; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -instcombine -S < %s | FileCheck %s

define void @scalarize_phi(i32 * %n, float * %inout) {
; CHECK-LABEL: @scalarize_phi(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[T0:%.*]] = load volatile float, float* [[INOUT:%.*]], align 4
; CHECK-NEXT:    br label [[FOR_COND:%.*]]
; CHECK:       for.cond:
; CHECK-NEXT:    [[TMP0:%.*]] = phi float [ [[T0]], [[ENTRY:%.*]] ], [ [[TMP1:%.*]], [[FOR_BODY:%.*]] ]
; CHECK-NEXT:    [[I_0:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT:    [[T1:%.*]] = load i32, i32* [[N:%.*]], align 4
; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[I_0]], [[T1]]
; CHECK-NEXT:    br i1 [[CMP]], label [[FOR_END:%.*]], label [[FOR_BODY]]
; CHECK:       for.body:
; CHECK-NEXT:    store volatile float [[TMP0]], float* [[INOUT]], align 4
; CHECK-NEXT:    [[TMP1]] = fmul float [[TMP0]], 0x4002A3D700000000
; CHECK-NEXT:    [[INC]] = add nuw nsw i32 [[I_0]], 1
; CHECK-NEXT:    br label [[FOR_COND]]
; CHECK:       for.end:
; CHECK-NEXT:    ret void
;
entry:
  %t0 = load volatile float, float * %inout, align 4
  %insert = insertelement <4 x float> undef, float %t0, i32 0
  %splat = shufflevector <4 x float> %insert, <4 x float> undef, <4 x i32> zeroinitializer
  %insert1 = insertelement <4 x float> undef, float 3.0, i32 0
  br label %for.cond

for.cond:
  %x.0 = phi <4 x float> [ %splat, %entry ], [ %mul, %for.body ]
  %i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
  %t1 = load i32, i32 * %n, align 4
  %cmp = icmp ne i32 %i.0, %t1
  br i1 %cmp, label %for.body, label %for.end

for.body:
  %t2 = extractelement <4 x float> %x.0, i32 1
  store volatile float %t2, float * %inout, align 4
  %mul = fmul <4 x float> %x.0, <float 0x4002A3D700000000, float 0x4002A3D700000000, float 0x4002A3D700000000, float 0x4002A3D700000000>
  %inc = add nsw i32 %i.0, 1
  br label %for.cond

for.end:
  ret void
}

define float @extract_element_constant_index(<4 x float> %x) {
; CHECK-LABEL: @extract_element_constant_index(
; CHECK-NEXT:    [[R_LHS:%.*]] = extractelement <4 x float> [[X:%.*]], i32 2
; CHECK-NEXT:    [[R:%.*]] = fadd float [[R_LHS]], 0x4002A3D700000000
; CHECK-NEXT:    ret float [[R]]
;
  %add = fadd <4 x float> %x, <float 0x4002A3D700000000, float 0x4002A3D700000000, float 0x4002A3D700000000, float 0x4002A3D700000000>
  %r = extractelement <4 x float> %add, i32 2
  ret float %r
}

define float @extract_element_variable_index(<4 x float> %x, i32 %y) {
; CHECK-LABEL: @extract_element_variable_index(
; CHECK-NEXT:    [[R_LHS:%.*]] = extractelement <4 x float> [[X:%.*]], i32 [[Y:%.*]]
; CHECK-NEXT:    [[R:%.*]] = fadd float [[R_LHS]], 1.000000e+00
; CHECK-NEXT:    ret float [[R]]
;
  %add = fadd <4 x float> %x, <float 1.0, float 1.0, float 1.0, float 1.0>
  %r = extractelement <4 x float> %add, i32 %y
  ret float %r
}

define float @extract_element_splat_constant_vector_variable_index(i32 %y) {
; CHECK-LABEL: @extract_element_splat_constant_vector_variable_index(
; CHECK-NEXT:    ret float 2.000000e+00
;
  %r = extractelement <4 x float> <float 2.0, float 2.0, float 2.0, float 2.0>, i32 %y
  ret float %r
}

define float @extract_element_constant_vector_variable_index(i32 %y) {
; CHECK-LABEL: @extract_element_constant_vector_variable_index(
; CHECK-NEXT:    [[R:%.*]] = extractelement <4 x float> <float 1.000000e+00, float 2.000000e+00, float 3.000000e+00, float 4.000000e+00>, i32 [[Y:%.*]]
; CHECK-NEXT:    ret float [[R]]
;
  %r = extractelement <4 x float> <float 1.0, float 2.0, float 3.0, float 4.0>, i32 %y
  ret float %r
}