SPIRV backend: printf related failures after e4c30c15c87f

[jsji]

Describe the bug

• DeviceLib/built-ins/printf.cpp

• Printf/char.cpp
  - Printf/float.cpp
  - Printf/double.cpp
  - DeviceLib/built-ins/printf.cpp
  - ThreadSanitizer/*

• llvm/test/CodeGen/SPIRV/printf.ll

To reproduce

1. Include a code snippet that is as short as possible
2. Specify the command which should be used to compile the program
3. Specify the command which should be used to launch the program
4. Indicate what is wrong and what was expected

Environment

• OS: [e.g Windows/Linux]
• Target device and vendor: [e.g. Intel GPU]
• DPC++ version: [e.g. commit hash or output of clang++ --version]
• Dependencies version: [e.g. the output of sycl-ls --verbose]

Additional context

No response