1 files changed, 42 insertions, 0 deletions
diff --git a/test/CodeGen/R600/store-barrier.ll b/test/CodeGen/R600/store-barrier.ll
new file mode 100644
index 0000000..350b006
--- /dev/null
+++ b/test/CodeGen/R600/store-barrier.ll
@@ -0,0 +1,42 @@
+; RUN: llc -march=r600 -mcpu=SI -verify-machineinstrs -mattr=+load-store-opt -enable-misched < %s | FileCheck  --check-prefix=CHECK %s
+; RUN: llc -march=r600 -mcpu=bonaire -verify-machineinstrs -mattr=+load-store-opt -enable-misched < %s | FileCheck  --check-prefix=CHECK %s
+
+; This test is for a bug in the machine scheduler where stores without
+; an underlying object would be moved across the barrier.  In this
+; test, the <2 x i8> store will be split into two i8 stores, so they
+; won't have an underlying object.
+
+; CHECK-LABEL: {{^}}test:
+; CHECK: ds_write_b8
+; CHECK: ds_write_b8
+; CHECK: s_barrier
+; CHECK: s_endpgm
+; Function Attrs: nounwind
+define void @test(<2 x i8> addrspace(3)* nocapture %arg, <2 x i8> addrspace(1)* nocapture readonly %arg1, i32 addrspace(1)* nocapture readonly %arg2, <2 x i8> addrspace(1)* nocapture %arg3, i32 %arg4, i64 %tmp9) {
+bb:
+  %tmp10 = getelementptr inbounds i32 addrspace(1)* %arg2, i64 %tmp9
+  %tmp13 = load i32 addrspace(1)* %tmp10, align 2
+  %tmp14 = getelementptr inbounds <2 x i8> addrspace(3)* %arg, i32 %tmp13
+  %tmp15 = load <2 x i8> addrspace(3)* %tmp14, align 2
+  %tmp16 = add i32 %tmp13, 1
+  %tmp17 = getelementptr inbounds <2 x i8> addrspace(3)* %arg, i32 %tmp16
+  store <2 x i8> %tmp15, <2 x i8> addrspace(3)* %tmp17, align 2
+  tail call void @llvm.AMDGPU.barrier.local() #2
+  %tmp25 = load i32 addrspace(1)* %tmp10, align 4
+  %tmp26 = sext i32 %tmp25 to i64
+  %tmp27 = sext i32 %arg4 to i64
+  %tmp28 = getelementptr inbounds <2 x i8> addrspace(3)* %arg, i32 %tmp25, i32 %arg4
+  %tmp29 = load i8 addrspace(3)* %tmp28, align 1
+  %tmp30 = getelementptr inbounds <2 x i8> addrspace(1)* %arg3, i64 %tmp26, i64 %tmp27
+  store i8 %tmp29, i8 addrspace(1)* %tmp30, align 1
+  %tmp32 = getelementptr inbounds <2 x i8> addrspace(3)* %arg, i32 %tmp25, i32 0
+  %tmp33 = load i8 addrspace(3)* %tmp32, align 1
+  %tmp35 = getelementptr inbounds <2 x i8> addrspace(1)* %arg3, i64 %tmp26, i64 0
+  store i8 %tmp33, i8 addrspace(1)* %tmp35, align 1
+  ret void
+}
+
+; Function Attrs: noduplicate nounwind
+declare void @llvm.AMDGPU.barrier.local() #2
+
+attributes #2 = { noduplicate nounwind }