Test for 241794 (nest attribute in AArch64)

Forgot to git add the test.

Patch by Stephen Cross.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241797 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/AArch64/nest-register.ll b/test/CodeGen/AArch64/nest-register.ll
new file mode 100644 (file)
index 0000000..9c659fb
--- /dev/null
+++ b/test/CodeGen/AArch64/nest-register.ll
@@ -0,0 +1,23 @@
+; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu | FileCheck %s
+
+; Tests that the 'nest' parameter attribute causes the relevant parameter to be
+; passed in the right register.
+
+define i8* @nest_receiver(i8* nest %arg) nounwind {
+; CHECK-LABEL: nest_receiver:
+; CHECK-NEXT: // BB#0:
+; CHECK-NEXT: mov x0, x18
+; CHECK-NEXT: ret
+
+  ret i8* %arg
+}
+
+define i8* @nest_caller(i8* %arg) nounwind {
+; CHECK-LABEL: nest_caller:
+; CHECK: mov x18, x0
+; CHECK-NEXT: bl nest_receiver
+; CHECK: ret
+
+  %result = call i8* @nest_receiver(i8* nest %arg)
+  ret i8* %result
+}