; LLVM IR from rdguez-mariano/fast_imas_IPOL :: io_png (io_png)

; 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"

; Function Attrs: nounwind uwtable
declare hidden ptr @read_png_raw(ptr noundef, ptr noundef, ptr noundef, ptr noundef, i32 noundef, i32 noundef) #0

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

; Function Attrs: nounwind allocsize(1)
declare ptr @realloc(ptr noundef, i64 noundef) #2

; 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
define dso_local ptr @read_png_f32_gray(ptr noundef %0, ptr noundef %1, ptr noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i64, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca ptr, align 8
  %12 = alloca ptr, align 8
  %13 = alloca ptr, align 8
  %14 = alloca ptr, align 8
  %15 = alloca ptr, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store ptr %2, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #4
  %16 = load ptr, ptr %5, align 8, !tbaa !5
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  %18 = load ptr, ptr %7, align 8, !tbaa !5
  %19 = call ptr @read_png_raw(ptr noundef %16, ptr noundef %17, ptr noundef %18, ptr noundef %8, i32 noundef 2, i32 noundef 2)
  store ptr %19, ptr %9, align 8, !tbaa !5
  %20 = load ptr, ptr %9, align 8, !tbaa !5
  %21 = icmp eq ptr null, %20
  br i1 %21, label %22, label %23

22:                                               ; preds = %3
  store ptr null, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %83

23:                                               ; preds = %3
  %24 = load i64, ptr %8, align 8, !tbaa !9
  %25 = icmp eq i64 1, %24
  br i1 %25, label %26, label %28

26:                                               ; preds = %23
  %27 = load ptr, ptr %9, align 8, !tbaa !5
  store ptr %27, ptr %4, align 8
  store i32 1, ptr %10, align 4
  br label %83

28:                                               ; preds = %23
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %14) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %15) #4
  %29 = load ptr, ptr %9, align 8, !tbaa !5
  store ptr %29, ptr %11, align 8, !tbaa !5
  %30 = load ptr, ptr %9, align 8, !tbaa !5
  %31 = load ptr, ptr %6, align 8, !tbaa !5
  %32 = load i64, ptr %31, align 8, !tbaa !9
  %33 = load ptr, ptr %7, align 8, !tbaa !5
  %34 = load i64, ptr %33, align 8, !tbaa !9
  %35 = mul i64 %32, %34
  %36 = getelementptr inbounds float, ptr %30, i64 %35
  store ptr %36, ptr %12, align 8, !tbaa !5
  %37 = load ptr, ptr %9, align 8, !tbaa !5
  %38 = load ptr, ptr %6, align 8, !tbaa !5
  %39 = load i64, ptr %38, align 8, !tbaa !9
  %40 = mul i64 2, %39
  %41 = load ptr, ptr %7, align 8, !tbaa !5
  %42 = load i64, ptr %41, align 8, !tbaa !9
  %43 = mul i64 %40, %42
  %44 = getelementptr inbounds float, ptr %37, i64 %43
  store ptr %44, ptr %13, align 8, !tbaa !5
  %45 = load ptr, ptr %9, align 8, !tbaa !5
  store ptr %45, ptr %14, align 8, !tbaa !5
  %46 = load ptr, ptr %14, align 8, !tbaa !5
  %47 = load ptr, ptr %6, align 8, !tbaa !5
  %48 = load i64, ptr %47, align 8, !tbaa !9
  %49 = load ptr, ptr %7, align 8, !tbaa !5
  %50 = load i64, ptr %49, align 8, !tbaa !9
  %51 = mul i64 %48, %50
  %52 = getelementptr inbounds float, ptr %46, i64 %51
  store ptr %52, ptr %15, align 8, !tbaa !5
  br label %53

53:                                               ; preds = %57, %28
  %54 = load ptr, ptr %14, align 8, !tbaa !5
  %55 = load ptr, ptr %15, align 8, !tbaa !5
  %56 = icmp ult ptr %54, %55
  br i1 %56, label %57, label %73

