Save and restore FPCR around each VMX FP operation so vector code
doesn't leak FPCR state into scalar paths. Drop the DN bit so NaN
propagation fixup can inspect original payloads.
Based entirely off existing xbyak x86 implementation and available
tests. Still needs a lot of optimization and testing on non-Windows
platforms.
So far passes all tests and boots at least some games on Windows.
Copy src1 into dest before the masked vrangeps so that unmasked lanes
(normal/inf/NaN values) are preserved via merge-masking. Previously,
when the register allocator assigned different physical registers for
dest and src1, unmasked lanes would retain stale values from dest.
Tested with Intel SDE and AVX-512 cpu to verify.
Also shift unused FpRangeSign constants into bits [3:2] of the vrangeps
immediate, matching the Intel encoding. Only one used in the code was 0
so it was already correct by accident but using the others in the future
would produce incorrect results.
d37c22aa replaced skylander with the new portal HID library but
missed updating three CMakeLists.txt files. No replacement needed
since xenia-hid already links xenia-hid-portal transitively.
Add round-to-nearest-even to the fast float16 pack path by folding a
0xFFF rounding bias into XMMF16PackLCPI0 and extracting bit 13 of the
source as the tie-breaker, matching the software fallback behavior.
Fix PACK_SHORT_2 test to use pre-biased float input (0x40400000 = 3.0)
as the hardware expects, rather than raw 0.0f which is out of range.
The loop conditions `n < 8 - n` and `n < 4 - n` terminated early,
only checking the first half of elements. This caused EmitInt16 and
EmitInt32 to incorrectly take the uniform shift path when trailing
elements had different shift amounts.
Resolves potential issues in SHL, SHR, and SHA.
Edit one of the lanes in this unit-test to be larger than the width of
the element-size to ensure that this case is handled correctly.
It should only mask the lower `log2(32)=5` bits of the input, causing
`33`(`100001`) to be `1`(`000001`).
C++17ification!
- Filesystem interaction now uses std::filesystem::path.
- Usage of const char*, std::string have been changed to
std::string_view where appropriate.
- Usage of printf-style functions changed to use fmt.
