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add a new EmitInlineAsm function to asmprinter to handle inline asm.

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If we have an MCAsmStreamer, we continue to emit asm textually, 
otherwise we (currently) emit an error to errs and ignore it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100289 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-04-03 21:35:55 +00:00
parent 47b7e5dae9
commit 91bead7905
5 changed files with 64 additions and 9 deletions
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24
lib/CodeGen/AsmPrinter/AsmPrinter.cpp
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@@ -125,14 +125,12 @@ bool AsmPrinter::doInitialization(Module &M) {
for (GCModuleInfo::iterator I = MI->begin(), E = MI->end(); I != E; ++I)
if (GCMetadataPrinter *MP = GetOrCreateGCPrinter(*I))
MP->beginAssembly(O, *this, *MAI);
// Emit module-level inline asm if it exists.
if (!M.getModuleInlineAsm().empty()) {
OutStreamer.AddComment("Start of file scope inline assembly");
OutStreamer.AddBlankLine();
O << M.getModuleInlineAsm();
if (*M.getModuleInlineAsm().rbegin() != '\n')
OutStreamer.AddBlankLine();
EmitInlineAsm(M.getModuleInlineAsm());
OutStreamer.AddComment("End of file scope inline assembly");
OutStreamer.AddBlankLine();
}
@@ -879,6 +877,22 @@ void AsmPrinter::EmitXXStructorList(Constant *List) {
}
}
/// EmitInlineAsm - Emit a blob of inline asm to the output streamer.
void AsmPrinter::EmitInlineAsm(StringRef Str) {
assert(!Str.empty() && "Can't emit empty inline asm block");
// If the output streamer is actually a .s file, just emit the blob textually.
// This is useful in case the asm parser doesn't handle something but the
// system assembler does.
if (OutStreamer.hasRawTextSupport()) {
OutStreamer.EmitRawText(Str);
return;
}
errs() << "Inline asm not supported by this streamer!\n";
}
//===--------------------------------------------------------------------===//
// Emission and print routines
//