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promote-alloca-stored-pointer-value.ll @d2741daraw · history · blame

; RUN: llc -march=amdgcn < %s | FileCheck -check-prefix=GCN %s

; Pointer value is stored in a candidate for LDS usage.

; GCN-LABEL: {{^}}stored_lds_pointer_value:
; GCN: buffer_store_dword v
define void @stored_lds_pointer_value(float* addrspace(1)* %ptr) #0 {
  %tmp = alloca float
  store float 0.0, float *%tmp
  store float* %tmp, float* addrspace(1)* %ptr
  ret void
}

; GCN-LABEL: {{^}}stored_lds_pointer_value_gep:
; GCN-DAG: s_mov_b32 s{{[0-9]+}}, SCRATCH_RSRC_DWORD0
; GCN-DAG: s_mov_b32 s{{[0-9]+}}, SCRATCH_RSRC_DWORD1
; GCN: buffer_store_dword v
; GCN: buffer_store_dword v
define void @stored_lds_pointer_value_gep(float* addrspace(1)* %ptr, i32 %idx) #0 {
bb:
  %tmp = alloca float, i32 16
  store float 0.0, float* %tmp
  %tmp2 = getelementptr inbounds float, float* %tmp, i32 %idx
  store float* %tmp2, float* addrspace(1)* %ptr
  ret void
}

; Pointer value is stored in a candidate for vector usage
; GCN-LABEL: {{^}}stored_vector_pointer_value:
; GCN-DAG: s_mov_b32 s{{[0-9]+}}, SCRATCH_RSRC_DWORD0
; GCN-DAG: s_mov_b32 s{{[0-9]+}}, SCRATCH_RSRC_DWORD1
; GCN: buffer_store_dword
; GCN: buffer_store_dword
; GCN: buffer_store_dword
; GCN: buffer_store_dword
define void @stored_vector_pointer_value(i32* addrspace(1)* %out, i32 %index) {
entry:
  %tmp0 = alloca [4 x i32]
  %x = getelementptr [4 x i32], [4 x i32]* %tmp0, i32 0, i32 0
  %y = getelementptr [4 x i32], [4 x i32]* %tmp0, i32 0, i32 1
  %z = getelementptr [4 x i32], [4 x i32]* %tmp0, i32 0, i32 2
  %w = getelementptr [4 x i32], [4 x i32]* %tmp0, i32 0, i32 3
  store i32 0, i32* %x
  store i32 1, i32* %y
  store i32 2, i32* %z
  store i32 3, i32* %w
  %tmp1 = getelementptr [4 x i32], [4 x i32]* %tmp0, i32 0, i32 %index
  store i32* %tmp1, i32* addrspace(1)* %out
  ret void
}

attributes #0 = { nounwind }