[Bug other/85614] New: Documentation: -fdump-tree should mention "original"

[krblock at computer dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85614

            Bug ID: 85614
           Summary: Documentation: -fdump-tree should mention "original"
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
          Assignee: unassigned at gcc dot gnu.org
          Reporter: krblock at computer dot org
  Target Milestone: ---

In the -fdump-tree option a "switch" is specified to select when you want the
dump. To determine the "switch", it suggests "-fdump-passes" be used. However,
this does not list "original" which is also a possible choice. This should be
explicitly listed in the documentation. Not sure if there are other not listed
"switches". Also the term "switch" is odd. "pass" might be a more intuitive
name.

https://gcc.gnu.org/onlinedocs/gcc/Developer-Options.html

-fdump-tree-all
-fdump-tree-switch
-fdump-tree-switch-options
-fdump-tree-switch-options=filename

...

1. Invoke GCC with -fdump-passes and in the stderr output look for a code that
corresponds to the pass you are interested in. For example, the codes
tree-evrp, tree-vrp1, and tree-vrp2 correspond to the three Value Range
Propagation passes. The number at the end distinguishes distinct invocations of
the same pass.