; LLVM IR from FedericaPaoli1/stm32-speech-recognition-and-traduction :: Drivers/CMSIS/DSP/Source/TransformFunctions (arm_cfft_f64)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

%struct.arm_cfft_instance_f64 = type { i16, ptr, ptr, i16 }

; Function Attrs: nounwind uwtable
declare dso_local void @arm_radix4_butterfly_f64(ptr noundef, i16 noundef zeroext, ptr noundef, i16 noundef zeroext) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
declare dso_local void @arm_cfft_radix4by2_f64(ptr noundef, i32 noundef, ptr noundef) #0

; Function Attrs: nounwind uwtable
define dso_local void @arm_cfft_f64(ptr noundef %0, ptr noundef %1, i8 noundef zeroext %2, i8 noundef zeroext %3) #0 {
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i8, align 1
  %8 = alloca i8, align 1
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca double, align 8
  %12 = alloca ptr, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i8 %2, ptr %7, align 1, !tbaa !9
  store i8 %3, ptr %8, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.arm_cfft_instance_f64, ptr %13, i32 0, i32 0
  %15 = load i16, ptr %14, align 8, !tbaa !10
  %16 = zext i16 %15 to i32
  store i32 %16, ptr %9, align 4, !tbaa !13
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #3
  %17 = load i8, ptr %7, align 1, !tbaa !9
  %18 = zext i8 %17 to i32
  %19 = icmp eq i32 %18, 1
  br i1 %19, label %20, label %38

20:                                               ; preds = %4
  %21 = load ptr, ptr %6, align 8, !tbaa !5
  %22 = getelementptr inbounds double, ptr %21, i64 1
  store ptr %22, ptr %12, align 8, !tbaa !5
  store i32 0, ptr %10, align 4, !tbaa !13
  br label %23

23:                                               ; preds = %34, %20
  %24 = load i32, ptr %10, align 4, !tbaa !13
  %25 = load i32, ptr %9, align 4, !tbaa !13
  %26 = icmp ult i32 %24, %25
  br i1 %26, label %27, label %37

27:                                               ; preds = %23
  %28 = load ptr, ptr %12, align 8, !tbaa !5
  %29 = load double, ptr %28, align 8, !tbaa !15
  %30 = fneg double %29
  %31 = load ptr, ptr %12, align 8, !tbaa !5
  store double %30, ptr %31, align 8, !tbaa !15
  %32 = load ptr, ptr %12, align 8, !tbaa !5
  %33 = getelementptr inbounds double, ptr %32, i64 2
  store ptr %33, ptr %12, align 8, !tbaa !5
  br label %34

34:                                               ; preds = %27
  %35 = load i32, ptr %10, align 4, !tbaa !13
  %36 = add i32 %35, 1
  store i32 %36, ptr %10, align 4, !tbaa !13
  br label %23, !llvm.loop !17

37:                                               ; preds = %23
  br label %38

38:                                               ; preds = %37, %4
  %39 = load i32, ptr %9, align 4, !tbaa !13
  switch i32 %39, label %53 [
    i32 16, label %40
    i32 64, label %40
    i32 256, label %40
    i32 1024, label %40
    i32 4096, label %40
    i32 32, label %47
    i32 128, label %47
    i32 512, label %47
    i32 2048, label %47
  ]

40:                                               ; preds = %38, %38, %38, %38, %38
  %41 = load ptr, ptr %6, align 8, !tbaa !5
  %42 = load i32, ptr %9, align 4, !tbaa !13
  %43 = trunc i32 %42 to i16
  %44 = load ptr, ptr %5, align 8, !tbaa !5
  %45 = getelementptr inbounds %struct.arm_cfft_instance_f64, ptr %44, i32 0, i32 1
  %46 = load ptr, ptr %45, align 8, !tbaa !19
  call void @arm_radix4_butterfly_f64(ptr noundef %41, i16 noundef zeroext %43, ptr noundef %46, i16 noundef zeroext 1)
  br label %53

