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, 14 insertions, 15 deletions

diff --git a/libgo/go/runtime/iface.go b/libgo/go/runtime/iface.go
index d434f9e..3fa5dd6 100644
--- a/libgo/go/runtime/iface.go
+++ b/libgo/go/runtime/iface.go
@@ -10,23 +10,22 @@ 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 requireitab runtime.requireitab
-//go:linkname assertitab runtime.assertitab
-//go:linkname panicdottype runtime.panicdottype
-//go:linkname ifaceE2E2 runtime.ifaceE2E2
-//go:linkname ifaceI2E2 runtime.ifaceI2E2
-//go:linkname ifaceE2I2 runtime.ifaceE2I2
-//go:linkname ifaceI2I2 runtime.ifaceI2I2
-//go:linkname ifaceE2T2P runtime.ifaceE2T2P
-//go:linkname ifaceI2T2P runtime.ifaceI2T2P
-//go:linkname ifaceE2T2 runtime.ifaceE2T2
-//go:linkname ifaceI2T2 runtime.ifaceI2T2
-//go:linkname ifaceT2Ip runtime.ifaceT2Ip
+//go:linkname requireitab
+//go:linkname assertitab
+//go:linkname panicdottype
+//go:linkname ifaceE2E2
+//go:linkname ifaceI2E2
+//go:linkname ifaceE2I2
+//go:linkname ifaceI2I2
+//go:linkname ifaceE2T2P
+//go:linkname ifaceI2T2P
+//go:linkname ifaceE2T2
+//go:linkname ifaceI2T2
+//go:linkname ifaceT2Ip
 // Temporary for C code to call:
-//go:linkname getitab runtime.getitab
+//go:linkname getitab
 
 // The gccgo itab structure is different than the gc one.
 //