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

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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
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26
lib/Bitcode/Writer/BitcodeWriter.cpp
View File

@ -845,32 +845,6 @@ static void WriteConstants(unsigned FirstVal, unsigned LastVal,
} else {
assert (0 && "Unknown FP type!");
}
} else if (isa<ConstantArray>(C) && cast<ConstantArray>(C)->isString()) {
const ConstantArray *CA = cast<ConstantArray>(C);
// Emit constant strings specially.
unsigned NumOps = CA->getNumOperands();
// If this is a null-terminated string, use the denser CSTRING encoding.
if (CA->getOperand(NumOps-1)->isNullValue()) {
Code = bitc::CST_CODE_CSTRING;
--NumOps; // Don't encode the null, which isn't allowed by char6.
} else {
Code = bitc::CST_CODE_STRING;
AbbrevToUse = String8Abbrev;
}
bool isCStr7 = Code == bitc::CST_CODE_CSTRING;
bool isCStrChar6 = Code == bitc::CST_CODE_CSTRING;
for (unsigned i = 0; i != NumOps; ++i) {
unsigned char V = cast<ConstantInt>(CA->getOperand(i))->getZExtValue();
Record.push_back(V);
isCStr7 &= (V & 128) == 0;
if (isCStrChar6)
isCStrChar6 = BitCodeAbbrevOp::isChar6(V);
}
if (isCStrChar6)
AbbrevToUse = CString6Abbrev;
else if (isCStr7)
AbbrevToUse = CString7Abbrev;
} else if (isa<ConstantDataSequential>(C) &&
cast<ConstantDataSequential>(C)->isString()) {
const ConstantDataSequential *Str = cast<ConstantDataSequential>(C);

4
lib/Bitcode/Writer/ValueEnumerator.cpp
View File

@ -321,10 +321,6 @@ void ValueEnumerator::EnumerateValue(const Value *V) {
if (const Constant *C = dyn_cast<Constant>(V)) {
if (isa<GlobalValue>(C)) {
// Initializers for globals are handled explicitly elsewhere.
} else if (isa<ConstantArray>(C) && cast<ConstantArray>(C)->isString()) {
// Do not enumerate the initializers for an array of simple characters.
// The initializers just pollute the value table, and we emit the strings
// specially.
} else if (C->getNumOperands()) {
// If a constant has operands, enumerate them. This makes sure that if a
// constant has uses (for example an array of const ints), that they are