; LLVM IR from Samson-Mano/EM_Propogation_simulation :: EM_Propogation_simulation/src/ImGui (stb_implement)

; 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.stbi__zbuf = type { ptr, ptr, i32, i32, ptr, ptr, ptr, i32, %struct.stbi__zhuffman, %struct.stbi__zhuffman }
%struct.stbi__zhuffman = type { [512 x i16], [16 x i16], [17 x i32], [16 x i16], [288 x i8], [288 x i16] }

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

; Function Attrs: mustprogress nounwind uwtable
declare hidden noundef ptr @_ZL12stbi__mallocm(i64 noundef) #2

; Function Attrs: mustprogress uwtable
declare hidden noundef i32 @_ZL13stbi__do_zlibP10stbi__zbufPciii(ptr noundef, ptr noundef, i32 noundef, i32 noundef, i32 noundef) #3

; Function Attrs: mustprogress uwtable
define dso_local ptr @stbi_zlib_decode_malloc_guesssize_headerflag(ptr noundef %0, i32 noundef %1, i32 noundef %2, ptr noundef %3, i32 noundef %4) #3 {
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca ptr, align 8
  %11 = alloca i32, align 4
  %12 = alloca %struct.stbi__zbuf, align 8
  %13 = alloca ptr, align 8
  %14 = alloca i32, align 4
  store ptr %0, ptr %7, align 8, !tbaa !5
  store i32 %1, ptr %8, align 4, !tbaa !9
  store i32 %2, ptr %9, align 4, !tbaa !9
  store ptr %3, ptr %10, align 8, !tbaa !5
  store i32 %4, ptr %11, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4096, ptr %12) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #4
  %15 = load i32, ptr %9, align 4, !tbaa !9
  %16 = sext i32 %15 to i64
  %17 = call noundef ptr @_ZL12stbi__mallocm(i64 noundef %16)
  store ptr %17, ptr %13, align 8, !tbaa !5
  %18 = load ptr, ptr %13, align 8, !tbaa !5
  %19 = icmp eq ptr %18, null
  br i1 %19, label %20, label %21

20:                                               ; preds = %5
  store ptr null, ptr %6, align 8
  store i32 1, ptr %14, align 4
  br label %53

21:                                               ; preds = %5
  %22 = load ptr, ptr %7, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.stbi__zbuf, ptr %12, i32 0, i32 0
  store ptr %22, ptr %23, align 8, !tbaa !11
  %24 = load ptr, ptr %7, align 8, !tbaa !5
  %25 = load i32, ptr %8, align 4, !tbaa !9
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds i8, ptr %24, i64 %26
  %28 = getelementptr inbounds %struct.stbi__zbuf, ptr %12, i32 0, i32 1
  store ptr %27, ptr %28, align 8, !tbaa !14
  %29 = load ptr, ptr %13, align 8, !tbaa !5
  %30 = load i32, ptr %9, align 4, !tbaa !9
  %31 = load i32, ptr %11, align 4, !tbaa !9
  %32 = call noundef i32 @_ZL13stbi__do_zlibP10stbi__zbufPciii(ptr noundef %12, ptr noundef %29, i32 noundef %30, i32 noundef 1, i32 noundef %31)
  %33 = icmp ne i32 %32, 0
  br i1 %33, label %34, label %50

34:                                               ; preds = %21
  %35 = load ptr, ptr %10, align 8, !tbaa !5
  %36 = icmp ne ptr %35, null
  br i1 %36, label %37, label %47

37:                                               ; preds = %34
  %38 = getelementptr inbounds %struct.stbi__zbuf, ptr %12, i32 0, i32 4
  %39 = load ptr, ptr %38, align 8, !tbaa !15
  %40 = getelementptr inbounds %struct.stbi__zbuf, ptr %12, i32 0, i32 5
  %41 = load ptr, ptr %40, align 8, !tbaa !16
  %42 = ptrtoint ptr %39 to i64
  %43 = ptrtoint ptr %41 to i64
  %44 = sub i64 %42, %43
  %45 = trunc i64 %44 to i32
  %46 = load ptr, ptr %10, align 8, !tbaa !5
  store i32 %45, ptr %46, align 4, !tbaa !9
  br label %47

47:                                               ; preds = %37, %34
  %48 = getelementptr inbounds %struct.stbi__zbuf, ptr %12, i32 0, i32 5
  %49 = load ptr, ptr %48, align 8, !tbaa !16
  store ptr %49, ptr %6, align 8
  store i32 1, ptr %14, align 4
  br label %53

50:                                               ; preds = %21
  %51 = getelementptr inbounds %struct.stbi__zbuf, ptr %12, i32 0, i32 5
  %52 = load ptr, ptr %51, align 8, !tbaa !16
  call void @free(ptr noundef %52) #4
  store ptr null, ptr %6, align 8
  store i32 1, ptr %14, align 4
  br label %53

