CreateAliasesForVarbitHeaders Class Reference

Inheritance diagram for CreateAliasesForVarbitHeaders:

Public Member Functions
	CreateAliasesForVarbitHeaders (const PhvInfo &phv, const ClotInfo &clot_info, PragmaAlias &pragma)

Protected Member Functions
void	end_apply () override
Visitor::profile_t	init_apply (const IR::Node *root) override
bool	preorder (const IR::HeaderOrMetadata *h) override

Static Protected Member Functions
static std::pair< cstring, int >	getHeaderBaseAndSize (cstring name)
static bool	isVarbitHeaderPattern (cstring name)

Protected Attributes
const ClotInfo &	clot_info
std::map< gress_t, std::set< cstring > >	desugared_headers
const PhvInfo &	phv
PragmaAlias &	pragma

Detailed Description

Identify headers corresponding to varbit fields that were injected during varbit header desugaring. Create aliases for the validity bits for slices of the same header placed in CLOTs.

Member Function Documentation

end_apply()

void CreateAliasesForVarbitHeaders::end_apply ( )

inlineoverrideprotected

Create aliases for the validity bits for sliced varbit headers that are placed in CLOTS.

getHeaderBaseAndSize()

static std::pair< cstring, int > CreateAliasesForVarbitHeaders::getHeaderBaseAndSize ( cstring name )

inlinestaticprotected

Split the header name into a base and a size

isVarbitHeaderPattern()

static bool CreateAliasesForVarbitHeaders::isVarbitHeaderPattern ( cstring name )

inlinestaticprotected

Check whether the header name matches the varbit header pattern used by DesugarVarbitExtract