47:                                               ; preds = %38, %38, %38, %38
  %48 = load ptr, ptr %6, align 8, !tbaa !5
  %49 = load i32, ptr %9, align 4, !tbaa !13
  %50 = load ptr, ptr %5, align 8, !tbaa !5
  %51 = getelementptr inbounds %struct.arm_cfft_instance_f64, ptr %50, i32 0, i32 1
  %52 = load ptr, ptr %51, align 8, !tbaa !19
  call void @arm_cfft_radix4by2_f64(ptr noundef %48, i32 noundef %49, ptr noundef %52)
  br label %53

53:                                               ; preds = %47, %40, %38
  %54 = load i8, ptr %8, align 1, !tbaa !9
  %55 = icmp ne i8 %54, 0
  br i1 %55, label %56, label %64

56:                                               ; preds = %53
  %57 = load ptr, ptr %6, align 8, !tbaa !5
  %58 = load ptr, ptr %5, align 8, !tbaa !5
  %59 = getelementptr inbounds %struct.arm_cfft_instance_f64, ptr %58, i32 0, i32 3
  %60 = load i16, ptr %59, align 8, !tbaa !20
  %61 = load ptr, ptr %5, align 8, !tbaa !5
  %62 = getelementptr inbounds %struct.arm_cfft_instance_f64, ptr %61, i32 0, i32 2
  %63 = load ptr, ptr %62, align 8, !tbaa !21
  call void @arm_bitreversal_64(ptr noundef %57, i16 noundef zeroext %60, ptr noundef %63)
  br label %64

64:                                               ; preds = %56, %53
  %65 = load i8, ptr %7, align 1, !tbaa !9
  %66 = zext i8 %65 to i32
  %67 = icmp eq i32 %66, 1
  br i1 %67, label %68, label %95

68:                                               ; preds = %64
  %69 = load i32, ptr %9, align 4, !tbaa !13
  %70 = uitofp i32 %69 to double
  %71 = fdiv double 1.000000e+00, %70
  store double %71, ptr %11, align 8, !tbaa !15
  %72 = load ptr, ptr %6, align 8, !tbaa !5
  store ptr %72, ptr %12, align 8, !tbaa !5
  store i32 0, ptr %10, align 4, !tbaa !13
  br label %73

73:                                               ; preds = %91, %68
  %74 = load i32, ptr %10, align 4, !tbaa !13
  %75 = load i32, ptr %9, align 4, !tbaa !13
  %76 = icmp ult i32 %74, %75
  br i1 %76, label %77, label %94

77:                                               ; preds = %73
  %78 = load double, ptr %11, align 8, !tbaa !15
  %79 = load ptr, ptr %12, align 8, !tbaa !5
  %80 = getelementptr inbounds double, ptr %79, i32 1
  store ptr %80, ptr %12, align 8, !tbaa !5
  %81 = load double, ptr %79, align 8, !tbaa !15
  %82 = fmul double %81, %78
  store double %82, ptr %79, align 8, !tbaa !15
  %83 = load ptr, ptr %12, align 8, !tbaa !5
  %84 = load double, ptr %83, align 8, !tbaa !15
  %85 = fneg double %84
  %86 = load double, ptr %11, align 8, !tbaa !15
  %87 = fmul double %85, %86
  %88 = load ptr, ptr %12, align 8, !tbaa !5
  store double %87, ptr %88, align 8, !tbaa !15
  %89 = load ptr, ptr %12, align 8, !tbaa !5
  %90 = getelementptr inbounds double, ptr %89, i32 1
  store ptr %90, ptr %12, align 8, !tbaa !5
  br label %91

91:                                               ; preds = %77
  %92 = load i32, ptr %10, align 4, !tbaa !13
  %93 = add i32 %92, 1
  store i32 %93, ptr %10, align 4, !tbaa !13
  br label %73, !llvm.loop !22

