FloatingPointMode.cpp - OpenGrok history log for /llvm-project-15.0.7/llvm/unittests/ADT/FloatingPointMode.cpp

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# a3c814d2	07-Nov-2019	Matt Arsenault <[email protected]>	Separately track input and output denormal mode AMDGPU and x86 at least both have separate controls for whether denormal results are flushed on output, and for whether denormals are implicitly treat Separately track input and output denormal mode AMDGPU and x86 at least both have separate controls for whether denormal results are flushed on output, and for whether denormals are implicitly treated as 0 as an input. The current DAGCombiner use only really cares about the input treatment of denormals. show more ...
# 7fe9435d	29-Oct-2019	Matt Arsenault <[email protected]>	Work on cleaning up denormal mode handling Cleanup handling of the denormal-fp-math attribute. Consolidate places checking the allowed names in one place. This is in preparation for introducing FP Work on cleaning up denormal mode handling Cleanup handling of the denormal-fp-math attribute. Consolidate places checking the allowed names in one place. This is in preparation for introducing FP type specific variants of the denormal-fp-mode attribute. AMDGPU will switch to using this in place of the current hacky use of subtarget features for the denormal mode. Introduce a new header for dealing with FP modes. The constrained intrinsic classes define related enums that should also be moved into this header for uses in other contexts. The verifier could use a check to make sure the denorm-fp-mode attribute is sane, but there currently isn't one. Currently, DAGCombiner incorrectly asssumes non-IEEE behavior by default in the one current user. Clang must be taught to start emitting this attribute by default to avoid regressions when this is switched to assume ieee behavior if the attribute isn't present. show more ...