1 files changed, 53 insertions, 0 deletions
diff --git a/test/CodeGen/AMDGPU/nested-calls.ll b/test/CodeGen/AMDGPU/nested-calls.ll
new file mode 100644
index 000000000000..4cefa7e3e511
--- /dev/null
+++ b/test/CodeGen/AMDGPU/nested-calls.ll
@@ -0,0 +1,53 @@
+; RUN: llc -march=amdgcn -mcpu=fiji -mattr=-flat-for-global -amdgpu-sroa=0 -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=GCN -check-prefix=VI %s
+; RUN: llc -march=amdgcn -mcpu=hawaii -amdgpu-sroa=0 -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=GCN -check-prefix=CI %s
+; RUN: llc -march=amdgcn -mcpu=gfx900 -mattr=-flat-for-global -amdgpu-sroa=0 -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=GCN -check-prefix=GFX9 -check-prefix=VI %s
+
+; Test calls when called by other callable functions rather than
+; kernels.
+
+declare void @external_void_func_i32(i32) #0
+
+; GCN-LABEL: {{^}}test_func_call_external_void_func_i32_imm:
+; GCN: s_waitcnt
+; GCN: s_mov_b32 s5, s32
+; Spill CSR VGPR used for SGPR spilling
+; GCN: buffer_store_dword v32, off, s[0:3], s5 offset:4
+; GCN-DAG: s_add_u32 s32, s32, 0x200
+; GCN-DAG: v_writelane_b32 v32, s33, 0
+; GCN-DAG: v_writelane_b32 v32, s34, 1
+; GCN-DAG: v_writelane_b32 v32, s35, 2
+
+; GCN: s_swappc_b64
+
+; GCN: v_readlane_b32 s35, v32, 2
+; GCN: v_readlane_b32 s34, v32, 1
+; GCN: v_readlane_b32 s33, v32, 0
+; GCN: buffer_load_dword v32, off, s[0:3], s5 offset:4
+; GCN: s_sub_u32 s32, s32, 0x200
+; GCN: s_setpc_b64
+define void @test_func_call_external_void_func_i32_imm() #0 {
+  call void @external_void_func_i32(i32 42)
+  ret void
+}
+
+; GCN-LABEL: {{^}}test_func_call_external_void_func_i32_imm_stack_use:
+; GCN: s_waitcnt
+; GCN: s_mov_b32 s5, s32
+; GCN: s_add_u32 s32, s32, 0x1200{{$}}
+; GCN: buffer_store_dword v{{[0-9]+}}, off, s[0:3], s5 offset
+; GCN: s_swappc_b64
+; GCN: s_sub_u32 s32, s32, 0x1200{{$}}
+; GCN: s_setpc_b64
+define void @test_func_call_external_void_func_i32_imm_stack_use() #0 {
+  %alloca = alloca [16 x i32], align 4
+  %gep0 = getelementptr inbounds [16 x i32], [16 x i32]* %alloca, i32 0, i32 0
+  %gep15 = getelementptr inbounds [16 x i32], [16 x i32]* %alloca, i32 0, i32 16
+  store volatile i32 0, i32* %gep0
+  store volatile i32 0, i32* %gep15
+  call void @external_void_func_i32(i32 42)
+  ret void
+}
+
+attributes #0 = { nounwind }
+attributes #1 = { nounwind readnone }
+attributes #2 = { nounwind noinline }