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Fix use-of-uninitialized-value of ARMMachineFunctionInfo
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Authored by weimingz on May 7 2016, 5:38 PM.

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Summary

Explicitly initialize ArgumentStackSize to prevent the msan failure.

weimingz retitled this revision from to Fix use-of-uninitialized-value of ARMMachineFunctionInfo.

weimingz updated this object.

weimingz set the repository for this revision to rL LLVM.

weimingz added a subscriber: llvm-commits.

Nice catch!! Thanks for the investigation! Feel free to chain your other commit on the back of this one and lets see how the bot responds.

This revision is now accepted and ready to land.May 7 2016, 5:42 PM

This revision was automatically updated to reflect the committed changes.

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llvm/

trunk/

lib/

Target/

ARM/

2 lines

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	ARMFunctionInfo::ARMFunctionInfo(MachineFunction &MF)			ARMFunctionInfo::ARMFunctionInfo(MachineFunction &MF)
	: isThumb(MF.getSubtarget<ARMSubtarget>().isThumb()),			: isThumb(MF.getSubtarget<ARMSubtarget>().isThumb()),
	hasThumb2(MF.getSubtarget<ARMSubtarget>().hasThumb2()),			hasThumb2(MF.getSubtarget<ARMSubtarget>().hasThumb2()),
	StByValParamsPadding(0), ArgRegsSaveSize(0), HasStackFrame(false),			StByValParamsPadding(0), ArgRegsSaveSize(0), HasStackFrame(false),
	RestoreSPFromFP(false), LRSpilledForFarJump(false),			RestoreSPFromFP(false), LRSpilledForFarJump(false),
	FramePtrSpillOffset(0), GPRCS1Offset(0), GPRCS2Offset(0), DPRCSOffset(0),			FramePtrSpillOffset(0), GPRCS1Offset(0), GPRCS2Offset(0), DPRCSOffset(0),
	GPRCS1Size(0), GPRCS2Size(0), DPRCSSize(0),			GPRCS1Size(0), GPRCS2Size(0), DPRCSSize(0),
	PICLabelUId(0), VarArgsFrameIndex(0), HasITBlocks(false),			PICLabelUId(0), VarArgsFrameIndex(0), HasITBlocks(false),
	IsSplitCSR(false) {}			ArgumentStackSize(0), IsSplitCSR(false) {}