compiler, runtime: support and use single argument go:linkname

    
    The gc compiler has started permitting go:linkname comments with a
    single argument to mean that a function should be externally visible
    outside the package.  Implement this in the Go frontend.
    
    Change the libgo runtime package to use it, rather than repeating the
    name just to export a function.
    
    Remove a couple of unnecessary go:linkname comments on declarations.
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/192197

From-SVN: r275239

1 files changed, 6 insertions, 7 deletions

diff --git a/libgo/go/runtime/slice.go b/libgo/go/runtime/slice.go
index 9137951..4b15f82 100644
--- a/libgo/go/runtime/slice.go
+++ b/libgo/go/runtime/slice.go
@@ -10,14 +10,13 @@ import (
 	"unsafe"
 )
 
-// For gccgo, use go:linkname to rename compiler-called functions to
-// themselves, so that the compiler will export them.
+// For gccgo, use go:linkname to export compiler-called functions.
 //
-//go:linkname makeslice runtime.makeslice
-//go:linkname makeslice64 runtime.makeslice64
-//go:linkname growslice runtime.growslice
-//go:linkname slicecopy runtime.slicecopy
-//go:linkname slicestringcopy runtime.slicestringcopy
+//go:linkname makeslice
+//go:linkname makeslice64
+//go:linkname growslice
+//go:linkname slicecopy
+//go:linkname slicestringcopy
 
 type slice struct {
 	array unsafe.Pointer