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Added emulation of shifts to the IR interpreter. 

<rdar://problem/12978619>

llvm-svn: 172013
This commit is contained in:
Sean Callanan 2013-01-09 22:44:41 +00:00
parent 95b604b276
commit 087f437b60
3 changed files with 51 additions and 0 deletions
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4
lldb/include/lldb/Core/Scalar.h
View File

@ -277,6 +277,8 @@ private:
friend const Scalar operator| (const Scalar& lhs, const Scalar& rhs);
friend const Scalar operator% (const Scalar& lhs, const Scalar& rhs);
friend const Scalar operator^ (const Scalar& lhs, const Scalar& rhs);
friend const Scalar operator<< (const Scalar& lhs, const Scalar& rhs);
friend const Scalar operator>> (const Scalar& lhs, const Scalar& rhs);
friend bool operator== (const Scalar& lhs, const Scalar& rhs);
friend bool operator!= (const Scalar& lhs, const Scalar& rhs);
friend bool operator< (const Scalar& lhs, const Scalar& rhs);
@ -309,6 +311,8 @@ const Scalar operator& (const Scalar& lhs, const Scalar& rhs);
const Scalar operator| (const Scalar& lhs, const Scalar& rhs);
const Scalar operator% (const Scalar& lhs, const Scalar& rhs);
const Scalar operator^ (const Scalar& lhs, const Scalar& rhs);
const Scalar operator<< (const Scalar& lhs, const Scalar& rhs);
const Scalar operator>> (const Scalar& lhs, const Scalar& rhs);
bool operator== (const Scalar& lhs, const Scalar& rhs);
bool operator!= (const Scalar& lhs, const Scalar& rhs);
bool operator< (const Scalar& lhs, const Scalar& rhs);

16
lldb/source/Core/Scalar.cpp
View File

@ -1717,6 +1717,22 @@ lldb_private::operator^ (const Scalar& lhs, const Scalar& rhs)
return result;
}
const Scalar
lldb_private::operator<< (const Scalar& lhs, const Scalar &rhs)
{
Scalar result = lhs;
result <<= rhs;
return result;
}
const Scalar
lldb_private::operator>> (const Scalar& lhs, const Scalar &rhs)
{
Scalar result = lhs;
result >>= rhs;
return result;
}
// Return the raw unsigned integer without any casting or conversion
unsigned int
Scalar::RawUInt () const

31
lldb/source/Expression/IRInterpreter.cpp
View File

@ -1042,17 +1042,23 @@ IRInterpreter::supportsFunction (Function &llvm_function,
}
}
break;
case Instruction::And:
case Instruction::AShr:
case Instruction::IntToPtr:
case Instruction::PtrToInt:
case Instruction::Load:
case Instruction::LShr:
case Instruction::Mul:
case Instruction::Or:
case Instruction::Ret:
case Instruction::SDiv:
case Instruction::Shl:
case Instruction::SRem:
case Instruction::Store:
case Instruction::Sub:
case Instruction::UDiv:
case Instruction::URem:
case Instruction::Xor:
case Instruction::ZExt:
break;
}
@ -1139,6 +1145,12 @@ IRInterpreter::runOnFunction (lldb::ClangExpressionVariableSP &result,
case Instruction::UDiv:
case Instruction::SRem:
case Instruction::URem:
case Instruction::Shl:
case Instruction::LShr:
case Instruction::AShr:
case Instruction::And:
case Instruction::Or:
case Instruction::Xor:
{
const BinaryOperator *bin_op = dyn_cast<BinaryOperator>(inst);
@ -1202,6 +1214,25 @@ IRInterpreter::runOnFunction (lldb::ClangExpressionVariableSP &result,
case Instruction::URem:
result = L.GetRawBits64(0) % R.GetRawBits64(1);
break;
case Instruction::Shl:
result = L << R;
break;
case Instruction::AShr:
result = L >> R;
break;
case Instruction::LShr:
result = L;
result.ShiftRightLogical(R);
break;
case Instruction::And:
result = L & R;
break;
case Instruction::Or:
result = L | R;
break;
case Instruction::Xor:
result = L ^ R;
break;
}
frame.AssignValue(inst, result, llvm_module);