vendor/llvm/llvm-trunk-r300422

1 files changed, 35 insertions, 0 deletions

diff --git a/test/CodeGen/AMDGPU/internalize.ll b/test/CodeGen/AMDGPU/internalize.ll
new file mode 100644
index 000000000000..968b1d326a76
--- /dev/null
+++ b/test/CodeGen/AMDGPU/internalize.ll
@@ -0,0 +1,35 @@
+; RUN: opt -O1 -S -mtriple=amdgcn-unknown-amdhsa -amdgpu-internalize-symbols < %s | FileCheck %s
+; CHECK-NOT: unused
+; CHECK-NOT: foo_used
+; CHECK: gvar_used
+; CHECK: main_kernel
+
+@gvar_unused = addrspace(1) global i32 undef, align 4
+@gvar_used = addrspace(1) global i32 undef, align 4
+
+; Function Attrs: alwaysinline nounwind
+define amdgpu_kernel void @foo_unused(i32 addrspace(1)* %out) local_unnamed_addr #1 {
+entry:
+  store i32 1, i32 addrspace(1)* %out
+  ret void
+}
+
+; Function Attrs: alwaysinline nounwind
+define amdgpu_kernel void @foo_used(i32 addrspace(1)* %out, i32 %tid) local_unnamed_addr #1 {
+entry:
+  store i32 %tid, i32 addrspace(1)* %out
+  ret void
+}
+
+define amdgpu_kernel void @main_kernel() {
+entry:
+  %tid = call i32 @llvm.amdgcn.workitem.id.x()
+  tail call void @foo_used(i32 addrspace(1)* @gvar_used, i32 %tid) nounwind
+  ret void
+}
+
+declare i32 @llvm.amdgcn.workitem.id.x() #0
+
+attributes #0 = { nounwind readnone }
+
+attributes #1 = { alwaysinline nounwind }