llvm/test/CodeGen/AArch64/arm64-build-vector.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=aarch64 -mattr=+fullfp16,+bf16 | FileCheck %s

; Check that building a vector from floats doesn't insert an unnecessary
; copy for lane zero.
define <4 x float>  @foo(float %a, float %b, float %c, float %d) nounwind {
; CHECK-LABEL: foo:
; CHECK:       // %bb.0:
; CHECK-NEXT:    // kill: def $s0 killed $s0 def $q0
; CHECK-NEXT:    // kill: def $s1 killed $s1 def $q1
; CHECK-NEXT:    // kill: def $s2 killed $s2 def $q2
; CHECK-NEXT:    // kill: def $s3 killed $s3 def $q3
; CHECK-NEXT:    mov v0.s[1], v1.s[0]
; CHECK-NEXT:    mov v0.s[2], v2.s[0]
; CHECK-NEXT:    mov v0.s[3], v3.s[0]
; CHECK-NEXT:    ret
  %1 = insertelement <4 x float> undef, float %a, i32 0
  %2 = insertelement <4 x float> %1, float %b, i32 1
  %3 = insertelement <4 x float> %2, float %c, i32 2
  %4 = insertelement <4 x float> %3, float %d, i32 3
  ret <4 x float> %4
}

define <8 x i16> @build_all_zero(<8 x i16> %a) #1 {
; CHECK-LABEL: build_all_zero:
; CHECK:       // %bb.0:
; CHECK-NEXT:    mov w8, #44672 // =0xae80
; CHECK-NEXT:    fmov s1, w8
; CHECK-NEXT:    mul v0.8h, v0.8h, v1.8h
; CHECK-NEXT:    ret
  %b = add <8 x i16> %a, <i16 -32768, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef>
  %c = mul <8 x i16> %b, <i16 -20864, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef, i16 undef>
  ret <8 x i16> %c
}

; There is an optimization in DAG Combiner as following:
;   fold (concat_vectors (BUILD_VECTOR A, B, ...), (BUILD_VECTOR C, D, ...))
;        -> (BUILD_VECTOR A, B, ..., C, D, ...)
; This case checks when A,B and C,D are different types, there should be no
; assertion failure.
define <8 x i16> @concat_2_build_vector(<4 x i16> %in0) {
; CHECK-LABEL: concat_2_build_vector:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi v0.2d, #0000000000000000
; CHECK-NEXT:    ret
  %vshl_n = shl <4 x i16> %in0, <i16 8, i16 8, i16 8, i16 8>
  %vshl_n2 = shl <4 x i16> %vshl_n, <i16 9, i16 9, i16 9, i16 9>
  %shuffle.i = shufflevector <4 x i16> %vshl_n2, <4 x i16> zeroinitializer, <8 x i32> <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7>
  ret <8 x i16> %shuffle.i
}

; The lowering of a widened f16 BUILD_VECTOR tries to optimize it by building
; an equivalent integer vector and BITCAST-ing that. This case checks that
; normalizing the vector generates a valid result. The choice of the
; constant prevents earlier passes from replacing the BUILD_VECTOR.
define void @widen_f16_build_vector(ptr %addr) {
; CHECK-LABEL: widen_f16_build_vector:
; CHECK:       // %bb.0:
; CHECK-NEXT:    mov w8, #13294 // =0x33ee
; CHECK-NEXT:    movk w8, #13294, lsl #16
; CHECK-NEXT:    str w8, [x0]
; CHECK-NEXT:    ret
  store <2 x half> <half 0xH33EE, half 0xH33EE>, ptr %addr, align 2
  ret void
}

; Check that a single element vector is constructed with a mov
define <1 x i64> @single_element_vector_i64(<1 x i64> %arg) {
; CHECK-LABEL: single_element_vector_i64:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    mov w8, #1 // =0x1
; CHECK-NEXT:    fmov d1, x8
; CHECK-NEXT:    add d0, d0, d1
; CHECK-NEXT:    ret
entry:
  %add = add <1 x i64> %arg, <i64 1>
  ret <1 x i64> %add
}

define <1 x double> @single_element_vector_double(<1 x double> %arg) {
; CHECK-LABEL: single_element_vector_double:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    fmov d1, #1.00000000
; CHECK-NEXT:    fadd d0, d0, d1
; CHECK-NEXT:    ret
entry:
  %add = fadd <1 x double> %arg, <double 1.0>
  ret <1 x double> %add
}

