[llvm-commits] [llvm] r171303 - in /llvm/trunk: include/llvm/Analysis/MemoryBuiltins.h lib/Analysis/MemoryBuiltins.cpp

[Nuno Lopes]

Commited along with r171325.
Thanks for the reminder!
Nuno

----- Original Message -----
> testcase?
>
> On 31 December 2012 11:23, Nuno Lopes <nunoplopes at sapo.pt> wrote:
>> Author: nlopes
>> Date: Mon Dec 31 10:23:48 2012
>> New Revision: 171303
>>
>> URL: http://llvm.org/viewvc/llvm-project?rev=171303&view=rev
>> Log:
>> add support for GlobalAlias to ObjectSizeOffsetVisitor
>>
>> Modified:
>>     llvm/trunk/include/llvm/Analysis/MemoryBuiltins.h
>>     llvm/trunk/lib/Analysis/MemoryBuiltins.cpp
>>
>> Modified: llvm/trunk/include/llvm/Analysis/MemoryBuiltins.h
>> URL: 
>> http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Analysis/MemoryBuiltins.h?rev=171303&r1=171302&r2=171303&view=diff
>> ==============================================================================
>> --- llvm/trunk/include/llvm/Analysis/MemoryBuiltins.h (original)
>> +++ llvm/trunk/include/llvm/Analysis/MemoryBuiltins.h Mon Dec 31 10:23:48 
>> 2012
>> @@ -191,6 +191,7 @@
>>    SizeOffsetType visitExtractElementInst(ExtractElementInst &I);
>>    SizeOffsetType visitExtractValueInst(ExtractValueInst &I);
>>    SizeOffsetType visitGEPOperator(GEPOperator &GEP);
>> +  SizeOffsetType visitGlobalAlias(GlobalAlias &GA);
>>    SizeOffsetType visitGlobalVariable(GlobalVariable &GV);
>>    SizeOffsetType visitIntToPtrInst(IntToPtrInst&);
>>    SizeOffsetType visitLoadInst(LoadInst &I);
>>
>> Modified: llvm/trunk/lib/Analysis/MemoryBuiltins.cpp
>> URL: 
>> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Analysis/MemoryBuiltins.cpp?rev=171303&r1=171302&r2=171303&view=diff
>> ==============================================================================
>> --- llvm/trunk/lib/Analysis/MemoryBuiltins.cpp (original)
>> +++ llvm/trunk/lib/Analysis/MemoryBuiltins.cpp Mon Dec 31 10:23:48 2012
>> @@ -399,6 +399,8 @@
>>      return visitArgument(*A);
>>    if (ConstantPointerNull *P = dyn_cast<ConstantPointerNull>(V))
>>      return visitConstantPointerNull(*P);
>> +  if (GlobalAlias *GA = dyn_cast<GlobalAlias>(V))
>> +    return visitGlobalAlias(*GA);
>>    if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V))
>>      return visitGlobalVariable(*GV);
>>    if (UndefValue *UV = dyn_cast<UndefValue>(V))
>> @@ -517,6 +519,12 @@
>>    return std::make_pair(PtrData.first, PtrData.second + Offset);
>>  }
>>
>> +SizeOffsetType ObjectSizeOffsetVisitor::visitGlobalAlias(GlobalAlias 
>> &GA) {
>> +  if (GA.mayBeOverridden())
>> +    return unknown();
>> +  return compute(GA.getAliasee());
>> +}
>> +
>>  SizeOffsetType 
>> ObjectSizeOffsetVisitor::visitGlobalVariable(GlobalVariable &GV){
>>    if (!GV.hasDefinitiveInitializer())
>>      return unknown();
>> @@ -629,6 +637,7 @@
>>    } else if (isa<Argument>(V) ||
>>               (isa<ConstantExpr>(V) &&
>>                cast<ConstantExpr>(V)->getOpcode() == 
>> Instruction::IntToPtr) ||
>> +             isa<GlobalAlias>(V) ||
>>               isa<GlobalVariable>(V)) {
>>      // ignore values where we cannot do more than what ObjectSizeVisitor 
>> can
>>      Result = unknown();
>>
>>
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