path: root/lib/Target/X86/X86InstrShiftRotate.td

//===- X86InstrShiftRotate.td - Shift and Rotate Instrs ----*- 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 shift and rotate instructions.
//
//===----------------------------------------------------------------------===//

// FIXME: Someone needs to smear multipattern goodness all over this file.

let Defs = [EFLAGS] in {

let Constraints = "$src1 = $dst" in {
let Uses = [CL] in {
def SHL8rCL  : I<0xD2, MRM4r, (outs GR8 :$dst), (ins GR8 :$src1),
                 "shl{b}\t{%cl, $dst|$dst, CL}",
                 [(set GR8:$dst, (shl GR8:$src1, CL))]>;
def SHL16rCL : I<0xD3, MRM4r, (outs GR16:$dst), (ins GR16:$src1),
                 "shl{w}\t{%cl, $dst|$dst, CL}",
                 [(set GR16:$dst, (shl GR16:$src1, CL))]>, OpSize;
def SHL32rCL : I<0xD3, MRM4r, (outs GR32:$dst), (ins GR32:$src1),
                 "shl{l}\t{%cl, $dst|$dst, CL}",
                 [(set GR32:$dst, (shl GR32:$src1, CL))]>;
def SHL64rCL : RI<0xD3, MRM4r, (outs GR64:$dst), (ins GR64:$src1),
                  "shl{q}\t{%cl, $dst|$dst, %CL}",
                  [(set GR64:$dst, (shl GR64:$src1, CL))]>;
} // Uses = [CL]

def SHL8ri   : Ii8<0xC0, MRM4r, (outs GR8 :$dst), (ins GR8 :$src1, i8imm:$src2),
                   "shl{b}\t{$src2, $dst|$dst, $src2}",
                   [(set GR8:$dst, (shl GR8:$src1, (i8 imm:$src2)))]>;
                   
let isConvertibleToThreeAddress = 1 in {   // Can transform into LEA.
def SHL16ri  : Ii8<0xC1, MRM4r, (outs GR16:$dst), (ins GR16:$src1, i8imm:$src2),
                   "shl{w}\t{$src2, $dst|$dst, $src2}",
                   [(set GR16:$dst, (shl GR16:$src1, (i8 imm:$src2)))]>, OpSize;
def SHL32ri  : Ii8<0xC1, MRM4r, (outs GR32:$dst), (ins GR32:$src1, i8imm:$src2),
                   "shl{l}\t{$src2, $dst|$dst, $src2}",
                   [(set GR32:$dst, (shl GR32:$src1, (i8 imm:$src2)))]>;
def SHL64ri  : RIi8<0xC1, MRM4r, (outs GR64:$dst), 
                    (ins GR64:$src1, i8imm:$src2),
                    "shl{q}\t{$src2, $dst|$dst, $src2}",
                    [(set GR64:$dst, (shl GR64:$src1, (i8 imm:$src2)))]>;

// NOTE: We don't include patterns for shifts of a register by one, because
// 'add reg,reg' is cheaper (and we have a Pat pattern for shift-by-one).
def SHL8r1   : I<0xD0, MRM4r, (outs GR8:$dst), (ins GR8:$src1),
                 "shl{b}\t$dst", []>;
def SHL16r1  : I<0xD1, MRM4r, (outs GR16:$dst), (ins GR16:$src1),
                 "shl{w}\t$dst", []>, OpSize;
def SHL32r1  : I<0xD1, MRM4r, (outs GR32:$dst), (ins GR32:$src1),
                 "shl{l}\t$dst", []>;
def SHL64r1  : RI<0xD1, MRM4r, (outs GR64:$dst), (ins GR64:$src1),
                 "shl{q}\t$dst", []>;
} // isConvertibleToThreeAddress = 1
} // Constraints = "$src = $dst" 


// FIXME: Why do we need an explicit "Uses = [CL]" when the instr has a pattern
// using CL?
let Uses = [CL] in {
def SHL8mCL  : I<0xD2, MRM4m, (outs), (ins i8mem :$dst),
                 "shl{b}\t{%cl, $dst|$dst, CL}",
                 [(store (shl (loadi8 addr:$dst), CL), addr:$dst)]>;
def SHL16mCL : I<0xD3, MRM4m, (outs), (ins i16mem:$dst),
                 "shl{w}\t{%cl, $dst|$dst, CL}",
                 [(store (shl (loadi16 addr:$dst), CL), addr:$dst)]>, OpSize;
def SHL32mCL : I<0xD3, MRM4m, (outs), (ins i32mem:$dst),
                 "shl{l}\t{%cl, $dst|$dst, CL}",
                 [(store (shl (loadi32 addr:$dst), CL), addr:$dst)]>;
def SHL64mCL : RI<0xD3, MRM4m, (outs), (ins i64mem:$dst),
                  "shl{q}\t{%cl, $dst|$dst, %CL}",
                  [(store (shl (loadi64 addr:$dst), CL), addr:$dst)]>;
}
def SHL8mi   : Ii8<0xC0, MRM4m, (outs), (ins i8mem :$dst, i8imm:$src),
                   "shl{b}\t{$src, $dst|$dst, $src}",
                [(store (shl (loadi8 addr:$dst), (i8 imm:$src)), addr:$dst)]>;
def SHL16mi  : Ii8<0xC1, MRM4m, (outs), (ins i16mem:$dst, i8imm:$src),
                   "shl{w}\t{$src, $dst|$dst, $src}",
               [(store (shl (loadi16 addr:$dst), (i8 imm:$src)), addr:$dst)]>,
                   OpSize;
def SHL32mi  : Ii8<0xC1, MRM4m, (outs), (ins i32mem:$dst, i8imm:$src),
                   "shl{l}\t{$src, $dst|$dst, $src}",
               [(store (shl (loadi32 addr:$dst), (i8 imm:$src)), addr:$dst)]>;
def SHL64mi : RIi8<0xC1, MRM4m, (outs), (ins i64mem:$dst, i8imm:$src),
                  "shl{q}\t{$src, $dst|$dst, $src}",
                 [(store (shl (loadi64 addr:$dst), (i8 imm:$src)), addr:$dst)]>;