; Make sure BUILD_VECTOR does not get stuck in a loop trying to convert a
; single element FP vector constant from a scalar to vector.
define <1 x double> @convert_single_fp_vector_constant(i1 %cmp) {
; CHECK-LABEL: convert_single_fp_vector_constant:
; CHECK:       // %bb.0: // %entry
; CHECK-NEXT:    tst w0, #0x1
; CHECK-NEXT:    mov x8, #4607182418800017408 // =0x3ff0000000000000
; CHECK-NEXT:    csetm x9, ne
; CHECK-NEXT:    fmov d0, x8
; CHECK-NEXT:    fmov d1, x9
; CHECK-NEXT:    and v0.8b, v0.8b, v1.8b
; CHECK-NEXT:    ret
entry:
  %sel = select i1 %cmp, <1 x double> <double 1.000000e+00>, <1 x double> zeroinitializer
  ret <1 x double> %sel
}

; All Zero and All -Zero tests.

define <2 x double> @poszero_v2f64(<2 x double> %a) {
; CHECK-LABEL: poszero_v2f64:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi v1.2d, #0000000000000000
; CHECK-NEXT:    fadd v0.2d, v0.2d, v1.2d
; CHECK-NEXT:    ret
  %b = fadd <2 x double> %a, <double 0.0, double 0.0>
  ret <2 x double> %b
}

define <2 x double> @negzero_v2f64(<2 x double> %a) {
; CHECK-LABEL: negzero_v2f64:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi v1.2d, #0000000000000000
; CHECK-NEXT:    fneg v1.2d, v1.2d
; CHECK-NEXT:    fmul v0.2d, v0.2d, v1.2d
; CHECK-NEXT:    ret
  %b = fmul <2 x double> %a, <double -0.0, double -0.0>
  ret <2 x double> %b
}

define <1 x double> @poszero_v1f64(<1 x double> %a) {
; CHECK-LABEL: poszero_v1f64:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi d1, #0000000000000000
; CHECK-NEXT:    fadd d0, d0, d1
; CHECK-NEXT:    ret
  %b = fadd <1 x double> %a, <double 0.0>
  ret <1 x double> %b
}

define <1 x double> @negzero_v1f64(<1 x double> %a) {
; CHECK-LABEL: negzero_v1f64:
; CHECK:       // %bb.0:
; CHECK-NEXT:    mov x8, #-9223372036854775808 // =0x8000000000000000
; CHECK-NEXT:    fmov d1, x8
; CHECK-NEXT:    fmul d0, d0, d1
; CHECK-NEXT:    ret
  %b = fmul <1 x double> %a, <double -0.0>
  ret <1 x double> %b
}

define <4 x float> @poszero_v4f32(<4 x float> %a) {
; CHECK-LABEL: poszero_v4f32:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi v1.2d, #0000000000000000
; CHECK-NEXT:    fadd v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    ret
  %b = fadd <4 x float> %a, <float 0.0, float 0.0, float 0.0, float 0.0>
  ret <4 x float> %b
}

define <4 x float> @negzero_v4f32(<4 x float> %a) {
; CHECK-LABEL: negzero_v4f32:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi v1.4s, #128, lsl #24
; CHECK-NEXT:    fmul v0.4s, v0.4s, v1.4s
; CHECK-NEXT:    ret
  %b = fmul <4 x float> %a, <float -0.0, float -0.0, float -0.0, float -0.0>
  ret <4 x float> %b
}

define <2 x float> @poszero_v2f32(<2 x float> %a) {
; CHECK-LABEL: poszero_v2f32:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi d1, #0000000000000000
; CHECK-NEXT:    fadd v0.2s, v0.2s, v1.2s
; CHECK-NEXT:    ret
  %b = fadd <2 x float> %a, <float 0.0, float 0.0>
  ret <2 x float> %b
}

