[StackOverflowDetectionRemove ForceAddingStackcallKernelPrerequisites flag depenency from StackOverflowDetection

The ForceAddingStackcallKernelPrerequisites flag is not needed after recent changes, as the overflow checking calls will be placed only when needed.

Author: PawelJurek

IGC/Compiler/Optimizer/OpenCLPasses/PrivateMemory/PrivateMemoryUsageAnalysis.cpp

@@ -67,7 +67,9 @@ bool PrivateMemoryUsageAnalysis::runOnModule(Module& M)
     // If there are stack called functions in the module, add PRIVATE_BASE to all kernels to be safe.
     // PRIVATE_BASE is needed for kernel to get the stack base offset.
     // Callee does not require this arg, since all stack access will be done using the stack-pointer
-    if (hasStackCall || pCtx->m_enableFunctionPointer || IGC_IS_FLAG_ENABLED(ForceAddingStackcallKernelPrerequisites))
+    if (hasStackCall || pCtx->m_enableFunctionPointer ||
+        IGC_IS_FLAG_ENABLED(ForceAddingStackcallKernelPrerequisites) ||
+        IGC_IS_FLAG_ENABLED(StackOverflowDetection))
     {
         for (Module::iterator I = M.begin(), E = M.end(); I != E; ++I)
         {

IGC/common/igc_regkeys.cpp

@@ -845,8 +845,6 @@ static void setImpliedIGCKeys()
     IGC_SET_IMPLIED_REGKEY(ForceOCLSIMDWidth, 16, EnableOCLSIMD16, true);
     IGC_SET_IMPLIED_REGKEY(ForceOCLSIMDWidth,  8, EnableOCLSIMD32, false);
     IGC_SET_IMPLIED_REGKEY(ForceOCLSIMDWidth,  8, EnableOCLSIMD16, false);
-
-    IGC_SET_IMPLIED_REGKEY(StackOverflowDetection, 1, ForceAddingStackcallKernelPrerequisites, true);
 }
 
 void setImpliedRegkey(SRegKeyVariableMetaData& name,