llvm-project/llvm/test/CodeGen/AMDGPU/ipra.ll

; RUN: llc -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs -enable-ipra -amdgpu-sroa=0 < %s | FileCheck -check-prefix=GCN %s
; RUN: llc -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs -amdgpu-sroa=0 < %s | FileCheck -check-prefix=GCN %s

; Kernels are not called, so there is no call preserved mask.
; GCN-LABEL: {{^}}kernel:
; GCN: flat_store_dword
define amdgpu_kernel void @kernel(i32 addrspace(1)* %out) #0 {
entry:
  store i32 0, i32 addrspace(1)* %out
  ret void
}

; GCN-LABEL: {{^}}func:
; GCN: ; NumVgprs: 8
define void @func() #1 {
  call void asm sideeffect "", "~{v0},~{v1},~{v2},~{v3},~{v4},~{v5},~{v6},~{v7}"() #0
  ret void
}

; GCN-LABEL: {{^}}kernel_call:
; GCN-NOT: buffer_store
; GCN-NOT: buffer_load
; GCN-NOT: readlane
; GCN-NOT: writelane
; GCN: flat_load_dword v8
; GCN: s_swappc_b64
; GCN-NOT: buffer_store
; GCN-NOT: buffer_load
; GCN-NOT: readlane
; GCN-NOT: writelane
; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, v8

; GCN: ; NumSgprs: 37
; GCN: ; NumVgprs: 9
define amdgpu_kernel void @kernel_call() #0 {
  %vgpr = load volatile i32, i32 addrspace(1)* undef
  tail call void @func()
  store volatile i32 %vgpr, i32 addrspace(1)* undef
  ret void
}

; GCN-LABEL: {{^}}func_regular_call:
; GCN-NOT: buffer_store
; GCN-NOT: buffer_load
; GCN-NOT: readlane
; GCN-NOT: writelane
; GCN: flat_load_dword v8
; GCN: s_swappc_b64
; GCN-NOT: buffer_store
; GCN-NOT: buffer_load
; GCN-NOT: readlane
; GCN-NOT: writelane
; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, v8

; GCN: ; NumSgprs: 32
; GCN: ; NumVgprs: 9
define void @func_regular_call() #1 {
  %vgpr = load volatile i32, i32 addrspace(1)* undef
  tail call void @func()
  store volatile i32 %vgpr, i32 addrspace(1)* undef
  ret void
}

; GCN-LABEL: {{^}}func_tail_call:
; GCN: s_waitcnt
; GCN-NEXT: s_getpc_b64 s[6:7]
; GCN-NEXT: s_add_u32 s6,
; GCN-NEXT: s_addc_u32 s7,
; GCN-NEXT: s_setpc_b64 s[6:7]

; GCN: ; NumSgprs: 32
; GCN: ; NumVgprs: 8
define void @func_tail_call() #1 {
  tail call void @func()
  ret void
}

; GCN-LABEL: {{^}}func_call_tail_call:
; GCN: flat_load_dword v8
; GCN: s_swappc_b64
; GCN: flat_store_dword v{{\[[0-9]+:[0-9]+\]}}, v8
; GCN: s_setpc_b64

; GCN: ; NumSgprs: 32
; GCN: ; NumVgprs: 9
define void @func_call_tail_call() #1 {
  %vgpr = load volatile i32, i32 addrspace(1)* undef
  tail call void @func()
  store volatile i32 %vgpr, i32 addrspace(1)* undef
  tail call void @func()
  ret void
}

define void @void_func_void() noinline {
  ret void
}

; Make sure we don't get save/restore of FP between calls.
; GCN-LABEL: {{^}}test_funcx2:
; GCN-NOT: s5
; GCN-NOT: s32
define void @test_funcx2() #0 {
  call void @void_func_void()
  call void @void_func_void()
  ret void
}

attributes #0 = { nounwind }
attributes #1 = { nounwind noinline }