test/CodeGen/AArch64/sve-vector-splat.ll

; RUN: llc -mtriple=aarch64-linux-gnu -mattr=+sve < %s 2>%t | FileCheck %s
; RUN: FileCheck --check-prefix=WARN --allow-empty %s <%t

; If this check fails please read test/CodeGen/AArch64/README for instructions on how to resolve it.
; WARN-NOT: warning

;; Splats of legal integer vector types

define <vscale x 16 x i8> @sve_splat_16xi8(i8 %val) {
; CHECK-LABEL: @sve_splat_16xi8
; CHECK: mov z0.b, w0
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 16 x i8> undef, i8 %val, i32 0
  %splat = shufflevector <vscale x 16 x i8> %ins, <vscale x 16 x i8> undef, <vscale x 16 x i32> zeroinitializer
  ret <vscale x 16 x i8> %splat
}

define <vscale x 8 x i16> @sve_splat_8xi16(i16 %val) {
; CHECK-LABEL: @sve_splat_8xi16
; CHECK: mov z0.h, w0
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 8 x i16> undef, i16 %val, i32 0
  %splat = shufflevector <vscale x 8 x i16> %ins, <vscale x 8 x i16> undef, <vscale x 8 x i32> zeroinitializer
  ret <vscale x 8 x i16> %splat
}

define <vscale x 4 x i32> @sve_splat_4xi32(i32 %val) {
; CHECK-LABEL: @sve_splat_4xi32
; CHECK: mov z0.s, w0
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 4 x i32> undef, i32 %val, i32 0
  %splat = shufflevector <vscale x 4 x i32> %ins, <vscale x 4 x i32> undef, <vscale x 4 x i32> zeroinitializer
  ret <vscale x 4 x i32> %splat
}

define <vscale x 2 x i64> @sve_splat_2xi64(i64 %val) {
; CHECK-LABEL: @sve_splat_2xi64
; CHECK: mov z0.d, x0
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 2 x i64> undef, i64 %val, i32 0
  %splat = shufflevector <vscale x 2 x i64> %ins, <vscale x 2 x i64> undef, <vscale x 2 x i32> zeroinitializer
  ret <vscale x 2 x i64> %splat
}

define <vscale x 16 x i8> @sve_splat_16xi8_imm() {
; CHECK-LABEL: @sve_splat_16xi8_imm
; CHECK: mov z0.b, #1
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 16 x i8> undef, i8 1, i32 0
  %splat = shufflevector <vscale x 16 x i8> %ins, <vscale x 16 x i8> undef, <vscale x 16 x i32> zeroinitializer
  ret <vscale x 16 x i8> %splat
}

define <vscale x 8 x i16> @sve_splat_8xi16_imm() {
; CHECK-LABEL: @sve_splat_8xi16_imm
; CHECK: mov z0.h, #1
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 8 x i16> undef, i16 1, i32 0
  %splat = shufflevector <vscale x 8 x i16> %ins, <vscale x 8 x i16> undef, <vscale x 8 x i32> zeroinitializer
  ret <vscale x 8 x i16> %splat
}

define <vscale x 4 x i32> @sve_splat_4xi32_imm() {
; CHECK-LABEL: @sve_splat_4xi32_imm
; CHECK: mov z0.s, #1
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 4 x i32> undef, i32 1, i32 0
  %splat = shufflevector <vscale x 4 x i32> %ins, <vscale x 4 x i32> undef, <vscale x 4 x i32> zeroinitializer
  ret <vscale x 4 x i32> %splat
}

define <vscale x 2 x i64> @sve_splat_2xi64_imm() {
; CHECK-LABEL: @sve_splat_2xi64_imm
; CHECK: mov z0.d, #1
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 2 x i64> undef, i64 1, i32 0
  %splat = shufflevector <vscale x 2 x i64> %ins, <vscale x 2 x i64> undef, <vscale x 2 x i32> zeroinitializer
  ret <vscale x 2 x i64> %splat
}

