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

; RUN: llc -march=amdgcn -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 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 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 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 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
}