// Copyright 2009 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. // Debug arguments, set by -d flag. package base // Debug holds the parsed debugging configuration values. var Debug DebugFlags // DebugFlags defines the debugging configuration values (see var Debug). // Each struct field is a different value, named for the lower-case of the field name. // Each field must be an int or string and must have a `help` struct tag. // // The -d option takes a comma-separated list of settings. // Each setting is name=value; for ints, name is short for name=1. type DebugFlags struct { AlignHot int `help:"enable hot block alignment (currently requires -pgo)" concurrent:"ok"` Append int `help:"print information about append compilation"` Checkptr int `help:"instrument unsafe pointer conversions\n0: instrumentation disabled\n1: conversions involving unsafe.Pointer are instrumented\n2: conversions to unsafe.Pointer force heap allocation" concurrent:"ok"` Closure int `help:"print information about closure compilation"` Defer int `help:"print information about defer compilation"` DisableNil int `help:"disable nil checks" concurrent:"ok"` DumpInlFuncProps string `help:"dump function properties from inl heuristics to specified file"` DumpInlCallSiteScores int `help:"dump scored callsites during inlining"` InlScoreAdj string `help:"set inliner score adjustments (ex: -d=inlscoreadj=panicPathAdj:10/passConstToNestedIfAdj:-90)"` InlBudgetSlack int `help:"amount to expand the initial inline budget when new inliner enabled. Defaults to 80 if option not set." concurrent:"ok"` DumpPtrs int `help:"show Node pointers values in dump output"` DwarfInl int `help:"print information about DWARF inlined function creation"` EscapeMutationsCalls int `help:"print extra escape analysis diagnostics about mutations and calls" concurrent:"ok"` Export int `help:"print export data"` FIPSHash string `help:"hash value for FIPS debugging" concurrent:"ok"` Fmahash string `help:"hash value for use in debugging platform-dependent multiply-add use" concurrent:"ok"` GCAdjust int `help:"log adjustments to GOGC" concurrent:"ok"` GCCheck int `help:"check heap/gc use by compiler" concurrent:"ok"` GCProg int `help:"print dump of GC programs"` Gossahash string `help:"hash value for use in debugging the compiler"` InlFuncsWithClosures int `help:"allow functions with closures to be inlined" concurrent:"ok"` InlStaticInit int `help:"allow static initialization of inlined calls" concurrent:"ok"` Libfuzzer int `help:"enable coverage instrumentation for libfuzzer"` LoopVar int `help:"shared (0, default), 1 (private loop variables), 2, private + log"` LoopVarHash string `help:"for debugging changes in loop behavior. Overrides experiment and loopvar flag."` LocationLists int `help:"print information about DWARF location list creation"` MaxShapeLen int `help:"hash shape names longer than this threshold (default 500)" concurrent:"ok"` MergeLocals int `help:"merge together non-interfering local stack slots" concurrent:"ok"` MergeLocalsDumpFunc string `help:"dump specified func in merge locals"` MergeLocalsHash string `help:"hash value for debugging stack slot merging of local variables" concurrent:"ok"` MergeLocalsTrace int `help:"trace debug output for locals merging"` MergeLocalsHTrace int `help:"hash-selected trace debug output for locals merging"` Nil int `help:"print information about nil checks"` NoDeadLocals int `help:"disable deadlocals pass" concurrent:"ok"` NoOpenDefer int `help:"disable open-coded defers" concurrent:"ok"` NoRefName int `help:"do not include referenced symbol names in object file" concurrent:"ok"` PCTab string `help:"print named pc-value table\nOne of: pctospadj, pctofile, pctoline, pctoinline, pctopcdata"` Panic int `help:"show all compiler panics"` Reshape int `help:"print information about expression reshaping"` Shapify int `help:"print information about shaping recursive types"` Slice int `help:"print information about slice compilation"` SoftFloat int `help:"force compiler to emit soft-float code" concurrent:"ok"` StaticCopy int `help:"print information about missed static copies" concurrent:"ok"` SyncFrames int `help:"how many writer stack frames to include at sync points in unified export data"` TailCall int `help:"print information about tail calls"` TypeAssert int `help:"print information about type assertion inlining"` WB int `help:"print information about write barriers"` ABIWrap int `help:"print information about ABI wrapper generation"` MayMoreStack string `help:"call named function before all stack growth checks" concurrent:"ok"` PGODebug int `help:"debug profile-guided optimizations"` PGOHash string `help:"hash value for debugging profile-guided optimizations" concurrent:"ok"` PGOInline int `help:"enable profile-guided inlining" concurrent:"ok"` PGOInlineCDFThreshold string `help:"cumulative threshold percentage for determining call sites as hot candidates for inlining" concurrent:"ok"` PGOInlineBudget int `help:"inline budget for hot functions" concurrent:"ok"` PGODevirtualize int `help:"enable profile-guided devirtualization; 0 to disable, 1 to enable interface devirtualization, 2 to enable function devirtualization" concurrent:"ok"` RangeFuncCheck int `help:"insert code to check behavior of range iterator functions" concurrent:"ok"` WrapGlobalMapDbg int `help:"debug trace output for global map init wrapping"` WrapGlobalMapCtl int `help:"global map init wrap control (0 => default, 1 => off, 2 => stress mode, no size cutoff)"` ZeroCopy int `help:"enable zero-copy string->[]byte conversions" concurrent:"ok"` ConcurrentOk bool // true if only concurrentOk flags seen } // DebugSSA is called to set a -d ssa/... option. // If nil, those options are reported as invalid options. // If DebugSSA returns a non-empty string, that text is reported as a compiler error. var DebugSSA func(phase, flag string, val int, valString string) string