// Shift by 1
def SHL8m1   : I<0xD0, MRM4m, (outs), (ins i8mem :$dst),
                 "shl{b}\t$dst",
                [(store (shl (loadi8 addr:$dst), (i8 1)), addr:$dst)]>;
def SHL16m1  : I<0xD1, MRM4m, (outs), (ins i16mem:$dst),
                 "shl{w}\t$dst",
               [(store (shl (loadi16 addr:$dst), (i8 1)), addr:$dst)]>,
                   OpSize;
def SHL32m1  : I<0xD1, MRM4m, (outs), (ins i32mem:$dst),
                 "shl{l}\t$dst",
               [(store (shl (loadi32 addr:$dst), (i8 1)), addr:$dst)]>;
def SHL64m1 : RI<0xD1, MRM4m, (outs), (ins i64mem:$dst),
                  "shl{q}\t$dst",
                 [(store (shl (loadi64 addr:$dst), (i8 1)), addr:$dst)]>;

let Constraints = "$src1 = $dst" in {
let Uses = [CL] in {
def SHR8rCL  : I<0xD2, MRM5r, (outs GR8 :$dst), (ins GR8 :$src1),
                 "shr{b}\t{%cl, $dst|$dst, CL}",
                 [(set GR8:$dst, (srl GR8:$src1, CL))]>;
def SHR16rCL : I<0xD3, MRM5r, (outs GR16:$dst), (ins GR16:$src1),
                 "shr{w}\t{%cl, $dst|$dst, CL}",
                 [(set GR16:$dst, (srl GR16:$src1, CL))]>, OpSize;
def SHR32rCL : I<0xD3, MRM5r, (outs GR32:$dst), (ins GR32:$src1),
                 "shr{l}\t{%cl, $dst|$dst, CL}",
                 [(set GR32:$dst, (srl GR32:$src1, CL))]>;
def SHR64rCL : RI<0xD3, MRM5r, (outs GR64:$dst), (ins GR64:$src1),
                  "shr{q}\t{%cl, $dst|$dst, %CL}",
                  [(set GR64:$dst, (srl GR64:$src1, CL))]>;
}

def SHR8ri   : Ii8<0xC0, MRM5r, (outs GR8:$dst), (ins GR8:$src1, i8imm:$src2),
                   "shr{b}\t{$src2, $dst|$dst, $src2}",
                   [(set GR8:$dst, (srl GR8:$src1, (i8 imm:$src2)))]>;
def SHR16ri  : Ii8<0xC1, MRM5r, (outs GR16:$dst), (ins GR16:$src1, i8imm:$src2),
                   "shr{w}\t{$src2, $dst|$dst, $src2}",
                   [(set GR16:$dst, (srl GR16:$src1, (i8 imm:$src2)))]>, OpSize;
def SHR32ri  : Ii8<0xC1, MRM5r, (outs GR32:$dst), (ins GR32:$src1, i8imm:$src2),
                   "shr{l}\t{$src2, $dst|$dst, $src2}",
                   [(set GR32:$dst, (srl GR32:$src1, (i8 imm:$src2)))]>;
def SHR64ri : RIi8<0xC1, MRM5r, (outs GR64:$dst), (ins GR64:$src1, i8imm:$src2),
                  "shr{q}\t{$src2, $dst|$dst, $src2}",
                  [(set GR64:$dst, (srl GR64:$src1, (i8 imm:$src2)))]>;

// Shift right by 1
def SHR8r1   : I<0xD0, MRM5r, (outs GR8:$dst), (ins GR8:$src1),
                 "shr{b}\t$dst",
                 [(set GR8:$dst, (srl GR8:$src1, (i8 1)))]>;
def SHR16r1  : I<0xD1, MRM5r, (outs GR16:$dst), (ins GR16:$src1),
                 "shr{w}\t$dst",
                 [(set GR16:$dst, (srl GR16:$src1, (i8 1)))]>, OpSize;
def SHR32r1  : I<0xD1, MRM5r, (outs GR32:$dst), (ins GR32:$src1),
                 "shr{l}\t$dst",
                 [(set GR32:$dst, (srl GR32:$src1, (i8 1)))]>;
def SHR64r1  : RI<0xD1, MRM5r, (outs GR64:$dst), (ins GR64:$src1),
                 "shr{q}\t$dst",
                 [(set GR64:$dst, (srl GR64:$src1, (i8 1)))]>;
} // Constraints = "$src = $dst"


let Uses = [CL] in {
def SHR8mCL  : I<0xD2, MRM5m, (outs), (ins i8mem :$dst),
                 "shr{b}\t{%cl, $dst|$dst, CL}",
                 [(store (srl (loadi8 addr:$dst), CL), addr:$dst)]>;
def SHR16mCL : I<0xD3, MRM5m, (outs), (ins i16mem:$dst),
                 "shr{w}\t{%cl, $dst|$dst, CL}",
                 [(store (srl (loadi16 addr:$dst), CL), addr:$dst)]>,
                 OpSize;
def SHR32mCL : I<0xD3, MRM5m, (outs), (ins i32mem:$dst),
                 "shr{l}\t{%cl, $dst|$dst, CL}",
                 [(store (srl (loadi32 addr:$dst), CL), addr:$dst)]>;
def SHR64mCL : RI<0xD3, MRM5m, (outs), (ins i64mem:$dst),
                  "shr{q}\t{%cl, $dst|$dst, %CL}",
                  [(store (srl (loadi64 addr:$dst), CL), addr:$dst)]>;
}
def SHR8mi   : Ii8<0xC0, MRM5m, (outs), (ins i8mem :$dst, i8imm:$src),
                   "shr{b}\t{$src, $dst|$dst, $src}",
                [(store (srl (loadi8 addr:$dst), (i8 imm:$src)), addr:$dst)]>;
def SHR16mi  : Ii8<0xC1, MRM5m, (outs), (ins i16mem:$dst, i8imm:$src),
                   "shr{w}\t{$src, $dst|$dst, $src}",
               [(store (srl (loadi16 addr:$dst), (i8 imm:$src)), addr:$dst)]>,
                   OpSize;
def SHR32mi  : Ii8<0xC1, MRM5m, (outs), (ins i32mem:$dst, i8imm:$src),
                   "shr{l}\t{$src, $dst|$dst, $src}",
               [(store (srl (loadi32 addr:$dst), (i8 imm:$src)), addr:$dst)]>;
def SHR64mi : RIi8<0xC1, MRM5m, (outs), (ins i64mem:$dst, i8imm:$src),
                  "shr{q}\t{$src, $dst|$dst, $src}",
                 [(store (srl (loadi64 addr:$dst), (i8 imm:$src)), addr:$dst)]>;

