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Differential D137497 Diff 473455 llvm/lib/Transforms/IPO/ArgumentPromotion.cpp

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llvm/lib/Transforms/IPO/ArgumentPromotion.cpp

Show First 20 Lines • Show All 811 Lines • ▼ Show 20 Lines	do {
LocalChange = false;		LocalChange = false;

FunctionAnalysisManager &FAM =		FunctionAnalysisManager &FAM =
AM.getResult<FunctionAnalysisManagerCGSCCProxy>(C, CG).getManager();		AM.getResult<FunctionAnalysisManagerCGSCCProxy>(C, CG).getManager();

bool IsRecursive = C.size() > 1;		bool IsRecursive = C.size() > 1;
for (LazyCallGraph::Node &N : C) {		for (LazyCallGraph::Node &N : C) {
Function &OldF = N.getFunction();		Function &OldF = N.getFunction();
Function *NewF = promoteArguments(&OldF, FAM, MaxElements, IsRecursive);
		// If the IR specifies a maximum element count via !argpromotion
		// metadata, take that into account.
		unsigned MaxElems = MaxElements;
		if (MDNode *MD = OldF.getMetadata("argpromotion"))
		MaxElems =
		mdconst::extract<ConstantInt>(MD->getOperand(0))->getZExtValue();

		if (MaxElems == 0)
		continue;

		Function *NewF = promoteArguments(&OldF, FAM, MaxElems, IsRecursive);
if (!NewF)		if (!NewF)
continue;		continue;
LocalChange = true;		LocalChange = true;

// Directly substitute the functions in the call graph. Note that this		// Directly substitute the functions in the call graph. Note that this
// requires the old function to be completely dead and completely		// requires the old function to be completely dead and completely
// replaced by the new function. It does no call graph updates, it merely		// replaced by the new function. It does no call graph updates, it merely
// swaps out the particular function mapped to a particular node in the		// swaps out the particular function mapped to a particular node in the
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