From d50c3f34a2eda5bf5e278c78d32cc9923fd83b82 Mon Sep 17 00:00:00 2001 From: aidanfnv Date: Tue, 1 Jul 2025 00:41:52 -0700 Subject: Add arguments for controlling floating point denormal mode (#7461) * Implement -fp-denorm-mode slangc arg * Split fp-denorm-mode into 3 args for fp16/32/64 * Remove redundant option categories * Use emitInst for multiple of the same OpExecutionMode * Fix formatting * Remove -denorm any * Re-add option categories * emitinst for ftz * Use enums for type text * Remove extra categories again * Add tests for denorm mode * Move denorm mode to post linking * format code (#8) Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com> * regenerate command line reference (#9) Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com> * Clean up tests * Fix option text * format code (#10) Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com> * Add tests for "any" mode * Return "any" enum if option not set * Simplify emission logic * Add support for generic entrypoints * Move denorm modes to end of CompilerOptionName enum * format code (#11) Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com> * Move new enum members to before CountOf * Add not checks to tests, fix generic test, add functionality tests * Rename denorm to fpDenormal * Clean up functional test * Rename denorm test dir * Fix formatting, regenerate cmdline ref * Fold simple tests into functional tests, add more dxil checks * Remove no-op DX tests, make tests more consistent * Disable VK functionality tests that will fail on the CI configs * Fix formatting * Add comments to disabled tests explaining why --------- Co-authored-by: slangbot Co-authored-by: slangbot <186143334+slangbot@users.noreply.github.com> --- docs/command-line-slangc-reference.md | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) (limited to 'docs/command-line-slangc-reference.md') diff --git a/docs/command-line-slangc-reference.md b/docs/command-line-slangc-reference.md index 30a0a5e6a..3a0b9acd1 100644 --- a/docs/command-line-slangc-reference.md +++ b/docs/command-line-slangc-reference.md @@ -27,6 +27,7 @@ slangc -help-style markdown -h * [line-directive-mode](#line-directive-mode) * [debug-info-format](#debug-info-format) * [fp-mode](#fp-mode) +* [fp-denormal-mode](#fp-denormal-mode) * [help-style](#help-style) * [optimization-level](#optimization-level) * [debug-level](#debug-level) @@ -396,6 +397,30 @@ Disables generics and specialization pass. Control floating point optimizations + +### -denorm-mode-fp16 + +**-denorm-mode-fp16 <[fp-denormal-mode](#fp-denormal-mode)>** + +Control handling of 16-bit denormal floating point values in SPIR-V (any, preserve, ftz) + + + +### -denorm-mode-fp32 + +**-denorm-mode-fp32 <[fp-denormal-mode](#fp-denormal-mode)>** + +Control handling of 32-bit denormal floating point values in SPIR-V and DXIL (any, preserve, ftz) + + + +### -denorm-mode-fp64 + +**-denorm-mode-fp64 <[fp-denormal-mode](#fp-denormal-mode)>** + +Control handling of 64-bit denormal floating point values in SPIR-V (any, preserve, ftz) + + ### -g @@ -962,6 +987,15 @@ Floating Point Mode * `fast` : Allow optimizations that may change results of floating-point computations. Prefer the fastest version of special functions supported by the target. * `default` : Default floating point mode + +## fp-denormal-mode + +Floating Point Denormal Handling Mode + +* `any` : Use any denormal handling mode (default). The mode used is implementation defined. +* `preserve` : Preserve denormal values +* `ftz` : Flush denormals to zero + ## help-style -- cgit v1.2.3