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Added a parameter to control whether Constant::getStringValue() would chop

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off the result string at the first null terminator.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26704 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2006-03-10 23:52:03 +00:00
parent 7907b6950b
commit 0937103368
3 changed files with 12 additions and 6 deletions
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4
include/llvm/Constant.h
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@ -93,8 +93,10 @@ public:
/// 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.
/// Parameter Chop determines if the result is chopped at the first null
/// terminator.
///
std::string getStringValue(unsigned Offset = 0);
std::string getStringValue(bool Chop = true, unsigned Offset = 0);
};
} // End llvm namespace

2
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
View File

@ -1941,7 +1941,7 @@ void SelectionDAGLowering::visitMemIntrinsic(CallInst &I, unsigned Op) {
if (G) {
GlobalVariable *GV = dyn_cast<GlobalVariable>(G->getGlobal());
if (GV) {
Str = GV->getStringValue();
Str = GV->getStringValue(false);
if (!Str.empty()) {
CopyFromStr = true;
SrcOff += SrcDelta;

12
lib/VMCore/Constants.cpp
View File

@ -1715,8 +1715,10 @@ void Constant::clearAllValueMaps() {
/// 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.
/// Parameter Chop determines if the result is chopped at the first null
/// terminator.
///
std::string Constant::getStringValue(unsigned Offset) {
std::string Constant::getStringValue(bool Chop, unsigned Offset) {
if (GlobalVariable *GV = dyn_cast<GlobalVariable>(this)) {
if (GV->hasInitializer() && isa<ConstantArray>(GV->getInitializer())) {
ConstantArray *Init = cast<ConstantArray>(GV->getInitializer());
@ -1727,9 +1729,11 @@ std::string Constant::getStringValue(unsigned Offset) {
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());
if (Chop) {
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;
}
}