1 files changed, 22 insertions, 0 deletions
diff --git a/lld/test/wasm/lto/diagnostics.ll b/lld/test/wasm/lto/diagnostics.ll
new file mode 100644
index 00000000000..77f68fe93ab
--- /dev/null
+++ b/lld/test/wasm/lto/diagnostics.ll
@@ -0,0 +1,22 @@
+; verify that errors in the LLVM backend during LTO manifest as lld
+; errors
+
+; RUN: llvm-as %s -o %t.o
+; RUN: not wasm-ld --lto-O0 %t.o -o %t2 2>&1 | FileCheck %s
+
+target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
+target triple = "wasm32-unknown-unknown"
+
+define void @_start() {
+  call i8* @foo()
+  ret void
+}
+
+define i8* @foo() {
+  %1 = call i8* @llvm.returnaddress(i32 0)
+  ret i8* %1
+}
+
+declare i8* @llvm.returnaddress(i32)
+
+; CHECK: error: {{.*}} WebAssembly hasn't implemented __builtin_return_address