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add support for .asciz, and enable it by default. If your target assemblerdoesn't support .asciz, just set AscizDirective to null in your asmprinter.

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This compiles C strings to:

l1__2E_str_1:                           ; '.str_1'
        .asciz  "foo"

instead of:

l1__2E_str_1:                           ; '.str_1'
        .ascii  "foo\000"


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24272 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-11-10 18:06:33 +00:00
parent 38b6d78112
commit 2980cefb80
1 changed files with 13 additions and 5 deletions
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18
lib/CodeGen/AsmPrinter.cpp
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@ -141,14 +141,15 @@ static inline char toOctal(int X) {
return (X&7)+'0';
}
/// getAsCString - Return the specified array as a C compatible string, only if
/// printAsCString - Print the specified array as a C compatible string, only if
/// the predicate isString is true.
///
static void printAsCString(std::ostream &O, const ConstantArray *CVA) {
static void printAsCString(std::ostream &O, const ConstantArray *CVA,
unsigned LastElt) {
assert(CVA->isString() && "Array is not string compatible!");
O << "\"";
for (unsigned i = 0; i != CVA->getNumOperands(); ++i) {
for (unsigned i = 0; i != LastElt; ++i) {
unsigned char C =
(unsigned char)cast<ConstantInt>(CVA->getOperand(i))->getRawValue();
@ -187,8 +188,15 @@ void AsmPrinter::emitGlobalConstant(const Constant *CV) {
return;
} else if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) {
if (CVA->isString()) {
O << AsciiDirective;
printAsCString(O, CVA);
unsigned NumElts = CVA->getNumOperands();
if (AscizDirective && NumElts &&
cast<ConstantInt>(CVA->getOperand(NumElts-1))->getRawValue() == 0) {
O << AscizDirective;
printAsCString(O, CVA, NumElts-1);
} else {
O << AsciiDirective;
printAsCString(O, CVA, NumElts);
}
O << "\n";
} else { // Not a string. Print the values in successive locations
for (unsigned i = 0, e = CVA->getNumOperands(); i != e; ++i)