go/src/cmd/compile/internal/dwarfgen/dwinl.go

type varPos …

// This is the main entry point for collection of raw material to
// drive generation of DWARF "inlined subroutine" DIEs. See proposal
// 22080 for more details and background info.
func assembleInlines(fnsym *obj.LSym, dwVars []*dwarf.Var) dwarf.InlCalls { … }

// Secondary hook for DWARF inlined subroutine generation. This is called
// late in the compilation when it is determined that we need an
// abstract function DIE for an inlined routine imported from a
// previously compiled package.
func AbstractFunc(fn *obj.LSym) { … }

// Given a function that was inlined as part of the compilation, dig
// up the pre-inlining DCL list for the function and create a map that
// supports lookup of pre-inline dcl index, based on variable
// position/name. NB: the recipe for computing variable pos/file/line
// needs to be kept in sync with the similar code in gc.createSimpleVars
// and related functions.
func makePreinlineDclMap(fnsym *obj.LSym) map[varPos]int { … }

func insertInlCall(dwcalls *dwarf.InlCalls, inlIdx int, imap map[int]int) int { … }

// Given a src.XPos, return its associated inlining index if it
// corresponds to something created as a result of an inline, or -1 if
// there is no inline info. Note that the index returned will refer to
// the deepest call in the inlined stack, e.g. if you have "A calls B
// calls C calls D" and all three callees are inlined (B, C, and D),
// the index for a node from the inlined body of D will refer to the
// call to D from C. Whew.
func posInlIndex(xpos src.XPos) int { … }

func addRange(calls []dwarf.InlCall, start, end int64, ii int, imap map[int]int) { … }

func dumpInlCall(inlcalls dwarf.InlCalls, idx, ilevel int) { … }

func dumpInlCalls(inlcalls dwarf.InlCalls) { … }

func dumpInlVars(dwvars []*dwarf.Var) { … }

func rangesContains(par []dwarf.Range, rng dwarf.Range) (bool, string) { … }

func rangesContainsAll(parent, child []dwarf.Range) (bool, string) { … }

// checkInlCall verifies that the PC ranges for inline info 'idx' are
// enclosed/contained within the ranges of its parent inline (or if
// this is a root/toplevel inline, checks that the ranges fall within
// the extent of the top level function). A panic is issued if a
// malformed range is found.
func checkInlCall(funcName string, inlCalls dwarf.InlCalls, funcSize int64, idx, parentIdx int) { … }

// unifyCallRanges ensures that the ranges for a given inline
// transitively include all of the ranges for its child inlines.
func unifyCallRanges(inlcalls dwarf.InlCalls, idx int) { … }