[dev.typeparams] cmd/compile: add OFUNCINST/OTYPEINST nodes for generic func/type instantiation
Expresses things more clearly, especially in cases like 'f := min[int]'
where we create a xsgeneric function instantiation, but don't immediately
call it.
min[int](2, 3) now looks like:
. CALLFUNC tc(1) Use:1 int # min1.go:11 int
. . FUNCINST tc(1) FUNC-func(int, int) int # min1.go:11 FUNC-func(int, int) int
. . . NAME-main.min tc(1) Class:PFUNC Offset:0 Used FUNC-func[T](T, T) T # min1.go:3
. . FUNCINST-Targs
. . . TYPE .int Offset:0 type int
. CALLFUNC-Args
. . LITERAL-2 tc(1) int # min1.go:11
. . LITERAL-3 tc(1) int # min1.go:11
Remove the targs parameter from ir.NewCallExpr(), not needed anymore,
since type arguments are included in the FUNCINST.
Change-Id: I23438b75288330475294d7ace239ba64acfa641e
Reviewed-on: https://go-review.googlesource.com/c/go/+/288951
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Dan Scales <danscales@google.com>
Trust: Robert Griesemer <gri@golang.org> Reviewed-by: Robert Griesemer <gri@golang.org>