File: PR35628_2.ll

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llvm-toolchain-19 1%3A19.1.7-3~deb12u1
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes=slp-vectorizer -slp-vectorize-hor -slp-vectorize-hor-store -S < %s -mtriple=x86_64-unknown-linux-gnu -mcpu=haswell | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128-ni:1"

define void @test() #0 {
; CHECK-LABEL: @test(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br label [[LOOP:%.*]]
; CHECK:       loop:
; CHECK-NEXT:    [[DUMMY_PHI:%.*]] = phi i64 [ 1, [[ENTRY:%.*]] ], [ [[OP_RDX1:%.*]], [[LOOP]] ]
; CHECK-NEXT:    [[TMP0:%.*]] = phi i64 [ 2, [[ENTRY]] ], [ [[TMP4:%.*]], [[LOOP]] ]
; CHECK-NEXT:    [[TMP1:%.*]] = insertelement <4 x i64> poison, i64 [[TMP0]], i32 0
; CHECK-NEXT:    [[TMP2:%.*]] = shufflevector <4 x i64> [[TMP1]], <4 x i64> poison, <4 x i32> zeroinitializer
; CHECK-NEXT:    [[TMP3:%.*]] = add <4 x i64> [[TMP2]], <i64 3, i64 2, i64 1, i64 0>
; CHECK-NEXT:    [[TMP4]] = extractelement <4 x i64> [[TMP3]], i32 3
; CHECK-NEXT:    [[DUMMY_ADD:%.*]] = add i16 0, 0
; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <4 x i64> [[TMP3]], i32 0
; CHECK-NEXT:    [[DUMMY_SHL:%.*]] = shl i64 [[TMP5]], 32
; CHECK-NEXT:    [[TMP6:%.*]] = add <4 x i64> <i64 1, i64 1, i64 1, i64 1>, [[TMP3]]
; CHECK-NEXT:    [[TMP7:%.*]] = ashr exact <4 x i64> [[TMP6]], <i64 32, i64 32, i64 32, i64 32>
; CHECK-NEXT:    [[TMP8:%.*]] = call i64 @llvm.vector.reduce.add.v4i64(<4 x i64> [[TMP7]])
; CHECK-NEXT:    [[OP_RDX:%.*]] = add i64 [[TMP8]], [[TMP4]]
; CHECK-NEXT:    [[OP_RDX1]] = add i64 [[OP_RDX]], 0
; CHECK-NEXT:    br label [[LOOP]]
;
entry:
  br label %loop

loop:
  %dummy_phi = phi i64 [ 1, %entry ], [ %last, %loop ]
  %0 = phi i64 [ 2, %entry ], [ %fork, %loop ]
  %inc1 = add i64 %0, 1
  %inc2 = add i64 %0, 2
  %inc11 = add i64 1, %inc1
  %exact1 = ashr exact i64 %inc11, 32
  %inc3 = add i64 %0, 3
  %dummy_add = add i16 0, 0
  %inc12 = add i64 1, %inc2
  %exact2 = ashr exact i64 %inc12, 32
  %dummy_shl = shl i64 %inc3, 32
  %inc13 = add i64 1, %inc3
  %exact3 = ashr exact i64 %inc13, 32
  %fork = add i64 %0, 0
  %sum1 = add i64 %exact3, %exact2
  %sum2 = add i64 %sum1, %exact1
  %zsum = add i64 %sum2, 0
  %sext22 = add i64 1, %fork
  %exact4 = ashr exact i64 %sext22, 32
  %join = add i64 %fork, %zsum
  %last = add i64 %join, %exact4
  br label %loop
}