1 files changed, 20 insertions, 0 deletions
diff --git a/test/CodeGen/BPF/atomics.ll b/test/CodeGen/BPF/atomics.ll
new file mode 100644
index 0000000..2f9730d
--- /dev/null
+++ b/test/CodeGen/BPF/atomics.ll
@@ -0,0 +1,20 @@
+; RUN: llc < %s -march=bpf -verify-machineinstrs -show-mc-encoding | FileCheck %s
+; test little endian only for now
+
+; CHECK-LABEL: test_load_add_32
+; CHECK: xadd32
+; CHECK: encoding: [0xc3
+define void @test_load_add_32(i32* %p, i32 zeroext %v) {
+entry:
+  atomicrmw add i32* %p, i32 %v seq_cst
+  ret void
+}
+
+; CHECK-LABEL: test_load_add_64
+; CHECK: xadd64
+; CHECK: encoding: [0xdb
+define void @test_load_add_64(i64* %p, i64 zeroext %v) {
+entry:
+  atomicrmw add i64* %p, i64 %v seq_cst
+  ret void
+}