| // 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 { |
| 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"` |
| 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"` |
| 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"` |
| 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 |
