From 674b506bb215a4949b343929337428e79b9ac327 Mon Sep 17 00:00:00 2001
From: Ayke van Laethem <aykevanlaethem@gmail.com>
Date: Thu, 30 Aug 2018 22:38:21 +0200
Subject: [PATCH] Replace compiler hack for sync package with //go:linkname

---
 compiler.go         |  5 -----
 src/runtime/sync.go | 13 +++++++++++++
 2 files changed, 13 insertions(+), 5 deletions(-)
 create mode 100644 src/runtime/sync.go

diff --git a/compiler.go b/compiler.go
index dee6c5eb..5b48e7b1 100644
--- a/compiler.go
+++ b/compiler.go
@@ -1325,11 +1325,6 @@ func (c *Compiler) parseBuiltin(frame *Frame, args []ssa.Value, callName string)
 }
 
 func (c *Compiler) parseFunctionCall(frame *Frame, args []ssa.Value, llvmFn llvm.Value, blocking bool, parentHandle llvm.Value) (llvm.Value, error) {
-	if llvmFn.Name() == "sync.runtime_registerPoolCleanup" || llvmFn.Name() == "sync.runtime_notifyListCheck" {
-		// Ignore these functions calls for now, as a hack.
-		// TODO: implement //go:linkname.
-		return llvm.Value{}, nil
-	}
 	var params []llvm.Value
 	if blocking {
 		if parentHandle.IsNil() {
diff --git a/src/runtime/sync.go b/src/runtime/sync.go
new file mode 100644
index 00000000..765ecba2
--- /dev/null
+++ b/src/runtime/sync.go
@@ -0,0 +1,13 @@
+package runtime
+
+// This file contains support code for the sync package.
+
+//go:linkname registerPoolCleanup sync.runtime_registerPoolCleanup
+func registerPoolCleanup(cleanup func()) {
+	// Ignore.
+}
+
+//go:linkname notifyListCheck sync.runtime_notifyListCheck
+func notifyListCheck(size uintptr) {
+	// Ignore.
+}