; LLVM IR from EyalAr/lwip :: src/lib/png (pngrutil)

; 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.png_text_struct = type { i32, ptr, ptr, i64, i64, ptr, ptr }
%struct.png_struct_def = type { [1 x %struct.__jmp_buf_tag], ptr, ptr, i64, ptr, ptr, ptr, ptr, ptr, ptr, ptr, i8, i8, i32, i32, i32, i32, %struct.z_stream_s, i32, i32, i32, i32, i64, i32, i32, i32, ptr, ptr, i64, i32, i32, ptr, i16, i32, i16, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i8, i16, i8, i32, %struct.png_color_16_struct, %struct.png_color_16_struct, i32, i32, ptr, ptr, ptr, ptr, ptr, ptr, %struct.png_color_8_struct, %struct.png_color_8_struct, ptr, %struct.png_color_16_struct, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, ptr, i32, i32, i64, i64, i64, i64, i32, i32, ptr, ptr, i8, [29 x i8], i32, ptr, ptr, i32, i32, ptr, i8, i8, i16, i16, i32, i8, ptr, ptr, ptr, ptr, ptr, ptr, ptr, i8, i32, i32, i32, i64, %struct.png_unknown_chunk_t, i64, ptr, i64, i32, i32, ptr, [4 x ptr], %struct.png_colorspace }
%struct.__jmp_buf_tag = type { [8 x i64], i32, %struct.__sigset_t }
%struct.__sigset_t = type { [16 x i64] }
%struct.z_stream_s = type { ptr, i32, i64, ptr, i32, i64, ptr, ptr, ptr, ptr, ptr, i32, i64, i64 }
%struct.png_color_8_struct = type { i8, i8, i8, i8, i8 }
%struct.png_color_16_struct = type { i8, i16, i16, i16, i16 }
%struct.png_unknown_chunk_t = type { [5 x i8], ptr, i64, i8 }
%struct.png_colorspace = type { i32, %struct.png_xy, %struct.png_XYZ, i16, i16 }
%struct.png_xy = type { i32, i32, i32, i32, i32, i32, i32, i32 }
%struct.png_XYZ = type { i32, i32, i32, i32, i32, i32, i32, i32, i32 }

@.str.6 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.16 = external hidden unnamed_addr constant [14 x i8], align 1
@.str.17 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.19 = external hidden unnamed_addr constant [12 x i8], align 1
@.str.30 = external hidden unnamed_addr constant [24 x i8], align 1
@.str.31 = external hidden unnamed_addr constant [25 x i8], align 1
@.str.32 = external hidden unnamed_addr constant [20 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local void @png_crc_read(ptr noalias noundef, ptr noundef, i32 noundef) #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @png_crc_finish(ptr noalias noundef, i32 noundef) #1

; Function Attrs: noreturn
declare void @png_chunk_error(ptr noundef, ptr noundef) #2

declare void @png_chunk_benign_error(ptr noundef, ptr noundef) #3

; Function Attrs: nounwind uwtable
declare hidden ptr @png_read_buffer(ptr noalias noundef, i64 noundef, i32 noundef) #1

declare i32 @png_set_text_2(ptr noundef, ptr noundef, ptr noundef, i32 noundef) #3

; Function Attrs: nounwind uwtable
define dso_local void @png_handle_zTXt(ptr noalias noundef %0, ptr noalias noundef %1, i32 noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  %11 = alloca i64, align 8
  %12 = alloca %struct.png_text_struct, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #4
  store ptr null, ptr %7, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.png_struct_def, ptr %13, i32 0, i32 108
  %15 = load i32, ptr %14, align 4, !tbaa !11
  %16 = icmp ne i32 %15, 0
  br i1 %16, label %17, label %38

17:                                               ; preds = %3
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.png_struct_def, ptr %18, i32 0, i32 108
  %20 = load i32, ptr %19, align 4, !tbaa !11
  %21 = icmp eq i32 %20, 1
  br i1 %21, label %22, label %26

22:                                               ; preds = %17
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = load i32, ptr %6, align 4, !tbaa !9
  %25 = call i32 @png_crc_finish(ptr noundef %23, i32 noundef %24)
  store i32 1, ptr %10, align 4
  br label %172

26:                                               ; preds = %17
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.png_struct_def, ptr %27, i32 0, i32 108
  %29 = load i32, ptr %28, align 4, !tbaa !11
  %30 = add i32 %29, -1
  store i32 %30, ptr %28, align 4, !tbaa !11
  %31 = icmp eq i32 %30, 1
  br i1 %31, label %32, label %37