;; Promote splats of smaller illegal integer vector types

define <vscale x 2 x i8> @sve_splat_2xi8(i8 %val) {
; CHECK-LABEL: @sve_splat_2xi8
; CHECK: mov z0.d, x0
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 2 x i8> undef, i8 %val, i32 0
  %splat = shufflevector <vscale x 2 x i8> %ins, <vscale x 2 x i8> undef, <vscale x 2 x i32> zeroinitializer
  ret <vscale x 2 x i8> %splat
}

define <vscale x 4 x i8> @sve_splat_4xi8(i8 %val) {
; CHECK-LABEL: @sve_splat_4xi8
; CHECK: mov z0.s, w0
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 4 x i8> undef, i8 %val, i32 0
  %splat = shufflevector <vscale x 4 x i8> %ins, <vscale x 4 x i8> undef, <vscale x 4 x i32> zeroinitializer
  ret <vscale x 4 x i8> %splat
}

define <vscale x 8 x i8> @sve_splat_8xi8(i8 %val) {
; CHECK-LABEL: @sve_splat_8xi8
; CHECK: mov z0.h, w0
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 8 x i8> undef, i8 %val, i32 0
  %splat = shufflevector <vscale x 8 x i8> %ins, <vscale x 8 x i8> undef, <vscale x 8 x i32> zeroinitializer
  ret <vscale x 8 x i8> %splat
}

define <vscale x 2 x i16> @sve_splat_2xi16(i16 %val) {
; CHECK-LABEL: @sve_splat_2xi16
; CHECK: mov z0.d, x0
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 2 x i16> undef, i16 %val, i32 0
  %splat = shufflevector <vscale x 2 x i16> %ins, <vscale x 2 x i16> undef, <vscale x 2 x i32> zeroinitializer
  ret <vscale x 2 x i16> %splat
}

define <vscale x 4 x i16> @sve_splat_4xi16(i16 %val) {
; CHECK-LABEL: @sve_splat_4xi16
; CHECK: mov z0.s, w0
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 4 x i16> undef, i16 %val, i32 0
  %splat = shufflevector <vscale x 4 x i16> %ins, <vscale x 4 x i16> undef, <vscale x 4 x i32> zeroinitializer
  ret <vscale x 4 x i16> %splat
}

define <vscale x 2 x i32> @sve_splat_2xi32(i32 %val) {
; CHECK-LABEL: @sve_splat_2xi32
; CHECK: mov z0.d, x0
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 2 x i32> undef, i32 %val, i32 0
  %splat = shufflevector <vscale x 2 x i32> %ins, <vscale x 2 x i32> undef, <vscale x 2 x i32> zeroinitializer
  ret <vscale x 2 x i32> %splat
}

;; Widen/split splats of wide vector types.

define <vscale x 12 x i32> @sve_splat_12xi32(i32 %val) {
; CHECK-LABEL: @sve_splat_12xi32
; CHECK: mov z0.s, w0
; CHECK-NEXT: mov z1.d, z0.d
; CHECK-NEXT: mov z2.d, z0.d
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 12 x i32> undef, i32 %val, i32 0
  %splat = shufflevector <vscale x 12 x i32> %ins, <vscale x 12 x i32> undef, <vscale x 12 x i32> zeroinitializer
  ret <vscale x 12 x i32> %splat
}

define <vscale x 2 x i1> @sve_splat_2xi1(i1 %val) {
; CHECK-LABEL: @sve_splat_2xi1
; CHECK: sbfx x8, x0, #0, #1
; CHECK-NEXT: whilelo p0.d, xzr, x8
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 2 x i1> undef, i1 %val, i32 0
  %splat = shufflevector <vscale x 2 x i1> %ins, <vscale x 2 x i1> undef, <vscale x 2 x i32> zeroinitializer
  ret <vscale x 2 x i1> %splat
}

define <vscale x 4 x i1> @sve_splat_4xi1(i1 %val) {
; CHECK-LABEL: @sve_splat_4xi1
; CHECK: sbfx x8, x0, #0, #1
; CHECK-NEXT: whilelo p0.s, xzr, x8
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 4 x i1> undef, i1 %val, i32 0
  %splat = shufflevector <vscale x 4 x i1> %ins, <vscale x 4 x i1> undef, <vscale x 4 x i32> zeroinitializer
  ret <vscale x 4 x i1> %splat
}

