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//===-- 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]
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