_inst(c) = qpu_set_sig(*last_inst(c),
+ QPU_SIG_COLOR_LOAD);
break;
case QOP_TLB_COLOR_WRITE:
- queue(c, qpu_inst(qpu_a_MOV(qpu_tlbc(),
- src[0]),
- qpu_m_NOP()));
+ queue(c, qpu_a_MOV(qpu_tlbc(), src[0]));
+ if (discard) {
+ set_last_cond_add(c, QPU_COND_ZS);
+ }
break;
case QOP_VARY_ADD_C:
- queue(c, qpu_inst(qpu_a_FADD(dst,
- src[0], qpu_r5()),
- qpu_m_NOP()));
+ queue(c, qpu_a_FADD(dst, src[0], qpu_r5()));
break;
case QOP_PACK_SCALED: {
- uint64_t a = (qpu_inst(qpu_a_MOV(dst, src[0]),
- qpu_m_NOP()) |
+ uint64_t a = (qpu_a_MOV(dst, src[0]) |
QPU_SET_FIELD(QPU_PACK_A_16A,
QPU_PACK));
- uint64_t b = (qpu_inst(qpu_a_MOV(dst, src[1]),
- qpu_m_NOP()) |
+ uint64_t b = (qpu_a_MOV(dst, src[1]) |
QPU_SET_FIELD(QPU_PACK_A_16B,
QPU_PACK));
case QOP_TEX_T:
case QOP_TEX_R:
case QOP_TEX_B:
- queue(c, qpu_inst(qpu_a_MOV(qpu_rb(QPU_W_TMU0_S +
- (qinst->op -
- QOP_TEX_S)),
- src[0]),
- qpu_m_NOP()));
+ queue(c, qpu_a_MOV(qpu_rb(QPU_W_TMU0_S +
+ (qinst->op - QOP_TEX_S)),
+ src[0]));
break;
case QOP_TEX_RESULT:
- queue(c, qpu_inst(qpu_a_NOP(), qpu_m_NOP()));
+ queue(c, qpu_NOP());
*last_inst(c) = qpu_set_sig(*last_inst(c),
QPU_SIG_LOAD_TMU0);
case QOP_R4_UNPACK_B:
case QOP_R4_UNPACK_C:
case QOP_R4_UNPACK_D:
- queue(c, qpu_inst(qpu_a_MOV(dst, qpu_r4()),
- qpu_m_NOP()));
+ assert(src[0].mux == QPU_MUX_R4);
+ queue(c, qpu_a_MOV(dst, src[0]));
*last_inst(c) |= QPU_PM;
- *last_inst(c) |= QPU_SET_FIELD(QPU_UNPACK_R4_8A +
+ *last_inst(c) |= QPU_SET_FIELD(QPU_UNPACK_8A +
(qinst->op -
QOP_R4_UNPACK_A),
QPU_UNPACK);
break;
+ case QOP_UNPACK_8A:
+ case QOP_UNPACK_8B:
+ case QOP_UNPACK_8C:
+ case QOP_UNPACK_8D: {
+ assert(src[0].mux == QPU_MUX_A);
+
+ /* And, since we're setting the pack bits, if the
+ * destination is in A it would get re-packed.
+ */
+ struct qpu_reg orig_dst = dst;
+ if (orig_dst.mux == QPU_MUX_A)
+ dst = qpu_rn(3);
+
+ queue(c, qpu_a_FMAX(dst, src[0], src[0]));
+ *last_inst(c) |= QPU_SET_FIELD(QPU_UNPACK_8A +
+ (qinst->op -
+ QOP_UNPACK_8A),
+ QPU_UNPACK);
+
+ if (orig_dst.mux == QPU_MUX_A) {
+ queue(c, qpu_a_MOV(orig_dst, dst));
+ }
+ }
+ break;
+
default:
assert(qinst->op < ARRAY_SIZE(translate));
assert(translate[qinst->op].op != 0); /* NOPs */
fixup_raddr_conflict(c, src[0], &src[1]);
if (translate[qinst->op].is_mul) {
- queue(c, qpu_inst(qpu_a_NOP(),
- qpu_m_alu2(translate[qinst->op].op,
- dst,
- src[0], src[1])));
+ queue(c, qpu_m_alu2(translate[qinst->op].op,
+ dst,
+ src[0], src[1]));
} else {
- queue(c, qpu_inst(qpu_a_alu2(translate[qinst->op].op,
- dst,
- src[0], src[1]),
- qpu_m_NOP()));
+ queue(c, qpu_a_alu2(translate[qinst->op].op,
+ dst,
+ src[0], src[1]));
}
break;
}
QPU_WADDR_ADD) == QPU_W_VPM ||
QPU_GET_FIELD(c->qpu_insts[c->qpu_inst_count - 1],
QPU_WADDR_MUL) == QPU_W_VPM) {
- serialize_one_inst(c, qpu_inst(qpu_a_NOP(), qpu_m_NOP()));
+ serialize_one_inst(c, qpu_NOP());
+ }
+
+ /* thread end can't have uniform read */
+ if (QPU_GET_FIELD(c->qpu_insts[c->qpu_inst_count - 1],
+ QPU_RADDR_A) == QPU_R_UNIF ||
+ QPU_GET_FIELD(c->qpu_insts[c->qpu_inst_count - 1],
+ QPU_RADDR_B) == QPU_R_UNIF) {
+ serialize_one_inst(c, qpu_NOP());
}
c->qpu_insts[c->qpu_inst_count - 1] =
qpu_set_sig(c->qpu_insts[c->qpu_inst_count - 1],
QPU_SIG_PROG_END);
- serialize_one_inst(c, qpu_inst(qpu_a_NOP(), qpu_m_NOP()));
- serialize_one_inst(c, qpu_inst(qpu_a_NOP(), qpu_m_NOP()));
+ serialize_one_inst(c, qpu_NOP());
+ serialize_one_inst(c, qpu_NOP());
switch (c->stage) {
case QSTAGE_VERT:
case QSTAGE_COORD:
break;
case QSTAGE_FRAG:
- c->qpu_insts[2] = qpu_set_sig(c->qpu_insts[2],
- QPU_SIG_WAIT_FOR_SCOREBOARD);
c->qpu_insts[c->qpu_inst_count - 1] =
qpu_set_sig(c->qpu_insts[c->qpu_inst_count - 1],
QPU_SIG_SCOREBOARD_UNLOCK);
vc4_dump_program(c);
vc4_qpu_validate(c->qpu_insts, c->qpu_inst_count);
+
+ free(temp_registers);
}
projects / mesa.git / blobdiff