define <vscale x 8 x i1> @sve_splat_8xi1(i1 %val) {
; CHECK-LABEL: @sve_splat_8xi1
; CHECK: sbfx x8, x0, #0, #1
; CHECK-NEXT: whilelo p0.h, xzr, x8
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 8 x i1> undef, i1 %val, i32 0
  %splat = shufflevector <vscale x 8 x i1> %ins, <vscale x 8 x i1> undef, <vscale x 8 x i32> zeroinitializer
  ret <vscale x 8 x i1> %splat
}

define <vscale x 16 x i1> @sve_splat_16xi1(i1 %val) {
; CHECK-LABEL: @sve_splat_16xi1
; CHECK: sbfx x8, x0, #0, #1
; CHECK-NEXT: whilelo p0.b, xzr, x8
; CHECK-NEXT: ret
  %ins = insertelement <vscale x 16 x i1> undef, i1 %val, i32 0
  %splat = shufflevector <vscale x 16 x i1> %ins, <vscale x 16 x i1> undef, <vscale x 16 x i32> zeroinitializer
  ret <vscale x 16 x i1> %splat
}

;; Splats of legal floating point vector types

define <vscale x 8 x bfloat> @splat_nxv8bf16(bfloat %val) #0 {
; CHECK-LABEL: splat_nxv8bf16:
; CHECK: mov z0.h, h0
; CHECK-NEXT: ret
  %1 = insertelement <vscale x 8 x bfloat> undef, bfloat %val, i32 0
  %2 = shufflevector <vscale x 8 x bfloat> %1, <vscale x 8 x bfloat> undef, <vscale x 8 x i32> zeroinitializer
  ret <vscale x 8 x bfloat> %2
}

define <vscale x 8 x half> @splat_nxv8f16(half %val) {
; CHECK-LABEL: splat_nxv8f16:
; CHECK: mov z0.h, h0
; CHECK-NEXT: ret
  %1 = insertelement <vscale x 8 x half> undef, half %val, i32 0
  %2 = shufflevector <vscale x 8 x half> %1, <vscale x 8 x half> undef, <vscale x 8 x i32> zeroinitializer
  ret <vscale x 8 x half> %2
}

define <vscale x 4 x half> @splat_nxv4f16(half %val) {
; CHECK-LABEL: splat_nxv4f16:
; CHECK: mov z0.h, h0
; CHECK-NEXT: ret
  %1 = insertelement <vscale x 4 x half> undef, half %val, i32 0
  %2 = shufflevector <vscale x 4 x half> %1, <vscale x 4 x half> undef, <vscale x 4 x i32> zeroinitializer
  ret <vscale x 4 x half> %2
}

define <vscale x 2 x half> @splat_nxv2f16(half %val) {
; CHECK-LABEL: splat_nxv2f16:
; CHECK: mov z0.h, h0
; CHECK-NEXT: ret
  %1 = insertelement <vscale x 2 x half> undef, half %val, i32 0
  %2 = shufflevector <vscale x 2 x half> %1, <vscale x 2 x half> undef, <vscale x 2 x i32> zeroinitializer
  ret <vscale x 2 x half> %2
}

define <vscale x 4 x float> @splat_nxv4f32(float %val) {
; CHECK-LABEL: splat_nxv4f32:
; CHECK: mov z0.s, s0
; CHECK-NEXT: ret
  %1 = insertelement <vscale x 4 x float> undef, float %val, i32 0
  %2 = shufflevector <vscale x 4 x float> %1, <vscale x 4 x float> undef, <vscale x 4 x i32> zeroinitializer
  ret <vscale x 4 x float> %2
}

