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ARM binary encoding information for RSB and RSC instructions.

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llvm-svn: 116604
This commit is contained in:
Jim Grosbach 2010-10-15 18:42:41 +00:00
parent 440b0e6b34
commit 785858b2ba
1 changed files with 104 additions and 44 deletions
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148
lib/Target/ARM/ARMInstrInfo.td
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@ -1830,81 +1830,141 @@ defm ADCS : AI1_adde_sube_s_irs<0b0101, "adcs",
defm SBCS : AI1_adde_sube_s_irs<0b0110, "sbcs",
BinOpFrag<(sube_live_carry node:$LHS, node:$RHS) >>;
def RSBri : AsI1<0b0011, (outs GPR:$dst), (ins GPR:$a, so_imm:$b), DPFrm,
IIC_iALUi, "rsb", "\t$dst, $a, $b",
[(set GPR:$dst, (sub so_imm:$b, GPR:$a))]> {
let Inst{25} = 1;
def RSBri : AsI1<0b0011, (outs GPR:$Rd), (ins GPR:$Rn, so_imm:$imm), DPFrm,
IIC_iALUi, "rsb", "\t$Rd, $Rn, $imm",
[(set GPR:$Rd, (sub so_imm:$imm, GPR:$Rn))]> {
bits<4> Rd;
bits<4> Rn;
bits<12> imm;
let Inst{25} = 1;
let Inst{15-12} = Rd;
let Inst{19-16} = Rn;
let Inst{11-0} = imm;
}
// The reg/reg form is only defined for the disassembler; for codegen it is
// equivalent to SUBrr.
def RSBrr : AsI1<0b0011, (outs GPR:$dst), (ins GPR:$a, GPR:$b), DPFrm,
IIC_iALUr, "rsb", "\t$dst, $a, $b",
def RSBrr : AsI1<0b0011, (outs GPR:$Rd), (ins GPR:$Rn, GPR:$Rm), DPFrm,
IIC_iALUr, "rsb", "\t$Rd, $Rn, $Rm",
[/* For disassembly only; pattern left blank */]> {
let Inst{25} = 0;
let Inst{11-4} = 0b00000000;
bits<4> Rd;
bits<4> Rn;
bits<4> Rm;
let Inst{11-4} = 0b00000000;
let Inst{25} = 0;
let Inst{3-0} = Rm;
let Inst{15-12} = Rd;
let Inst{19-16} = Rn;
}
def RSBrs : AsI1<0b0011, (outs GPR:$dst), (ins GPR:$a, so_reg:$b), DPSoRegFrm,
IIC_iALUsr, "rsb", "\t$dst, $a, $b",
[(set GPR:$dst, (sub so_reg:$b, GPR:$a))]> {
let Inst{25} = 0;
def RSBrs : AsI1<0b0011, (outs GPR:$Rd), (ins GPR:$Rn, so_reg:$shift),
DPSoRegFrm, IIC_iALUsr, "rsb", "\t$Rd, $Rn, $shift",
[(set GPR:$Rd, (sub so_reg:$shift, GPR:$Rn))]> {
bits<4> Rd;
bits<4> Rn;
bits<12> shift;
let Inst{25} = 0;
let Inst{11-0} = shift;
let Inst{15-12} = Rd;
let Inst{19-16} = Rn;
}
// RSB with 's' bit set.
let Defs = [CPSR] in {
def RSBSri : AI1<0b0011, (outs GPR:$dst), (ins GPR:$a, so_imm:$b), DPFrm,
IIC_iALUi, "rsbs", "\t$dst, $a, $b",
[(set GPR:$dst, (subc so_imm:$b, GPR:$a))]> {
let Inst{20} = 1;
let Inst{25} = 1;
def RSBSri : AI1<0b0011, (outs GPR:$Rd), (ins GPR:$Rn, so_imm:$imm), DPFrm,
IIC_iALUi, "rsbs", "\t$Rd, $Rn, $imm",
[(set GPR:$Rd, (subc so_imm:$imm, GPR:$Rn))]> {
bits<4> Rd;
bits<4> Rn;
bits<12> imm;
let Inst{25} = 1;
let Inst{20} = 1;
let Inst{15-12} = Rd;
let Inst{19-16} = Rn;
let Inst{11-0} = imm;
}
def RSBSrs : AI1<0b0011, (outs GPR:$dst), (ins GPR:$a, so_reg:$b), DPSoRegFrm,
IIC_iALUsr, "rsbs", "\t$dst, $a, $b",
[(set GPR:$dst, (subc so_reg:$b, GPR:$a))]> {
let Inst{20} = 1;
let Inst{25} = 0;
def RSBSrs : AI1<0b0011, (outs GPR:$Rd), (ins GPR:$Rn, so_reg:$shift),
DPSoRegFrm, IIC_iALUsr, "rsbs", "\t$Rd, $Rn, $shift",
[(set GPR:$Rd, (subc so_reg:$shift, GPR:$Rn))]> {
bits<4> Rd;
bits<4> Rn;
bits<12> shift;
let Inst{25} = 0;
let Inst{20} = 1;
let Inst{11-0} = shift;
let Inst{15-12} = Rd;
let Inst{19-16} = Rn;
}
}
let Uses = [CPSR] in {
def RSCri : AsI1<0b0111, (outs GPR:$dst), (ins GPR:$a, so_imm:$b),
DPFrm, IIC_iALUi, "rsc", "\t$dst, $a, $b",
[(set GPR:$dst, (sube_dead_carry so_imm:$b, GPR:$a))]>,
def RSCri : AsI1<0b0111, (outs GPR:$Rd), (ins GPR:$Rn, so_imm:$imm),
DPFrm, IIC_iALUi, "rsc", "\t$Rd, $Rn, $imm",
[(set GPR:$Rd, (sube_dead_carry so_imm:$imm, GPR:$Rn))]>,
Requires<[IsARM]> {
let Inst{25} = 1;
bits<4> Rd;
bits<4> Rn;
bits<12> imm;
let Inst{25} = 1;
let Inst{15-12} = Rd;
let Inst{19-16} = Rn;
let Inst{11-0} = imm;
}
// The reg/reg form is only defined for the disassembler; for codegen it is
// equivalent to SUBrr.