94:                                               ; preds = %73
  br label %95

95:                                               ; preds = %94, %64
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  ret void
}

declare void @arm_bitreversal_64(ptr noundef, i16 noundef zeroext, ptr noundef) #2

attributes #0 = { nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = !{!11, !12, i64 0}
!11 = !{!"", !12, i64 0, !6, i64 8, !6, i64 16, !12, i64 24}
!12 = !{!"short", !7, i64 0}
!13 = !{!14, !14, i64 0}
!14 = !{!"int", !7, i64 0}
!15 = !{!16, !16, i64 0}
!16 = !{!"double", !7, i64 0}
!17 = distinct !{!17, !18}
!18 = !{!"llvm.loop.mustprogress"}
!19 = !{!11, !6, i64 8}
!20 = !{!11, !12, i64 24}
!21 = !{!11, !6, i64 16}
!22 = distinct !{!22, !18}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

; Function Attrs: nounwind uwtable
declare dso_local void @arm_radix4_butterfly_f64(ptr noundef, i16 noundef zeroext, ptr noundef, i16 noundef zeroext) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local void @arm_cfft_radix4by2_f64(ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @arm_cfft_f64(ptr nocapture noundef readonly %0, ptr noundef %1, i8 noundef zeroext %2, i8 noundef zeroext %3) local_unnamed_addr #0 {
  %5 = load i16, ptr %0, align 8, !tbaa !5
  %6 = zext i16 %5 to i32
  %7 = icmp eq i8 %2, 1
  %8 = icmp ne i16 %5, 0
  %or.cond = select i1 %7, i1 %8, i1 false
  br i1 %or.cond, label %.lr.ph.preheader, label %.loopexit33

.lr.ph.preheader:                                 ; preds = %4
  %9 = getelementptr inbounds i8, ptr %1, i64 8
  %xtraiter = and i32 %6, 3
  %10 = icmp ult i16 %5, 4
  br i1 %10, label %.loopexit33.loopexit.unr-lcssa, label %.lr.ph.preheader.new

.lr.ph.preheader.new:                             ; preds = %.lr.ph.preheader
  %unroll_iter = and i32 %6, 65532
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader.new
  %.035 = phi ptr [ %9, %.lr.ph.preheader.new ], [ %22, %.lr.ph ]
  %niter = phi i32 [ 0, %.lr.ph.preheader.new ], [ %niter.next.3, %.lr.ph ]
  %11 = load double, ptr %.035, align 8, !tbaa !11
  %12 = fneg double %11
  store double %12, ptr %.035, align 8, !tbaa !11
  %13 = getelementptr inbounds i8, ptr %.035, i64 16
  %14 = load double, ptr %13, align 8, !tbaa !11
  %15 = fneg double %14
  store double %15, ptr %13, align 8, !tbaa !11
  %16 = getelementptr inbounds i8, ptr %.035, i64 32
  %17 = load double, ptr %16, align 8, !tbaa !11
  %18 = fneg double %17
  store double %18, ptr %16, align 8, !tbaa !11
  %19 = getelementptr inbounds i8, ptr %.035, i64 48
  %20 = load double, ptr %19, align 8, !tbaa !11
  %21 = fneg double %20
  store double %21, ptr %19, align 8, !tbaa !11
  %22 = getelementptr inbounds i8, ptr %.035, i64 64
  %niter.next.3 = add i32 %niter, 4
  %niter.ncmp.3 = icmp eq i32 %niter.next.3, %unroll_iter
  br i1 %niter.ncmp.3, label %.loopexit33.loopexit.unr-lcssa, label %.lr.ph, !llvm.loop !13

.loopexit33.loopexit.unr-lcssa:                   ; preds = %.lr.ph, %.lr.ph.preheader
  %.035.unr = phi ptr [ %9, %.lr.ph.preheader ], [ %22, %.lr.ph ]
  %lcmp.mod.not = icmp eq i32 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.loopexit33, label %.lr.ph.epil

