Please sign in to comment.
cmd/compile: provide a way to auto-discover -d debug keys
Currently one needs to refer to the sources to have a list of accepted debug keys. We can copy what 'ssa/help' does and introspect the list of debug keys to print a more detailed help: $ go tool compile -d help usage: -d arg[,arg]* and arg is <key>[=<value>] <key> is one of: append print information about append compilation closure print information about closure compilation disablenil disable nil checks dclstack run internal dclstack check gcprog print dump of GC programs nil print information about nil checks panic do not hide any compiler panic slice print information about slice compilation typeassert print information about type assertion inlining wb print information about write barriers export print export data pctab print named pc-value table ssa/help print help about SSA debugging <value> is key-specific. Key "pctab" supports values: "pctospadj", "pctofile", "pctoline", "pctoinline", "pctopcdata" For '-d help' to be discoverable, a hint is given in the -d flag description. A last thing, today at least one go file needs to be provided to get to the code printing ssa/help. $ go tool compile -d ssa/help foo.go Add a check so one can just do '-d help' or '-d ssa/help' Caught by trybot: I needed to update fmt_test.go as I'm introducing the usage of %-*s in a format string. Fixes #20041 Change-Id: Ib2858b038c1bcbe644aa3b1a371009710c6d957d Reviewed-on: https://go-review.googlesource.com/41091 Run-TryBot: Alberto Donizetti <firstname.lastname@example.org> TryBot-Result: Gobot Gobot <email@example.com> Reviewed-by: David Chase <firstname.lastname@example.org>
- Loading branch information...
Showing with 46 additions and 14 deletions.