| //===-- RISCVInstrInfoM.td - RISC-V 'M' instructions -------*- tablegen -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file describes the RISC-V instructions from the standard 'M', Integer |
| // Multiplication and Division instruction set extension. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| //===----------------------------------------------------------------------===// |
| // Instructions |
| //===----------------------------------------------------------------------===// |
| |
| let Predicates = [HasStdExtM] in { |
| def MUL : ALU_rr<0b0000001, 0b000, "mul">; |
| def MULH : ALU_rr<0b0000001, 0b001, "mulh">; |
| def MULHSU : ALU_rr<0b0000001, 0b010, "mulhsu">; |
| def MULHU : ALU_rr<0b0000001, 0b011, "mulhu">; |
| def DIV : ALU_rr<0b0000001, 0b100, "div">; |
| def DIVU : ALU_rr<0b0000001, 0b101, "divu">; |
| def REM : ALU_rr<0b0000001, 0b110, "rem">; |
| def REMU : ALU_rr<0b0000001, 0b111, "remu">; |
| } // Predicates = [HasStdExtM] |
| |
| let Predicates = [HasStdExtM, IsRV64] in { |
| def MULW : ALUW_rr<0b0000001, 0b000, "mulw">; |
| def DIVW : ALUW_rr<0b0000001, 0b100, "divw">; |
| def DIVUW : ALUW_rr<0b0000001, 0b101, "divuw">; |
| def REMW : ALUW_rr<0b0000001, 0b110, "remw">; |
| def REMUW : ALUW_rr<0b0000001, 0b111, "remuw">; |
| } // Predicates = [HasStdExtM, IsRV64] |
| |
| //===----------------------------------------------------------------------===// |
| // Pseudo-instructions and codegen patterns |
| //===----------------------------------------------------------------------===// |
| |
| let Predicates = [HasStdExtM] in { |
| def : PatGprGpr<mul, MUL>; |
| def : PatGprGpr<mulhs, MULH>; |
| def : PatGprGpr<mulhu, MULHU>; |
| // No ISDOpcode for mulhsu |
| def : PatGprGpr<sdiv, DIV>; |
| def : PatGprGpr<udiv, DIVU>; |
| def : PatGprGpr<srem, REM>; |
| def : PatGprGpr<urem, REMU>; |
| } // Predicates = [HasStdExtM] |
