This PR is to fix the following issues: * the SPIR-V Backend didn't generate Alignment decoration for alloca instructions, * we need to use types from demangled function declarations to specify types for opaque pointers.
This PR is to fix the following issues: * the SPIR-V Backend didn't generate Alignment decoration for alloca instructions, * we need to use types from demangled function declarations to specify types for opaque pointers.