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Add support for modifier characters to operand printers 

llvm-svn: 26021
This commit is contained in:
Chris Lattner 2006-02-06 22:17:23 +00:00
parent f1eac134b9
commit 34f74c180a
1 changed files with 21 additions and 2 deletions
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23
llvm/lib/CodeGen/AsmPrinter.cpp
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@ -538,7 +538,23 @@ void AsmPrinter::printInlineAsm(const MachineInstr *MI) const {
}
LastEmitted = IDEnd;
char Modifier[2] = { 0, 0 };
if (HasCurlyBraces) {
// If we have curly braces, check for a modifier character. This
// supports syntax like ${0:u}, which correspond to "%u0" in GCC asm.
if (*LastEmitted == ':') {
++LastEmitted; // Consume ':' character.
if (*LastEmitted == 0) {
std::cerr << "Bad ${:} expression in inline asm string: '"
<< AsmStr << "'\n";
exit(1);
}
Modifier[0] = *LastEmitted;
++LastEmitted; // Consume modifier character.
}
if (*LastEmitted != '}') {
std::cerr << "Bad ${} expression in inline asm string: '"
<< AsmStr << "'\n";
@ -553,11 +569,14 @@ void AsmPrinter::printInlineAsm(const MachineInstr *MI) const {
exit(1);
}
char ExtraCode = 0; // FIXME:
// Okay, we finally have an operand number. Ask the target to print this
// operand!
if (CurVariant == -1 || CurVariant == AsmPrinterVariant)
if (const_cast<AsmPrinter*>(this)->
PrintAsmOperand(MI, Val+1, AsmPrinterVariant)) {
PrintAsmOperand(MI, Val+1, AsmPrinterVariant,
Modifier[0] ? Modifier : 0)) {
std::cerr << "Invalid operand found in inline asm: '"
<< AsmStr << "'\n";
MI->dump();
@ -601,7 +620,7 @@ void AsmPrinter::printInlineAsm(const MachineInstr *MI) const {
/// instruction, using the specified assembler variant. Targets should
/// overried this to format as appropriate.
bool AsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
unsigned AsmVariant) {
unsigned AsmVariant, const char *ExtraCode) {
// Target doesn't support this yet!
return true;
}