llvm/test/CodeGen/AArch64/fp16-v4-instructions.ll

; RUN: llc < %s -asm-verbose=false -mtriple=aarch64-none-eabi | FileCheck %s

define <4 x half> @add_h(<4 x half> %a, <4 x half> %b) {
entry:
; CHECK-LABEL: add_h:
; CHECK-DAG: fcvtl [[OP1:v[0-9]+\.4s]], v0.4h
; CHECK-DAG: fcvtl [[OP2:v[0-9]+\.4s]], v1.4h
; CHECK: fadd [[RES:v[0-9]+.4s]], [[OP1]], [[OP2]]
; CHECK: fcvtn v0.4h, [[RES]]
  %0 = fadd <4 x half> %a, %b
  ret <4 x half> %0
}


define <4 x half> @build_h4(<4 x half> %a) {
entry:
; CHECK-LABEL: build_h4:
; CHECK: movz [[GPR:w[0-9]+]], #0x3ccd
; CHECK: dup v0.4h, [[GPR]]
  ret <4 x half> <half 0xH3CCD, half 0xH3CCD, half 0xH3CCD, half 0xH3CCD>
}


define <4 x half> @sub_h(<4 x half> %a, <4 x half> %b) {
entry:
; CHECK-LABEL: sub_h:
; CHECK-DAG: fcvtl [[OP1:v[0-9]+\.4s]], v0.4h
; CHECK-DAG: fcvtl [[OP2:v[0-9]+\.4s]], v1.4h
; CHECK: fsub [[RES:v[0-9]+.4s]], [[OP1]], [[OP2]]
; CHECK: fcvtn v0.4h, [[RES]]
  %0 = fsub <4 x half> %a, %b
  ret <4 x half> %0
}


define <4 x half> @mul_h(<4 x half> %a, <4 x half> %b) {
entry:
; CHECK-LABEL: mul_h:
; CHECK-DAG: fcvtl [[OP1:v[0-9]+\.4s]], v0.4h
; CHECK-DAG: fcvtl [[OP2:v[0-9]+\.4s]], v1.4h
; CHECK: fmul [[RES:v[0-9]+.4s]], [[OP1]], [[OP2]]
; CHECK: fcvtn v0.4h, [[RES]]
  %0 = fmul <4 x half> %a, %b
  ret <4 x half> %0
}


define <4 x half> @div_h(<4 x half> %a, <4 x half> %b) {
entry:
; CHECK-LABEL: div_h:
; CHECK-DAG: fcvtl [[OP1:v[0-9]+\.4s]], v0.4h
; CHECK-DAG: fcvtl [[OP2:v[0-9]+\.4s]], v1.4h
; CHECK: fdiv [[RES:v[0-9]+.4s]], [[OP1]], [[OP2]]
; CHECK: fcvtn v0.4h, [[RES]]
  %0 = fdiv <4 x half> %a, %b
  ret <4 x half> %0
}


define <4 x half> @load_h(<4 x half>* %a) {
entry:
; CHECK-LABEL: load_h:
; CHECK: ldr d0, [x0]
  %0 = load <4 x half>, <4 x half>* %a, align 4
  ret <4 x half> %0
}


define void @store_h(<4 x half>* %a, <4 x half> %b) {
entry:
; CHECK-LABEL: store_h:
; CHECK: str d0, [x0]
  store <4 x half> %b, <4 x half>* %a, align 4
  ret void
}

define <4 x half> @s_to_h(<4 x float> %a) {
; CHECK-LABEL: s_to_h:
; CHECK: fcvtn v0.4h, v0.4s
  %1 = fptrunc <4 x float> %a to <4 x half>
  ret <4 x half> %1
}

define <4 x half> @d_to_h(<4 x double> %a) {
; CHECK-LABEL: d_to_h:
; CHECK-DAG: fcvt
; CHECK-DAG: fcvt
; CHECK-DAG: fcvt
; CHECK-DAG: fcvt
; CHECK-DAG: ins
; CHECK-DAG: ins
; CHECK-DAG: ins
; CHECK-DAG: ins
  %1 = fptrunc <4 x double> %a to <4 x half>
  ret <4 x half> %1
}

define <4 x float> @h_to_s(<4 x half> %a) {
; CHECK-LABEL: h_to_s:
; CHECK: fcvtl v0.4s, v0.4h
  %1 = fpext <4 x half> %a to <4 x float>
  ret <4 x float> %1
}

