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Add operand encoding for Thumb2 subw SP + imm. rdar://8745434

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llvm-svn: 121310
This commit is contained in:
Jim Grosbach 2010-12-08 23:12:09 +00:00
parent a423fbc4c7
commit 4f11f0f871
1 changed files with 7 additions and 3 deletions
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10
lib/Target/ARM/ARMInstrThumb2.td
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@ -1195,12 +1195,16 @@ def t2SUBrSPi : T2sTwoRegImm<(outs GPR:$Rd), (ins GPR:$sp, t2_so_imm:$imm),
}
def t2SUBrSPi12 : T2TwoRegImm<(outs GPR:$Rd), (ins GPR:$sp, imm0_4095:$imm),
IIC_iALUi, "subw", "\t$Rd, $sp, $imm", []> {
bits<4> Rd;
bits<12> imm;
let Inst{31-27} = 0b11110;
let Inst{25} = 1;
let Inst{24-21} = 0b0101;
let Inst{20} = 0; // The S bit.
let Inst{26} = imm{11};
let Inst{25-20} = 0b101010;
let Inst{19-16} = 0b1101; // Rn = sp
let Inst{15} = 0;
let Inst{14-12} = imm{10-8};
let Inst{11-8} = Rd;
let Inst{7-0} = imm{7-0};
}
// SUB r, sp, so_reg