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Fix disassembly of Thumb2 LDRSH with a #-0 offset.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139943 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -2731,7 +2731,10 @@ static DecodeStatus DecodeT2AddrModeImm0_1020s4(llvm::MCInst &Inst,unsigned Val,
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static DecodeStatus DecodeT2Imm8(llvm::MCInst &Inst, unsigned Val,
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uint64_t Address, const void *Decoder) {
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int imm = Val & 0xFF;
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if (!(Val & 0x100)) imm *= -1;
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if (Val == 0)
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imm = INT32_MIN;
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else if (!(Val & 0x100))
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imm *= -1;
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Inst.addOperand(MCOperand::CreateImm(imm));
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return MCDisassembler::Success;
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@ -802,7 +802,9 @@ void ARMInstPrinter::printT2AddrModeImm8Operand(const MCInst *MI,
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int32_t OffImm = (int32_t)MO2.getImm();
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// Don't print +0.
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if (OffImm < 0)
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if (OffImm == INT32_MIN)
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O << ", #-0";
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else if (OffImm < 0)
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O << ", #-" << -OffImm;
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else if (OffImm > 0)
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O << ", #" << OffImm;
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@ -751,13 +751,14 @@
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# CHECK: ldrsh.w r5, [r6, #33]
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# CHECK: ldrsh.w r5, [r6, #257]
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# CHECK: ldrsh.w lr, [r7, #257]
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# CHECK: ldrsh r10, [r5, #-0]
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0x35 0xf9 0x04 0x5c
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0xb6 0xf9 0x20 0x50
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0xb6 0xf9 0x21 0x50
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0xb6 0xf9 0x01 0x51
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0xb7 0xf9 0x01 0xe1
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0x35 0xf9 0x00 0xac
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#------------------------------------------------------------------------------
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# LDRSH(register)
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