define <vscale x 2 x float> @splat_nxv2f32(float %val) {
; CHECK-LABEL: splat_nxv2f32:
; CHECK: mov z0.s, s0
; CHECK-NEXT: ret
  %1 = insertelement <vscale x 2 x float> undef, float %val, i32 0
  %2 = shufflevector <vscale x 2 x float> %1, <vscale x 2 x float> undef, <vscale x 2 x i32> zeroinitializer
  ret <vscale x 2 x float> %2
}

define <vscale x 2 x double> @splat_nxv2f64(double %val) {
; CHECK-LABEL: splat_nxv2f64:
; CHECK: mov z0.d, d0
; CHECK-NEXT: ret
  %1 = insertelement <vscale x 2 x double> undef, double %val, i32 0
  %2 = shufflevector <vscale x 2 x double> %1, <vscale x 2 x double> undef, <vscale x 2 x i32> zeroinitializer
  ret <vscale x 2 x double> %2
}

define <vscale x 8 x half> @splat_nxv8f16_zero() {
; CHECK-LABEL: splat_nxv8f16_zero:
; CHECK: mov z0.h, #0
; CHECK-NEXT: ret
  ret <vscale x 8 x half> zeroinitializer
}

define <vscale x 8 x bfloat> @splat_nxv8bf16_zero() #0 {
; CHECK-LABEL: splat_nxv8bf16_zero:
; CHECK: mov z0.h, #0
; CHECK-NEXT: ret
  ret <vscale x 8 x bfloat> zeroinitializer
}

define <vscale x 4 x half> @splat_nxv4f16_zero() {
; CHECK-LABEL: splat_nxv4f16_zero:
; CHECK: mov z0.h, #0
; CHECK-NEXT: ret
  ret <vscale x 4 x half> zeroinitializer
}

define <vscale x 2 x half> @splat_nxv2f16_zero() {
; CHECK-LABEL: splat_nxv2f16_zero:
; CHECK: mov z0.h, #0
; CHECK-NEXT: ret
  ret <vscale x 2 x half> zeroinitializer
}

define <vscale x 4 x float> @splat_nxv4f32_zero() {
; CHECK-LABEL: splat_nxv4f32_zero:
; CHECK: mov z0.s, #0
; CHECK-NEXT: ret
  ret <vscale x 4 x float> zeroinitializer
}

define <vscale x 2 x float> @splat_nxv2f32_zero() {
; CHECK-LABEL: splat_nxv2f32_zero:
; CHECK: mov z0.s, #0
; CHECK-NEXT: ret
  ret <vscale x 2 x float> zeroinitializer
}

define <vscale x 2 x double> @splat_nxv2f64_zero() {
; CHECK-LABEL: splat_nxv2f64_zero:
; CHECK: mov z0.d, #0
; CHECK-NEXT: ret
  ret <vscale x 2 x double> zeroinitializer
}

define <vscale x 8 x half> @splat_nxv8f16_imm() {
; CHECK-LABEL: splat_nxv8f16_imm:
; CHECK: fmov z0.h, #1.00000000
; CHECK-NEXT: ret
  %1 = insertelement <vscale x 8 x half> undef, half 1.0, i32 0
  %2 = shufflevector <vscale x 8 x half> %1, <vscale x 8 x half> undef, <vscale x 8 x i32> zeroinitializer
  ret <vscale x 8 x half> %2
}

define <vscale x 4 x half> @splat_nxv4f16_imm() {
; CHECK-LABEL: splat_nxv4f16_imm:
; CHECK: fmov z0.h, #1.00000000
; CHECK-NEXT: ret
  %1 = insertelement <vscale x 4 x half> undef, half 1.0, i32 0
  %2 = shufflevector <vscale x 4 x half> %1, <vscale x 4 x half> undef, <vscale x 4 x i32> zeroinitializer
  ret <vscale x 4 x half> %2
}

define <vscale x 2 x half> @splat_nxv2f16_imm() {
; CHECK-LABEL: splat_nxv2f16_imm:
; CHECK: fmov z0.h, #1.00000000
; CHECK-NEXT: ret
  %1 = insertelement <vscale x 2 x half> undef, half 1.0, i32 0
  %2 = shufflevector <vscale x 2 x half> %1, <vscale x 2 x half> undef, <vscale x 2 x i32> zeroinitializer
  ret <vscale x 2 x half> %2
}

