[llvm] r191686 - [ARM] Clean up ARMAsmParser::validateInstruction().

Tilmann Scheller tscheller at apple.com
Mon Sep 30 11:55:00 PDT 2013


Fixed in 191691.

Regards,

Tilmann

On Sep 30, 2013, at 8:33 PM, Tilmann Scheller <tscheller at apple.com> wrote:

> Looks like I unintentionally broke “make check” with this formatting changes, I’m working on a fix.
> 
> Regards
> 
> Tilmann
> 
> On Sep 30, 2013, at 7:57 PM, Tilmann Scheller <tilmann.scheller at googlemail.com> wrote:
> 
>> Author: tilmann
>> Date: Mon Sep 30 12:57:30 2013
>> New Revision: 191686
>> 
>> URL: http://llvm.org/viewvc/llvm-project?rev=191686&view=rev
>> Log:
>> [ARM] Clean up ARMAsmParser::validateInstruction().
>> 
>> Fix some LLVM Coding Standards violations.
>> 
>> No changes in functionality.
>> 
>> Modified:
>>    llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
>> 
>> Modified: llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
>> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp?rev=191686&r1=191685&r2=191686&view=diff
>> ==============================================================================
>> --- llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp (original)
>> +++ llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp Mon Sep 30 12:57:30 2013
>> @@ -5311,26 +5311,25 @@ validateInstruction(MCInst &Inst,
>> 
>>   // Check the IT block state first.
>>   // NOTE: BKPT and HLT instructions have the interesting property of being
>> -  // allowed in IT blocks, but not being predicable.  They just always
>> -  // execute.
>> +  // allowed in IT blocks, but not being predicable. They just always execute.
>>   if (inITBlock() && !instIsBreakpoint(Inst)) {
>> -    unsigned bit = 1;
>> +    unsigned Bit = 1;
>>     if (ITState.FirstCond)
>>       ITState.FirstCond = false;
>>     else
>> -      bit = (ITState.Mask >> (5 - ITState.CurPosition)) & 1;
>> +      Bit = (ITState.Mask >> (5 - ITState.CurPosition)) & 1;
>>     // The instruction must be predicable.
>>     if (!MCID.isPredicable())
>>       return Error(Loc, "instructions in IT block must be predicable");
>>     unsigned Cond = Inst.getOperand(MCID.findFirstPredOperandIdx()).getImm();
>> -    unsigned ITCond = bit ? ITState.Cond :
>> +    unsigned ITCond = Bit ? ITState.Cond :
>>       ARMCC::getOppositeCondition(ITState.Cond);
>>     if (Cond != ITCond) {
>>       // Find the condition code Operand to get its SMLoc information.
>>       SMLoc CondLoc;
>> -      for (unsigned i = 1; i < Operands.size(); ++i)
>> -        if (static_cast<ARMOperand*>(Operands[i])->isCondCode())
>> -          CondLoc = Operands[i]->getStartLoc();
>> +      for (unsigned I = 1; I < Operands.size(); ++I)
>> +        if (static_cast<ARMOperand*>(Operands[I])->isCondCode())
>> +          CondLoc = Operands[I]->getStartLoc();
>>       return Error(CondLoc, "incorrect condition in IT block; got '" +
>>                    StringRef(ARMCondCodeToString(ARMCC::CondCodes(Cond))) +
>>                    "', but expected '" +
>> @@ -5411,37 +5410,36 @@ validateInstruction(MCInst &Inst,
>>   }
>>   case ARM::SBFX:
>>   case ARM::UBFX: {
>> -    // width must be in range [1, 32-lsb]
>> -    unsigned lsb = Inst.getOperand(2).getImm();
>> -    unsigned widthm1 = Inst.getOperand(3).getImm();
>> -    if (widthm1 >= 32 - lsb)
>> +    // Width must be in range [1, 32-lsb].
>> +    unsigned LSB = Inst.getOperand(2).getImm();
>> +    unsigned Widthm1 = Inst.getOperand(3).getImm();
>> +    if (Widthm1 >= 32 - LSB)
>>       return Error(Operands[5]->getStartLoc(),
>>                    "bitfield width must be in range [1,32-lsb]");
>>     return false;
>>   }
>>   case ARM::tLDMIA: {
>>     // If we're parsing Thumb2, the .w variant is available and handles
>> -    // most cases that are normally illegal for a Thumb1 LDM
>> -    // instruction. We'll make the transformation in processInstruction()
>> -    // if necessary.
>> +    // most cases that are normally illegal for a Thumb1 LDM instruction.
>> +    // We'll make the transformation in processInstruction() if necessary.
>>     //
>>     // Thumb LDM instructions are writeback iff the base register is not
>>     // in the register list.
>>     unsigned Rn = Inst.getOperand(0).getReg();
>> -    bool hasWritebackToken =
>> +    bool HasWritebackToken =
>>       (static_cast<ARMOperand*>(Operands[3])->isToken() &&
>>        static_cast<ARMOperand*>(Operands[3])->getToken() == "!");
>> -    bool listContainsBase;
>> -    if (checkLowRegisterList(Inst, 3, Rn, 0, listContainsBase) && !isThumbTwo())
