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Diffstat (limited to 'src/cmd/compile/internal/base/debug.go')
| -rw-r--r-- | src/cmd/compile/internal/base/debug.go | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/base/debug.go b/src/cmd/compile/internal/base/debug.go new file mode 100644 index 0000000..1f05ed9 --- /dev/null +++ b/src/cmd/compile/internal/base/debug.go @@ -0,0 +1,67 @@ +// 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"` + DumpPtrs int `help:"show Node pointers values in dump output"` + DwarfInl int `help:"print information about DWARF inlined function creation"` + 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"` + InterfaceCycles int `help:"allow anonymous interface cycles"` + 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"` + 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"` + 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"` + 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" 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)"` + + 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 |