define <vscale x 4 x float> @splat_nxv4f32_imm() {
; CHECK-LABEL: splat_nxv4f32_imm:
; CHECK: fmov z0.s, #1.00000000
; CHECK-NEXT: ret
  %1 = insertelement <vscale x 4 x float> undef, float 1.0, i32 0
  %2 = shufflevector <vscale x 4 x float> %1, <vscale x 4 x float> undef, <vscale x 4 x i32> zeroinitializer
  ret <vscale x 4 x float> %2
}

define <vscale x 2 x float> @splat_nxv2f32_imm() {
; CHECK-LABEL: splat_nxv2f32_imm:
; CHECK: fmov z0.s, #1.00000000
; CHECK-NEXT: ret
  %1 = insertelement <vscale x 2 x float> undef, float 1.0, i32 0
  %2 = shufflevector <vscale x 2 x float> %1, <vscale x 2 x float> undef, <vscale x 2 x i32> zeroinitializer
  ret <vscale x 2 x float> %2
}

define <vscale x 2 x double> @splat_nxv2f64_imm() {
; CHECK-LABEL: splat_nxv2f64_imm:
; CHECK: fmov z0.d, #1.00000000
; CHECK-NEXT: ret
  %1 = insertelement <vscale x 2 x double> undef, double 1.0, i32 0
  %2 = shufflevector <vscale x 2 x double> %1, <vscale x 2 x double> undef, <vscale x 2 x i32> zeroinitializer
  ret <vscale x 2 x double> %2
}

define <vscale x 4 x i32> @splat_nxv4i32_fold(<vscale x 4 x i32> %x) {
; CHECK-LABEL: splat_nxv4i32_fold:
; CHECK: mov z0.s, #0
; CHECK-NEXT: ret
  %r = sub <vscale x 4 x i32> %x, %x
  ret <vscale x 4 x i32> %r
}


define <vscale x 4 x float> @splat_nxv4f32_fold(<vscale x 4 x float> %x) {
; CHECK-LABEL: splat_nxv4f32_fold:
; CHECK: mov z0.s, #0
; CHECK-NEXT: ret
  %r = fsub nnan <vscale x 4 x float> %x, %x
  ret <vscale x 4 x float> %r
}

define <vscale x 2 x float> @splat_nxv2f32_fmov_fold() {
; CHECK-LABEL: splat_nxv2f32_fmov_fold
; CHECK: mov w8, #1109917696
; CHECK-NEXT: mov z0.s, w8
  %1 = insertelement <vscale x 2 x float> undef, float 4.200000e+01, i32 0
  %2 = shufflevector <vscale x 2 x float> %1, <vscale x 2 x float> undef, <vscale x 2 x i32> zeroinitializer
  ret <vscale x 2 x float> %2
}

define <vscale x 4 x float> @splat_nxv4f32_fmov_fold() {
; CHECK-LABEL: splat_nxv4f32_fmov_fold
; CHECK: mov w8, #1109917696
; CHECK-NEXT: mov z0.s, w8
  %1 = insertelement <vscale x 4 x float> undef, float 4.200000e+01, i32 0
  %2 = shufflevector <vscale x 4 x float> %1, <vscale x 4 x float> undef, <vscale x 4 x i32> zeroinitializer
  ret <vscale x 4 x float> %2
}

define <vscale x 2 x double> @splat_nxv2f64_fmov_fold() {
; CHECK-LABEL: splat_nxv2f64_fmov_fold
; CHECK: mov x8, #4631107791820423168
; CHECK-NEXT: mov z0.d, x8
  %1 = insertelement <vscale x 2 x double> undef, double 4.200000e+01, i32 0
  %2 = shufflevector <vscale x 2 x double> %1, <vscale x 2 x double> undef, <vscale x 2 x i32> zeroinitializer
  ret <vscale x 2 x double> %2
}

; +bf16 is required for the bfloat version.
attributes #0 = { "target-features"="+sve,+bf16" }