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Clean up the add/sub w/ SP source reg instructions in Thumb2 a bit. Add a FIXME

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for more thorough cleanup.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121315 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2010-12-08 23:30:19 +00:00
parent 20e0fa698d
commit 60fc2ed2bb
1 changed files with 13 additions and 11 deletions
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24
lib/Target/ARM/ARMInstrThumb2.td
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@ -1154,27 +1154,30 @@ def t2LEApcrelJT : T2PCOneRegImm<(outs rGPR:$Rd),
let Inst{15} = 0;
}
// FIXME: None of these add/sub SP special instructions should be necessary
// at all for thumb2 since they use the same encodings as the generic
// add/sub instructions. In thumb1 we need them since they have dedicated
// encodings. At the least, they should be pseudo instructions.
// ADD r, sp, {so_imm|i12}
def t2ADDrSPi : T2sTwoRegImm<(outs GPR:$Rd), (ins GPR:$sp, t2_so_imm:$imm),
IIC_iALUi, "add", ".w\t$Rd, $sp, $imm", []> {
def t2ADDrSPi : T2sTwoRegImm<(outs GPR:$Rd), (ins GPR:$Rn, t2_so_imm:$imm),
IIC_iALUi, "add", ".w\t$Rd, $Rn, $imm", []> {
let Inst{31-27} = 0b11110;
let Inst{25} = 0;
let Inst{24-21} = 0b1000;
let Inst{19-16} = 0b1101; // Rn = sp
let Inst{15} = 0;
}
def t2ADDrSPi12 : T2TwoRegImm<(outs GPR:$Rd), (ins GPR:$Rn, imm0_4095:$imm),
IIC_iALUi, "addw", "\t$Rd, $Rn, $imm", []> {
let Inst{31-27} = 0b11110;
let Inst{25-20} = 0b100000;
let Inst{19-16} = 0b1101; // Rn = sp
let Inst{15} = 0;
}
// ADD r, sp, so_reg
def t2ADDrSPs : T2sTwoRegShiftedReg<
(outs GPR:$Rd), (ins GPR:$sp, t2_so_reg:$ShiftedRm),
IIC_iALUsi, "add", ".w\t$Rd, $sp, $ShiftedRm", []> {
(outs GPR:$Rd), (ins GPR:$Rn, t2_so_reg:$ShiftedRm),
IIC_iALUsi, "add", ".w\t$Rd, $Rn, $ShiftedRm", []> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b01;
let Inst{24-21} = 0b1000;
@ -1182,12 +1185,11 @@ def t2ADDrSPs : T2sTwoRegShiftedReg<
}
// SUB r, sp, {so_imm|i12}
def t2SUBrSPi : T2sTwoRegImm<(outs GPR:$Rd), (ins GPR:$sp, t2_so_imm:$imm),
IIC_iALUi, "sub", ".w\t$Rd, $sp, $imm", []> {
def t2SUBrSPi : T2sTwoRegImm<(outs GPR:$Rd), (ins GPR:$Rn, t2_so_imm:$imm),
IIC_iALUi, "sub", ".w\t$Rd, $Rn, $imm", []> {
let Inst{31-27} = 0b11110;
let Inst{25} = 0;
let Inst{24-21} = 0b1101;
let Inst{19-16} = 0b1101; // Rn = sp
let Inst{15} = 0;
}
def t2SUBrSPi12 : T2TwoRegImm<(outs GPR:$Rd), (ins GPR:$Rn, imm0_4095:$imm),
@ -1198,9 +1200,9 @@ def t2SUBrSPi12 : T2TwoRegImm<(outs GPR:$Rd), (ins GPR:$Rn, imm0_4095:$imm),
}
// SUB r, sp, so_reg
def t2SUBrSPs : T2sTwoRegImm<(outs GPR:$Rd), (ins GPR:$sp, t2_so_reg:$imm),
def t2SUBrSPs : T2sTwoRegImm<(outs GPR:$Rd), (ins GPR:$Rn, t2_so_reg:$imm),
IIC_iALUsi,
"sub", "\t$Rd, $sp, $imm", []> {
"sub", "\t$Rd, $Rn, $imm", []> {
let Inst{31-27} = 0b11101;
let Inst{26-25} = 0b01;
let Inst{24-21} = 0b1101;