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Differential D35844 Diff 109065 lib/CodeGen/PrologEpilogInserter.cpp

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	/// insertPrologEpilogCode - Scan the function for modified callee saved			/// insertPrologEpilogCode - Scan the function for modified callee saved
	/// registers, insert spill code for these callee saved registers, then add			/// registers, insert spill code for these callee saved registers, then add
	/// prolog and epilog code to the function.			/// prolog and epilog code to the function.
	///			///
	void PEI::insertPrologEpilogCode(MachineFunction &Fn) {			void PEI::insertPrologEpilogCode(MachineFunction &Fn) {
	const TargetFrameLowering &TFI = *Fn.getSubtarget().getFrameLowering();			const TargetFrameLowering &TFI = *Fn.getSubtarget().getFrameLowering();

				// Set initial incoming and outgoing cfa offset and register values for basic
				// blocks.
				TFI.initializeCFIInfo(Fn);

	// Add prologue to the function...			// Add prologue to the function...
	for (MachineBasicBlock *SaveBlock : SaveBlocks)			for (MachineBasicBlock *SaveBlock : SaveBlocks)
	TFI.emitPrologue(Fn, *SaveBlock);			TFI.emitPrologue(Fn, *SaveBlock);

	// Add epilogue to restore the callee-save registers in each exiting block.			// Add epilogue to restore the callee-save registers in each exiting block.
	for (MachineBasicBlock *RestoreBlock : RestoreBlocks)			for (MachineBasicBlock *RestoreBlock : RestoreBlocks)
	TFI.emitEpilogue(Fn, *RestoreBlock);			TFI.emitEpilogue(Fn, *RestoreBlock);

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