ssa: prog.linkname; abi llvm.LinkOnceAnyLinkage always

ssa/abitype.go

@@ -431,9 +431,7 @@ func (b Builder) loadType(t types.Type) Global {
 		prog := b.Prog
 		g = pkg.doNewVar(name, prog.AbiTypePtrPtr())
 		g.InitNil()
-		if pub {
-			g.impl.SetLinkage(llvm.LinkOnceAnyLinkage)
-		}
+		g.impl.SetLinkage(llvm.LinkOnceAnyLinkage)
 		pkg.abiTypeInit(g, t, pub)
 	}
 	return g

ssa/package.go

@@ -191,6 +191,7 @@ type aProgram struct {
 	sigljmpTy   *types.Signature
 
 	paramObjPtr_ *types.Var
+	linkname     map[string]string // pkgPath.nameInPkg => linkname
 
 	ptrSize int
 
@@ -227,6 +228,7 @@ func NewProgram(target *Target) Program {
 		ctx: ctx, gocvt: newGoTypes(),
 		target: target, td: td, is32Bits: is32Bits,
 		ptrSize: td.PointerSize(), named: make(map[string]llvm.Type), fnnamed: make(map[string]int),
+		linkname: make(map[string]string),
 	}
 }
 
@@ -245,6 +247,15 @@ func (p Program) SetTypeBackground(fullName string, bg Background) {
 	p.gocvt.typbg[fullName] = bg
 }
 
+func (p Program) SetLinkname(name, link string) {
+	p.linkname[name] = link
+}
+
+func (p Program) Linkname(name string) (link string, ok bool) {
+	link, ok = p.linkname[name]
+	return
+}
+
 func (p Program) runtime() *types.Package {
 	if p.rt == nil {
 		p.rt = p.rtget()