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6 Commits

Author SHA1 Message Date
Matthew Dempsky
5355753009 [dev.typeparams] test/typeparam: gofmt -w
We don't usually reformat the test directory, but all of the files in
test/typeparam are syntactically valid. I suspect the misformattings
here are because developers aren't re-installing gofmt with
-tags=typeparams, not intentionally exercising non-standard
formatting.

Change-Id: I3767d480434c19225568f3c7d656dc8589197183
Reviewed-on: https://go-review.googlesource.com/c/go/+/338093
Trust: Matthew Dempsky <mdempsky@google.com>
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
2021-07-28 21:40:40 +00:00
Dan Scales
b4844c9f54 [dev.typeparams] cmd/compile: handle the (*T).M method expression with dictionaries
The (*T).M method expression is where M is a value method, but the type
(*T) is a pointer to the main type. In this case, after following any
embedded fields, we need to add an extra star operator when using the
receiver arg in the closure call.

Thanks to Cuong for finding/pointing out an example for this case
(typeparam/mdempsky/14.go) This example also shows that we now need the
ability to export/import OEFACE and OIDATA, which I added.

Change-Id: Ida0f81ce757fff78fec6276c60052ed71d207454
Reviewed-on: https://go-review.googlesource.com/c/go/+/333014
Run-TryBot: Dan Scales <danscales@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Dan Scales <danscales@google.com>
2021-07-07 17:31:57 +00:00
Dan Scales
ddb09af1b8 [dev.typeparams] cmd/compile: add derived types and subdictionaries to dictionaries
This is code in progress to generate the two main other types of entries
in dictionaries:
 - all types in the instantiated function derived from the type
   arguments (which are currently concrete, but will eventually be
   gcshapes)
 - pointers (i.e. mainly the unique name) to all needed sub-dictionaries

In order to generate these entries, we now generate cached information
gfInfo about generic functions/methods that can be used for creating the
instantiated dictionaries. We use the type substituter to compute the
right type args for instantiated sub-dictionaries.

If infoPrintMode is changed to true, the code prints out all the
information gathered about generic functions, and also the entries in
all the dictionaries that are instantiated. The debug mode also prints
out the locations where we need main dictionaries in non-instantiated
functions.

Other changes:
 - Moved the dictionary generation back to stencil.go from reflect.go,
   since we need to do extra analysis for the new dictionary entries. In
   the process, made getInstantiation generate both the function
   instantiation and the associated dictionary.

 - Put in small change for now in reflect.go, so that we don't try
   generate separate dictionaries for Value[T].get and the
   auto-generated (*Value[T]).get.  The auto-generated wrapper shouldn't really
   need a dictionary.

 - Detected, but not handling yet, a new case which needs
   dictionaries - closures that have function params or captured
   variables whose types are derived from type arguments.

 - Added new tests in dictionaryCapture for use of method
   value/expressions in generic functions and for mutually recursive
   generic functions.

Change-Id: If0cbde8805a9f673a23f5ec798769c85c9c5359b
Reviewed-on: https://go-review.googlesource.com/c/go/+/327311
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2021-06-24 20:11:51 +00:00
Matthew Dempsky
db7c868307 [dev.typeparams] test: add string quoting support to test/run.go
This CL copies go/build's splitQuoted function (used for parsing #cgo
directives within `import "C"` preambles) to parse test recipe
commands. In particular, this now allows writing "build" and "run"
tests that use -gcflags to pass multiple compiler flags.

Change-Id: I0d18a9c13a4ce24bbdfa1da8662c0498c93a6762
Reviewed-on: https://go-review.googlesource.com/c/go/+/327275
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
2021-06-12 14:36:25 +00:00
Keith Randall
bad388744b [dev.typeparams] cmd/compile: handle dictionaries for top-level instantiations
There's no outer function in these cases, so we won't be reading
the dictionary as a subdictionary from the outer scope's dictionary.
It will always be a compile-time constant.

Change-Id: I754b126652a6ffb62255734d53fcec29d77cfa9e
Reviewed-on: https://go-review.googlesource.com/c/go/+/324949
Trust: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
Reviewed-by: Dan Scales <danscales@google.com>
2021-06-04 18:11:39 +00:00
Keith Randall
7b876def6c [dev.typeparams] cmd/compile: add dictionary argument to generic functions
When converting from a generic function to a concrete implementation,
add a dictionary argument to the generic function (both an actual
argument at each callsite, and a formal argument of each
implementation).

The dictionary argument comes before all other arguments (including
any receiver).

The dictionary argument is checked for validity, but is otherwise unused.
Subsequent CLs will start using the dictionary for, e.g., converting a
value of generic type to interface{}.

Import/export required adding support for LINKSYMOFFSET, which is used
by the dictionary checking code.

Change-Id: I16a7a8d23c7bd6a897e0da87c69f273be9103bd7
Reviewed-on: https://go-review.googlesource.com/c/go/+/323272
Trust: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
2021-06-02 20:23:12 +00:00