1 files changed, 23 insertions, 0 deletions
diff --git a/test/CodeGen/NVPTX/MachineSink-call.ll b/test/CodeGen/NVPTX/MachineSink-call.ll
new file mode 100644
index 0000000000000..3a6d43b76aeb6
--- /dev/null
+++ b/test/CodeGen/NVPTX/MachineSink-call.ll
@@ -0,0 +1,23 @@
+; RUN: llc < %s | FileCheck %s
+target triple = "nvptx64-nvidia-cuda"
+
+declare void @foo()
+
+; Load a value, then call a function.  Branch, and use the loaded value only on
+; one side of the branch.  The load shouldn't be sunk beneath the call, because
+; the call may modify memory.
+define i32 @f(i32 %x, i32* %ptr, i1 %cond) {
+Start:
+  ; CHECK: ld.u32
+  %ptr_val = load i32, i32* %ptr
+  ; CHECK: call.uni
+  call void @foo()
+  br i1 %cond, label %L1, label %L2
+L1:
+  %ptr_val2 = add i32 %ptr_val, 100
+  br label %L2
+L2:
+  %v4 = phi i32 [ %x, %Start ], [ %ptr_val2, %L1 ]
+  %v5 = add i32 %v4, 1000
+  ret i32 %v5
+}