.lr.ph.epil:                                      ; preds = %.loopexit33.loopexit.unr-lcssa, %.lr.ph.epil
  %.035.epil = phi ptr [ %25, %.lr.ph.epil ], [ %.035.unr, %.loopexit33.loopexit.unr-lcssa ]
  %epil.iter = phi i32 [ %epil.iter.next, %.lr.ph.epil ], [ 0, %.loopexit33.loopexit.unr-lcssa ]
  %23 = load double, ptr %.035.epil, align 8, !tbaa !11
  %24 = fneg double %23
  store double %24, ptr %.035.epil, align 8, !tbaa !11
  %25 = getelementptr inbounds i8, ptr %.035.epil, i64 16
  %epil.iter.next = add i32 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i32 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %.loopexit33, label %.lr.ph.epil, !llvm.loop !15

.loopexit33:                                      ; preds = %.loopexit33.loopexit.unr-lcssa, %.lr.ph.epil, %4
  switch i16 %5, label %32 [
    i16 16, label %26
    i16 64, label %26
    i16 256, label %26
    i16 1024, label %26
    i16 4096, label %26
    i16 32, label %29
    i16 128, label %29
    i16 512, label %29
    i16 2048, label %29
  ]

26:                                               ; preds = %.loopexit33, %.loopexit33, %.loopexit33, %.loopexit33, %.loopexit33
  %27 = getelementptr inbounds i8, ptr %0, i64 8
  %28 = load ptr, ptr %27, align 8, !tbaa !17
  tail call void @arm_radix4_butterfly_f64(ptr noundef %1, i16 noundef zeroext %5, ptr noundef %28, i16 noundef zeroext 1)
  br label %32

29:                                               ; preds = %.loopexit33, %.loopexit33, %.loopexit33, %.loopexit33
  %30 = getelementptr inbounds i8, ptr %0, i64 8
  %31 = load ptr, ptr %30, align 8, !tbaa !17
  tail call void @arm_cfft_radix4by2_f64(ptr noundef %1, i32 noundef %6, ptr noundef %31)
  br label %32

32:                                               ; preds = %29, %26, %.loopexit33
  %.not = icmp eq i8 %3, 0
  br i1 %.not, label %38, label %33

33:                                               ; preds = %32
  %34 = getelementptr inbounds i8, ptr %0, i64 24
  %35 = load i16, ptr %34, align 8, !tbaa !18
  %36 = getelementptr inbounds i8, ptr %0, i64 16
  %37 = load ptr, ptr %36, align 8, !tbaa !19
  tail call void @arm_bitreversal_64(ptr noundef %1, i16 noundef zeroext %35, ptr noundef %37) #2
  br label %38

38:                                               ; preds = %33, %32
  br i1 %7, label %39, label %.loopexit

39:                                               ; preds = %38
  %40 = uitofp i16 %5 to double
  %41 = fdiv double 1.000000e+00, %40
  %.not40 = icmp eq i16 %5, 0
  br i1 %.not40, label %.loopexit, label %.lr.ph38.preheader

.lr.ph38.preheader:                               ; preds = %39
  %42 = zext i16 %5 to i64
  %min.iters.check = icmp eq i16 %5, 1
  br i1 %min.iters.check, label %.lr.ph38.preheader45, label %vector.ph

