diff options
Diffstat (limited to 'src/cmd/compile/internal/base/hashdebug.go')
| -rw-r--r-- | src/cmd/compile/internal/base/hashdebug.go | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/src/cmd/compile/internal/base/hashdebug.go b/src/cmd/compile/internal/base/hashdebug.go index 167b0df4f0..de7f01f09e 100644 --- a/src/cmd/compile/internal/base/hashdebug.go +++ b/src/cmd/compile/internal/base/hashdebug.go @@ -55,6 +55,7 @@ var hashDebug *HashDebug var FmaHash *HashDebug // for debugging fused-multiply-add floating point changes var LoopVarHash *HashDebug // for debugging shared/private loop variable changes +var PGOHash *HashDebug // for debugging PGO optimization decisions // DebugHashMatchPkgFunc reports whether debug variable Gossahash // @@ -274,8 +275,36 @@ func (d *HashDebug) MatchPos(pos src.XPos, desc func() string) bool { } func (d *HashDebug) matchPos(ctxt *obj.Link, pos src.XPos, note func() string) bool { + return d.matchPosWithInfo(ctxt, pos, nil, note) +} + +func (d *HashDebug) matchPosWithInfo(ctxt *obj.Link, pos src.XPos, info any, note func() string) bool { hash := d.hashPos(ctxt, pos) - return d.matchAndLog(hash, func() string { return d.fmtPos(ctxt, pos) }, note) + if info != nil { + hash = bisect.Hash(hash, info) + } + return d.matchAndLog(hash, + func() string { + r := d.fmtPos(ctxt, pos) + if info != nil { + r += fmt.Sprintf(" (%v)", info) + } + return r + }, + note) +} + +// MatchPosWithInfo is similar to MatchPos, but with additional information +// that is included for hash computation, so it can distinguish multiple +// matches on the same source location. +// Note that the default answer for no environment variable (d == nil) +// is "yes", do the thing. +func (d *HashDebug) MatchPosWithInfo(pos src.XPos, info any, desc func() string) bool { + if d == nil { + return true + } + // Written this way to make inlining likely. + return d.matchPosWithInfo(Ctxt, pos, info, desc) } // matchAndLog is the core matcher. It reports whether the hash matches the pattern. |