; RUN: opt -S -scalarizer -dxil-op-lower -mtriple=dxil-pc-shadermodel6.3-library %s | FileCheck %s

; Make sure dxil operation function calls for atan are generated for float and half.

define noundef float @atan_float(float noundef %a) {
entry:
; CHECK:call float @dx.op.unary.f32(i32 17, float %{{.*}})
  %elt.atan = call float @llvm.atan.f32(float %a)
  ret float %elt.atan
}

define noundef half @atan_half(half noundef %a) {
entry:
; CHECK:call half @dx.op.unary.f16(i32 17, half %{{.*}})
  %elt.atan = call half @llvm.atan.f16(half %a)
  ret half %elt.atan
}

define noundef <4 x float> @atan_float4(<4 x float> noundef %a) {
entry:
  ; CHECK: [[ee0:%.*]] = extractelement <4 x float> %a, i64 0
  ; CHECK: [[ie0:%.*]] = call float @dx.op.unary.f32(i32 17, float [[ee0]])
  ; CHECK: [[ee1:%.*]] = extractelement <4 x float> %a, i64 1
  ; CHECK: [[ie1:%.*]] = call float @dx.op.unary.f32(i32 17, float [[ee1]])
  ; CHECK: [[ee2:%.*]] = extractelement <4 x float> %a, i64 2
  ; CHECK: [[ie2:%.*]] = call float @dx.op.unary.f32(i32 17, float [[ee2]])
  ; CHECK: [[ee3:%.*]] = extractelement <4 x float> %a, i64 3
  ; CHECK: [[ie3:%.*]] = call float @dx.op.unary.f32(i32 17, float [[ee3]])
  ; CHECK: insertelement <4 x float> poison, float [[ie0]], i64 0
  ; CHECK: insertelement <4 x float> %{{.*}}, float [[ie1]], i64 1
  ; CHECK: insertelement <4 x float> %{{.*}}, float [[ie2]], i64 2
  ; CHECK: insertelement <4 x float> %{{.*}}, float [[ie3]], i64 3
  %2 = call <4 x float> @llvm.atan.v4f32(<4 x float> %a)
  ret <4 x float> %2
}

; CHECK-DAG: declare half @dx.op.unary.f16(i32, half) #[[#ATTR0:]]
; CHECK-DAG: declare float @dx.op.unary.f32(i32, float) #[[#ATTR0]]
; CHECK: attributes #[[#ATTR0]] = { nounwind memory(none) }

declare half @llvm.atan.f16(half)
declare float @llvm.atan.f32(float)
declare <4 x float> @llvm.atan.v4f32(<4 x float>)