1 files changed, 26 insertions, 0 deletions
diff --git a/test/CodeGen/AMDGPU/r600.private-memory.ll b/test/CodeGen/AMDGPU/r600.private-memory.ll
new file mode 100644
index 0000000000000..f406c160cbbef
--- /dev/null
+++ b/test/CodeGen/AMDGPU/r600.private-memory.ll
@@ -0,0 +1,26 @@
+; RUN: llc -march=r600 -mcpu=cypress < %s | FileCheck %s -check-prefix=R600 -check-prefix=FUNC
+
+declare i32 @llvm.r600.read.tidig.x() nounwind readnone
+
+
+; Make sure we don't overwrite workitem information with private memory
+
+; FUNC-LABEL: {{^}}work_item_info:
+; R600-NOT: MOV T0.X
+; Additional check in case the move ends up in the last slot
+; R600-NOT: MOV * TO.X
+
+define void @work_item_info(i32 addrspace(1)* %out, i32 %in) {
+entry:
+  %0 = alloca [2 x i32]
+  %1 = getelementptr [2 x i32], [2 x i32]* %0, i32 0, i32 0
+  %2 = getelementptr [2 x i32], [2 x i32]* %0, i32 0, i32 1
+  store i32 0, i32* %1
+  store i32 1, i32* %2
+  %3 = getelementptr [2 x i32], [2 x i32]* %0, i32 0, i32 %in
+  %4 = load i32, i32* %3
+  %5 = call i32 @llvm.r600.read.tidig.x()
+  %6 = add i32 %4, %5
+  store i32 %6, i32 addrspace(1)* %out
+  ret void
+}