>> -      return Error(Operands[3 + hasWritebackToken]->getStartLoc(),
>> +    bool ListContainsBase;
>> +    if (checkLowRegisterList(Inst, 3, Rn, 0, ListContainsBase) && !isThumbTwo())
>> +      return Error(Operands[3 + HasWritebackToken]->getStartLoc(),
>>                    "registers must be in range r0-r7");
>>     // If we should have writeback, then there should be a '!' token.
>> -    if (!listContainsBase && !hasWritebackToken && !isThumbTwo())
>> +    if (!ListContainsBase && !HasWritebackToken && !isThumbTwo())
>>       return Error(Operands[2]->getStartLoc(),
>>                    "writeback operator '!' expected");
>>     // If we should not have writeback, there must not be a '!'. This is
>>     // true even for the 32-bit wide encodings.
>> -    if (listContainsBase && hasWritebackToken)
>> +    if (ListContainsBase && HasWritebackToken)
>>       return Error(Operands[3]->getStartLoc(),
>>                    "writeback operator '!' not allowed when base register "
>>                    "in register list");
>> @@ -5478,24 +5476,24 @@ validateInstruction(MCInst &Inst,
>>   // so only issue a diagnostic for thumb1. The instructions will be
>>   // switched to the t2 encodings in processInstruction() if necessary.
>>   case ARM::tPOP: {
>> -    bool listContainsBase;
>> -    if (checkLowRegisterList(Inst, 2, 0, ARM::PC, listContainsBase) &&
>> +    bool ListContainsBase;
>> +    if (checkLowRegisterList(Inst, 2, 0, ARM::PC, ListContainsBase) &&
>>         !isThumbTwo())
>>       return Error(Operands[2]->getStartLoc(),
>>                    "registers must be in range r0-r7 or pc");
>>     break;
>>   }
>>   case ARM::tPUSH: {
>> -    bool listContainsBase;
>> -    if (checkLowRegisterList(Inst, 2, 0, ARM::LR, listContainsBase) &&
>> +    bool ListContainsBase;
>> +    if (checkLowRegisterList(Inst, 2, 0, ARM::LR, ListContainsBase) &&
>>         !isThumbTwo())
>>       return Error(Operands[2]->getStartLoc(),
>>                    "registers must be in range r0-r7 or lr");
>>     break;
>>   }
>>   case ARM::tSTMIA_UPD: {
>> -    bool listContainsBase;
>> -    if (checkLowRegisterList(Inst, 4, 0, 0, listContainsBase) && !isThumbTwo())
>> +    bool ListContainsBase;
>> +    if (checkLowRegisterList(Inst, 4, 0, 0, ListContainsBase) && !isThumbTwo())
>>       return Error(Operands[4]->getStartLoc(),
>>                    "registers must be in range r0-r7");
>>     break;
>> @@ -5510,26 +5508,26 @@ validateInstruction(MCInst &Inst,
>>     }
>>     break;
>>   }
>> -  // final range checking for Thumb unconditional branch instructions
>> +  // Final range checking for Thumb unconditional branch instructions.
>>   case ARM::tB:
>> -    if(!(static_cast<ARMOperand*>(Operands[2]))->isSignedOffset<11, 1>())
>> -      return Error(Operands[2]->getStartLoc(), "Branch target out of range");
>> +    if (!(static_cast<ARMOperand*>(Operands[2]))->isSignedOffset<11, 1>())
>> +      return Error(Operands[2]->getStartLoc(), "branch target out of range");
>>     break;
>>   case ARM::t2B: {
>>     int op = (Operands[2]->isImm()) ? 2 : 3;
>> -    if(!(static_cast<ARMOperand*>(Operands[op]))->isSignedOffset<24, 1>())
>> -      return Error(Operands[op]->getStartLoc(), "Branch target out of range");
>> +    if (!(static_cast<ARMOperand*>(Operands[op]))->isSignedOffset<24, 1>())
>> +      return Error(Operands[op]->getStartLoc(), "branch target out of range");
>>     break;
>>   }
>> -  // final range checking for Thumb conditional branch instructions
>> +  // Final range checking for Thumb conditional branch instructions.
>>   case ARM::tBcc:
>> -    if(!(static_cast<ARMOperand*>(Operands[2]))->isSignedOffset<8, 1>())
>> -      return Error(Operands[2]->getStartLoc(), "Branch target out of range");
>> +    if (!(static_cast<ARMOperand*>(Operands[2]))->isSignedOffset<8, 1>())
>> +      return Error(Operands[2]->getStartLoc(), "branch target out of range");
>>     break;
>>   case ARM::t2Bcc: {
>> -    int op = (Operands[2]->isImm()) ? 2 : 3;
>> -    if(!(static_cast<ARMOperand*>(Operands[op]))->isSignedOffset<20, 1>())
>> -      return Error(Operands[op]->getStartLoc(), "Branch target out of range");
>> +    int Op = (Operands[2]->isImm()) ? 2 : 3;
>> +    if (!(static_cast<ARMOperand*>(Operands[Op]))->isSignedOffset<20, 1>())
>> +      return Error(Operands[Op]->getStartLoc(), "branch target out of range");
>>     break;
>>   }
>>   }
>> 
>> 
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