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start moving towards emitting inline asm statements with

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EmitInlineAsm.  However, this attempt is foiled by operands
being emitted directly to "O" so I'll have to do some surgery
and finish MCizing the world.

llvm-svn: 100291
This commit is contained in:
Chris Lattner 2010-04-03 22:01:50 +00:00
parent cf35bb049a
commit 940911edf1
2 changed files with 36 additions and 10 deletions
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2
include/llvm/CodeGen/AsmPrinter.h
View File

@ -359,7 +359,7 @@ namespace llvm {
private:
/// EmitInlineAsm - Emit a blob of inline asm to the output streamer.
void EmitInlineAsm(StringRef Str);
void EmitInlineAsm(StringRef Str) const;
/// processDebugLoc - Processes the debug information of each machine
/// instruction's DebugLoc.

44
lib/CodeGen/AsmPrinter/AsmPrinter.cpp
View File

@ -878,7 +878,7 @@ void AsmPrinter::EmitXXStructorList(Constant *List) {
}
/// EmitInlineAsm - Emit a blob of inline asm to the output streamer.
void AsmPrinter::EmitInlineAsm(StringRef Str) {
void AsmPrinter::EmitInlineAsm(StringRef Str) const {
assert(!Str.empty() && "Can't emit empty inline asm block");
// If the output streamer is actually a .s file, just emit the blob textually.
@ -1366,9 +1366,11 @@ void AsmPrinter::processDebugLoc(const MachineInstr *MI,
/// printInlineAsm - This method formats and prints the specified machine
/// instruction that is an inline asm.
void AsmPrinter::printInlineAsm(const MachineInstr *MI) const {
assert(MI->isInlineAsm() && "printInlineAsm only works on inline asms");
unsigned NumOperands = MI->getNumOperands();
// Count the number of register definitions.
// Count the number of register definitions to find the asm string.
unsigned NumDefs = 0;
for (; MI->getOperand(NumDefs).isReg() && MI->getOperand(NumDefs).isDef();
++NumDefs)
@ -1379,17 +1381,32 @@ void AsmPrinter::printInlineAsm(const MachineInstr *MI) const {
// Disassemble the AsmStr, printing out the literal pieces, the operands, etc.
const char *AsmStr = MI->getOperand(NumDefs).getSymbolName();
O << '\t';
// If this asmstr is empty, just print the #APP/#NOAPP markers.
// These are useful to see where empty asm's wound up.
if (AsmStr[0] == 0) {
O << MAI->getCommentString() << MAI->getInlineAsmStart() << "\n\t";
O << MAI->getCommentString() << MAI->getInlineAsmEnd() << '\n';
if (!OutStreamer.hasRawTextSupport()) return;
OutStreamer.EmitRawText(std::string("\t")+MAI->getCommentString()+
MAI->getInlineAsmStart());
OutStreamer.EmitRawText(std::string("\t")+MAI->getCommentString()+
MAI->getInlineAsmEnd());
return;
}
// Emit the #APP start marker. This has to happen even if verbose-asm isn't
// enabled, so we use EmitRawText.
if (OutStreamer.hasRawTextSupport())
OutStreamer.EmitRawText(std::string("\t")+MAI->getCommentString()+
MAI->getInlineAsmStart());
// Emit the inline asm to a temporary string so we can emit it through
// EmitInlineAsm.
#if 0
SmallString<256> StringData;
raw_svector_ostream O(StringData);
#endif
O << MAI->getCommentString() << MAI->getInlineAsmStart() << "\n\t";
O << '\t';
// The variant of the current asmprinter.
int AsmPrinterVariant = MAI->getAssemblerDialect();
@ -1558,8 +1575,17 @@ void AsmPrinter::printInlineAsm(const MachineInstr *MI) const {
}
}
}
O << "\n\t" << MAI->getCommentString() << MAI->getInlineAsmEnd();
OutStreamer.AddBlankLine();
O << "\n";
#if 0
EmitInlineAsm(O.str());
#endif
// Emit the #NOAPP end marker. This has to happen even if verbose-asm isn't
// enabled, so we use EmitRawText.
if (OutStreamer.hasRawTextSupport())
OutStreamer.EmitRawText(std::string("\t")+MAI->getCommentString()+
MAI->getInlineAsmEnd());
}
/// printImplicitDef - This method prints the specified machine instruction