57:                                               ; preds = %53
  %58 = load ptr, ptr %11, align 8, !tbaa !5
  %59 = getelementptr inbounds float, ptr %58, i32 1
  store ptr %59, ptr %11, align 8, !tbaa !5
  %60 = load float, ptr %58, align 4, !tbaa !11
  %61 = load ptr, ptr %12, align 8, !tbaa !5
  %62 = getelementptr inbounds float, ptr %61, i32 1
  store ptr %62, ptr %12, align 8, !tbaa !5
  %63 = load float, ptr %61, align 4, !tbaa !11
  %64 = fmul float 2.343400e+04, %63
  %65 = call float @llvm.fmuladd.f32(float 6.969000e+03, float %60, float %64)
  %66 = load ptr, ptr %13, align 8, !tbaa !5
  %67 = getelementptr inbounds float, ptr %66, i32 1
  store ptr %67, ptr %13, align 8, !tbaa !5
  %68 = load float, ptr %66, align 4, !tbaa !11
  %69 = call float @llvm.fmuladd.f32(float 2.365000e+03, float %68, float %65)
  %70 = fdiv float %69, 3.276800e+04
  %71 = load ptr, ptr %14, align 8, !tbaa !5
  %72 = getelementptr inbounds float, ptr %71, i32 1
  store ptr %72, ptr %14, align 8, !tbaa !5
  store float %70, ptr %71, align 4, !tbaa !11
  br label %53, !llvm.loop !13

73:                                               ; preds = %53
  %74 = load ptr, ptr %9, align 8, !tbaa !5
  %75 = load ptr, ptr %6, align 8, !tbaa !5
  %76 = load i64, ptr %75, align 8, !tbaa !9
  %77 = load ptr, ptr %7, align 8, !tbaa !5
  %78 = load i64, ptr %77, align 8, !tbaa !9
  %79 = mul i64 %76, %78
  %80 = mul i64 %79, 4
  %81 = call ptr @realloc(ptr noundef %74, i64 noundef %80) #5
  store ptr %81, ptr %9, align 8, !tbaa !5
  %82 = load ptr, ptr %9, align 8, !tbaa !5
  store ptr %82, ptr %4, align 8
  store i32 1, ptr %10, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %15) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %14) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #4
  br label %83

83:                                               ; preds = %73, %26, %22
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  %84 = load ptr, ptr %4, align 8
  ret ptr %84
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #3

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 = { nounwind allocsize(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 #3 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { nounwind }
attributes #5 = { nounwind allocsize(1) }

!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 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"float", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


; 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 hidden ptr @read_png_raw(ptr noundef, ptr noundef, ptr noundef, ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #0

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

; Function Attrs: mustprogress nounwind willreturn allockind("realloc") allocsize(1) memory(argmem: readwrite, inaccessiblemem: readwrite)
declare noalias noundef ptr @realloc(ptr allocptr nocapture noundef, i64 noundef) local_unnamed_addr #2

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

; Function Attrs: nounwind uwtable
define dso_local ptr @read_png_f32_gray(ptr noundef %0, ptr noundef %1, ptr noundef %2) local_unnamed_addr #0 {
  %4 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #5
  %5 = call ptr @read_png_raw(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef nonnull %4, i32 noundef 2, i32 noundef 2)
  %6 = ptrtoint ptr %5 to i64
  %7 = icmp eq ptr %5, null
  br i1 %7, label %70, label %8

8:                                                ; preds = %3
  %9 = load i64, ptr %4, align 8, !tbaa !5
  %10 = icmp eq i64 %9, 1
  br i1 %10, label %70, label %11

11:                                               ; preds = %8
  %12 = load i64, ptr %1, align 8, !tbaa !5
  %13 = load i64, ptr %2, align 8, !tbaa !5
  %14 = mul i64 %13, %12
  %15 = getelementptr float, ptr %5, i64 %14
  %16 = icmp sgt i64 %14, 0
  br i1 %16, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %11
  %17 = shl i64 %12, 1
  %18 = mul i64 %17, %13
  %19 = getelementptr float, ptr %5, i64 %18
  %20 = mul i64 %13, %12
  %21 = shl i64 %20, 2
  %22 = add i64 %21, %6
  %23 = add i64 %6, 4
  %umax41 = call i64 @llvm.umax.i64(i64 %22, i64 %23)
  %24 = xor i64 %6, -1
  %25 = add i64 %umax41, %24
  %26 = lshr i64 %25, 2
  %27 = add nuw nsw i64 %26, 1
  %min.iters.check = icmp ult i64 %25, 60
  br i1 %min.iters.check, label %.lr.ph.preheader58, label %vector.memcheck

