6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-07-22 23:24:59 +00:00
Code Issues Projects Releases Wiki Activity

with recent changes, ConstantArray is never a "string". Remove the associated

Browse Source 
methods and constant fold the clients to false.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149362 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2012-01-31 06:05:00 +00:00
parent ca012b8b23
commit 1b2f643753
8 changed files with 45 additions and 256 deletions
Download Patch File Download Diff File Expand all files Collapse all files

63
lib/VMCore/Constants.cpp
View File

@@ -1201,69 +1201,6 @@ void ConstantArray::destroyConstant() {
destroyConstantImpl();
}
/// isString - This method returns true if the array is an array of i8, and
/// if the elements of the array are all ConstantInt's.
bool ConstantArray::isString() const {
// Check the element type for i8...
if (!getType()->getElementType()->isIntegerTy(8))
return false;
// Check the elements to make sure they are all integers, not constant
// expressions.
for (unsigned i = 0, e = getNumOperands(); i != e; ++i)
if (!isa<ConstantInt>(getOperand(i)))
return false;
return true;
}
/// isCString - This method returns true if the array is a string (see
/// isString) and it ends in a null byte \\0 and does not contains any other
/// null bytes except its terminator.
bool ConstantArray::isCString() const {
// Check the element type for i8...
if (!getType()->getElementType()->isIntegerTy(8))
return false;
// Last element must be a null.
if (!getOperand(getNumOperands()-1)->isNullValue())
return false;
// Other elements must be non-null integers.
for (unsigned i = 0, e = getNumOperands()-1; i != e; ++i) {
if (!isa<ConstantInt>(getOperand(i)))
return false;
if (getOperand(i)->isNullValue())
return false;
}
return true;
}
/// convertToString - Helper function for getAsString() and getAsCString().
static std::string convertToString(const User *U, unsigned len) {
std::string Result;
Result.reserve(len);
for (unsigned i = 0; i != len; ++i)
Result.push_back((char)cast<ConstantInt>(U->getOperand(i))->getZExtValue());
return Result;
}
/// getAsString - If this array is isString(), then this method converts the
/// array to an std::string and returns it. Otherwise, it asserts out.
///
std::string ConstantArray::getAsString() const {
assert(isString() && "Not a string!");
return convertToString(this, getNumOperands());
}
/// getAsCString - If this array is isCString(), then this method converts the
/// array (without the trailing null byte) to an std::string and returns it.
/// Otherwise, it asserts out.
///
std::string ConstantArray::getAsCString() const {
assert(isCString() && "Not a string!");
return convertToString(this, getNumOperands() - 1);
}
//---- ConstantStruct::get() implementation...
//