[Libre-soc-bugs] [Bug 1135] add FPSCR and Rounding classes to ieee754fpu

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=1135

--- Comment #19 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Jacob Lifshay from comment #18)
> (In reply to Luke Kenneth Casson Leighton from comment #17)
> > Jacob: i used the wrong words.  it should be obvious
> > that *using* TestIssuer is required to test the FPU,
> 
> it isn't, all current ieee754fpu tests don't rely on it.

the top level bug funding this is bug #1025. unit tests are
always needed, but so are assembler instruction unit tests
(test_caller_fp.py)

> > as if it cannot be integrated into TestIssuer it's
> > 100% useless.
> 
> yes, more or less.

not "more or less" - just "yes". please don't force me to extract
a simple acknowledgment of a logical progressive chain of tasks.

bug #1025 states:

  The first NLnet grant allowed us to create IEEE754 FP pipelines,
  which now need integration into the Libre-SOC Core, and suitable
  unit tests created. 


> for this task specifically, my plan is to manually check it against the spec
> pdf or openpower-isa's fpscr since it's just datatypes.

ok. then be *really careful* not to do more work than bug #1025 can
handle. there's only EUR 8,000 available and appx EUR 1500 of that needs
to go to me.

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