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cmd/compile: factor out code to generate equal func 

So next CL can use it for generating equal func during walk compare.

Passes toolstash-check.

Change-Id: I76545c1d471eb496be352908db1b05feae83fc33
Reviewed-on: https://go-review.googlesource.com/c/go/+/436435
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
Cuong Manh Le 2022-09-28 10:20:25 +07:00
parent 32284526c8
commit ea3054aecc
1 changed files with 12 additions and 6 deletions
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18
src/cmd/compile/internal/reflectdata/alg.go
View File

@ -342,17 +342,27 @@ func geneq(t *types.Type) *obj.LSym {
if len(closure.P) > 0 { // already generated
return closure
}
sym := TypeSymPrefix(".eq", t)
if base.Flag.LowerR != 0 {
fmt.Printf("geneq %v\n", t)
}
fn := eqFunc(t)
// Generate a closure which points at the function we just generated.
objw.SymPtr(closure, 0, fn.Linksym(), 0)
objw.Global(closure, int32(types.PtrSize), obj.DUPOK|obj.RODATA)
return closure
}
func eqFunc(t *types.Type) *ir.Func {
// Autogenerate code for equality of structs and arrays.
base.Pos = base.AutogeneratedPos // less confusing than end of input
typecheck.DeclContext = ir.PEXTERN
// func sym(p, q *T) bool
sym := TypeSymPrefix(".eq", t)
fn := typecheck.DeclFunc(sym, nil,
[]*ir.Field{ir.NewField(base.Pos, typecheck.Lookup("p"), types.NewPtr(t)), ir.NewField(base.Pos, typecheck.Lookup("q"), types.NewPtr(t))},
[]*ir.Field{ir.NewField(base.Pos, typecheck.Lookup("r"), types.Types[types.TBOOL])},
@ -554,11 +564,7 @@ func geneq(t *types.Type) *obj.LSym {
// are shallow.
fn.SetNilCheckDisabled(true)
typecheck.Target.Decls = append(typecheck.Target.Decls, fn)
// Generate a closure which points at the function we just generated.
objw.SymPtr(closure, 0, fn.Linksym(), 0)
objw.Global(closure, int32(types.PtrSize), obj.DUPOK|obj.RODATA)
return closure
return fn
}
func anyCall(fn *ir.Func) bool {