Disable static check to push or fold constants

Change-Id: I6bb9e86b04604c4cf9085c1106b7a855997df513

Author: srividyakarumuri

IGC/Compiler/CISACodeGen/PushAnalysis.cpp

@@ -268,10 +268,10 @@ namespace IGC
         uint runtimeval0 = (uint)llvm::cast<llvm::ConstantInt>(pRuntimeVal->getOperand(0))->getZExtValue();
         PushInfo& pushInfo = m_context->getModuleMetaData()->pushInfo;
 
-        // then check for static root descriptor so that we can do push safely
+        // then check for static flag so that we can do push safely
         for (auto it : pushInfo.pushableAddresses)
         {
-            if (runtimeval0 * 4 == it.addressOffset && it.isStatic)
+            if ((runtimeval0 * 4 == it.addressOffset) && (IGC_IS_FLAG_ENABLED(DisableStaticCheck) || it.isStatic))
             {
                 GRFOffset = runtimeval0;
                 return true;

IGC/Compiler/CustomSafeOptPass.cpp

@@ -2269,7 +2269,7 @@ Constant* IGCConstProp::replaceShaderConstant(LoadInst* inst)
 
             for (auto it : pushInfo.pushableAddresses)
             {
-                if (bufIdOrGRFOffset * 4 == it.addressOffset && it.isStatic)
+                if ((bufIdOrGRFOffset * 4 == it.addressOffset) && (IGC_IS_FLAG_ENABLED(DisableStaticCheck) || it.isStatic))
                 {
                     statelessBuf = true;
                     break;

IGC/Compiler/FindInterestingConstants.cpp

@@ -218,7 +218,7 @@ bool FindInterestingConstants::getConstantAddress(llvm::LoadInst& I, unsigned& b
 
             for (auto it : pushInfo.pushableAddresses)
             {
-                if (bufIdOrGRFOffset * 4 == it.addressOffset && it.isStatic)
+                if ((bufIdOrGRFOffset * 4 == it.addressOffset) && (IGC_IS_FLAG_ENABLED(DisableStaticCheck) || it.isStatic))
                 {
                     statelessBuf = true;
                     break;

IGC/common/igc_flags.def

@@ -91,6 +91,7 @@ DECLARE_IGC_REGKEY(bool, DisableUniformAnalysis,        false, "Setting this to
 DECLARE_IGC_REGKEY(DWORD, DisablePushConstant,           0, "Bit mask to disable push constant per shader stages. bit0 = All, Bit 1 = VS, Bit 2 = HS, Bit 3 = DS, Bit 4 = GS, Bit 5 = PS", false)
 DECLARE_IGC_REGKEY(DWORD, DisableAttributePush,          0, "Bit mask to disable push Attribute per shader stages. bit0 = All, Bit 1 = VS, Bit 2 = HS, Bit 3 = DS, Bit 4 = GS", false)
 DECLARE_IGC_REGKEY(bool, DisableSimplePushWithDynamicUniformBuffers, false,"Disable Simple Push Constants Optimization for dynamic uniform buffers.", false)
+DECLARE_IGC_REGKEY(bool, DisableStaticCheck,            false, "Disable static check to push or fold constants.", true)
 DECLARE_IGC_REGKEY(int, forcePushConstantMode,  0, "set the push constant mode, 0 is default, 1 is simple push, 2 is gather constant", false)
 DECLARE_IGC_REGKEY(bool, DisableConstantCoalescing,     false, "Setting this to 1/true adds a compiler switch to disable constant coalesing", false)
 DECLARE_IGC_REGKEY(bool, UseHDCTypedReadForAllTextures, false, "Setting this to use HDC message rather than sampler ld for texture read", false)