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Factor a bit of code to MCStreamer::EmitLabel. Keep track of the last

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non private symbol. This will be use for handling

foo:
  .cfi_startproc
  ...

On OS X where we have to create a foo.eh symbol.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130305 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2011-04-27 15:21:19 +00:00
parent 089a246333
commit ed708f9c1f
5 changed files with 19 additions and 9 deletions
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12
lib/MC/MCStreamer.cpp
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@ -12,6 +12,7 @@
#include "llvm/MC/MCStreamer.h"
#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCObjectWriter.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/ADT/SmallString.h"
@ -153,12 +154,23 @@ void MCStreamer::EnsureValidFrame() {
report_fatal_error("No open frame");
}
void MCStreamer::EmitLabel(MCSymbol *Symbol) {
assert(!Symbol->isVariable() && "Cannot emit a variable symbol!");
assert(getCurrentSection() && "Cannot emit before setting section!");
Symbol->setSection(*getCurrentSection());
StringRef Prefix = getContext().getAsmInfo().getPrivateGlobalPrefix();
if (!Symbol->getName().startswith(Prefix))
LastNonPrivate = Symbol;
}
void MCStreamer::EmitCFIStartProc() {
MCDwarfFrameInfo *CurFrame = getCurrentFrameInfo();
if (CurFrame && !CurFrame->End)
report_fatal_error("Starting a frame before finishing the previous one!");
MCDwarfFrameInfo Frame;
Frame.Begin = getContext().CreateTempSymbol();
Frame.Function = LastNonPrivate;
EmitLabel(Frame.Begin);
FrameInfos.push_back(Frame);
}