llvm/test/Transforms/SLPVectorizer/X86/extract-with-undefs-shuffle.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
; RUN: opt -S --passes=slp-vectorizer -slp-threshold=-99999 -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s

define void @test(i32 %arg) {
; CHECK-LABEL: define void @test(
; CHECK-SAME: i32 [[ARG:%.*]]) {
; CHECK-NEXT:  bb:
; CHECK-NEXT:    br label [[BB1:%.*]]
; CHECK:       bb1:
; CHECK-NEXT:    br label [[BB13:%.*]]
; CHECK:       bb4:
; CHECK-NEXT:    [[TMP0:%.*]] = phi <2 x i32> [ poison, [[BB24:%.*]] ], [ [[TMP1:%.*]], [[BB13]] ]
; CHECK-NEXT:    br label [[BB1]]
; CHECK:       bb12:
; CHECK-NEXT:    br label [[BB13]]
; CHECK:       bb13:
; CHECK-NEXT:    [[TMP1]] = phi <2 x i32> [ zeroinitializer, [[BB1]] ], [ poison, [[BB12:%.*]] ]
; CHECK-NEXT:    [[TMP2:%.*]] = phi <8 x i32> [ zeroinitializer, [[BB1]] ], [ poison, [[BB12]] ]
; CHECK-NEXT:    br label [[BB4:%.*]]
; CHECK:       bb24:
; CHECK-NEXT:    br label [[BB4]]
;
bb:
  br label %bb1

bb1:
  %0 = extractelement <2 x i32> zeroinitializer, i32 0
  br label %bb13

bb4:
  %phi26 = phi i32 [ 0, %bb24 ], [ %phi14, %bb13 ]
  %phi27 = phi i32 [ 0, %bb24 ], [ %phi16, %bb13 ]
  br label %bb1

bb12:
  %add = add i32 0, 0
  br label %bb13

bb13:
  %phi14 = phi i32 [ 0, %bb1 ], [ 0, %bb12 ]
  %phi15 = phi i32 [ %0, %bb1 ], [ 0, %bb12 ]
  %phi16 = phi i32 [ 0, %bb1 ], [ 0, %bb12 ]
  %phi17 = phi i32 [ undef, %bb1 ], [ %arg, %bb12 ]
  %phi18 = phi i32 [ undef, %bb1 ], [ %arg, %bb12 ]
  %phi19 = phi i32 [ undef, %bb1 ], [ %arg, %bb12 ]
  %phi20 = phi i32 [ undef, %bb1 ], [ %add, %bb12 ]
  %phi21 = phi i32 [ undef, %bb1 ], [ 0, %bb12 ]
  %phi22 = phi i32 [ undef, %bb1 ], [ 0, %bb12 ]
  %phi23 = phi i32 [ undef, %bb1 ], [ 0, %bb12 ]
  br label %bb4

bb24:
  br label %bb4
}