def RSCrr : AsI1<0b0111, (outs GPR:$dst), (ins GPR:$a, GPR:$b),
DPFrm, IIC_iALUr, "rsc", "\t$dst, $a, $b",
def RSCrr : AsI1<0b0111, (outs GPR:$Rd), (ins GPR:$Rn, GPR:$Rm),
DPFrm, IIC_iALUr, "rsc", "\t$Rd, $Rn, $Rm",
[/* For disassembly only; pattern left blank */]> {
let Inst{25} = 0;
let Inst{11-4} = 0b00000000;
bits<4> Rd;
bits<4> Rn;
bits<4> Rm;
let Inst{11-4} = 0b00000000;
let Inst{25} = 0;
let Inst{3-0} = Rm;
let Inst{15-12} = Rd;
let Inst{19-16} = Rn;
}
def RSCrs : AsI1<0b0111, (outs GPR:$dst), (ins GPR:$a, so_reg:$b),
DPSoRegFrm, IIC_iALUsr, "rsc", "\t$dst, $a, $b",
[(set GPR:$dst, (sube_dead_carry so_reg:$b, GPR:$a))]>,
def RSCrs : AsI1<0b0111, (outs GPR:$Rd), (ins GPR:$Rn, so_reg:$shift),
DPSoRegFrm, IIC_iALUsr, "rsc", "\t$Rd, $Rn, $shift",
[(set GPR:$Rd, (sube_dead_carry so_reg:$shift, GPR:$Rn))]>,
Requires<[IsARM]> {
let Inst{25} = 0;
bits<4> Rd;
bits<4> Rn;
bits<12> shift;
let Inst{25} = 0;
let Inst{11-0} = shift;
let Inst{15-12} = Rd;
let Inst{19-16} = Rn;
}
}
// FIXME: Allow these to be predicated.
let Defs = [CPSR], Uses = [CPSR] in {
def RSCSri : AXI1<0b0111, (outs GPR:$dst), (ins GPR:$a, so_imm:$b),
DPFrm, IIC_iALUi, "rscs\t$dst, $a, $b",
[(set GPR:$dst, (sube_dead_carry so_imm:$b, GPR:$a))]>,
def RSCSri : AXI1<0b0111, (outs GPR:$Rd), (ins GPR:$Rn, so_imm:$imm),
DPFrm, IIC_iALUi, "rscs\t$Rd, $Rn, $imm",
[(set GPR:$Rd, (sube_dead_carry so_imm:$imm, GPR:$Rn))]>,
Requires<[IsARM]> {
let Inst{20} = 1;
let Inst{25} = 1;
bits<4> Rd;
bits<4> Rn;
bits<12> imm;
let Inst{25} = 1;
let Inst{20} = 1;
let Inst{15-12} = Rd;
let Inst{19-16} = Rn;
let Inst{11-0} = imm;
}
def RSCSrs : AXI1<0b0111, (outs GPR:$dst), (ins GPR:$a, so_reg:$b),
DPSoRegFrm, IIC_iALUsr, "rscs\t$dst, $a, $b",
[(set GPR:$dst, (sube_dead_carry so_reg:$b, GPR:$a))]>,
def RSCSrs : AXI1<0b0111, (outs GPR:$Rd), (ins GPR:$Rn, so_reg:$shift),
DPSoRegFrm, IIC_iALUsr, "rscs\t$Rd, $Rn, $shift",
[(set GPR:$Rd, (sube_dead_carry so_reg:$shift, GPR:$Rn))]>,
Requires<[IsARM]> {
let Inst{20} = 1;
let Inst{25} = 0;
bits<4> Rd;
bits<4> Rn;
bits<12> shift;
let Inst{25} = 0;
let Inst{20} = 1;
let Inst{11-0} = shift;
let Inst{15-12} = Rd;
let Inst{19-16} = Rn;
}
}