define <2 x float> @negzero_v2f32(<2 x float> %a) {
; CHECK-LABEL: negzero_v2f32:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi v1.2s, #128, lsl #24
; CHECK-NEXT:    fmul v0.2s, v0.2s, v1.2s
; CHECK-NEXT:    ret
  %b = fmul <2 x float> %a, <float -0.0, float -0.0>
  ret <2 x float> %b
}

define <8 x half> @poszero_v8f16(<8 x half> %a) {
; CHECK-LABEL: poszero_v8f16:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi v1.2d, #0000000000000000
; CHECK-NEXT:    fadd v0.8h, v0.8h, v1.8h
; CHECK-NEXT:    ret
  %b = fadd <8 x half> %a, <half 0.0, half 0.0, half 0.0, half 0.0, half 0.0, half 0.0, half 0.0, half 0.0>
  ret <8 x half> %b
}

define <8 x half> @negzero_v8f16(<8 x half> %a) {
; CHECK-LABEL: negzero_v8f16:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi v1.8h, #128, lsl #8
; CHECK-NEXT:    fmul v0.8h, v0.8h, v1.8h
; CHECK-NEXT:    ret
  %b = fmul <8 x half> %a, <half -0.0, half -0.0, half -0.0, half -0.0, half -0.0, half -0.0, half -0.0, half -0.0>
  ret <8 x half> %b
}

define <4 x half> @poszero_v4f16(<4 x half> %a) {
; CHECK-LABEL: poszero_v4f16:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi d1, #0000000000000000
; CHECK-NEXT:    fadd v0.4h, v0.4h, v1.4h
; CHECK-NEXT:    ret
  %b = fadd <4 x half> %a, <half 0.0, half 0.0, half 0.0, half 0.0>
  ret <4 x half> %b
}

define <4 x half> @negzero_v4f16(<4 x half> %a) {
; CHECK-LABEL: negzero_v4f16:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi v1.4h, #128, lsl #8
; CHECK-NEXT:    fmul v0.4h, v0.4h, v1.4h
; CHECK-NEXT:    ret
  %b = fmul <4 x half> %a, <half -0.0, half -0.0, half -0.0, half -0.0>
  ret <4 x half> %b
}

define <8 x bfloat> @poszero_v8bf16(<8 x bfloat> %a) {
; CHECK-LABEL: poszero_v8bf16:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi v0.2d, #0000000000000000
; CHECK-NEXT:    ret
  ret <8 x bfloat> <bfloat 0.0, bfloat 0.0, bfloat 0.0, bfloat 0.0, bfloat 0.0, bfloat 0.0, bfloat 0.0, bfloat 0.0>
}

define <8 x bfloat> @negzero_v8bf16(<8 x bfloat> %a) {
; CHECK-LABEL: negzero_v8bf16:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi v0.8h, #128, lsl #8
; CHECK-NEXT:    ret
  ret <8 x bfloat> <bfloat -0.0, bfloat -0.0, bfloat -0.0, bfloat -0.0, bfloat -0.0, bfloat -0.0, bfloat -0.0, bfloat -0.0>
}

define <4 x bfloat> @poszero_v4bf16(<4 x bfloat> %a) {
; CHECK-LABEL: poszero_v4bf16:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi d0, #0000000000000000
; CHECK-NEXT:    ret
  ret <4 x bfloat> <bfloat 0.0, bfloat 0.0, bfloat 0.0, bfloat 0.0>
}

define <4 x bfloat> @negzero_v4bf16(<4 x bfloat> %a) {
; CHECK-LABEL: negzero_v4bf16:
; CHECK:       // %bb.0:
; CHECK-NEXT:    movi v0.4h, #128, lsl #8
; CHECK-NEXT:    ret
  ret <4 x bfloat> <bfloat -0.0, bfloat -0.0, bfloat -0.0, bfloat -0.0>
}