P4 to Git Change 1078026 by yaxunl@yaxunl_stg_win50 on 2014/09/17 21:51:23

EPR #402000 - Add option to control SC reg alloc strategy.

	[CQE OCL][Perf][QR] ~6-7% perf drop in CompuCL Benchmark (Graphics: T-Rex subtest).

Affected files ...

... //depot/stg/opencl/drivers/opencl/compiler/lib/backends/gpu/scwrapper/SI/scStateSI.cpp#25 edit
... //depot/stg/opencl/drivers/opencl/compiler/lib/utils/OPTIONS.def#115 edit


[ROCm/clr commit: 478f10bc24]

projects/clr/rocclr/compiler/lib/utils/OPTIONS.def

@@ -747,6 +747,17 @@ OPTION(OT_BOOL, \
        SCUseBufferForHsaGlobal, \
        false, 0, 0, NULL, \
        "HSA: use buffer instructions instead of flat for global memory")
+       
+// -scras=int or --sc-si-opt-reg-alloc-strategy (default 0)
+// 0 let shader compiler choose reg alloc strategy
+// keep this updated with SCShaderSi.h
+OPTION(OT_UINT32, \
+      OA_RUNTIME|OVIS_SUPPORT|OVA_REQUIRED|OA_SEPARATOR_EQUAL, \
+      "scras", "sc-si-opt-reg-alloc-strategy", \
+      SCSIOptRegAllocStrategy, \
+      0, 0, 3, NULL, \
+      "Set SI+ shader compiler register allocation strategy 0-default, "
+      "1-balanced, 2-minimize GPRs, 3-minimize moves (default 0).")
 
 //  -fuser-no-inline  -fno-user-no-inline
 OPTION(OT_BOOL, \