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refactor the interface to EmitInlineAsm a bit, no functionality change.

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llvm-svn: 119482
This commit is contained in:
Chris Lattner 2010-11-17 07:53:40 +00:00
parent 9ecbca191a
commit 003e3db609
3 changed files with 20 additions and 12 deletions
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3
include/llvm/CodeGen/AsmPrinter.h
View File

@ -49,6 +49,7 @@ namespace llvm {
class MCSection;
class MCStreamer;
class MCSymbol;
class MDNode;
class DwarfDebug;
class DwarfException;
class Mangler;
@ -432,7 +433,7 @@ namespace llvm {
mutable unsigned SetCounter;
/// EmitInlineAsm - Emit a blob of inline asm to the output streamer.
void EmitInlineAsm(StringRef Str, unsigned LocCookie) const;
void EmitInlineAsm(StringRef Str, const MDNode *LocMDNode = 0) const;
/// EmitInlineAsm - This method formats and emits the specified machine
/// instruction that is an inline asm.

2
lib/CodeGen/AsmPrinter/AsmPrinter.cpp
View File

@ -178,7 +178,7 @@ bool AsmPrinter::doInitialization(Module &M) {
if (!M.getModuleInlineAsm().empty()) {
OutStreamer.AddComment("Start of file scope inline assembly");
OutStreamer.AddBlankLine();
EmitInlineAsm(M.getModuleInlineAsm()+"\n", 0/*no loc cookie*/);
EmitInlineAsm(M.getModuleInlineAsm()+"\n");
OutStreamer.AddComment("End of file scope inline assembly");
OutStreamer.AddBlankLine();
}

27
lib/CodeGen/AsmPrinter/AsmPrinterInlineAsm.cpp
View File

@ -35,7 +35,7 @@
using namespace llvm;
/// EmitInlineAsm - Emit a blob of inline asm to the output streamer.
void AsmPrinter::EmitInlineAsm(StringRef Str, unsigned LocCookie) const {
void AsmPrinter::EmitInlineAsm(StringRef Str, const MDNode *LocMDNode) const {
assert(!Str.empty() && "Can't emit empty inline asm block");
// Remember if the buffer is nul terminated or not so we can avoid a copy.
@ -57,6 +57,12 @@ void AsmPrinter::EmitInlineAsm(StringRef Str, unsigned LocCookie) const {
LLVMContext &LLVMCtx = MMI->getModule()->getContext();
bool HasDiagHandler = false;
if (void *DiagHandler = LLVMCtx.getInlineAsmDiagnosticHandler()) {
unsigned LocCookie = 0;
if (LocMDNode && LocMDNode->getNumOperands() > 0)
if (const ConstantInt *CI =
dyn_cast<ConstantInt>(LocMDNode->getOperand(0)))
LocCookie = CI->getZExtValue();
SrcMgr.setDiagHandler((SourceMgr::DiagHandlerTy)(intptr_t)DiagHandler,
LLVMCtx.getInlineAsmDiagnosticContext(), LocCookie);
HasDiagHandler = true;
@ -128,15 +134,16 @@ void AsmPrinter::EmitInlineAsm(const MachineInstr *MI) const {
// Get the !srcloc metadata node if we have it, and decode the loc cookie from
// it.
unsigned LocCookie = 0;
const MDNode *LocMD = 0;
for (unsigned i = MI->getNumOperands(); i != 0; --i) {
if (MI->getOperand(i-1).isMetadata())
if (const MDNode *SrcLoc = MI->getOperand(i-1).getMetadata())
if (SrcLoc->getNumOperands() != 0)
if (const ConstantInt *CI =
dyn_cast<ConstantInt>(SrcLoc->getOperand(0))) {
LocCookie = CI->getZExtValue();
break;
}
if (MI->getOperand(i-1).isMetadata() &&
(LocMD = MI->getOperand(i-1).getMetadata()) &&
LocMD->getNumOperands() != 0) {
if (const ConstantInt *CI = dyn_cast<ConstantInt>(LocMD->getOperand(0))) {
LocCookie = CI->getZExtValue();
break;
}
}
}
// Emit the inline asm to a temporary string so we can emit it through
@ -310,7 +317,7 @@ void AsmPrinter::EmitInlineAsm(const MachineInstr *MI) const {
}
}
OS << '\n' << (char)0; // null terminate string.
EmitInlineAsm(OS.str(), LocCookie);
EmitInlineAsm(OS.str(), LocMD);
// Emit the #NOAPP end marker. This has to happen even if verbose-asm isn't
// enabled, so we use EmitRawText.