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Dan Scales d8e33d558e cmd/compile: deal with closures in generic functions and instantiated function values
- Deal with closures in generic functions by fixing the stenciling code

 - Deal with instantiated function values (instantiated generic
   functions that are not immediately called) during stenciling. This
   requires changing the OFUNCINST node to an ONAME node for the
   appropriately instantiated function. We do this in a second pass,
   since this is uncommon, but requires editing the tree at multiple
   levels.

 - Check global assignments (as well as functions) for generic function
   instantiations.

 - Fix a bug in (*subst).typ where a generic type in a generic function
   may definitely not use all the type args of the function, so we need
   to translate the rparams of the type based on the tparams/targs of
   the function.

 - Added new test combine.go that tests out closures in generic
   functions and instantiated function values.

 - Added one new variant to the settable test.

 - Enabling inlining functions with closures for -G=3. (For now, set
   Ntype on closures in -G=3 mode to keep compatibility with later parts
   of compiler, and allow inlining of functions with closures.)

Change-Id: Iea63d5704c322e42e2f750a83adc8b44f911d4ec
Reviewed-on: https://go-review.googlesource.com/c/go/+/296269
Reviewed-by: Robert Griesemer <gri@golang.org>
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Dan Scales <danscales@google.com>
2021-02-26 18:57:20 +00:00
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