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[SPIRV] Preserve NaN, Inf, and signed zeros w/ -Gis - #7693
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Chris B (llvm-beanz) merged 3 commits intoAug 18, 2025
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Chris B (llvm-beanz) merged 3 commits into
Chris B (llvm-beanz) merged 3 commits into
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The `-Gis` flag opts into "strict" IEEE math rules, which include preserving NaN, Inf and signed/unsigned zeros. This change adds the SPIRV SignedZeroInfNanPreserve capability and execution mode when `-Gis` is passed to DXC. ../tools/clang/test/CodeGenSPIRV/SignedZeroInfNanPreserve.hlsl
Chris B (llvm-beanz)
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Nathan Gauër (Keenuts) and
Steven Perron (s-perron)
August 12, 2025 01:06
Nathan Gauër (Keenuts)
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Nathan Gauër (Keenuts)
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Thanks! Just the extension possibility, otherwise if there is a reason not to, looks good
../tools/clang/test/CodeGenSPIRV/SignedZeroInfNanPreserve.hlsl
Nathan Gauër (Keenuts)
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Aug 13, 2025
Nathan Gauër (Keenuts)
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Minor nit on the CHECK line name, otherwise LGTM,thanks!
Co-authored-by: Nathan Gauër <github@keenuts.net>
Steven Perron (s-perron)
approved these changes
Aug 18, 2025
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The
-Gisflag opts into "strict" IEEE math rules, which include preserving NaN, Inf and signed/unsigned zeros. This change adds the SPIRV SignedZeroInfNanPreserve capability and execution mode when-Gisis passed to DXC.