32:                                               ; preds = %26
  %33 = load ptr, ptr %4, align 8, !tbaa !5
  %34 = load i32, ptr %6, align 4, !tbaa !9
  %35 = call i32 @png_crc_finish(ptr noundef %33, i32 noundef %34)
  %36 = load ptr, ptr %4, align 8, !tbaa !5
  call void @png_chunk_benign_error(ptr noundef %36, ptr noundef @.str.30)
  store i32 1, ptr %10, align 4
  br label %172

37:                                               ; preds = %26
  br label %38

38:                                               ; preds = %37, %3
  %39 = load ptr, ptr %4, align 8, !tbaa !5
  %40 = getelementptr inbounds %struct.png_struct_def, ptr %39, i32 0, i32 13
  %41 = load i32, ptr %40, align 4, !tbaa !22
  %42 = and i32 %41, 1
  %43 = icmp eq i32 %42, 0
  br i1 %43, label %44, label %46

44:                                               ; preds = %38
  %45 = load ptr, ptr %4, align 8, !tbaa !5
  call void @png_chunk_error(ptr noundef %45, ptr noundef @.str.6) #5
  unreachable

46:                                               ; preds = %38
  %47 = load ptr, ptr %4, align 8, !tbaa !5
  %48 = getelementptr inbounds %struct.png_struct_def, ptr %47, i32 0, i32 13
  %49 = load i32, ptr %48, align 4, !tbaa !22
  %50 = and i32 %49, 4
  %51 = icmp ne i32 %50, 0
  br i1 %51, label %52, label %57

52:                                               ; preds = %46
  %53 = load ptr, ptr %4, align 8, !tbaa !5
  %54 = getelementptr inbounds %struct.png_struct_def, ptr %53, i32 0, i32 13
  %55 = load i32, ptr %54, align 4, !tbaa !22
  %56 = or i32 %55, 8
  store i32 %56, ptr %54, align 4, !tbaa !22
  br label %57

57:                                               ; preds = %52, %46
  %58 = load ptr, ptr %4, align 8, !tbaa !5
  %59 = load i32, ptr %6, align 4, !tbaa !9
  %60 = zext i32 %59 to i64
  %61 = call ptr @png_read_buffer(ptr noundef %58, i64 noundef %60, i32 noundef 2)
  store ptr %61, ptr %8, align 8, !tbaa !5
  %62 = load ptr, ptr %8, align 8, !tbaa !5
  %63 = icmp eq ptr %62, null
  br i1 %63, label %64, label %69

64:                                               ; preds = %57
  %65 = load ptr, ptr %4, align 8, !tbaa !5
  %66 = load i32, ptr %6, align 4, !tbaa !9
  %67 = call i32 @png_crc_finish(ptr noundef %65, i32 noundef %66)
  %68 = load ptr, ptr %4, align 8, !tbaa !5
  call void @png_chunk_benign_error(ptr noundef %68, ptr noundef @.str.16)
  store i32 1, ptr %10, align 4
  br label %172

69:                                               ; preds = %57
  %70 = load ptr, ptr %4, align 8, !tbaa !5
  %71 = load ptr, ptr %8, align 8, !tbaa !5
  %72 = load i32, ptr %6, align 4, !tbaa !9
  call void @png_crc_read(ptr noundef %70, ptr noundef %71, i32 noundef %72)
  %73 = load ptr, ptr %4, align 8, !tbaa !5
  %74 = call i32 @png_crc_finish(ptr noundef %73, i32 noundef 0)
  %75 = icmp ne i32 %74, 0
  br i1 %75, label %76, label %77

76:                                               ; preds = %69
  store i32 1, ptr %10, align 4
  br label %172

77:                                               ; preds = %69
  store i32 0, ptr %9, align 4, !tbaa !9
  br label %78

78:                                               ; preds = %93, %77
  %79 = load i32, ptr %9, align 4, !tbaa !9
  %80 = load i32, ptr %6, align 4, !tbaa !9
  %81 = icmp ult i32 %79, %80
  br i1 %81, label %82, label %90

82:                                               ; preds = %78
  %83 = load ptr, ptr %8, align 8, !tbaa !5
  %84 = load i32, ptr %9, align 4, !tbaa !9
  %85 = zext i32 %84 to i64
  %86 = getelementptr inbounds i8, ptr %83, i64 %85
  %87 = load i8, ptr %86, align 1, !tbaa !23
  %88 = zext i8 %87 to i32
  %89 = icmp ne i32 %88, 0
  br label %90

