llvm::misexpect Namespace Reference

Functions
void	verifyMisExpect (llvm::Instruction *I, const llvm::SmallVector< uint32_t, 4 > &Weights, llvm::LLVMContext &Ctx)
	verifyMisExpect - compares PGO counters to the thresholds used for llvm.expect and warns if the PGO counters are outside of the expected range. More...
void	checkFrontendInstrumentation (Instruction &I)
	checkClangInstrumentation - verify if llvm.expect matches PGO profile This function checks the frontend instrumentation in the backend when lowering llvm.expect intrinsics. More...

Function Documentation

checkFrontendInstrumentation()

void llvm::misexpect::checkFrontendInstrumentation

(

Instruction &

I

)

checkClangInstrumentation - verify if llvm.expect matches PGO profile This function checks the frontend instrumentation in the backend when lowering llvm.expect intrinsics.

It checks for existing metadata, and then validates the use of llvm.expect against the assigned branch weights.

Parameters

I	the Instruction being checked

Definition at line 147 of file MisExpect.cpp.

References llvm::Value::getContext(), llvm::Instruction::getMetadata(), llvm::ConstantInt::getZExtValue(), and verifyMisExpect().

Referenced by handleSwitchExpect().

verifyMisExpect()

void llvm::misexpect::verifyMisExpect	(	llvm::Instruction *	I,
		const llvm::SmallVector< uint32_t, 4 > &	Weights,
		llvm::LLVMContext &	Ctx
	)

verifyMisExpect - compares PGO counters to the thresholds used for llvm.expect and warns if the PGO counters are outside of the expected range.

Parameters

I	The Instruction being checked
Weights	A vector of profile weights for each target block
Ctx	The current LLVM context

Definition at line 95 of file MisExpect.cpp.

References llvm::SmallVectorTemplateCommon< T, typename >::begin(), llvm::dbgs(), llvm::dyn_cast(), llvm::SmallVectorTemplateCommon< T, typename >::end(), llvm::Instruction::getFunction(), llvm::Instruction::getMetadata(), llvm::Value::getName(), LikelyBranchWeight, LLVM_DEBUG, Size, llvm::SmallVectorBase::size(), and UnlikelyBranchWeight.

Referenced by checkFrontendInstrumentation(), GetSortedValueDataFromCallTargets(), and llvm::setProfMetadata().