vector.memcheck:                                  ; preds = %.lr.ph.preheader
  %28 = mul i64 %13, %12
  %29 = shl i64 %28, 2
  %30 = add i64 %29, %6
  %31 = add i64 %6, 4
  %umax = call i64 @llvm.umax.i64(i64 %30, i64 %31)
  %32 = xor i64 %6, -1
  %33 = add i64 %umax, %32
  %34 = and i64 %33, -4
  %35 = getelementptr i8, ptr %5, i64 %34
  %scevgep = getelementptr i8, ptr %35, i64 4
  %36 = getelementptr i8, ptr %5, i64 %29
  %37 = getelementptr i8, ptr %36, i64 %34
  %scevgep36 = getelementptr i8, ptr %37, i64 4
  %38 = mul i64 %13, %12
  %39 = shl i64 %38, 3
  %40 = getelementptr i8, ptr %5, i64 %39
  %41 = getelementptr i8, ptr %40, i64 %34
  %scevgep37 = getelementptr i8, ptr %41, i64 4
  %bound0 = icmp ult ptr %5, %scevgep36
  %bound1 = icmp ult ptr %15, %scevgep
  %found.conflict = and i1 %bound0, %bound1
  %bound038 = icmp ult ptr %5, %scevgep37
  %bound139 = icmp ult ptr %19, %scevgep
  %found.conflict40 = and i1 %bound038, %bound139
  %conflict.rdx = or i1 %found.conflict, %found.conflict40
  br i1 %conflict.rdx, label %.lr.ph.preheader58, label %vector.ph

vector.ph:                                        ; preds = %vector.memcheck
  %n.vec = and i64 %27, 9223372036854775800
  %42 = shl i64 %n.vec, 2
  %ind.end = getelementptr i8, ptr %5, i64 %42
  %43 = shl i64 %n.vec, 2
  %ind.end42 = getelementptr i8, ptr %19, i64 %43
  %44 = shl i64 %n.vec, 2
  %ind.end44 = getelementptr i8, ptr %15, i64 %44
  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, 2
  %next.gep = getelementptr i8, ptr %5, i64 %offset.idx
  %offset.idx47 = shl i64 %index, 2
  %next.gep48 = getelementptr i8, ptr %19, i64 %offset.idx47
  %offset.idx50 = shl i64 %index, 2
  %next.gep51 = getelementptr i8, ptr %15, i64 %offset.idx50
  %45 = getelementptr i8, ptr %next.gep, i64 16
  %wide.load = load <4 x float>, ptr %next.gep, align 4, !tbaa !9, !alias.scope !11, !noalias !14
  %wide.load53 = load <4 x float>, ptr %45, align 4, !tbaa !9, !alias.scope !11, !noalias !14
  %46 = getelementptr i8, ptr %next.gep51, i64 16
  %wide.load54 = load <4 x float>, ptr %next.gep51, align 4, !tbaa !9, !alias.scope !17
  %wide.load55 = load <4 x float>, ptr %46, align 4, !tbaa !9, !alias.scope !17
  %47 = fmul <4 x float> %wide.load54, <float 2.343400e+04, float 2.343400e+04, float 2.343400e+04, float 2.343400e+04>
  %48 = fmul <4 x float> %wide.load55, <float 2.343400e+04, float 2.343400e+04, float 2.343400e+04, float 2.343400e+04>
  %49 = call <4 x float> @llvm.fmuladd.v4f32(<4 x float> %wide.load, <4 x float> <float 6.969000e+03, float 6.969000e+03, float 6.969000e+03, float 6.969000e+03>, <4 x float> %47)
  %50 = call <4 x float> @llvm.fmuladd.v4f32(<4 x float> %wide.load53, <4 x float> <float 6.969000e+03, float 6.969000e+03, float 6.969000e+03, float 6.969000e+03>, <4 x float> %48)
  %51 = getelementptr i8, ptr %next.gep48, i64 16
  %wide.load56 = load <4 x float>, ptr %next.gep48, align 4, !tbaa !9, !alias.scope !18
  %wide.load57 = load <4 x float>, ptr %51, align 4, !tbaa !9, !alias.scope !18
  %52 = call <4 x float> @llvm.fmuladd.v4f32(<4 x float> %wide.load56, <4 x float> <float 2.365000e+03, float 2.365000e+03, float 2.365000e+03, float 2.365000e+03>, <4 x float> %49)
  %53 = call <4 x float> @llvm.fmuladd.v4f32(<4 x float> %wide.load57, <4 x float> <float 2.365000e+03, float 2.365000e+03, float 2.365000e+03, float 2.365000e+03>, <4 x float> %50)
  %54 = fmul <4 x float> %52, <float 0x3F00000000000000, float 0x3F00000000000000, float 0x3F00000000000000, float 0x3F00000000000000>
  %55 = fmul <4 x float> %53, <float 0x3F00000000000000, float 0x3F00000000000000, float 0x3F00000000000000, float 0x3F00000000000000>
  store <4 x float> %54, ptr %next.gep, align 4, !tbaa !9, !alias.scope !11, !noalias !14
  store <4 x float> %55, ptr %45, align 4, !tbaa !9, !alias.scope !11, !noalias !14
  %index.next = add nuw i64 %index, 8
  %56 = icmp eq i64 %index.next, %n.vec
  br i1 %56, label %middle.block, label %vector.body, !llvm.loop !19

