maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Correctly print out ASCII literal strings on AIX 

llvm-svn: 15674
This commit is contained in:
Misha Brukman 2004-08-12 01:01:13 +00:00
parent 345399b06e
commit 5098bd5499
1 changed files with 48 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

70
llvm/lib/Target/PowerPC/PPC64AsmPrinter.cpp
View File

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