x86inc: Misc. improvements

requested review from @BugMaster

VEX-encoding patch probably need to check %4 == 1 if 4-operand emulation to not try emulate instructions which can't be emulated (e.g. 'blendvpd')

Or may be not if nasm would still encode it as 4-operand (where 1 and 2 operands are same) and not 3-operand.

But at minimum it should check %if avx_enabled && __sizeofreg >= 16 to not try use vmovaps for NON-VEX encoding (without FORCE_VEX_ENCODING) for 'blendvpd'. Or to be consitent with %0 == 8 branch: %if avx_enabled && __sizeofreg >= 16 && %4 == 1.

added 3 commits

• 3e2a0d4c - x86inc: Enable 4-operand emulation for variable blend instructions
• bb6b9e7e - x86inc: Fix edge case in forced VEX-encoding
• de06dc0e - x86inc: Add REPX macro to repeat instructions/operations

Compare with previous version

added 2 commits

• cf1429c1 - x86inc: Fix edge case in forced VEX-encoding
• 9b026b60 - x86inc: Add REPX macro to repeat instructions/operations

Compare with previous version

added 2 commits

• f52e5e11 - x86inc: Fix edge case in forced VEX-encoding
• 6d10612a - x86inc: Add REPX macro to repeat instructions/operations

Compare with previous version

resolved all threads

approved this merge request

merged