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17c35f6f3b
AsmMatcherEmitter. This function maps inline assembly operands to MCInst operands. For example, '__asm mov j, eax' is represented by the follow MCInst: <MCInst 1460 <MCOperand Reg:0> <MCOperand Imm:1> <MCOperand Reg:0> <MCOperand Expr:(j)> <MCOperand Reg:0> <MCOperand Reg:43>> The first 5 MCInst operands are a result of j matching as a memory operand consisting of a BaseReg (Reg:0), MemScale (Imm:1), MemIndexReg(Reg:0), Expr (Expr:(j), and a MemSegReg (Reg:0). The 6th MCInst operand represents the eax register (Reg:43). This translation is necessary to determine the Input and Output Exprs. If a single asm operand maps to multiple MCInst operands, the index of the first MCInst operand is returned. Ideally, it would return the operand we really care out (i.e., the Expr:(j) in this case), but I haven't found an easy way of doing this yet. llvm-svn: 162920 |
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