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I'm not aware of any additional bits needed. But putting us right at the edge leaves me uncomfortable. So an implementation that isn't limited by the 7 bits in SubclassOptionalData seems sensible. Thanks, -Warren From: Sanjay Patel [mailto:spatel at rotateright.com] Sent: Monday, October 2, 2017 12:06 AM To: Ristow, Warren Cc: Hal Finkel; llvm-dev at lists.llvm.org Subject: Re:

...; (c) may violate the OpenCL numerical compliance requirements as > defined in the SPIR-V OpenCL environment specification for single > precision and double precision floating-point, and edge case behavior > in the SPIR-V OpenCL environment specification. This option includes > the -clno-signed-zeros and -cl-mad-enable options. I think the idea is that this flag, like -funsafe-math-optimizations, gets mapped to an appropriate collection of finer-grained flags internally. > > -cl-fast-relaxed-math > Sets the optimization options -cl-finite-math-only and > -cl-unsafe-...