| ; RUN: llc -march=amdgcn -mcpu=hawaii -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=GCN -check-prefix=CI %s |
| ; RUN: llc -march=amdgcn -mcpu=gfx900 -verify-machineinstrs < %s | FileCheck -enable-var-scope -check-prefix=GCN -check-prefix=GFX9 %s |
| |
| ; GCN-LABEL: {{^}}callee_no_stack: |
| ; GCN: ; BB#0: |
| ; GCN-NEXT: s_waitcnt |
| ; GCN-NEXT: s_setpc_b64 |
| define void @callee_no_stack() #0 { |
| ret void |
| } |
| |
| ; GCN-LABEL: {{^}}callee_no_stack_no_fp_elim: |
| ; GCN: ; BB#0: |
| ; GCN-NEXT: s_waitcnt |
| ; GCN-NEXT: s_setpc_b64 |
| define void @callee_no_stack_no_fp_elim() #1 { |
| ret void |
| } |
| |
| ; Requires frame pointer for access to local regular object. |
| |
| ; GCN-LABEL: {{^}}callee_with_stack: |
| ; GCN: ; BB#0: |
| ; GCN-NEXT: s_waitcnt |
| ; GCN-NEXT: s_mov_b32 s5, s32 |
| ; GCN-NEXT: v_mov_b32_e32 v0, 0{{$}} |
| ; GCN-NEXT: buffer_store_dword v0, off, s[0:3], s5 offset:4{{$}} |
| ; GCN-NEXT: s_waitcnt |
| ; GCN-NEXT: s_setpc_b64 |
| define void @callee_with_stack() #0 { |
| %alloca = alloca i32 |
| store volatile i32 0, i32* %alloca |
| ret void |
| } |
| |
| ; GCN-LABEL: {{^}}callee_with_stack_and_call: |
| ; GCN: ; BB#0: |
| ; GCN-NEXT: s_waitcnt |
| ; GCN: s_mov_b32 s5, s32 |
| ; GCN: buffer_store_dword v32, off, s[0:3], s5 offset:8 |
| |
| ; GCN-DAG: v_writelane_b32 v32, s33, |
| ; GCN-DAG: v_writelane_b32 v32, s34, |
| ; GCN-DAG: v_writelane_b32 v32, s35, |
| ; GCN-DAG: s_add_u32 s32, s32, 0x300{{$}} |
| ; GCN-DAG: v_mov_b32_e32 v0, 0{{$}} |
| ; GCN: buffer_store_dword v0, off, s[0:3], s5 offset:4{{$}} |
| ; GCN-DAG: s_mov_b32 s33, s5 |
| |
| |
| ; GCN: s_swappc_b64 |
| ; GCN: s_mov_b32 s5, s33 |
| ; GCN-DAG: v_readlane_b32 s35, |
| ; GCN-DAG: v_readlane_b32 s34, |
| ; GCN-DAG: v_readlane_b32 s33, |
| ; GCN: buffer_load_dword v32, off, s[0:3], s5 offset:8 |
| ; GCN: s_waitcnt |
| ; GCN-NEXT: s_setpc_b64 |
| define void @callee_with_stack_and_call() #0 { |
| %alloca = alloca i32 |
| store volatile i32 0, i32* %alloca |
| call void @external_void_func_void() |
| ret void |
| } |
| |
| ; Should be able to copy incoming stack pointer directly to inner |
| ; call's stack pointer argument. |
| |
| ; There is stack usage only because of the need to evict a VGPR for |
| ; spilling CSR SGPRs. |
| |
| ; GCN-LABEL: {{^}}callee_no_stack_with_call: |
| ; GCN: s_waitcnt |
| ; GCN: s_mov_b32 s5, s32 |
| ; GCN: buffer_store_dword v32, off, s[0:3], s5 offset:4 |
| ; GCN-DAG: v_writelane_b32 v32, s33, 0 |
| ; GCN-DAG: v_writelane_b32 v32, s34, 1 |
| ; GCN: s_mov_b32 s33, s5 |
| ; GCN: s_swappc_b64 |
| ; GCN: s_mov_b32 s5, s33 |
| |
| ; GCN-DAG: v_readlane_b32 s34, v32, 1 |
| ; GCN-DAG: 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 @callee_no_stack_with_call() #0 { |
| call void @external_void_func_void() |
| ret void |
| } |
| |
| declare void @external_void_func_void() #0 |
| |
| attributes #0 = { nounwind } |
| attributes #1 = { nounwind "no-frame-pointer-elim"="true" } |