llvm-project/llvm/test/CodeGen/AMDGPU/bitcast-vector-extract.ll

; RUN: llc -march=amdgcn -mcpu=tahiti -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
; RUN: llc -march=amdgcn -mcpu=tonga -mattr=-flat-for-global -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s

; The bitcast should be pushed through the bitcasts so the vectors can
; be broken down and the shared components can be CSEd

; GCN-LABEL: {{^}}store_bitcast_constant_v8i32_to_v8f32:
; GCN: buffer_store_dwordx4
; GCN: buffer_store_dwordx4
; GCN-NOT: v_mov_b32
; GCN: buffer_store_dwordx4
; GCN-NOT: v_mov_b32
; GCN: buffer_store_dwordx4
define amdgpu_kernel void @store_bitcast_constant_v8i32_to_v8f32(<8 x float> addrspace(1)* %out, <8 x i32> %vec) {
  %vec0.bc = bitcast <8 x i32> <i32 7, i32 7, i32 7, i32 7, i32 7, i32 7, i32 7, i32 8> to <8 x float>
  store volatile <8 x float> %vec0.bc, <8 x float> addrspace(1)* %out

  %vec1.bc = bitcast <8 x i32> <i32 7, i32 7, i32 7, i32 7, i32 7, i32 7, i32 7, i32 9> to <8 x float>
  store volatile <8 x float> %vec1.bc, <8 x float> addrspace(1)* %out
  ret void
}

; GCN-LABEL: {{^}}store_bitcast_constant_v4i64_to_v8f32:
; GCN: buffer_store_dwordx4
; GCN: buffer_store_dwordx4
; GCN-NOT: v_mov_b32
; GCN: buffer_store_dwordx4
; GCN-NOT: v_mov_b32
; GCN: buffer_store_dwordx4
define amdgpu_kernel void @store_bitcast_constant_v4i64_to_v8f32(<8 x float> addrspace(1)* %out, <4 x i64> %vec) {
  %vec0.bc = bitcast <4 x i64> <i64 7, i64 7, i64 7, i64 8> to <8 x float>
  store volatile <8 x float> %vec0.bc, <8 x float> addrspace(1)* %out

  %vec1.bc = bitcast <4 x i64> <i64 7, i64 7, i64 7, i64 9> to <8 x float>
  store volatile <8 x float> %vec1.bc, <8 x float> addrspace(1)* %out
  ret void
}

; GCN-LABEL: {{^}}store_bitcast_constant_v4i64_to_v4f64:
; GCN: buffer_store_dwordx4
; GCN: buffer_store_dwordx4
; GCN-NOT: v_mov_b32
; GCN: buffer_store_dwordx4
; GCN-NOT: v_mov_b32
; GCN: buffer_store_dwordx4
define amdgpu_kernel void @store_bitcast_constant_v4i64_to_v4f64(<4 x double> addrspace(1)* %out, <4 x i64> %vec) {
  %vec0.bc = bitcast <4 x i64> <i64 7, i64 7, i64 7, i64 8> to <4 x double>
  store volatile <4 x double> %vec0.bc, <4 x double> addrspace(1)* %out

  %vec1.bc = bitcast <4 x i64> <i64 7, i64 7, i64 7, i64 9> to <4 x double>
  store volatile <4 x double> %vec1.bc, <4 x double> addrspace(1)* %out
  ret void
}

; GCN-LABEL: {{^}}store_bitcast_constant_v8i32_to_v16i16:
; GCN: buffer_store_dwordx4
; GCN: buffer_store_dwordx4
; GCN-NOT: v_mov_b32
; GCN: buffer_store_dwordx4
; GCN-NOT: v_mov_b32
; GCN: buffer_store_dwordx4
define amdgpu_kernel void @store_bitcast_constant_v8i32_to_v16i16(<8 x float> addrspace(1)* %out, <16 x i16> %vec) {
  %vec0.bc = bitcast <16 x i16> <i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 8> to <8 x float>
  store volatile <8 x float> %vec0.bc, <8 x float> addrspace(1)* %out

  %vec1.bc = bitcast <16 x i16> <i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 9> to <8 x float>
  store volatile <8 x float> %vec1.bc, <8 x float> addrspace(1)* %out
  ret void
}

; GCN-LABEL: {{^}}store_value_lowered_to_undef_bitcast_source:
; GCN-NOT: store_dword
define amdgpu_kernel void @store_value_lowered_to_undef_bitcast_source(<2 x i32> addrspace(1)* %out, i64 %a, i64 %b, i32 %c) #0 {
  %undef = call i64 @llvm.amdgcn.icmp.i64(i64 %a, i64 %b, i32 %c) #1
  %bc = bitcast i64 %undef to <2 x i32>
  store volatile <2 x i32> %bc, <2 x i32> addrspace(1)* %out
  ret void
}

; GCN-LABEL: {{^}}store_value_lowered_to_undef_bitcast_source_extractelt:
; GCN-NOT: store_dword
define amdgpu_kernel void @store_value_lowered_to_undef_bitcast_source_extractelt(i32 addrspace(1)* %out, i64 %a, i64 %b, i32 %c) #0 {
  %undef = call i64 @llvm.amdgcn.icmp.i64(i64 %a, i64 %b, i32 %c) #1
  %bc = bitcast i64 %undef to <2 x i32>
  %elt1 = extractelement <2 x i32> %bc, i32 1
  store volatile i32 %elt1, i32 addrspace(1)* %out
  ret void
}

declare i64 @llvm.amdgcn.icmp.i64(i64, i64, i32) #1

attributes #0 = { nounwind }
attributes #1 = { nounwind readnone convergent }