53:                                               ; preds = %50, %47, %20
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #4
  call void @llvm.lifetime.end.p0(i64 4096, ptr %12) #4
  %54 = load ptr, ptr %6, align 8
  ret ptr %54
}

attributes #0 = { nounwind "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 = { mustprogress 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 #3 = { mustprogress 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 #4 = { 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 0}
!12 = !{!"_ZTS10stbi__zbuf", !6, i64 0, !6, i64 8, !10, i64 16, !10, i64 20, !6, i64 24, !6, i64 32, !6, i64 40, !10, i64 48, !13, i64 52, !13, i64 2072}
!13 = !{!"_ZTS14stbi__zhuffman", !7, i64 0, !7, i64 1024, !7, i64 1056, !7, i64 1124, !7, i64 1156, !7, i64 1444}
!14 = !{!12, !6, i64 8}
!15 = !{!12, !6, i64 24}
!16 = !{!12, !6, i64 32}


; 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"

%struct.stbi__zbuf = type { ptr, ptr, i32, i32, ptr, ptr, ptr, i32, %struct.stbi__zhuffman, %struct.stbi__zhuffman }
%struct.stbi__zhuffman = type { [512 x i16], [16 x i16], [17 x i32], [16 x i16], [288 x i8], [288 x i16] }

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

; Function Attrs: mustprogress nounwind uwtable
declare hidden noundef ptr @_ZL12stbi__mallocm(i64 noundef) local_unnamed_addr #2

; Function Attrs: mustprogress uwtable
declare hidden noundef i32 @_ZL13stbi__do_zlibP10stbi__zbufPciii(ptr noundef, ptr noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #3

; Function Attrs: mustprogress uwtable
define dso_local ptr @stbi_zlib_decode_malloc_guesssize_headerflag(ptr noundef %0, i32 noundef %1, i32 noundef %2, ptr noundef writeonly %3, i32 noundef %4) local_unnamed_addr #3 {
  %6 = alloca %struct.stbi__zbuf, align 8
  call void @llvm.lifetime.start.p0(i64 4096, ptr nonnull %6) #4
  %7 = sext i32 %2 to i64
  %8 = tail call noundef ptr @_ZL12stbi__mallocm(i64 noundef %7)
  %9 = icmp eq ptr %8, null
  br i1 %9, label %28, label %10

10:                                               ; preds = %5
  store ptr %0, ptr %6, align 8, !tbaa !5
  %11 = sext i32 %1 to i64
  %12 = getelementptr inbounds i8, ptr %0, i64 %11
  %13 = getelementptr inbounds i8, ptr %6, i64 8
  store ptr %12, ptr %13, align 8, !tbaa !12
  %14 = call noundef i32 @_ZL13stbi__do_zlibP10stbi__zbufPciii(ptr noundef nonnull %6, ptr noundef nonnull %8, i32 noundef %2, i32 noundef 1, i32 noundef %4)
  %.not = icmp eq i32 %14, 0
  br i1 %.not, label %25, label %15

15:                                               ; preds = %10
  %.not12 = icmp eq ptr %3, null
  br i1 %.not12, label %._crit_edge, label %16

._crit_edge:                                      ; preds = %15
  %.phi.trans.insert = getelementptr inbounds i8, ptr %6, i64 32
  %.pre = load ptr, ptr %.phi.trans.insert, align 8, !tbaa !13
  br label %28

16:                                               ; preds = %15
  %17 = getelementptr inbounds i8, ptr %6, i64 24
  %18 = load ptr, ptr %17, align 8, !tbaa !14
  %19 = getelementptr inbounds i8, ptr %6, i64 32
  %20 = load ptr, ptr %19, align 8, !tbaa !13
  %21 = ptrtoint ptr %18 to i64
  %22 = ptrtoint ptr %20 to i64
  %23 = sub i64 %21, %22
  %24 = trunc i64 %23 to i32
  store i32 %24, ptr %3, align 4, !tbaa !15
  br label %28

25:                                               ; preds = %10
  %26 = getelementptr inbounds i8, ptr %6, i64 32
  %27 = load ptr, ptr %26, align 8, !tbaa !13
  call void @free(ptr noundef %27) #4
  br label %28

28:                                               ; preds = %16, %._crit_edge, %5, %25
  %.0 = phi ptr [ null, %25 ], [ null, %5 ], [ %.pre, %._crit_edge ], [ %20, %16 ]
  call void @llvm.lifetime.end.p0(i64 4096, ptr nonnull %6) #4
  ret ptr %.0
}

attributes #0 = { mustprogress nounwind willreturn allockind("free") 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 #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress 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 #3 = { mustprogress 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 #4 = { 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 = !{!"_ZTS10stbi__zbuf", !7, i64 0, !7, i64 8, !10, i64 16, !10, i64 20, !7, i64 24, !7, i64 32, !7, i64 40, !10, i64 48, !11, i64 52, !11, i64 2072}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"_ZTS14stbi__zhuffman", !8, i64 0, !8, i64 1024, !8, i64 1056, !8, i64 1124, !8, i64 1156, !8, i64 1444}
!12 = !{!6, !7, i64 8}
!13 = !{!6, !7, i64 32}
!14 = !{!6, !7, i64 24}
!15 = !{!10, !10, i64 0}


; Effective O3 passes: BDCEPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass