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ARM binary encoding for some of the multiply instructions.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117080 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2010-10-21 22:52:30 +00:00
parent b13214f9d1
commit f50af8b5b8
1 changed files with 66 additions and 24 deletions
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90
lib/Target/ARM/ARMInstrInfo.td
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@ -2248,46 +2248,88 @@ def : ARMPat<(and GPR:$src, so_imm_not:$imm),
//===----------------------------------------------------------------------===//
// Multiply Instructions.
//
class AsMul1I32<bits<7> opcod, dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: AsMul1I<opcod, oops, iops, itin, opc, asm, pattern> {
bits<4> Rd;
bits<4> Rm;
bits<4> Rn;
let Inst{19-16} = Rd;
let Inst{11-8} = Rm;
let Inst{3-0} = Rn;
}
class AsMul1I64<bits<7> opcod, dag oops, dag iops, InstrItinClass itin,
string opc, string asm, list<dag> pattern>
: AsMul1I<opcod, oops, iops, itin, opc, asm, pattern> {
bits<4> RdLo;
bits<4> RdHi;
bits<4> Rm;
bits<4> Rn;
let Inst{19-16} = RdLo;
let Inst{15-12} = RdHi;
let Inst{11-8} = Rm;
let Inst{3-0} = Rn;
}
let isCommutable = 1 in
def MUL : AsMul1I<0b0000000, (outs GPR:$dst), (ins GPR:$a, GPR:$b),
IIC_iMUL32, "mul", "\t$dst, $a, $b",
[(set GPR:$dst, (mul GPR:$a, GPR:$b))]>;
def MUL : AsMul1I32<0b0000000, (outs GPR:$Rd), (ins GPR:$Rn, GPR:$Rm),
IIC_iMUL32, "mul", "\t$Rd, $Rn, $Rm",
[(set GPR:$Rd, (mul GPR:$Rn, GPR:$Rm))]>;
def MLA : AsMul1I<0b0000001, (outs GPR:$dst), (ins GPR:$a, GPR:$b, GPR:$c),
IIC_iMAC32, "mla", "\t$dst, $a, $b, $c",
[(set GPR:$dst, (add (mul GPR:$a, GPR:$b), GPR:$c))]>;
def MLA : AsMul1I32<0b0000001, (outs GPR:$Rd), (ins GPR:$Rn, GPR:$Rm, GPR:$Ra),
IIC_iMAC32, "mla", "\t$Rd, $Rn, $Rm, $Ra",
[(set GPR:$Rd, (add (mul GPR:$Rn, GPR:$Rm), GPR:$Ra))]> {
bits<4> Ra;
let Inst{15-12} = Ra;
}
def MLS : AMul1I<0b0000011, (outs GPR:$dst), (ins GPR:$a, GPR:$b, GPR:$c),
def MLS : AMul1I<0b0000011, (outs GPR:$dst), (ins GPR:$a, GPR:$b, GPR:$c),
IIC_iMAC32, "mls", "\t$dst, $a, $b, $c",
[(set GPR:$dst, (sub GPR:$c, (mul GPR:$a, GPR:$b)))]>,
Requires<[IsARM, HasV6T2]>;
Requires<[IsARM, HasV6T2]> {
bits<4> Rd;
bits<4> Rm;
bits<4> Rn;
let Inst{19-16} = Rd;
let Inst{11-8} = Rm;
let Inst{3-0} = Rn;
}
// Extra precision multiplies with low / high results
let neverHasSideEffects = 1 in {
let isCommutable = 1 in {
def SMULL : AsMul1I<0b0000110, (outs GPR:$ldst, GPR:$hdst),
(ins GPR:$a, GPR:$b), IIC_iMUL64,
"smull", "\t$ldst, $hdst, $a, $b", []>;
def SMULL : AsMul1I64<0b0000110, (outs GPR:$RdLo, GPR:$RdHi),
(ins GPR:$Rn, GPR:$Rm), IIC_iMUL64,
"smull", "\t$RdLo, $RdHi, $Rn, $Rm", []>;
def UMULL : AsMul1I<0b0000100, (outs GPR:$ldst, GPR:$hdst),
(ins GPR:$a, GPR:$b), IIC_iMUL64,
"umull", "\t$ldst, $hdst, $a, $b", []>;
def UMULL : AsMul1I64<0b0000100, (outs GPR:$RdLo, GPR:$RdHi),
(ins GPR:$Rn, GPR:$Rm), IIC_iMUL64,
"umull", "\t$RdLo, $RdHi, $Rn, $Rm", []>;
}
// Multiply + accumulate
def SMLAL : AsMul1I<0b0000111, (outs GPR:$ldst, GPR:$hdst),
(ins GPR:$a, GPR:$b), IIC_iMAC64,
"smlal", "\t$ldst, $hdst, $a, $b", []>;
def SMLAL : AsMul1I64<0b0000111, (outs GPR:$RdLo, GPR:$RdHi),
(ins GPR:$Rn, GPR:$Rm), IIC_iMAC64,
"smlal", "\t$RdLo, $RdHi, $Rn, $Rm", []>;
def UMLAL : AsMul1I<0b0000101, (outs GPR:$ldst, GPR:$hdst),
(ins GPR:$a, GPR:$b), IIC_iMAC64,
"umlal", "\t$ldst, $hdst, $a, $b", []>;
def UMLAL : AsMul1I64<0b0000101, (outs GPR:$RdLo, GPR:$RdHi),
(ins GPR:$Rn, GPR:$Rm), IIC_iMAC64,
"umlal", "\t$RdLo, $RdHi, $Rn, $Rm", []>;
def UMAAL : AMul1I <0b0000010, (outs GPR:$ldst, GPR:$hdst),
(ins GPR:$a, GPR:$b), IIC_iMAC64,
"umaal", "\t$ldst, $hdst, $a, $b", []>,
Requires<[IsARM, HasV6]>;
def UMAAL : AMul1I <0b0000010, (outs GPR:$RdLo, GPR:$RdHi),
(ins GPR:$Rn, GPR:$Rm), IIC_iMAC64,
"umaal", "\t$RdLo, $RdHi, $Rn, $Rm", []>,
Requires<[IsARM, HasV6]> {
bits<4> RdLo;
bits<4> RdHi;
bits<4> Rm;
bits<4> Rn;
let Inst{19-16} = RdLo;
let Inst{15-12} = RdHi;
let Inst{11-8} = Rm;
let Inst{3-0} = Rn;
}
} // neverHasSideEffects
// Most significant word multiply