// Shift by 1
def SHR8m1   : I<0xD0, MRM5m, (outs), (ins i8mem :$dst),
                 "shr{b}\t$dst",
                [(store (srl (loadi8 addr:$dst), (i8 1)), addr:$dst)]>;
def SHR16m1  : I<0xD1, MRM5m, (outs), (ins i16mem:$dst),
                 "shr{w}\t$dst",
               [(store (srl (loadi16 addr:$dst), (i8 1)), addr:$dst)]>,OpSize;
def SHR32m1  : I<0xD1, MRM5m, (outs), (ins i32mem:$dst),
                 "shr{l}\t$dst",
               [(store (srl (loadi32 addr:$dst), (i8 1)), addr:$dst)]>;
def SHR64m1 : RI<0xD1, MRM5m, (outs), (ins i64mem:$dst),
                  "shr{q}\t$dst",
                 [(store (srl (loadi64 addr:$dst), (i8 1)), addr:$dst)]>;

let Constraints = "$src1 = $dst" in {
let Uses = [CL] in {
def SAR8rCL  : I<0xD2, MRM7r, (outs GR8 :$dst), (ins GR8 :$src1),
                 "sar{b}\t{%cl, $dst|$dst, CL}",
                 [(set GR8:$dst, (sra GR8:$src1, CL))]>;
def SAR16rCL : I<0xD3, MRM7r, (outs GR16:$dst), (ins GR16:$src1),
                 "sar{w}\t{%cl, $dst|$dst, CL}",
                 [(set GR16:$dst, (sra GR16:$src1, CL))]>, OpSize;
def SAR32rCL : I<0xD3, MRM7r, (outs GR32:$dst), (ins GR32:$src1),
                 "sar{l}\t{%cl, $dst|$dst, CL}",
                 [(set GR32:$dst, (sra GR32:$src1, CL))]>;
def SAR64rCL : RI<0xD3, MRM7r, (outs GR64:$dst), (ins GR64:$src1),
                 "sar{q}\t{%cl, $dst|$dst, %CL}",
                 [(set GR64:$dst, (sra GR64:$src1, CL))]>;
}

def SAR8ri   : Ii8<0xC0, MRM7r, (outs GR8 :$dst), (ins GR8 :$src1, i8imm:$src2),
                   "sar{b}\t{$src2, $dst|$dst, $src2}",
                   [(set GR8:$dst, (sra GR8:$src1, (i8 imm:$src2)))]>;
def SAR16ri  : Ii8<0xC1, MRM7r, (outs GR16:$dst), (ins GR16:$src1, i8imm:$src2),
                   "sar{w}\t{$src2, $dst|$dst, $src2}",
                   [(set GR16:$dst, (sra GR16:$src1, (i8 imm:$src2)))]>,
                   OpSize;
def SAR32ri  : Ii8<0xC1, MRM7r, (outs GR32:$dst), (ins GR32:$src1, i8imm:$src2),
                   "sar{l}\t{$src2, $dst|$dst, $src2}",
                   [(set GR32:$dst, (sra GR32:$src1, (i8 imm:$src2)))]>;
def SAR64ri  : RIi8<0xC1, MRM7r, (outs GR64:$dst),
                    (ins GR64:$src1, i8imm:$src2),
                    "sar{q}\t{$src2, $dst|$dst, $src2}",
                    [(set GR64:$dst, (sra GR64:$src1, (i8 imm:$src2)))]>;

// Shift by 1
def SAR8r1   : I<0xD0, MRM7r, (outs GR8 :$dst), (ins GR8 :$src1),
                 "sar{b}\t$dst",
                 [(set GR8:$dst, (sra GR8:$src1, (i8 1)))]>;
def SAR16r1  : I<0xD1, MRM7r, (outs GR16:$dst), (ins GR16:$src1),
                 "sar{w}\t$dst",
                 [(set GR16:$dst, (sra GR16:$src1, (i8 1)))]>, OpSize;
def SAR32r1  : I<0xD1, MRM7r, (outs GR32:$dst), (ins GR32:$src1),
                 "sar{l}\t$dst",
                 [(set GR32:$dst, (sra GR32:$src1, (i8 1)))]>;
def SAR64r1  : RI<0xD1, MRM7r, (outs GR64:$dst), (ins GR64:$src1),
                 "sar{q}\t$dst",
                 [(set GR64:$dst, (sra GR64:$src1, (i8 1)))]>;
} // Constraints = "$src = $dst"


let Uses = [CL] in {
def SAR8mCL  : I<0xD2, MRM7m, (outs), (ins i8mem :$dst),
                 "sar{b}\t{%cl, $dst|$dst, CL}",
                 [(store (sra (loadi8 addr:$dst), CL), addr:$dst)]>;
def SAR16mCL : I<0xD3, MRM7m, (outs), (ins i16mem:$dst),
                 "sar{w}\t{%cl, $dst|$dst, CL}",
                 [(store (sra (loadi16 addr:$dst), CL), addr:$dst)]>, OpSize;
def SAR32mCL : I<0xD3, MRM7m, (outs), (ins i32mem:$dst), 
                 "sar{l}\t{%cl, $dst|$dst, CL}",
                 [(store (sra (loadi32 addr:$dst), CL), addr:$dst)]>;
def SAR64mCL : RI<0xD3, MRM7m, (outs), (ins i64mem:$dst), 
                 "sar{q}\t{%cl, $dst|$dst, %CL}",
                 [(store (sra (loadi64 addr:$dst), CL), addr:$dst)]>;
}
def SAR8mi   : Ii8<0xC0, MRM7m, (outs), (ins i8mem :$dst, i8imm:$src),
                   "sar{b}\t{$src, $dst|$dst, $src}",
                [(store (sra (loadi8 addr:$dst), (i8 imm:$src)), addr:$dst)]>;
def SAR16mi  : Ii8<0xC1, MRM7m, (outs), (ins i16mem:$dst, i8imm:$src),
                   "sar{w}\t{$src, $dst|$dst, $src}",
               [(store (sra (loadi16 addr:$dst), (i8 imm:$src)), addr:$dst)]>,
                   OpSize;
def SAR32mi  : Ii8<0xC1, MRM7m, (outs), (ins i32mem:$dst, i8imm:$src),
                   "sar{l}\t{$src, $dst|$dst, $src}",
               [(store (sra (loadi32 addr:$dst), (i8 imm:$src)), addr:$dst)]>;
def SAR64mi  : RIi8<0xC1, MRM7m, (outs), (ins i64mem:$dst, i8imm:$src),
                    "sar{q}\t{$src, $dst|$dst, $src}",
                 [(store (sra (loadi64 addr:$dst), (i8 imm:$src)), addr:$dst)]>;

// Shift by 1
def SAR8m1   : I<0xD0, MRM7m, (outs), (ins i8mem :$dst),
                 "sar{b}\t$dst",
                [(store (sra (loadi8 addr:$dst), (i8 1)), addr:$dst)]>;
def SAR16m1  : I<0xD1, MRM7m, (outs), (ins i16mem:$dst),
                 "sar{w}\t$dst",
               [(store (sra (loadi16 addr:$dst), (i8 1)), addr:$dst)]>,
                   OpSize;
def SAR32m1  : I<0xD1, MRM7m, (outs), (ins i32mem:$dst),
                 "sar{l}\t$dst",
               [(store (sra (loadi32 addr:$dst), (i8 1)), addr:$dst)]>;
def SAR64m1 : RI<0xD1, MRM7m, (outs), (ins i64mem:$dst),
                  "sar{q}\t$dst",
                 [(store (sra (loadi64 addr:$dst), (i8 1)), addr:$dst)]>;

