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Thumb2 ADD/SUB can take SP as a destination register.

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It's documented as a separate instruction to line up with the Thumb1
encodings, for which it really is a distinct instruction encoding.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141020 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2011-10-03 20:51:59 +00:00
parent 2ad766851d
commit b95ed6ec46
1 changed files with 18 additions and 18 deletions
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36
lib/Target/ARM/ARMInstrThumb2.td
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@ -639,9 +639,9 @@ multiclass T2I_bin_ii12rs<bits<3> op23_21, string opc, PatFrag opnode,
// in particular for taking the address of a local.
let isReMaterializable = 1 in {
def ri : T2sTwoRegImm<
(outs rGPR:$Rd), (ins GPRnopc:$Rn, t2_so_imm:$imm), IIC_iALUi,
opc, ".w\t$Rd, $Rn, $imm",
[(set rGPR:$Rd, (opnode GPRnopc:$Rn, t2_so_imm:$imm))]> {
(outs GPRnopc:$Rd), (ins GPRnopc:$Rn, t2_so_imm:$imm), IIC_iALUi,
opc, ".w\t$Rd, $Rn, $imm",
[(set GPRnopc:$Rd, (opnode GPRnopc:$Rn, t2_so_imm:$imm))]> {
let Inst{31-27} = 0b11110;
let Inst{25} = 0;
let Inst{24} = 1;
@ -651,9 +651,9 @@ multiclass T2I_bin_ii12rs<bits<3> op23_21, string opc, PatFrag opnode,
}
// 12-bit imm
def ri12 : T2I<
(outs rGPR:$Rd), (ins GPR:$Rn, imm0_4095:$imm), IIC_iALUi,
(outs GPRnopc:$Rd), (ins GPR:$Rn, imm0_4095:$imm), IIC_iALUi,
!strconcat(opc, "w"), "\t$Rd, $Rn, $imm",
[(set rGPR:$Rd, (opnode GPR:$Rn, imm0_4095:$imm))]> {
[(set GPRnopc:$Rd, (opnode GPR:$Rn, imm0_4095:$imm))]> {
bits<4> Rd;
bits<4> Rn;
bits<12> imm;
@ -669,9 +669,9 @@ multiclass T2I_bin_ii12rs<bits<3> op23_21, string opc, PatFrag opnode,
let Inst{7-0} = imm{7-0};
}
// register
def rr : T2sThreeReg<(outs rGPR:$Rd), (ins GPRnopc:$Rn, rGPR:$Rm), IIC_iALUr,
opc, ".w\t$Rd, $Rn, $Rm",
[(set rGPR:$Rd, (opnode GPRnopc:$Rn, rGPR:$Rm))]> {
def rr : T2sThreeReg<(outs GPRnopc:$Rd), (ins GPRnopc:$Rn, rGPR:$Rm),
IIC_iALUr, opc, ".w\t$Rd, $Rn, $Rm",
[(set GPRnopc:$Rd, (opnode GPRnopc:$Rn, rGPR:$Rm))]> {
let isCommutable = Commutable;
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b01;
@ -683,9 +683,9 @@ multiclass T2I_bin_ii12rs<bits<3> op23_21, string opc, PatFrag opnode,
}
// shifted register
def rs : T2sTwoRegShiftedReg<
(outs rGPR:$Rd), (ins GPRnopc:$Rn, t2_so_reg:$ShiftedRm),
(outs GPRnopc:$Rd), (ins GPRnopc:$Rn, t2_so_reg:$ShiftedRm),
IIC_iALUsi, opc, ".w\t$Rd, $Rn, $ShiftedRm",
[(set rGPR:$Rd, (opnode GPRnopc:$Rn, t2_so_reg:$ShiftedRm))]> {
[(set GPRnopc:$Rd, (opnode GPRnopc:$Rn, t2_so_reg:$ShiftedRm))]> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b01;
let Inst{24} = 1;
@ -3848,24 +3848,24 @@ def : t2InstAlias<"sbc${s}${p} $Rd, $Rn, $ShiftedRm",
// Aliases for ADD without the ".w" optional width specifier.
def : t2InstAlias<"add${s}${p} $Rd, $Rn, $imm",
(t2ADDri rGPR:$Rd, GPRnopc:$Rn, t2_so_imm:$imm, pred:$p, cc_out:$s)>;
(t2ADDri GPRnopc:$Rd, GPRnopc:$Rn, t2_so_imm:$imm, pred:$p, cc_out:$s)>;
def : t2InstAlias<"add${p} $Rd, $Rn, $imm",
(t2ADDri12 rGPR:$Rd, GPR:$Rn, imm0_4095:$imm, pred:$p)>;
(t2ADDri12 GPRnopc:$Rd, GPR:$Rn, imm0_4095:$imm, pred:$p)>;
def : t2InstAlias<"add${s}${p} $Rd, $Rn, $Rm",
(t2ADDrr rGPR:$Rd, GPRnopc:$Rn, rGPR:$Rm, pred:$p, cc_out:$s)>;
(t2ADDrr GPRnopc:$Rd, GPRnopc:$Rn, rGPR:$Rm, pred:$p, cc_out:$s)>;
def : t2InstAlias<"add${s}${p} $Rd, $Rn, $ShiftedRm",
(t2ADDrs rGPR:$Rd, GPRnopc:$Rn, t2_so_reg:$ShiftedRm,
(t2ADDrs GPRnopc:$Rd, GPRnopc:$Rn, t2_so_reg:$ShiftedRm,
pred:$p, cc_out:$s)>;
// Aliases for SUB without the ".w" optional width specifier.
def : t2InstAlias<"sub${s}${p} $Rd, $Rn, $imm",
(t2SUBri rGPR:$Rd, GPRnopc:$Rn, t2_so_imm:$imm, pred:$p, cc_out:$s)>;
(t2SUBri GPRnopc:$Rd, GPRnopc:$Rn, t2_so_imm:$imm, pred:$p, cc_out:$s)>;
def : t2InstAlias<"sub${p} $Rd, $Rn, $imm",
(t2SUBri12 rGPR:$Rd, GPR:$Rn, imm0_4095:$imm, pred:$p)>;
(t2SUBri12 GPRnopc:$Rd, GPR:$Rn, imm0_4095:$imm, pred:$p)>;
def : t2InstAlias<"sub${s}${p} $Rd, $Rn, $Rm",
(t2SUBrr rGPR:$Rd, GPRnopc:$Rn, rGPR:$Rm, pred:$p, cc_out:$s)>;
(t2SUBrr GPRnopc:$Rd, GPRnopc:$Rn, rGPR:$Rm, pred:$p, cc_out:$s)>;
def : t2InstAlias<"sub${s}${p} $Rd, $Rn, $ShiftedRm",
(t2SUBrs rGPR:$Rd, GPRnopc:$Rn, t2_so_reg:$ShiftedRm,
(t2SUBrs GPRnopc:$Rd, GPRnopc:$Rn, t2_so_reg:$ShiftedRm,
pred:$p, cc_out:$s)>;
// Alias for compares without the ".w" optional width specifier.