vector.ph:                                        ; preds = %.lr.ph38.preheader
  %n.vec = and i64 %42, 65534
  %43 = shl nuw nsw i64 %n.vec, 4
  %ind.end = getelementptr i8, ptr %1, i64 %43
  %ind.end42 = trunc nuw nsw i64 %n.vec to i32
  %broadcast.splatinsert = insertelement <2 x double> poison, double %41, i64 0
  %broadcast.splat = shufflevector <2 x double> %broadcast.splatinsert, <2 x double> poison, <2 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %offset.idx = shl i64 %index, 4
  %next.gep = getelementptr i8, ptr %1, i64 %offset.idx
  %wide.vec = load <4 x double>, ptr %next.gep, align 8, !tbaa !11
  %strided.vec = shufflevector <4 x double> %wide.vec, <4 x double> poison, <2 x i32> <i32 0, i32 2>
  %strided.vec44 = shufflevector <4 x double> %wide.vec, <4 x double> poison, <2 x i32> <i32 1, i32 3>
  %44 = fmul <2 x double> %broadcast.splat, %strided.vec
  %45 = fneg <2 x double> %strided.vec44
  %46 = fmul <2 x double> %broadcast.splat, %45
  %interleaved.vec = shufflevector <2 x double> %44, <2 x double> %46, <4 x i32> <i32 0, i32 2, i32 1, i32 3>
  store <4 x double> %interleaved.vec, ptr %next.gep, align 8, !tbaa !11
  %index.next = add nuw i64 %index, 2
  %47 = icmp eq i64 %index.next, %n.vec
  br i1 %47, label %middle.block, label %vector.body, !llvm.loop !20

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %42
  br i1 %cmp.n, label %.loopexit, label %.lr.ph38.preheader45

.lr.ph38.preheader45:                             ; preds = %middle.block, %.lr.ph38.preheader
  %.137.ph = phi ptr [ %1, %.lr.ph38.preheader ], [ %ind.end, %middle.block ]
  %.13236.ph = phi i32 [ 0, %.lr.ph38.preheader ], [ %ind.end42, %middle.block ]
  %48 = insertelement <2 x double> poison, double %41, i64 0
  %49 = shufflevector <2 x double> %48, <2 x double> poison, <2 x i32> zeroinitializer
  br label %.lr.ph38

.lr.ph38:                                         ; preds = %.lr.ph38.preheader45, %.lr.ph38
  %.137 = phi ptr [ %57, %.lr.ph38 ], [ %.137.ph, %.lr.ph38.preheader45 ]
  %.13236 = phi i32 [ %58, %.lr.ph38 ], [ %.13236.ph, %.lr.ph38.preheader45 ]
  %50 = getelementptr inbounds i8, ptr %.137, i64 8
  %51 = load double, ptr %.137, align 8, !tbaa !11
  %52 = load double, ptr %50, align 8, !tbaa !11
  %53 = fneg double %52
  %54 = insertelement <2 x double> poison, double %51, i64 0
  %55 = insertelement <2 x double> %54, double %53, i64 1
  %56 = fmul <2 x double> %49, %55
  store <2 x double> %56, ptr %.137, align 8, !tbaa !11
  %57 = getelementptr inbounds i8, ptr %.137, i64 16
  %58 = add nuw nsw i32 %.13236, 1
  %exitcond41.not = icmp eq i32 %58, %6
  br i1 %exitcond41.not, label %.loopexit, label %.lr.ph38, !llvm.loop !23

.loopexit:                                        ; preds = %.lr.ph38, %middle.block, %39, %38
  ret void
}

declare void @arm_bitreversal_64(ptr noundef, i16 noundef zeroext, ptr noundef) local_unnamed_addr #1

attributes #0 = { nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !7, i64 0}
!6 = !{!"", !7, i64 0, !10, i64 8, !10, i64 16, !7, i64 24}
!7 = !{!"short", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !8, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.unroll.disable"}
!17 = !{!6, !10, i64 8}
!18 = !{!6, !7, i64 24}
!19 = !{!6, !10, i64 16}
!20 = distinct !{!20, !14, !21, !22}
!21 = !{!"llvm.loop.isvectorized", i32 1}
!22 = !{!"llvm.loop.unroll.runtime.disable"}
!23 = distinct !{!23, !14, !22, !21}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,ReassociatePass,SLPVectorizerPass,SROAPass,SimplifyCFGPass,TailCallElimPass