diff options
Diffstat (limited to 'mesalib/src/mesa/program/ir_to_mesa.cpp')
| -rw-r--r-- | mesalib/src/mesa/program/ir_to_mesa.cpp | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/mesalib/src/mesa/program/ir_to_mesa.cpp b/mesalib/src/mesa/program/ir_to_mesa.cpp index aa5f007e9..0255b576c 100644 --- a/mesalib/src/mesa/program/ir_to_mesa.cpp +++ b/mesalib/src/mesa/program/ir_to_mesa.cpp @@ -2670,6 +2670,8 @@ ir_to_mesa_visitor::copy_propagate(void) ir_to_mesa_instruction **acp = rzalloc_array(mem_ctx,
ir_to_mesa_instruction *,
this->next_temp * 4);
+ int *acp_level = rzalloc_array(mem_ctx, int, this->next_temp * 4);
+ int level = 0;
foreach_iter(exec_list_iterator, iter, this->instructions) {
ir_to_mesa_instruction *inst = (ir_to_mesa_instruction *)iter.get();
@@ -2700,6 +2702,8 @@ ir_to_mesa_visitor::copy_propagate(void) break;
}
+ assert(acp_level[acp_base + src_chan] <= level);
+
if (!first) {
first = copy_chan;
} else {
@@ -2732,12 +2736,32 @@ ir_to_mesa_visitor::copy_propagate(void) switch (inst->op) {
case OPCODE_BGNLOOP:
case OPCODE_ENDLOOP:
- case OPCODE_ELSE:
- case OPCODE_ENDIF:
/* End of a basic block, clear the ACP entirely. */
memset(acp, 0, sizeof(*acp) * this->next_temp * 4);
break;
+ case OPCODE_IF:
+ ++level;
+ break;
+
+ case OPCODE_ENDIF:
+ case OPCODE_ELSE:
+ /* Clear all channels written inside the block from the ACP, but
+ * leaving those that were not touched.
+ */
+ for (int r = 0; r < this->next_temp; r++) {
+ for (int c = 0; c < 4; c++) {
+ if (!acp[4 * r + c])
+ continue;
+
+ if (acp_level[4 * r + c] >= level)
+ acp[4 * r + c] = NULL;
+ }
+ }
+ if (inst->op == OPCODE_ENDIF)
+ --level;
+ break;
+
default:
/* Continuing the block, clear any written channels from
* the ACP.
@@ -2802,11 +2826,13 @@ ir_to_mesa_visitor::copy_propagate(void) for (int i = 0; i < 4; i++) {
if (inst->dst_reg.writemask & (1 << i)) {
acp[4 * inst->dst_reg.index + i] = inst;
+ acp_level[4 * inst->dst_reg.index + i] = level;
}
}
}
}
+ ralloc_free(acp_level);
ralloc_free(acp);
}
|