debug.go

     1  // Copyright 2009 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // Debug arguments, set by -d flag.
     6  
     7  package base
     8  
     9  // Debug holds the parsed debugging configuration values.
    10  var Debug DebugFlags
    11  
    12  // DebugFlags defines the debugging configuration values (see var Debug).
    13  // Each struct field is a different value, named for the lower-case of the field name.
    14  // Each field must be an int or string and must have a `help` struct tag.
    15  //
    16  // The -d option takes a comma-separated list of settings.
    17  // Each setting is name=value; for ints, name is short for name=1.
    18  type DebugFlags struct {
    19  	Append               int    `help:"print information about append compilation"`
    20  	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"`
    21  	Closure              int    `help:"print information about closure compilation"`
    22  	DclStack             int    `help:"run internal dclstack check"`
    23  	Defer                int    `help:"print information about defer compilation"`
    24  	DisableNil           int    `help:"disable nil checks"`
    25  	DumpPtrs             int    `help:"show Node pointers values in dump output"`
    26  	DwarfInl             int    `help:"print information about DWARF inlined function creation"`
    27  	Export               int    `help:"print export data"`
    28  	GCProg               int    `help:"print dump of GC programs"`
    29  	InlFuncsWithClosures int    `help:"allow functions with closures to be inlined"`
    30  	Libfuzzer            int    `help:"enable coverage instrumentation for libfuzzer"`
    31  	LocationLists        int    `help:"print information about DWARF location list creation"`
    32  	Nil                  int    `help:"print information about nil checks"`
    33  	NoOpenDefer          int    `help:"disable open-coded defers"`
    34  	PCTab                string `help:"print named pc-value table\nOne of: pctospadj, pctofile, pctoline, pctoinline, pctopcdata"`
    35  	Panic                int    `help:"show all compiler panics"`
    36  	Slice                int    `help:"print information about slice compilation"`
    37  	SoftFloat            int    `help:"force compiler to emit soft-float code"`
    38  	SyncFrames           int    `help:"how many writer stack frames to include at sync points in unified export data"`
    39  	TypeAssert           int    `help:"print information about type assertion inlining"`
    40  	TypecheckInl         int    `help:"eager typechecking of inline function bodies"`
    41  	Unified              int    `help:"enable unified IR construction"`
    42  	UnifiedQuirks        int    `help:"enable unified IR construction's quirks mode"`
    43  	WB                   int    `help:"print information about write barriers"`
    44  	ABIWrap              int    `help:"print information about ABI wrapper generation"`
    45  	MayMoreStack         string `help:"call named function before all stack growth checks"`
    46  
    47  	Any bool // set when any of the debug flags have been set
    48  }
    49  
    50  // DebugSSA is called to set a -d ssa/... option.
    51  // If nil, those options are reported as invalid options.
    52  // If DebugSSA returns a non-empty string, that text is reported as a compiler error.
    53  var DebugSSA func(phase, flag string, val int, valString string) string
    54
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