[Mesa-dev] [PATCH 5/7] i965/fs: Move the old gen4 bspec-based scheduling info to a helper func.
Eric Anholt
eric at anholt.net
Fri Dec 7 14:58:16 PST 2012
For gen7 everything changes, and we have actual information on latency.
---
.../dri/i965/brw_fs_schedule_instructions.cpp | 74 +++++++++++---------
1 file changed, 41 insertions(+), 33 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_fs_schedule_instructions.cpp b/src/mesa/drivers/dri/i965/brw_fs_schedule_instructions.cpp
index 3941eac..0796316 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_schedule_instructions.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_schedule_instructions.cpp
@@ -67,41 +67,11 @@ public:
this->parent_count = 0;
this->unblocked_time = 0;
- int chans = 8;
- int math_latency = 22;
-
- switch (inst->opcode) {
- case SHADER_OPCODE_RCP:
- this->latency = 1 * chans * math_latency;
- break;
- case SHADER_OPCODE_RSQ:
- this->latency = 2 * chans * math_latency;
- break;
- case SHADER_OPCODE_INT_QUOTIENT:
- case SHADER_OPCODE_SQRT:
- case SHADER_OPCODE_LOG2:
- /* full precision log. partial is 2. */
- this->latency = 3 * chans * math_latency;
- break;
- case SHADER_OPCODE_INT_REMAINDER:
- case SHADER_OPCODE_EXP2:
- /* full precision. partial is 3, same throughput. */
- this->latency = 4 * chans * math_latency;
- break;
- case SHADER_OPCODE_POW:
- this->latency = 8 * chans * math_latency;
- break;
- case SHADER_OPCODE_SIN:
- case SHADER_OPCODE_COS:
- /* minimum latency, max is 12 rounds. */
- this->latency = 5 * chans * math_latency;
- break;
- default:
- this->latency = 2;
- break;
- }
+ set_latency_gen4();
}
+ void set_latency_gen4();
+
fs_inst *inst;
schedule_node **children;
int *child_latency;
@@ -112,6 +82,44 @@ public:
int latency;
};
+void
+schedule_node::set_latency_gen4()
+{
+ int chans = 8;
+ int math_latency = 22;
+
+ switch (inst->opcode) {
+ case SHADER_OPCODE_RCP:
+ this->latency = 1 * chans * math_latency;
+ break;
+ case SHADER_OPCODE_RSQ:
+ this->latency = 2 * chans * math_latency;
+ break;
+ case SHADER_OPCODE_INT_QUOTIENT:
+ case SHADER_OPCODE_SQRT:
+ case SHADER_OPCODE_LOG2:
+ /* full precision log. partial is 2. */
+ this->latency = 3 * chans * math_latency;
+ break;
+ case SHADER_OPCODE_INT_REMAINDER:
+ case SHADER_OPCODE_EXP2:
+ /* full precision. partial is 3, same throughput. */
+ this->latency = 4 * chans * math_latency;
+ break;
+ case SHADER_OPCODE_POW:
+ this->latency = 8 * chans * math_latency;
+ break;
+ case SHADER_OPCODE_SIN:
+ case SHADER_OPCODE_COS:
+ /* minimum latency, max is 12 rounds. */
+ this->latency = 5 * chans * math_latency;
+ break;
+ default:
+ this->latency = 2;
+ break;
+ }
+}
+
class instruction_scheduler {
public:
instruction_scheduler(fs_visitor *v, void *mem_ctx, int grf_count,
--
1.7.10.4
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