From: Dave Airlie <airl...@redhat.com>
Reads from the queue shouldn't be merged for now read operations.
Reads from the queue shouldn't be merged for now, or put in
T slots.
Signed-off-by: Dave Airlie <airl...@redhat.com>
---
src/gallium/drivers/r600/r600_asm.c | 22 +++++++++++++++++++++-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/src/gallium/drivers/r600/r600_asm.c
b/src/gallium/drivers/r600/r600_asm.c
index 89a34c4..88e35bc 100644
--- a/src/gallium/drivers/r600/r600_asm.c
+++ b/src/gallium/drivers/r600/r600_asm.c
@@ -268,6 +268,24 @@ static int alu_uses_rel(struct r600_bytecode *bc, struct
r600_bytecode_alu *alu)
return 0;
}
+static int is_lds_read(int sel)
+{
+ return sel == EG_V_SQ_ALU_SRC_LDS_OQ_A_POP || sel ==
EG_V_SQ_ALU_SRC_LDS_OQ_B_POP;
+}
+
+static int alu_uses_lds(struct r600_bytecode *bc, struct r600_bytecode_alu
*alu)
+{
+ unsigned num_src = r600_bytecode_get_num_operands(bc, alu);
+ unsigned src;
+
+ for (src = 0; src < num_src; ++src) {
+ if (is_lds_read(alu->src[src].sel)) {
+ return 1;
+ }
+ }
+ return 0;
+}
+
static int is_alu_64bit_inst(struct r600_bytecode *bc, struct
r600_bytecode_alu *alu)
{
const struct alu_op_info *op = r600_isa_alu(alu->op);
@@ -787,6 +805,8 @@ static int merge_inst_groups(struct r600_bytecode *bc,
struct r600_bytecode_alu
}
have_rel = 1;
}
+ if (alu_uses_lds(bc, prev[i]))
+ return 0;
num_once_inst += is_alu_once_inst(bc, prev[i]);
}
@@ -800,7 +820,7 @@ static int merge_inst_groups(struct r600_bytecode *bc,
struct r600_bytecode_alu
} else if (prev[i] && slots[i]) {
if (max_slots == 5 && result[4] == NULL && prev[4] ==
NULL && slots[4] == NULL) {
/* Trans unit is still free try to use it. */
- if (is_alu_any_unit_inst(bc, slots[i])) {
+ if (is_alu_any_unit_inst(bc, slots[i]) &&
!alu_uses_lds(bc, slots[i])) {
result[i] = prev[i];
result[4] = slots[i];
} else if (is_alu_any_unit_inst(bc, prev[i])) {
--
2.5.0
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