Thomas Schilling 05b045746a SSE Comparison instructions (#111) ...

* Add _mm_cmp*_ps variant (SSE)

* Add _mm_comi{eq,lt,le,gt,ge,neq}_ss instructions (sse)

* Add _mm_ucomi*_ss instructions SSE

They all compile down to the same x86 instruction, UCOMISS, whereas the
_mm_comi*_ss instructions compile down to COMISS. The outputs of both
sets of instructions are exactly the same. The only difference is in
exception handling. I therefore added a single test case which tests
their different effect on the MXCSR register (_mm_getcsr) of
_mm_comieq_ss vs. _mm_ucomieq_ss. Together with the tests about emitting
the right instruction, no tests further tests are needed for the other
variants.

* Avoid constant-folding test case

2017-10-12 13:47:21 -04:00

library/stdarch

SSE Comparison instructions (#111)

2017-10-12 13:47:21 -04:00

S

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