P4 to Git Change 1077642 by yaxunl@yaxunl_stg_win50 on 2014/09/16 23:00:53

EPR #402000 - [CQE OCL][Perf][QR] ~6-7% perf drop in CompuCL Benchmark (Graphics: T-Rex subtest).

	Add option to disable SC merge memory loads and stores. By default it is disabled. Will decide whether to enable it by default after performance runs.
	cherrypick 1076590 and CL#1077419 from sc stg for adding option in sc.

Affected files ...

... //depot/stg/opencl/drivers/opencl/compiler/lib/backends/gpu/sc/Interface/SCCommon.h#42 integrate
... //depot/stg/opencl/drivers/opencl/compiler/lib/backends/gpu/sc/Src/CompilerBase.cpp#51 integrate
... //depot/stg/opencl/drivers/opencl/compiler/lib/backends/gpu/sc/Src/CompilerBase.hpp#35 integrate
... //depot/stg/opencl/drivers/opencl/compiler/lib/backends/gpu/sc/Src/HwUtils.cpp#36 integrate
... //depot/stg/opencl/drivers/opencl/compiler/lib/backends/gpu/scwrapper/scState.cpp#32 edit
... //depot/stg/opencl/drivers/opencl/compiler/lib/utils/OPTIONS.def#114 edit

rocclr/compiler/lib/utils/OPTIONS.def

@@ -700,6 +700,14 @@ OPTION(OT_BOOL, \
        false, 0, 0, NULL, \
        "SC does not unroll loops")
 
+//  -fsc-disable-merge-memory
+OPTION(OT_BOOL, \
+       OA_RUNTIME|OA_RUNTIME|OVIS_SUPPORT|OVA_DISALLOWED|OFA_PREFIX_F, \
+       "sc-disable-merge-memory", NULL, \
+       SCDisableMergeMemory, \
+       false, 0, 0, NULL, \
+       "SC does not merge memory loads and stores")
+
 //  -fsc-bias-schedule-to-minimize-regs
 OPTION(OT_BOOL, \
        OA_RUNTIME|OA_RUNTIME|OVIS_SUPPORT|OVA_DISALLOWED|OFA_PREFIX_F, \