Support querying SignedZeroInfNanPreserve execution mode from SPIR-V to disable fast-math for individual shaders. Clean up namespace references in SPIRVToMSLConverter.cpp.
Support querying SignedZeroInfNanPreserve execution mode from SPIR-V to disable fast-math for individual shaders. Clean up namespace references in SPIRVToMSLConverter.cpp.