//===----------------------------------------------------------------------===//
// Rotate instructions
//===----------------------------------------------------------------------===//

let Constraints = "$src1 = $dst" in {
def RCL8r1 : I<0xD0, MRM2r, (outs GR8:$dst), (ins GR8:$src1),
               "rcl{b}\t$dst", []>;
def RCL8ri : Ii8<0xC0, MRM2r, (outs GR8:$dst), (ins GR8:$src1, i8imm:$cnt),
                 "rcl{b}\t{$cnt, $dst|$dst, $cnt}", []>;
let Uses = [CL] in
def RCL8rCL : I<0xD2, MRM2r, (outs GR8:$dst), (ins GR8:$src1),
                "rcl{b}\t{%cl, $dst|$dst, CL}", []>;
  
def RCL16r1 : I<0xD1, MRM2r, (outs GR16:$dst), (ins GR16:$src1),
                "rcl{w}\t$dst", []>, OpSize;
def RCL16ri : Ii8<0xC1, MRM2r, (outs GR16:$dst), (ins GR16:$src1, i8imm:$cnt),
                  "rcl{w}\t{$cnt, $dst|$dst, $cnt}", []>, OpSize;
let Uses = [CL] in
def RCL16rCL : I<0xD3, MRM2r, (outs GR16:$dst), (ins GR16:$src1),
                 "rcl{w}\t{%cl, $dst|$dst, CL}", []>, OpSize;

def RCL32r1 : I<0xD1, MRM2r, (outs GR32:$dst), (ins GR32:$src1),
                "rcl{l}\t$dst", []>;
def RCL32ri : Ii8<0xC1, MRM2r, (outs GR32:$dst), (ins GR32:$src1, i8imm:$cnt),
                  "rcl{l}\t{$cnt, $dst|$dst, $cnt}", []>;
let Uses = [CL] in
def RCL32rCL : I<0xD3, MRM2r, (outs GR32:$dst), (ins GR32:$src1),
                 "rcl{l}\t{%cl, $dst|$dst, CL}", []>;


def RCL64r1 : RI<0xD1, MRM2r, (outs GR64:$dst), (ins GR64:$src1),
                 "rcl{q}\t$dst", []>;
def RCL64ri : RIi8<0xC1, MRM2r, (outs GR64:$dst), (ins GR64:$src1, i8imm:$cnt),
                   "rcl{q}\t{$cnt, $dst|$dst, $cnt}", []>;
let Uses = [CL] in
def RCL64rCL : RI<0xD3, MRM2r, (outs GR64:$dst), (ins GR64:$src1),
                  "rcl{q}\t{%cl, $dst|$dst, CL}", []>;


def RCR8r1 : I<0xD0, MRM3r, (outs GR8:$dst), (ins GR8:$src1),
               "rcr{b}\t$dst", []>;
def RCR8ri : Ii8<0xC0, MRM3r, (outs GR8:$dst), (ins GR8:$src1, i8imm:$cnt),
                 "rcr{b}\t{$cnt, $dst|$dst, $cnt}", []>;
let Uses = [CL] in
def RCR8rCL : I<0xD2, MRM3r, (outs GR8:$dst), (ins GR8:$src1),
                "rcr{b}\t{%cl, $dst|$dst, CL}", []>;
  
def RCR16r1 : I<0xD1, MRM3r, (outs GR16:$dst), (ins GR16:$src1),
                "rcr{w}\t$dst", []>, OpSize;
def RCR16ri : Ii8<0xC1, MRM3r, (outs GR16:$dst), (ins GR16:$src1, i8imm:$cnt),
                  "rcr{w}\t{$cnt, $dst|$dst, $cnt}", []>, OpSize;
let Uses = [CL] in
def RCR16rCL : I<0xD3, MRM3r, (outs GR16:$dst), (ins GR16:$src1),
                 "rcr{w}\t{%cl, $dst|$dst, CL}", []>, OpSize;

def RCR32r1 : I<0xD1, MRM3r, (outs GR32:$dst), (ins GR32:$src1),
                "rcr{l}\t$dst", []>;
def RCR32ri : Ii8<0xC1, MRM3r, (outs GR32:$dst), (ins GR32:$src1, i8imm:$cnt),
                  "rcr{l}\t{$cnt, $dst|$dst, $cnt}", []>;
let Uses = [CL] in
def RCR32rCL : I<0xD3, MRM3r, (outs GR32:$dst), (ins GR32:$src1),
                 "rcr{l}\t{%cl, $dst|$dst, CL}", []>;
                 
def RCR64r1 : RI<0xD1, MRM3r, (outs GR64:$dst), (ins GR64:$src1),
                 "rcr{q}\t$dst", []>;
def RCR64ri : RIi8<0xC1, MRM3r, (outs GR64:$dst), (ins GR64:$src1, i8imm:$cnt),
                   "rcr{q}\t{$cnt, $dst|$dst, $cnt}", []>;
let Uses = [CL] in
def RCR64rCL : RI<0xD3, MRM3r, (outs GR64:$dst), (ins GR64:$src1),
                  "rcr{q}\t{%cl, $dst|$dst, CL}", []>;

} // Constraints = "$src = $dst"

def RCL8m1 : I<0xD0, MRM2m, (outs), (ins i8mem:$dst),
               "rcl{b}\t$dst", []>;
def RCL8mi : Ii8<0xC0, MRM2m, (outs), (ins i8mem:$dst, i8imm:$cnt),
                 "rcl{b}\t{$cnt, $dst|$dst, $cnt}", []>;
def RCL16m1 : I<0xD1, MRM2m, (outs), (ins i16mem:$dst),
                "rcl{w}\t$dst", []>, OpSize;
def RCL16mi : Ii8<0xC1, MRM2m, (outs), (ins i16mem:$dst, i8imm:$cnt),
                  "rcl{w}\t{$cnt, $dst|$dst, $cnt}", []>, OpSize;
def RCL32m1 : I<0xD1, MRM2m, (outs), (ins i32mem:$dst),
                "rcl{l}\t$dst", []>;
def RCL32mi : Ii8<0xC1, MRM2m, (outs), (ins i32mem:$dst, i8imm:$cnt),
                  "rcl{l}\t{$cnt, $dst|$dst, $cnt}", []>;
def RCL64m1 : RI<0xD1, MRM2m, (outs), (ins i64mem:$dst),
                 "rcl{q}\t$dst", []>;
def RCL64mi : RIi8<0xC1, MRM2m, (outs), (ins i64mem:$dst, i8imm:$cnt),
                   "rcl{q}\t{$cnt, $dst|$dst, $cnt}", []>;