define <4 x double> @h_to_d(<4 x half> %a) {
; CHECK-LABEL: h_to_d:
; CHECK-DAG: fcvt
; CHECK-DAG: fcvt
; CHECK-DAG: fcvt
; CHECK-DAG: fcvt
; CHECK-DAG: ins
; CHECK-DAG: ins
; CHECK-DAG: ins
; CHECK-DAG: ins
  %1 = fpext <4 x half> %a to <4 x double>
  ret <4 x double> %1
}

define <4 x half> @bitcast_i_to_h(float, <4 x i16> %a) {
; CHECK-LABEL: bitcast_i_to_h:
; CHECK: mov v0.16b, v1.16b
  %2 = bitcast <4 x i16> %a to <4 x half>
  ret <4 x half> %2
}

define <4 x i16> @bitcast_h_to_i(float, <4 x half> %a) {
; CHECK-LABEL: bitcast_h_to_i:
; CHECK: mov v0.16b, v1.16b
  %2 = bitcast <4 x half> %a to <4 x i16>
  ret <4 x i16> %2
}

define <4 x half> @sitofp_i8(<4 x i8> %a) #0 {
; CHECK-LABEL: sitofp_i8:
; CHECK-NEXT: shl [[OP1:v[0-9]+\.4h]], v0.4h, #8
; CHECK-NEXT: sshr [[OP2:v[0-9]+\.4h]], [[OP1]], #8
; CHECK-NEXT: sshll [[OP3:v[0-9]+\.4s]], [[OP2]], #0
; CHECK-NEXT: scvtf [[OP4:v[0-9]+\.4s]], [[OP3]]
; CHECK-NEXT: fcvtn v0.4h, [[OP4]]
; CHECK-NEXT: ret
  %1 = sitofp <4 x i8> %a to <4 x half>
  ret <4 x half> %1
}


define <4 x half> @sitofp_i16(<4 x i16> %a) #0 {
; CHECK-LABEL: sitofp_i16:
; CHECK-NEXT: sshll [[OP1:v[0-9]+\.4s]], v0.4h, #0
; CHECK-NEXT: scvtf [[OP2:v[0-9]+\.4s]], [[OP1]]
; CHECK-NEXT: fcvtn v0.4h, [[OP2]]
; CHECK-NEXT: ret
  %1 = sitofp <4 x i16> %a to <4 x half>
  ret <4 x half> %1
}


define <4 x half> @sitofp_i32(<4 x i32> %a) #0 {
; CHECK-LABEL: sitofp_i32:
; CHECK-NEXT: scvtf [[OP1:v[0-9]+\.4s]], v0.4s
; CHECK-NEXT: fcvtn v0.4h, [[OP1]]
  %1 = sitofp <4 x i32> %a to <4 x half>
  ret <4 x half> %1
}


define <4 x half> @sitofp_i64(<4 x i64> %a) #0 {
; CHECK-LABEL: sitofp_i64:
; CHECK-DAG: scvtf [[OP1:v[0-9]+\.2d]], v0.2d
; CHECK-DAG: scvtf [[OP2:v[0-9]+\.2d]], v1.2d
; CHECK-DAG: fcvtn [[OP3:v[0-9]+]].2s, [[OP1]]
; CHECK-NEXT: fcvtn2 [[OP3]].4s, [[OP2]]
; CHECK-NEXT: fcvtn v0.4h, [[OP3]].4s
  %1 = sitofp <4 x i64> %a to <4 x half>
  ret <4 x half> %1
}

define <4 x half> @uitofp_i8(<4 x i8> %a) #0 {
; CHECK-LABEL: uitofp_i8:
; CHECK-NEXT: bic v0.4h, #0xff, lsl #8
; CHECK-NEXT: ushll [[OP1:v[0-9]+\.4s]], v0.4h, #0
; CHECK-NEXT: ucvtf [[OP2:v[0-9]+\.4s]], [[OP1]]
; CHECK-NEXT: fcvtn v0.4h, [[OP2]]
; CHECK-NEXT: ret
  %1 = uitofp <4 x i8> %a to <4 x half>
  ret <4 x half> %1
}


