SWDEV-491149 - OCL does not need to update scratch as it can't update stack size using API unlike hipDeviceSetLimit.

for HIP, Update should be only if compiler notifies use of stack size.

Change-Id: Ic781bcac6fcf586da39ec4aafd4809da3652ede3


[ROCm/clr commit: 4aa52155ee]

projects/clr/rocclr/device/pal/paldevice.cpp

@@ -2293,7 +2293,12 @@ bool Device::validateKernel(const amd::Kernel& kernel, const device::VirtualDevi
   // Find the number of scratch registers used in the kernel
   const device::Kernel* devKernel = kernel.getDeviceKernel(*this);
   uint32_t regNum = static_cast<uint32_t>(devKernel->workGroupInfo()->scratchRegs_);
-  regNum = std::max<uint32_t>(static_cast<uint32_t>(stack_size_) / sizeof(uint32_t), regNum);
+  // OCL does not have API to set dynamic stack size i.e. hipDeviceSetLimit and hence there
+  // is no need for OCL to refresh value here and even for HIP, Update should be only if
+  // compiler notifies use of stack size.
+  if (IS_HIP && (devKernel->workGroupInfo()->usedStackSize_ & 0x1) == 0x1) {
+    regNum = std::max<uint32_t>(static_cast<uint32_t>(stack_size_) / sizeof(uint32_t), regNum);
+  }
   const VirtualGPU* vgpu = static_cast<const VirtualGPU*>(vdev);
 
   if (!allocScratch(regNum, vgpu, devKernel->workGroupInfo()->usedVGPRs_)) {