Changes in code.

Author: AnBodrova

IGC/common/igc_flags.h

@@ -401,7 +401,7 @@ DECLARE_IGC_REGKEY(bool, DisableGPGPUIndirectPayload,   false, "Disable OCL indi
 DECLARE_IGC_REGKEY(bool, DisableDSDualPatch,            false, "Setting it to true with enable Single and Dual Patch dispatch mode for Domain Shader", false)
 DECLARE_IGC_REGKEY(bool, DisableMemOpt,                 false, "Disable MemOpt, merging load/store", false)
 DECLARE_IGC_REGKEY(bool, DisableMemOpt2,                false, "Disable MemOpt2", false)
-DECLARE_IGC_REGKEY(DWORD, EnableLdStCombine,            1,     "Enable load/store combine pass if set to 1 or 2 (intend to replace memopt)", true)
+DECLARE_IGC_REGKEY(DWORD, EnableLdStCombine,            0,     "Enable load/store combine pass if set to 1 or 2 (intend to replace memopt)", true)
 DECLARE_IGC_REGKEY(bool, DisablePreRAScheduler,         false, "Disable Pre RA Scheduling", false)
 DECLARE_IGC_REGKEY(DWORD,MaxLiveOutThreshold,           0,     "Max LiveOut Threshold in MemOpt2", false)
 DECLARE_IGC_REGKEY(bool, DisableScalarAtomics,          false, "Disable the Scalar Atomics optimization", false)