def RCR8m1 : I<0xD0, MRM3m, (outs), (ins i8mem:$dst),
               "rcr{b}\t$dst", []>;
def RCR8mi : Ii8<0xC0, MRM3m, (outs), (ins i8mem:$dst, i8imm:$cnt),
                 "rcr{b}\t{$cnt, $dst|$dst, $cnt}", []>;
def RCR16m1 : I<0xD1, MRM3m, (outs), (ins i16mem:$dst),
                "rcr{w}\t$dst", []>, OpSize;
def RCR16mi : Ii8<0xC1, MRM3m, (outs), (ins i16mem:$dst, i8imm:$cnt),
                  "rcr{w}\t{$cnt, $dst|$dst, $cnt}", []>, OpSize;
def RCR32m1 : I<0xD1, MRM3m, (outs), (ins i32mem:$dst),
                "rcr{l}\t$dst", []>;
def RCR32mi : Ii8<0xC1, MRM3m, (outs), (ins i32mem:$dst, i8imm:$cnt),
                  "rcr{l}\t{$cnt, $dst|$dst, $cnt}", []>;
def RCR64m1 : RI<0xD1, MRM3m, (outs), (ins i64mem:$dst),
                 "rcr{q}\t$dst", []>;
def RCR64mi : RIi8<0xC1, MRM3m, (outs), (ins i64mem:$dst, i8imm:$cnt),
                   "rcr{q}\t{$cnt, $dst|$dst, $cnt}", []>;

let Uses = [CL] in {
def RCL8mCL : I<0xD2, MRM2m, (outs), (ins i8mem:$dst),
                "rcl{b}\t{%cl, $dst|$dst, CL}", []>;
def RCL16mCL : I<0xD3, MRM2m, (outs), (ins i16mem:$dst),
                 "rcl{w}\t{%cl, $dst|$dst, CL}", []>, OpSize;
def RCL32mCL : I<0xD3, MRM2m, (outs), (ins i32mem:$dst),
                 "rcl{l}\t{%cl, $dst|$dst, CL}", []>;
def RCL64mCL : RI<0xD3, MRM2m, (outs), (ins i64mem:$dst),
                  "rcl{q}\t{%cl, $dst|$dst, CL}", []>;

def RCR8mCL : I<0xD2, MRM3m, (outs), (ins i8mem:$dst),
                "rcr{b}\t{%cl, $dst|$dst, CL}", []>;
def RCR16mCL : I<0xD3, MRM3m, (outs), (ins i16mem:$dst),
                 "rcr{w}\t{%cl, $dst|$dst, CL}", []>, OpSize;
def RCR32mCL : I<0xD3, MRM3m, (outs), (ins i32mem:$dst),
                 "rcr{l}\t{%cl, $dst|$dst, CL}", []>;
def RCR64mCL : RI<0xD3, MRM3m, (outs), (ins i64mem:$dst),
                  "rcr{q}\t{%cl, $dst|$dst, CL}", []>;
}

let Constraints = "$src1 = $dst" in {
// FIXME: provide shorter instructions when imm8 == 1
let Uses = [CL] in {
def ROL8rCL  : I<0xD2, MRM0r, (outs GR8 :$dst), (ins GR8 :$src1),
                 "rol{b}\t{%cl, $dst|$dst, CL}",
                 [(set GR8:$dst, (rotl GR8:$src1, CL))]>;
def ROL16rCL : I<0xD3, MRM0r, (outs GR16:$dst), (ins GR16:$src1),
                 "rol{w}\t{%cl, $dst|$dst, CL}",
                 [(set GR16:$dst, (rotl GR16:$src1, CL))]>, OpSize;
def ROL32rCL : I<0xD3, MRM0r, (outs GR32:$dst), (ins GR32:$src1),
                 "rol{l}\t{%cl, $dst|$dst, CL}",
                 [(set GR32:$dst, (rotl GR32:$src1, CL))]>;
def ROL64rCL : RI<0xD3, MRM0r, (outs GR64:$dst), (ins GR64:$src1),
                  "rol{q}\t{%cl, $dst|$dst, %CL}",
                  [(set GR64:$dst, (rotl GR64:$src1, CL))]>;
}

def ROL8ri   : Ii8<0xC0, MRM0r, (outs GR8 :$dst), (ins GR8 :$src1, i8imm:$src2),
                   "rol{b}\t{$src2, $dst|$dst, $src2}",
                   [(set GR8:$dst, (rotl GR8:$src1, (i8 imm:$src2)))]>;
def ROL16ri  : Ii8<0xC1, MRM0r, (outs GR16:$dst), (ins GR16:$src1, i8imm:$src2),
                   "rol{w}\t{$src2, $dst|$dst, $src2}",
                   [(set GR16:$dst, (rotl GR16:$src1, (i8 imm:$src2)))]>, 
                   OpSize;
def ROL32ri  : Ii8<0xC1, MRM0r, (outs GR32:$dst), (ins GR32:$src1, i8imm:$src2),
                   "rol{l}\t{$src2, $dst|$dst, $src2}",
                   [(set GR32:$dst, (rotl GR32:$src1, (i8 imm:$src2)))]>;
def ROL64ri  : RIi8<0xC1, MRM0r, (outs GR64:$dst), 
                    (ins GR64:$src1, i8imm:$src2),
                    "rol{q}\t{$src2, $dst|$dst, $src2}",
                    [(set GR64:$dst, (rotl GR64:$src1, (i8 imm:$src2)))]>;

