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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
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@ -233,6 +233,16 @@ bool ARMAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
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// Emit pre-function debug information.
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DW.BeginFunction(&MF);
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if (Subtarget->isTargetDarwin()) {
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// If the function is empty, then we need to emit *something*. Otherwise,
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// the function's label might be associated with something that it wasn't
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// meant to be associated with. We emit a noop in this situation.
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MachineFunction::iterator I = MF.begin();
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if (++I == MF.end() && MF.front().empty())
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O << "\tnop\n";
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}
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// Print out code for the function.
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for (MachineFunction::const_iterator I = MF.begin(), E = MF.end();
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I != E; ++I) {
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