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %27, %n.vec
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader58

.lr.ph.preheader58:                               ; preds = %middle.block, %vector.memcheck, %.lr.ph.preheader
  %.02735.ph = phi ptr [ %5, %vector.memcheck ], [ %5, %.lr.ph.preheader ], [ %ind.end, %middle.block ]
  %.02834.ph = phi ptr [ %19, %vector.memcheck ], [ %19, %.lr.ph.preheader ], [ %ind.end42, %middle.block ]
  %.02933.ph = phi ptr [ %15, %vector.memcheck ], [ %15, %.lr.ph.preheader ], [ %ind.end44, %middle.block ]
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader58, %.lr.ph
  %.02735 = phi ptr [ %57, %.lr.ph ], [ %.02735.ph, %.lr.ph.preheader58 ]
  %.02834 = phi ptr [ %63, %.lr.ph ], [ %.02834.ph, %.lr.ph.preheader58 ]
  %.02933 = phi ptr [ %59, %.lr.ph ], [ %.02933.ph, %.lr.ph.preheader58 ]
  %57 = getelementptr i8, ptr %.02735, i64 4
  %58 = load float, ptr %.02735, align 4, !tbaa !9
  %59 = getelementptr inbounds i8, ptr %.02933, i64 4
  %60 = load float, ptr %.02933, align 4, !tbaa !9
  %61 = fmul float %60, 2.343400e+04
  %62 = call float @llvm.fmuladd.f32(float %58, float 6.969000e+03, float %61)
  %63 = getelementptr inbounds i8, ptr %.02834, i64 4
  %64 = load float, ptr %.02834, align 4, !tbaa !9
  %65 = call float @llvm.fmuladd.f32(float %64, float 2.365000e+03, float %62)
  %66 = fmul float %65, 0x3F00000000000000
  store float %66, ptr %.02735, align 4, !tbaa !9
  %67 = icmp ult ptr %57, %15
  br i1 %67, label %.lr.ph, label %._crit_edge, !llvm.loop !23

._crit_edge:                                      ; preds = %.lr.ph, %middle.block, %11
  %68 = shl i64 %14, 2
  %69 = call ptr @realloc(ptr noundef nonnull %5, i64 noundef %68) #6
  br label %70

70:                                               ; preds = %8, %3, %._crit_edge
  %.0 = phi ptr [ %69, %._crit_edge ], [ null, %3 ], [ %5, %8 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #5
  ret ptr %.0
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #3

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.umax.i64(i64, i64) #4

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare <4 x float> @llvm.fmuladd.v4f32(<4 x float>, <4 x float>, <4 x float>) #4

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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nounwind willreturn allockind("realloc") allocsize(1) memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #5 = { nounwind }
attributes #6 = { nounwind allocsize(1) }

!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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"float", !7, i64 0}
!11 = !{!12}
!12 = distinct !{!12, !13}
!13 = distinct !{!13, !"LVerDomain"}
!14 = !{!15, !16}
!15 = distinct !{!15, !13}
!16 = distinct !{!16, !13}
!17 = !{!15}
!18 = !{!16}
!19 = distinct !{!19, !20, !21, !22}
!20 = !{!"llvm.loop.mustprogress"}
!21 = !{!"llvm.loop.isvectorized", i32 1}
!22 = !{!"llvm.loop.unroll.runtime.disable"}
!23 = distinct !{!23, !20, !21}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,ReassociatePass,SROAPass,SimplifyCFGPass