// Rotate by 1
def ROL8r1   : I<0xD0, MRM0r, (outs GR8 :$dst), (ins GR8 :$src1),
                 "rol{b}\t$dst",
                 [(set GR8:$dst, (rotl GR8:$src1, (i8 1)))]>;
def ROL16r1  : I<0xD1, MRM0r, (outs GR16:$dst), (ins GR16:$src1),
                 "rol{w}\t$dst",
                 [(set GR16:$dst, (rotl GR16:$src1, (i8 1)))]>, OpSize;
def ROL32r1  : I<0xD1, MRM0r, (outs GR32:$dst), (ins GR32:$src1),
                 "rol{l}\t$dst",
                 [(set GR32:$dst, (rotl GR32:$src1, (i8 1)))]>;
def ROL64r1  : RI<0xD1, MRM0r, (outs GR64:$dst), (ins GR64:$src1),
                  "rol{q}\t$dst",
                  [(set GR64:$dst, (rotl GR64:$src1, (i8 1)))]>;
} // Constraints = "$src = $dst"

let Uses = [CL] in {
def ROL8mCL  : I<0xD2, MRM0m, (outs), (ins i8mem :$dst),
                 "rol{b}\t{%cl, $dst|$dst, CL}",
                 [(store (rotl (loadi8 addr:$dst), CL), addr:$dst)]>;
def ROL16mCL : I<0xD3, MRM0m, (outs), (ins i16mem:$dst),
                 "rol{w}\t{%cl, $dst|$dst, CL}",
                 [(store (rotl (loadi16 addr:$dst), CL), addr:$dst)]>, OpSize;
def ROL32mCL : I<0xD3, MRM0m, (outs), (ins i32mem:$dst),
                 "rol{l}\t{%cl, $dst|$dst, CL}",
                 [(store (rotl (loadi32 addr:$dst), CL), addr:$dst)]>;
def ROL64mCL :  RI<0xD3, MRM0m, (outs), (ins i64mem:$dst),
                   "rol{q}\t{%cl, $dst|$dst, %CL}",
                   [(store (rotl (loadi64 addr:$dst), CL), addr:$dst)]>;
}
def ROL8mi   : Ii8<0xC0, MRM0m, (outs), (ins i8mem :$dst, i8imm:$src1),
                   "rol{b}\t{$src1, $dst|$dst, $src1}",
               [(store (rotl (loadi8 addr:$dst), (i8 imm:$src1)), addr:$dst)]>;
def ROL16mi  : Ii8<0xC1, MRM0m, (outs), (ins i16mem:$dst, i8imm:$src1),
                   "rol{w}\t{$src1, $dst|$dst, $src1}",
              [(store (rotl (loadi16 addr:$dst), (i8 imm:$src1)), addr:$dst)]>,
                   OpSize;
def ROL32mi  : Ii8<0xC1, MRM0m, (outs), (ins i32mem:$dst, i8imm:$src1),
                   "rol{l}\t{$src1, $dst|$dst, $src1}",
              [(store (rotl (loadi32 addr:$dst), (i8 imm:$src1)), addr:$dst)]>;
def ROL64mi  : RIi8<0xC1, MRM0m, (outs), (ins i64mem:$dst, i8imm:$src1),
                    "rol{q}\t{$src1, $dst|$dst, $src1}",
                [(store (rotl (loadi64 addr:$dst), (i8 imm:$src1)), addr:$dst)]>;

// Rotate by 1
def ROL8m1   : I<0xD0, MRM0m, (outs), (ins i8mem :$dst),
                 "rol{b}\t$dst",
               [(store (rotl (loadi8 addr:$dst), (i8 1)), addr:$dst)]>;
def ROL16m1  : I<0xD1, MRM0m, (outs), (ins i16mem:$dst),
                 "rol{w}\t$dst",
              [(store (rotl (loadi16 addr:$dst), (i8 1)), addr:$dst)]>,
                   OpSize;
def ROL32m1  : I<0xD1, MRM0m, (outs), (ins i32mem:$dst),
                 "rol{l}\t$dst",
              [(store (rotl (loadi32 addr:$dst), (i8 1)), addr:$dst)]>;
def ROL64m1  : RI<0xD1, MRM0m, (outs), (ins i64mem:$dst),
                 "rol{q}\t$dst",
               [(store (rotl (loadi64 addr:$dst), (i8 1)), addr:$dst)]>;

let Constraints = "$src1 = $dst" in {
let Uses = [CL] in {
def ROR8rCL  : I<0xD2, MRM1r, (outs GR8 :$dst), (ins GR8 :$src1),
                 "ror{b}\t{%cl, $dst|$dst, CL}",
                 [(set GR8:$dst, (rotr GR8:$src1, CL))]>;
def ROR16rCL : I<0xD3, MRM1r, (outs GR16:$dst), (ins GR16:$src1),
                 "ror{w}\t{%cl, $dst|$dst, CL}",
                 [(set GR16:$dst, (rotr GR16:$src1, CL))]>, OpSize;
def ROR32rCL : I<0xD3, MRM1r, (outs GR32:$dst), (ins GR32:$src1),
                 "ror{l}\t{%cl, $dst|$dst, CL}",
                 [(set GR32:$dst, (rotr GR32:$src1, CL))]>;
def ROR64rCL : RI<0xD3, MRM1r, (outs GR64:$dst), (ins GR64:$src1),
                  "ror{q}\t{%cl, $dst|$dst, %CL}",
                  [(set GR64:$dst, (rotr GR64:$src1, CL))]>;
}

def ROR8ri   : Ii8<0xC0, MRM1r, (outs GR8 :$dst), (ins GR8 :$src1, i8imm:$src2),
                   "ror{b}\t{$src2, $dst|$dst, $src2}",
                   [(set GR8:$dst, (rotr GR8:$src1, (i8 imm:$src2)))]>;
def ROR16ri  : Ii8<0xC1, MRM1r, (outs GR16:$dst), (ins GR16:$src1, i8imm:$src2),
                   "ror{w}\t{$src2, $dst|$dst, $src2}",
                   [(set GR16:$dst, (rotr GR16:$src1, (i8 imm:$src2)))]>, 
                   OpSize;
def ROR32ri  : Ii8<0xC1, MRM1r, (outs GR32:$dst), (ins GR32:$src1, i8imm:$src2),
                   "ror{l}\t{$src2, $dst|$dst, $src2}",
                   [(set GR32:$dst, (rotr GR32:$src1, (i8 imm:$src2)))]>;
def ROR64ri  : RIi8<0xC1, MRM1r, (outs GR64:$dst), 
                    (ins GR64:$src1, i8imm:$src2),
                    "ror{q}\t{$src2, $dst|$dst, $src2}",
                    [(set GR64:$dst, (rotr GR64:$src1, (i8 imm:$src2)))]>;

