[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.

(cherry picked from commit 867ae9a)

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

@@ -846,8 +846,6 @@ 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,