R600/SI: Add a failing test case for offset order in ds_read2 instructions

llvm-svn: 222585

diff --git a/llvm/test/CodeGen/R600/ds_read2_offset_order.ll b/llvm/test/CodeGen/R600/ds_read2_offset_order.ll
new file mode 100644 (file)
index 0000000..ae703e0
--- /dev/null
+++ b/llvm/test/CodeGen/R600/ds_read2_offset_order.ll
@@ -0,0 +1,44 @@
+; RUN: llc -march=r600 -mcpu=bonaire -verify-machineinstrs -mattr=+load-store-opt -enable-misched < %s | FileCheck -strict-whitespace -check-prefix=SI %s
+
+; XFAIL: *
+
+@lds = addrspace(3) global [512 x float] undef, align 4
+
+; SI-LABEL: {{^}}offset_order:
+
+; SI: ds_read_b32 v{{[0-9]+}}, v{{[0-9]+}} offset:56
+; SI: ds_read2st64_b32 v[{{[0-9]+}}:{{[0-9]+}}], v{{[0-9]+}} offset0:0 offset1:4
+; SI: ds_read2_b32 v[{{[0-9]+}}:{{[0-9]+}}], v{{[0-9]+}} offset0:2 offset1:3
+; SI: ds_read2_b32 v[{{[0-9]+}}:{{[0-9]+}}], v{{[0-9]+}} offset0:11 offset1:1
+
+define void @offset_order(float addrspace(1)* %out) {
+entry:
+  %ptr0 = getelementptr inbounds [512 x float] addrspace(3)* @lds, i32 0, i32 0
+  %val0 = load float addrspace(3)* %ptr0
+
+  %ptr1 = getelementptr inbounds [512 x float] addrspace(3)* @lds, i32 0, i32 256
+  %val1 = load float addrspace(3)* %ptr1
+  %add1 = fadd float %val0, %val1
+
+  %ptr2 = getelementptr inbounds [512 x float] addrspace(3)* @lds, i32 0, i32 3
+  %val2 = load float addrspace(3)* %ptr2
+  %add2 = fadd float %add1, %val2
+
+  %ptr3 = getelementptr inbounds [512 x float] addrspace(3)* @lds, i32 0, i32 2
+  %val3 = load float addrspace(3)* %ptr3
+  %add3 = fadd float %add2, %val3
+
+  %ptr4 = getelementptr inbounds [512 x float] addrspace(3)* @lds, i32 0, i32 12
+  %val4 = load float addrspace(3)* %ptr4
+  %add4 = fadd float %add3, %val4
+
+  %ptr5 = getelementptr inbounds [512 x float] addrspace(3)* @lds, i32 0, i32 14
+  %val5 = load float addrspace(3)* %ptr5
+  %add5 = fadd float %add4, %val5
+
+  %ptr6 = getelementptr inbounds [512 x float] addrspace(3)* @lds, i32 0, i32 11
+  %val6 = load float addrspace(3)* %ptr6
+  %add6 = fadd float %add5, %val6
+  store float %add6, float addrspace(1)* %out
+  ret void
+}