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Emit 128 bit constant.

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This fixes PR 8913 crash.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122971 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2011-01-06 21:39:25 +00:00
parent 6819dbb6f8
commit 76a788c886
2 changed files with 38 additions and 10 deletions
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47
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
View File

@ -894,6 +894,39 @@ bool DwarfDebug::addConstantFPValue(DIE *Die, const MachineOperand &MO) {
return true;
}
/// addConstantValue - Add constant value entry in variable DIE.
bool DwarfDebug::addConstantValue(DIE *Die, ConstantInt *CI,
bool Unsigned) {
if (CI->getBitWidth() <= 64) {
if (Unsigned)
addUInt(Die, dwarf::DW_AT_const_value, dwarf::DW_FORM_udata,
CI->getZExtValue());
else
addSInt(Die, dwarf::DW_AT_const_value, dwarf::DW_FORM_sdata,
CI->getSExtValue());
return true;
}
DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
// Get the raw data form of the large APInt.
const APInt Val = CI->getValue();
const char *Ptr = (const char*)Val.getRawData();
int NumBytes = Val.getBitWidth() / 8; // 8 bits per byte.
bool LittleEndian = Asm->getTargetData().isLittleEndian();
int Incr = (LittleEndian ? 1 : -1);
int Start = (LittleEndian ? 0 : NumBytes - 1);
int Stop = (LittleEndian ? NumBytes : -1);
// Output the constant to DWARF one byte at a time.
for (; Start != Stop; Start += Incr)
addUInt(Block, 0, dwarf::DW_FORM_data1,
(unsigned char)0xFF & Ptr[Start]);
addBlock(Die, dwarf::DW_AT_const_value, 0, Block);
return true;
}
/// addToContextOwner - Add Die into the list of its context owner's children.
void DwarfDebug::addToContextOwner(DIE *Die, DIDescriptor Context) {
@ -1957,16 +1990,10 @@ void DwarfDebug::constructGlobalVariableDIE(const MDNode *N) {
} else {
addBlock(VariableDIE, dwarf::DW_AT_location, 0, Block);
}
} else if (Constant *C = GV.getConstant()) {
if (ConstantInt *CI = dyn_cast<ConstantInt>(C)) {
if (isUnsignedDIType(GTy))
addUInt(VariableDIE, dwarf::DW_AT_const_value, dwarf::DW_FORM_udata,
CI->getZExtValue());
else
addSInt(VariableDIE, dwarf::DW_AT_const_value, dwarf::DW_FORM_sdata,
CI->getSExtValue());
}
}
} else if (ConstantInt *CI =
dyn_cast_or_null<ConstantInt>(GV.getConstant()))
addConstantValue(VariableDIE, CI, isUnsignedDIType(GTy));
return;
}

1
lib/CodeGen/AsmPrinter/DwarfDebug.h
View File

@ -301,6 +301,7 @@ private:
/// addConstantValue - Add constant value entry in variable DIE.
bool addConstantValue(DIE *Die, const MachineOperand &MO);
bool addConstantValue(DIE *Die, ConstantInt *CI, bool Unsigned);
/// addConstantFPValue - Add constant value entry in variable DIE.
bool addConstantFPValue(DIE *Die, const MachineOperand &MO);