1 files changed, 24 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/arm64-stackpointer.ll b/test/CodeGen/AArch64/arm64-stackpointer.ll
new file mode 100644
index 0000000..581faf1
--- /dev/null
+++ b/test/CodeGen/AArch64/arm64-stackpointer.ll
@@ -0,0 +1,24 @@
+; RUN: llc < %s -mtriple=arm64-linux-gnu | FileCheck %s
+
+define i64 @get_stack() nounwind {
+entry:
+; CHECK-LABEL: get_stack:
+; CHECK: mov   x0, sp
+	%sp = call i64 @llvm.read_register.i64(metadata !0)
+  ret i64 %sp
+}
+
+define void @set_stack(i64 %val) nounwind {
+entry:
+; CHECK-LABEL: set_stack:
+; CHECK: mov   sp, x0
+  call void @llvm.write_register.i64(metadata !0, i64 %val)
+  ret void
+}
+
+declare i64 @llvm.read_register.i64(metadata) nounwind
+declare void @llvm.write_register.i64(metadata, i64) nounwind
+
+; register unsigned long current_stack_pointer asm("sp");
+; CHECK-NOT: .asciz  "sp"
+!0 = metadata !{metadata !"sp\00"}