define <4 x half> @uitofp_i16(<4 x i16> %a) #0 {
; CHECK-LABEL: uitofp_i16:
; CHECK-NEXT: ushll [[OP1:v[0-9]+\.4s]], v0.4h, #0
; CHECK-NEXT: ucvtf [[OP2:v[0-9]+\.4s]], [[OP1]]
; CHECK-NEXT: fcvtn v0.4h, [[OP2]]
; CHECK-NEXT: ret
  %1 = uitofp <4 x i16> %a to <4 x half>
  ret <4 x half> %1
}


define <4 x half> @uitofp_i32(<4 x i32> %a) #0 {
; CHECK-LABEL: uitofp_i32:
; CHECK-NEXT: ucvtf [[OP1:v[0-9]+\.4s]], v0.4s
; CHECK-NEXT: fcvtn v0.4h, [[OP1]]
  %1 = uitofp <4 x i32> %a to <4 x half>
  ret <4 x half> %1
}


define <4 x half> @uitofp_i64(<4 x i64> %a) #0 {
; CHECK-LABEL: uitofp_i64:
; CHECK-DAG: ucvtf [[OP1:v[0-9]+\.2d]], v0.2d
; CHECK-DAG: ucvtf [[OP2:v[0-9]+\.2d]], v1.2d
; CHECK-DAG: fcvtn [[OP3:v[0-9]+]].2s, [[OP1]]
; CHECK-NEXT: fcvtn2 [[OP3]].4s, [[OP2]]
; CHECK-NEXT: fcvtn v0.4h, [[OP3]].4s
  %1 = uitofp <4 x i64> %a to <4 x half>
  ret <4 x half> %1
}

define void @test_insert_at_zero(half %a, <4 x half>* %b) #0 {
; CHECK-LABEL: test_insert_at_zero:
; CHECK-NEXT: str d0, [x0]
; CHECK-NEXT: ret
  %1 = insertelement <4 x half> undef, half %a, i64 0
  store <4 x half> %1, <4 x half>* %b, align 4
  ret void
}

define <4 x i8> @fptosi_i8(<4 x half> %a) #0 {
; CHECK-LABEL: fptosi_i8:
; CHECK-NEXT: fcvtl  [[REG1:v[0-9]+\.4s]], v0.4h
; CHECK-NEXT: fcvtzs [[REG2:v[0-9]+\.4s]], [[REG1]]
; CHECK-NEXT: xtn    v0.4h, [[REG2]]
; CHECK-NEXT: ret
  %1 = fptosi<4 x half> %a to <4 x i8>
  ret <4 x i8> %1
}

define <4 x i16> @fptosi_i16(<4 x half> %a) #0 {
; CHECK-LABEL: fptosi_i16:
; CHECK-NEXT: fcvtl  [[REG1:v[0-9]+\.4s]], v0.4h
; CHECK-NEXT: fcvtzs [[REG2:v[0-9]+\.4s]], [[REG1]]
; CHECK-NEXT: xtn    v0.4h, [[REG2]]
; CHECK-NEXT: ret
  %1 = fptosi<4 x half> %a to <4 x i16>
  ret <4 x i16> %1
}

define <4 x i8> @fptoui_i8(<4 x half> %a) #0 {
; CHECK-LABEL: fptoui_i8:
; CHECK-NEXT: fcvtl  [[REG1:v[0-9]+\.4s]], v0.4h
; NOTE: fcvtzs selected here because the xtn shaves the sign bit
; CHECK-NEXT: fcvtzs [[REG2:v[0-9]+\.4s]], [[REG1]]
; CHECK-NEXT: xtn    v0.4h, [[REG2]]
; CHECK-NEXT: ret
  %1 = fptoui<4 x half> %a to <4 x i8>
  ret <4 x i8> %1
}

define <4 x i16> @fptoui_i16(<4 x half> %a) #0 {
; CHECK-LABEL: fptoui_i16:
; CHECK-NEXT: fcvtl  [[REG1:v[0-9]+\.4s]], v0.4h
; CHECK-NEXT: fcvtzu [[REG2:v[0-9]+\.4s]], [[REG1]]
; CHECK-NEXT: xtn    v0.4h, [[REG2]]
; CHECK-NEXT: ret
  %1 = fptoui<4 x half> %a to <4 x i16>
  ret <4 x i16> %1
}

attributes #0 = { nounwind }