// Rotate by 1
def ROR8r1   : I<0xD0, MRM1r, (outs GR8 :$dst), (ins GR8 :$src1),
                 "ror{b}\t$dst",
                 [(set GR8:$dst, (rotr GR8:$src1, (i8 1)))]>;
def ROR16r1  : I<0xD1, MRM1r, (outs GR16:$dst), (ins GR16:$src1),
                 "ror{w}\t$dst",
                 [(set GR16:$dst, (rotr GR16:$src1, (i8 1)))]>, OpSize;
def ROR32r1  : I<0xD1, MRM1r, (outs GR32:$dst), (ins GR32:$src1),
                 "ror{l}\t$dst",
                 [(set GR32:$dst, (rotr GR32:$src1, (i8 1)))]>;
def ROR64r1  : RI<0xD1, MRM1r, (outs GR64:$dst), (ins GR64:$src1),
                  "ror{q}\t$dst",
                  [(set GR64:$dst, (rotr GR64:$src1, (i8 1)))]>;
} // Constraints = "$src = $dst"

let Uses = [CL] in {
def ROR8mCL  : I<0xD2, MRM1m, (outs), (ins i8mem :$dst),
                 "ror{b}\t{%cl, $dst|$dst, CL}",
                 [(store (rotr (loadi8 addr:$dst), CL), addr:$dst)]>;
def ROR16mCL : I<0xD3, MRM1m, (outs), (ins i16mem:$dst),
                 "ror{w}\t{%cl, $dst|$dst, CL}",
                 [(store (rotr (loadi16 addr:$dst), CL), addr:$dst)]>, OpSize;
def ROR32mCL : I<0xD3, MRM1m, (outs), (ins i32mem:$dst), 
                 "ror{l}\t{%cl, $dst|$dst, CL}",
                 [(store (rotr (loadi32 addr:$dst), CL), addr:$dst)]>;
def ROR64mCL : RI<0xD3, MRM1m, (outs), (ins i64mem:$dst), 
                  "ror{q}\t{%cl, $dst|$dst, %CL}",
                  [(store (rotr (loadi64 addr:$dst), CL), addr:$dst)]>;
}
def ROR8mi   : Ii8<0xC0, MRM1m, (outs), (ins i8mem :$dst, i8imm:$src),
                   "ror{b}\t{$src, $dst|$dst, $src}",
               [(store (rotr (loadi8 addr:$dst), (i8 imm:$src)), addr:$dst)]>;
def ROR16mi  : Ii8<0xC1, MRM1m, (outs), (ins i16mem:$dst, i8imm:$src),
                   "ror{w}\t{$src, $dst|$dst, $src}",
              [(store (rotr (loadi16 addr:$dst), (i8 imm:$src)), addr:$dst)]>,
                   OpSize;
def ROR32mi  : Ii8<0xC1, MRM1m, (outs), (ins i32mem:$dst, i8imm:$src),
                   "ror{l}\t{$src, $dst|$dst, $src}",
              [(store (rotr (loadi32 addr:$dst), (i8 imm:$src)), addr:$dst)]>;
def ROR64mi  : RIi8<0xC1, MRM1m, (outs), (ins i64mem:$dst, i8imm:$src),
                    "ror{q}\t{$src, $dst|$dst, $src}",
                [(store (rotr (loadi64 addr:$dst), (i8 imm:$src)), addr:$dst)]>;

// Rotate by 1
def ROR8m1   : I<0xD0, MRM1m, (outs), (ins i8mem :$dst),
                 "ror{b}\t$dst",
               [(store (rotr (loadi8 addr:$dst), (i8 1)), addr:$dst)]>;
def ROR16m1  : I<0xD1, MRM1m, (outs), (ins i16mem:$dst),
                 "ror{w}\t$dst",
              [(store (rotr (loadi16 addr:$dst), (i8 1)), addr:$dst)]>,
                   OpSize;
def ROR32m1  : I<0xD1, MRM1m, (outs), (ins i32mem:$dst),
                 "ror{l}\t$dst",
              [(store (rotr (loadi32 addr:$dst), (i8 1)), addr:$dst)]>;
def ROR64m1  : RI<0xD1, MRM1m, (outs), (ins i64mem:$dst),
                 "ror{q}\t$dst",
               [(store (rotr (loadi64 addr:$dst), (i8 1)), addr:$dst)]>;


//===----------------------------------------------------------------------===//
// Double shift instructions (generalizations of rotate)
//===----------------------------------------------------------------------===//

let Constraints = "$src1 = $dst" in {

let Uses = [CL] in {
def SHLD16rrCL : I<0xA5, MRMDestReg, (outs GR16:$dst), 
                   (ins GR16:$src1, GR16:$src2),
                   "shld{w}\t{%cl, $src2, $dst|$dst, $src2, CL}",
                   [(set GR16:$dst, (X86shld GR16:$src1, GR16:$src2, CL))]>,
                   TB, OpSize;
def SHRD16rrCL : I<0xAD, MRMDestReg, (outs GR16:$dst), 
                   (ins GR16:$src1, GR16:$src2),
                   "shrd{w}\t{%cl, $src2, $dst|$dst, $src2, CL}",
                   [(set GR16:$dst, (X86shrd GR16:$src1, GR16:$src2, CL))]>,
                   TB, OpSize;
def SHLD32rrCL : I<0xA5, MRMDestReg, (outs GR32:$dst), 
                   (ins GR32:$src1, GR32:$src2),
                   "shld{l}\t{%cl, $src2, $dst|$dst, $src2, CL}",
                   [(set GR32:$dst, (X86shld GR32:$src1, GR32:$src2, CL))]>, TB;
def SHRD32rrCL : I<0xAD, MRMDestReg, (outs GR32:$dst),
                   (ins GR32:$src1, GR32:$src2),
                   "shrd{l}\t{%cl, $src2, $dst|$dst, $src2, CL}",
                   [(set GR32:$dst, (X86shrd GR32:$src1, GR32:$src2, CL))]>, TB;
def SHLD64rrCL : RI<0xA5, MRMDestReg, (outs GR64:$dst), 
                    (ins GR64:$src1, GR64:$src2),
                    "shld{q}\t{%cl, $src2, $dst|$dst, $src2, %CL}",
                    [(set GR64:$dst, (X86shld GR64:$src1, GR64:$src2, CL))]>, 
                    TB;
def SHRD64rrCL : RI<0xAD, MRMDestReg, (outs GR64:$dst), 
                    (ins GR64:$src1, GR64:$src2),
                    "shrd{q}\t{%cl, $src2, $dst|$dst, $src2, %CL}",
                    [(set GR64:$dst, (X86shrd GR64:$src1, GR64:$src2, CL))]>, 
                    TB;
}

