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Sync with spike version of softfloat

Open troibe opened this issue 1 year ago • 0 comments

Addresses https://github.com/ucb-bar/berkeley-softfloat-3/issues/24 It adds the following modifications of softfloat version 3d from Spike:

  • Additional support for fp16 and bf16 conversions
  • Support for fmax/fmin, reciprocal, rsqrt

As far as I can tell all of these were added for the RISC-V vector extension. Any modifications related to the build system in Spike were left out.

As I'm just a user and by no means a softfloat expert, I would appreciate some advice on these things before merging:

  • I'm assuming the changes in specialization.h were specific to RISC-V. What would be the quickest way of optaining the special values for ARM and 8086? Then I'll adjust them from the RISC-V vaues which I currently just copied.
  • Were the unused paramater/variable warnings specific to the build system used in Spike (I couldn't reproduce them here)?

troibe avatar Feb 24 '24 23:02 troibe