90:                                               ; preds = %82, %78
  %91 = phi i1 [ false, %78 ], [ %89, %82 ]
  br i1 %91, label %92, label %96

92:                                               ; preds = %90
  br label %93

93:                                               ; preds = %92
  %94 = load i32, ptr %9, align 4, !tbaa !9
  %95 = add i32 %94, 1
  store i32 %95, ptr %9, align 4, !tbaa !9
  br label %78, !llvm.loop !24

96:                                               ; preds = %90
  %97 = load i32, ptr %9, align 4, !tbaa !9
  %98 = icmp ugt i32 %97, 79
  br i1 %98, label %102, label %99

99:                                               ; preds = %96
  %100 = load i32, ptr %9, align 4, !tbaa !9
  %101 = icmp ult i32 %100, 1
  br i1 %101, label %102, label %103

102:                                              ; preds = %99, %96
  store ptr @.str.19, ptr %7, align 8, !tbaa !5
  br label %165

103:                                              ; preds = %99
  %104 = load i32, ptr %9, align 4, !tbaa !9
  %105 = add i32 %104, 3
  %106 = load i32, ptr %6, align 4, !tbaa !9
  %107 = icmp ugt i32 %105, %106
  br i1 %107, label %108, label %109

108:                                              ; preds = %103
  store ptr @.str.17, ptr %7, align 8, !tbaa !5
  br label %164

109:                                              ; preds = %103
  %110 = load ptr, ptr %8, align 8, !tbaa !5
  %111 = load i32, ptr %9, align 4, !tbaa !9
  %112 = add i32 %111, 1
  %113 = zext i32 %112 to i64
  %114 = getelementptr inbounds i8, ptr %110, i64 %113
  %115 = load i8, ptr %114, align 1, !tbaa !23
  %116 = zext i8 %115 to i32
  %117 = icmp ne i32 %116, 0
  br i1 %117, label %118, label %119

118:                                              ; preds = %109
  store ptr @.str.31, ptr %7, align 8, !tbaa !5
  br label %163

119:                                              ; preds = %109
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #4
  store i64 -1, ptr %11, align 8, !tbaa !26
  %120 = load ptr, ptr %4, align 8, !tbaa !5
  %121 = load i32, ptr %6, align 4, !tbaa !9
  %122 = load i32, ptr %9, align 4, !tbaa !9
  %123 = add i32 %122, 2
  %124 = call i32 @png_decompress_chunk(ptr noundef %120, i32 noundef %121, i32 noundef %123, ptr noundef %11, i32 noundef 1)
  %125 = icmp eq i32 %124, 1
  br i1 %125, label %126, label %157

126:                                              ; preds = %119
  call void @llvm.lifetime.start.p0(i64 56, ptr %12) #4
  %127 = load ptr, ptr %4, align 8, !tbaa !5
  %128 = getelementptr inbounds %struct.png_struct_def, ptr %127, i32 0, i32 112
  %129 = load ptr, ptr %128, align 8, !tbaa !27
  store ptr %129, ptr %8, align 8, !tbaa !5
  %130 = load ptr, ptr %8, align 8, !tbaa !5
  %131 = load i64, ptr %11, align 8, !tbaa !26
  %132 = load i32, ptr %9, align 4, !tbaa !9
  %133 = add i32 %132, 2
  %134 = zext i32 %133 to i64
  %135 = add i64 %131, %134
  %136 = getelementptr inbounds i8, ptr %130, i64 %135
  store i8 0, ptr %136, align 1, !tbaa !23
  %137 = getelementptr inbounds %struct.png_text_struct, ptr %12, i32 0, i32 0
  store i32 0, ptr %137, align 8, !tbaa !28
  %138 = load ptr, ptr %8, align 8, !tbaa !5
  %139 = getelementptr inbounds %struct.png_text_struct, ptr %12, i32 0, i32 1
  store ptr %138, ptr %139, align 8, !tbaa !30
  %140 = load ptr, ptr %8, align 8, !tbaa !5
  %141 = load i32, ptr %9, align 4, !tbaa !9
  %142 = zext i32 %141 to i64
  %143 = getelementptr inbounds i8, ptr %140, i64 %142
  %144 = getelementptr inbounds i8, ptr %143, i64 2
  %145 = getelementptr inbounds %struct.png_text_struct, ptr %12, i32 0, i32 2
  store ptr %144, ptr %145, align 8, !tbaa !31
  %146 = load i64, ptr %11, align 8, !tbaa !26
  %147 = getelementptr inbounds %struct.png_text_struct, ptr %12, i32 0, i32 3
  store i64 %146, ptr %147, align 8, !tbaa !32
  %148 = getelementptr inbounds %struct.png_text_struct, ptr %12, i32 0, i32 4
  store i64 0, ptr %148, align 8, !tbaa !33
  %149 = getelementptr inbounds %struct.png_text_struct, ptr %12, i32 0, i32 5
  store ptr null, ptr %149, align 8, !tbaa !34
  %150 = getelementptr inbounds %struct.png_text_struct, ptr %12, i32 0, i32 6
  store ptr null, ptr %150, align 8, !tbaa !35
  %151 = load ptr, ptr %4, align 8, !tbaa !5
  %152 = load ptr, ptr %5, align 8, !tbaa !5
  %153 = call i32 @png_set_text_2(ptr noundef %151, ptr noundef %152, ptr noundef %12, i32 noundef 1)
  %154 = icmp ne i32 %153, 0
  br i1 %154, label %155, label %156