let isCommutable = 1 in {  // These instructions commute to each other.
def SHLD16rri8 : Ii8<0xA4, MRMDestReg,
                     (outs GR16:$dst), 
                     (ins GR16:$src1, GR16:$src2, i8imm:$src3),
                     "shld{w}\t{$src3, $src2, $dst|$dst, $src2, $src3}",
                     [(set GR16:$dst, (X86shld GR16:$src1, GR16:$src2,
                                      (i8 imm:$src3)))]>,
                     TB, OpSize;
def SHRD16rri8 : Ii8<0xAC, MRMDestReg,
                     (outs GR16:$dst), 
                     (ins GR16:$src1, GR16:$src2, i8imm:$src3),
                     "shrd{w}\t{$src3, $src2, $dst|$dst, $src2, $src3}",
                     [(set GR16:$dst, (X86shrd GR16:$src1, GR16:$src2,
                                      (i8 imm:$src3)))]>,
                     TB, OpSize;
def SHLD32rri8 : Ii8<0xA4, MRMDestReg,
                     (outs GR32:$dst), 
                     (ins GR32:$src1, GR32:$src2, i8imm:$src3),
                     "shld{l}\t{$src3, $src2, $dst|$dst, $src2, $src3}",
                     [(set GR32:$dst, (X86shld GR32:$src1, GR32:$src2,
                                      (i8 imm:$src3)))]>,
                 TB;
def SHRD32rri8 : Ii8<0xAC, MRMDestReg,
                     (outs GR32:$dst), 
                     (ins GR32:$src1, GR32:$src2, i8imm:$src3),
                     "shrd{l}\t{$src3, $src2, $dst|$dst, $src2, $src3}",
                     [(set GR32:$dst, (X86shrd GR32:$src1, GR32:$src2,
                                      (i8 imm:$src3)))]>,
                 TB;
def SHLD64rri8 : RIi8<0xA4, MRMDestReg,
                      (outs GR64:$dst), 
                      (ins GR64:$src1, GR64:$src2, i8imm:$src3),
                      "shld{q}\t{$src3, $src2, $dst|$dst, $src2, $src3}",
                      [(set GR64:$dst, (X86shld GR64:$src1, GR64:$src2,
                                       (i8 imm:$src3)))]>,
                 TB;
def SHRD64rri8 : RIi8<0xAC, MRMDestReg,
                      (outs GR64:$dst), 
                      (ins GR64:$src1, GR64:$src2, i8imm:$src3),
                      "shrd{q}\t{$src3, $src2, $dst|$dst, $src2, $src3}",
                      [(set GR64:$dst, (X86shrd GR64:$src1, GR64:$src2,
                                       (i8 imm:$src3)))]>,
                 TB;
}
} // Constraints = "$src = $dst"

let Uses = [CL] in {
def SHLD16mrCL : I<0xA5, MRMDestMem, (outs), (ins i16mem:$dst, GR16:$src2),
                   "shld{w}\t{%cl, $src2, $dst|$dst, $src2, CL}",
                   [(store (X86shld (loadi16 addr:$dst), GR16:$src2, CL),
                     addr:$dst)]>, TB, OpSize;
def SHRD16mrCL : I<0xAD, MRMDestMem, (outs), (ins i16mem:$dst, GR16:$src2),
                  "shrd{w}\t{%cl, $src2, $dst|$dst, $src2, CL}",
                  [(store (X86shrd (loadi16 addr:$dst), GR16:$src2, CL),
                    addr:$dst)]>, TB, OpSize;

def SHLD32mrCL : I<0xA5, MRMDestMem, (outs), (ins i32mem:$dst, GR32:$src2),
                   "shld{l}\t{%cl, $src2, $dst|$dst, $src2, CL}",
                   [(store (X86shld (loadi32 addr:$dst), GR32:$src2, CL),
                     addr:$dst)]>, TB;
def SHRD32mrCL : I<0xAD, MRMDestMem, (outs), (ins i32mem:$dst, GR32:$src2),
                  "shrd{l}\t{%cl, $src2, $dst|$dst, $src2, CL}",
                  [(store (X86shrd (loadi32 addr:$dst), GR32:$src2, CL),
                    addr:$dst)]>, TB;
                    
def SHLD64mrCL : RI<0xA5, MRMDestMem, (outs), (ins i64mem:$dst, GR64:$src2),
                    "shld{q}\t{%cl, $src2, $dst|$dst, $src2, %CL}",
                    [(store (X86shld (loadi64 addr:$dst), GR64:$src2, CL),
                      addr:$dst)]>, TB;
def SHRD64mrCL : RI<0xAD, MRMDestMem, (outs), (ins i64mem:$dst, GR64:$src2),
                    "shrd{q}\t{%cl, $src2, $dst|$dst, $src2, %CL}",
                    [(store (X86shrd (loadi64 addr:$dst), GR64:$src2, CL),
                      addr:$dst)]>, TB;
}

def SHLD16mri8 : Ii8<0xA4, MRMDestMem,
                    (outs), (ins i16mem:$dst, GR16:$src2, i8imm:$src3),
                    "shld{w}\t{$src3, $src2, $dst|$dst, $src2, $src3}",
                    [(store (X86shld (loadi16 addr:$dst), GR16:$src2,
                                      (i8 imm:$src3)), addr:$dst)]>,
                    TB, OpSize;
def SHRD16mri8 : Ii8<0xAC, MRMDestMem, 
                     (outs), (ins i16mem:$dst, GR16:$src2, i8imm:$src3),
                     "shrd{w}\t{$src3, $src2, $dst|$dst, $src2, $src3}",
                    [(store (X86shrd (loadi16 addr:$dst), GR16:$src2,
                                      (i8 imm:$src3)), addr:$dst)]>,
                     TB, OpSize;

def SHLD32mri8 : Ii8<0xA4, MRMDestMem,
                    (outs), (ins i32mem:$dst, GR32:$src2, i8imm:$src3),
                    "shld{l}\t{$src3, $src2, $dst|$dst, $src2, $src3}",
                    [(store (X86shld (loadi32 addr:$dst), GR32:$src2,
                                      (i8 imm:$src3)), addr:$dst)]>,
                    TB;
def SHRD32mri8 : Ii8<0xAC, MRMDestMem, 
                     (outs), (ins i32mem:$dst, GR32:$src2, i8imm:$src3),
                     "shrd{l}\t{$src3, $src2, $dst|$dst, $src2, $src3}",
                     [(store (X86shrd (loadi32 addr:$dst), GR32:$src2,
                                       (i8 imm:$src3)), addr:$dst)]>,
                     TB;

def SHLD64mri8 : RIi8<0xA4, MRMDestMem,
                      (outs), (ins i64mem:$dst, GR64:$src2, i8imm:$src3),
                      "shld{q}\t{$src3, $src2, $dst|$dst, $src2, $src3}",
                      [(store (X86shld (loadi64 addr:$dst), GR64:$src2,
                                       (i8 imm:$src3)), addr:$dst)]>,
                 TB;
def SHRD64mri8 : RIi8<0xAC, MRMDestMem, 
                      (outs), (ins i64mem:$dst, GR64:$src2, i8imm:$src3),
                      "shrd{q}\t{$src3, $src2, $dst|$dst, $src2, $src3}",
                      [(store (X86shrd (loadi64 addr:$dst), GR64:$src2,
                                       (i8 imm:$src3)), addr:$dst)]>,
                 TB;

} // Defs = [EFLAGS]