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OpcodeDispatcher: Implements all the 3DNow! instructions #1597

Merged
merged 7 commits into from
Mar 4, 2022
Merged

OpcodeDispatcher: Implements all the 3DNow! instructions #1597

merged 7 commits into from
Mar 4, 2022

Commits on Feb 28, 2022

  1. IR: Adds a VRev64 op 

    This directly matches the AArch64 instruction and will be used shortly
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  2. Opdispatcher: Minor bug fix with unimplemented op 

    If multiblock isn't enabled then on Unimplemented op we shouldn't create
a new block.

Was causing IR validation to get angry
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  3. Frontend: Fixes minor bug decoding 3DNow! 

    We already decoded the modrm `rm` bits, check while decoding modrm to
ensure we don't try decoding it again.
Was causing double decoding of SIB and displacement bytes, breaking
things
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  4. X86Tables: Fills out 3DNow tables 

    Fully decoded the same way and adds the Geode specific instruction
decodings as well.
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  5. OpcodeDispatcher: Implements all the 3DNow! instructions 

    This picks up all the instruction implementations, including 3DNow!
Extended and the Geode specific instructions that were added.

Most of these match preexisting SSE instructions except that they
operate at 64-bit and in the MMX registers.
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  6. CPUID: Enables 3DNow! + Extensions 

    Now that we support these
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  7. unittests: Implements 3DNow! unit tests 

    Covers the full space, of which there aren't many.

3DNow! unit tests are disabled on the CI runner since the x86 CPU in CI
doesn't support it.
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