If the function has no machine instructions, then emit a "nop" so that
the function label isn't associated with something it shouldn't be.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46449 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMAsmPrinter.cpp b/lib/Target/ARM/ARMAsmPrinter.cpp
index 1203967..d56f618 100644
--- a/lib/Target/ARM/ARMAsmPrinter.cpp
+++ b/lib/Target/ARM/ARMAsmPrinter.cpp
@@ -233,6 +233,16 @@
// Emit pre-function debug information.
DW.BeginFunction(&MF);
+ if (Subtarget->isTargetDarwin()) {
+ // If the function is empty, then we need to emit *something*. Otherwise,
+ // the function's label might be associated with something that it wasn't
+ // meant to be associated with. We emit a noop in this situation.
+ MachineFunction::iterator I = MF.begin();
+
+ if (++I == MF.end() && MF.front().empty())
+ O << "\tnop\n";
+ }
+
// Print out code for the function.
for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
I != E; ++I) {