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Get rid of the multiple copies of getStringValue. Now a Constant:: method.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26616 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Laskey
2006-03-08 18:11:07 +00:00
parent 1ffd41ab99
commit 21b6c9d647
6 changed files with 51 additions and 103 deletions
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lib/Debugger/ProgramInfo.cpp
+3 -42
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@@ -38,45 +38,6 @@ static void getGlobalVariablesUsing(Value *V,
}
}
/// getStringValue - Turn an LLVM constant pointer that eventually points to a
/// global into a string value. Return an empty string if we can't do it.
///
static std::string getStringValue(Value *V, unsigned Offset = 0) {
if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
if (GV->hasInitializer() && isa<ConstantArray>(GV->getInitializer())) {
ConstantArray *Init = cast<ConstantArray>(GV->getInitializer());
if (Init->isString()) {
std::string Result = Init->getAsString();
if (Offset < Result.size()) {
// If we are pointing INTO The string, erase the beginning...
Result.erase(Result.begin(), Result.begin()+Offset);
// Take off the null terminator, and any string fragments after it.
std::string::size_type NullPos = Result.find_first_of((char)0);
if (NullPos != std::string::npos)
Result.erase(Result.begin()+NullPos, Result.end());
return Result;
}
}
}
} else if (Constant *C = dyn_cast<Constant>(V)) {
if (GlobalValue *GV = dyn_cast<GlobalValue>(C))
return getStringValue(GV, Offset);
else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
if (CE->getOpcode() == Instruction::GetElementPtr) {
// Turn a gep into the specified offset.
if (CE->getNumOperands() == 3 &&
cast<Constant>(CE->getOperand(1))->isNullValue() &&
isa<ConstantInt>(CE->getOperand(2))) {
return getStringValue(CE->getOperand(0),
Offset+cast<ConstantInt>(CE->getOperand(2))->getRawValue());
}
}
}
}
return "";
}
/// getNextStopPoint - Follow the def-use chains of the specified LLVM value,
/// traversing the use chains until we get to a stoppoint. When we do, return
/// the source location of the stoppoint. If we don't find a stoppoint, return
@@ -158,8 +119,8 @@ SourceFileInfo::SourceFileInfo(const GlobalVariable *Desc,
if (ConstantUInt *CUI = dyn_cast<ConstantUInt>(CS->getOperand(1)))
Version = CUI->getValue();
BaseName = getStringValue(CS->getOperand(3));
Directory = getStringValue(CS->getOperand(4));
BaseName = CS->getOperand(3)->getStringValue();
Directory = CS->getOperand(4)->getStringValue();
}
}
@@ -199,7 +160,7 @@ SourceFunctionInfo::SourceFunctionInfo(ProgramInfo &PI,
SourceFile = &PI.getSourceFile(GV);
// Entry #2 is the function name.
Name = getStringValue(CS->getOperand(2));
Name = CS->getOperand(2)->getStringValue();
}
}