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// 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"`
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