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Correctly print out ASCII literal strings on AIX
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15674 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -115,39 +115,67 @@ static inline char toOctal(int X) {
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return (X&7)+'0';
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}
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// Possible states while outputting ASCII strings
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namespace {
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enum StringSection {
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None,
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Alpha,
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Numeric
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};
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}
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/// SwitchStringSection - manage the changes required to output bytes as
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/// characters in a string vs. numeric decimal values
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///
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static inline void SwitchStringSection(std::ostream &O, StringSection NewSect,
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StringSection &Current) {
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if (Current == None) {
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if (NewSect == Alpha)
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O << "\t.byte \"";
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else if (NewSect == Numeric)
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O << "\t.byte ";
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} else if (Current == Alpha) {
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if (NewSect == None)
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O << "\"";
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else if (NewSect == Numeric)
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O << "\"\n"
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<< "\t.byte ";
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} else if (Current == Numeric) {
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if (NewSect == Alpha)
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O << '\n'
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<< "\t.byte \"";
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else if (NewSect == Numeric)
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O << ", ";
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}
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Current = NewSect;
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}
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/// getAsCString - Return the specified array as a C compatible
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/// string, only if the predicate isStringCompatible is true.
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///
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static void printAsCString(std::ostream &O, const ConstantArray *CVA) {
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assert(isStringCompatible(CVA) && "Array is not string compatible!");
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O << "\"";
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for (unsigned i = 0; i < CVA->getNumOperands(); ++i) {
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unsigned char C = cast<ConstantInt>(CVA->getOperand(i))->getRawValue();
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if (CVA->getNumOperands() == 0)
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return;
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StringSection Current = None;
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for (unsigned i = 0, e = CVA->getNumOperands(); i != e; ++i) {
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unsigned char C = cast<ConstantInt>(CVA->getOperand(i))->getRawValue();
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if (C == '"') {
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O << "\\\"";
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} else if (C == '\\') {
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O << "\\\\";
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SwitchStringSection(O, Alpha, Current);
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O << "\"\"";
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} else if (isprint(C)) {
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SwitchStringSection(O, Alpha, Current);
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O << C;
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} else {
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switch (C) {
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case '\b': O << "\\b"; break;
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case '\f': O << "\\f"; break;
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case '\n': O << "\\n"; break;
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case '\r': O << "\\r"; break;
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case '\t': O << "\\t"; break;
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default:
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O << '\\';
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O << toOctal(C >> 6);
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O << toOctal(C >> 3);
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O << toOctal(C >> 0);
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break;
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}
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SwitchStringSection(O, Numeric, Current);
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O << utostr((unsigned)C);
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}
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}
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O << "\"";
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SwitchStringSection(O, None, Current);
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O << '\n';
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}
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// Print out the specified constant, without a storage class. Only the
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@ -227,9 +255,7 @@ void Printer::emitGlobalConstant(const Constant *CV) {
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if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) {
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if (isStringCompatible(CVA)) {
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O << "\t.byte ";
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printAsCString(O, CVA);
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O << "\n";
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} else { // Not a string. Print the values in successive locations
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for (unsigned i=0, e = CVA->getNumOperands(); i != e; i++)
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emitGlobalConstant(CVA->getOperand(i));
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