StackOverflowDetection: fix for cases where stack pointer is 32 bit

When private pointer size is 32 bit, stack pointer is also set to be 32 bit in InitializeStackVariables.
GetStackPointer intrinsic assumed 64 bit size.

(cherry picked from commit 08a6ee8)

Author: PawelJurek

IGC/BiFModule/Implementation/assert.cl

@@ -46,7 +46,7 @@ void __devicelib_assert_fail(char *expr, char *file, int line, char *func, long
     __builtin_IB_software_exception();
 }
 
-long __builtin_IB_get_stack_pointer();
+ulong __builtin_IB_get_stack_pointer();
 int __builtin_IB_get_stack_size_per_thread();
 
 // This function needs to be inserted in entry points.
@@ -62,7 +62,7 @@ void __stackoverflow_init() {
     buf += 3;
     *buf = __builtin_IB_get_stack_size_per_thread();
     buf = buf + 1;
-    global long* stackBase = ((global long*)(buf));
+    global ulong* stackBase = ((global ulong*)(buf));
     stackBase[HWTID] = __builtin_IB_get_stack_pointer();
 }
 
@@ -74,7 +74,7 @@ void __stackoverflow_detection() {
     buf += 3;
     int stackSizePerThread = *buf;
     buf += 1;
-    long stackBase = ((global long*)(buf))[HWTID];
+    ulong stackBase = ((global ulong*)(buf))[HWTID];
 
     if (__builtin_IB_get_stack_pointer() - stackBase > stackSizePerThread) {
         global volatile AssertBufferHeader* header = (global volatile AssertBufferHeader*) __builtin_IB_get_assert_buffer();

IGC/Compiler/CISACodeGen/EmitVISAPass.cpp

@@ -8355,7 +8355,11 @@ void EmitPass::EmitGenIntrinsicMessage(llvm::GenIntrinsicInst* inst)
         break;
     }
     case GenISAIntrinsic::GenISA_getStackPointer: {
-        m_encoder->Copy(m_destination, m_currShader->GetSP());
+        IGC_ASSERT(m_destination->GetType() == ISA_TYPE_Q);
+        IGC_ASSERT(m_currShader->GetSP() &&
+                   (m_currShader->GetSP()->GetType() == ISA_TYPE_UQ ||
+                    m_currShader->GetSP()->GetType() == ISA_TYPE_UD));
+        m_encoder->Cast(m_destination, m_currShader->GetSP());
         m_encoder->Push();
         break;
     }