vendor/llvm/llvm-release_33-r183502

1 files changed, 14 insertions, 0 deletions

diff --git a/test/CodeGen/SystemZ/atomic-load-04.ll b/test/CodeGen/SystemZ/atomic-load-04.ll
new file mode 100644
index 000000000000..9593d35fef0c
--- /dev/null
+++ b/test/CodeGen/SystemZ/atomic-load-04.ll
@@ -0,0 +1,14 @@
+; Test 64-bit atomic loads.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; This is just a placeholder to make sure that loads are handled.
+; Using CSG is probably too conservative.
+define i64 @f1(i64 %dummy, i64 *%src) {
+; CHECK: f1:
+; CHECK: lghi %r2, 0
+; CHECK: csg %r2, %r2, 0(%r3)
+; CHECK: br %r14
+  %val = load atomic i64 *%src seq_cst, align 8
+  ret i64 %val
+}