llvm-project

199bbe2b - [MC] Teach checkAsmTiedOperandConstraints about optional operands (#81381)

[MC] Teach checkAsmTiedOperandConstraints about optional operands (#81381) At some point in the past, optional operands have become allowed in the middle of an instruction. However, `checkAsmTiedOperandConstrains` hasn't been modified to support this. This patch adds the support by pulling operand offsets counting out of `convertToMCInst` and reusing it in `checkAsmTiedOperandConstrains`.