[Piglit] [PATCH] cl: Add test for CSR VGPRs caused by SGPR spilling

[Matt Arsenault]

Make sure if a CSR VGPR is needed for SGPR spilling, it is
properly saved and restored.
---
 .../execute/amdgcn-callee-saved-registers.cl       | 52 ++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 tests/cl/program/execute/amdgcn-callee-saved-registers.cl

diff --git a/tests/cl/program/execute/amdgcn-callee-saved-registers.cl b/tests/cl/program/execute/amdgcn-callee-saved-registers.cl
new file mode 100644
index 000000000..8b8db2783
--- /dev/null
+++ b/tests/cl/program/execute/amdgcn-callee-saved-registers.cl
@@ -0,0 +1,52 @@
+/*!
+
+[config]
+name: amdgcn call clobbers
+clc_version_min: 10
+device_regex: gfx[\d]*
+
+[test]
+name: CSR VGPR for SGPR spilling
+kernel_name: kernel_call_need_spill_vgpr_for_csr_sgpr_spills_no_calls
+dimensions: 1
+global_size: 1 0 0
+arg_out: 0 buffer int[2] \
+  0x1337  0xabcd1234
+
+!*/
+
+#ifndef __AMDGCN__
+#error This test is only for amdgcn
+#endif
+
+__attribute__((noinline))
+int need_spill_vgpr_for_csr_sgpr_spills_no_calls()
+{
+    int sgpr_val;
+    __asm volatile("s_mov_b32 %0, 0x1337" : "=s"(sgpr_val));
+
+    __asm volatile(
+        "s_nop 1" :::
+        "v0","v1","v2","v3","v4","v5","v6","v7",
+        "v8","v9","v10","v11","v12","v13","v14","v15",
+        "v16","v17","v18","v19","v20","v21","v22","v23",
+        "v24","v25","v26","v27","v28","v29","v30","v31",
+
+        "s0","s1","s2","s3","s4","s5","s6","s7",
+        "s8","s9","s10","s11","s12","s13","s14","s15",
+        "s16","s17","s18","s19","s20","s21","s22","s23",
+        "s24","s25","s26","s27","s28","s29","s30","s31",
+	"s32", "s33", "s34", "s35", "s36", "s37", "s38");
+
+    return sgpr_val;
+}
+
+
+kernel void kernel_call_need_spill_vgpr_for_csr_sgpr_spills_no_calls(global int* ret)
+{
+    int v32;
+    __asm volatile("v_mov_b32 %0, 0xabcd1234" : "={v32}"(v32));
+    ret[0] = need_spill_vgpr_for_csr_sgpr_spills_no_calls();
+    __asm volatile ("s_nop 0" :: "{v32}"(v32));
+    ret[1] = v32;
+}
-- 
2.14.1