[RISCV] Implement codegen for XAndesPerf lea instructions#137925
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This patch add the patterns for generating XAndesPerf lea instructions.
The operation of LEA family instructions is:
rd = rs1 + rs2 * (the number of bytes)
The variants with *.ze suffix are RV64 only and its operation is:
rd = rs1 + ZE32(rs2[31:0]) * (the number of bytes)