155:                                              ; preds = %126
  store ptr @.str.32, ptr %7, align 8, !tbaa !5
  br label %156

156:                                              ; preds = %155, %126
  call void @llvm.lifetime.end.p0(i64 56, ptr %12) #4
  br label %162

157:                                              ; preds = %119
  %158 = load ptr, ptr %4, align 8, !tbaa !5
  %159 = getelementptr inbounds %struct.png_struct_def, ptr %158, i32 0, i32 17
  %160 = getelementptr inbounds %struct.z_stream_s, ptr %159, i32 0, i32 6
  %161 = load ptr, ptr %160, align 8, !tbaa !36
  store ptr %161, ptr %7, align 8, !tbaa !5
  br label %162

162:                                              ; preds = %157, %156
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #4
  br label %163

163:                                              ; preds = %162, %118
  br label %164

164:                                              ; preds = %163, %108
  br label %165

165:                                              ; preds = %164, %102
  %166 = load ptr, ptr %7, align 8, !tbaa !5
  %167 = icmp ne ptr %166, null
  br i1 %167, label %168, label %171

168:                                              ; preds = %165
  %169 = load ptr, ptr %4, align 8, !tbaa !5
  %170 = load ptr, ptr %7, align 8, !tbaa !5
  call void @png_chunk_benign_error(ptr noundef %169, ptr noundef %170)
  br label %171

171:                                              ; preds = %168, %165
  store i32 0, ptr %10, align 4
  br label %172

172:                                              ; preds = %171, %76, %64, %32, %22
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #4
  %173 = load i32, ptr %10, align 4
  switch i32 %173, label %175 [
    i32 0, label %174
    i32 1, label %174
  ]

174:                                              ; preds = %172, %172
  ret void

175:                                              ; preds = %172
  unreachable
}

; Function Attrs: nounwind uwtable
declare hidden i32 @png_decompress_chunk(ptr noalias noundef, i32 noundef, i32 noundef, ptr noundef, i32 noundef) #1

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { noreturn "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 = { "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 }
attributes #5 = { noreturn }

!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 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 940}
!12 = !{!"png_struct_def", !7, i64 0, !6, i64 200, !6, i64 208, !13, i64 216, !6, i64 224, !6, i64 232, !6, i64 240, !6, i64 248, !6, i64 256, !6, i64 264, !6, i64 272, !7, i64 280, !7, i64 281, !10, i64 284, !10, i64 288, !10, i64 292, !10, i64 296, !14, i64 304, !10, i64 416, !10, i64 420, !10, i64 424, !10, i64 428, !13, i64 432, !10, i64 440, !10, i64 444, !10, i64 448, !6, i64 456, !6, i64 464, !13, i64 472, !10, i64 480, !10, i64 484, !6, i64 488, !15, i64 496, !10, i64 500, !15, i64 504, !7, i64 506, !7, i64 507, !7, i64 508, !7, i64 509, !7, i64 510, !7, i64 511, !7, i64 512, !7, i64 513, !7, i64 514, !7, i64 515, !7, i64 516, !7, i64 517, !7, i64 518, !15, i64 520, !7, i64 522, !10, i64 524, !16, i64 528, !16, i64 538, !10, i64 548, !10, i64 552, !6, i64 560, !6, i64 568, !6, i64 576, !6, i64 584, !6, i64 592, !6, i64 600, !17, i64 608, !17, i64 613, !6, i64 624, !16, i64 632, !6, i64 648, !6, i64 656, !6, i64 664, !6, i64 672, !6, i64 680, !6, i64 688, !6, i64 696, !6, i64 704, !6, i64 712, !10, i64 720, !10, i64 724, !13, i64 728, !13, i64 736, !13, i64 744, !13, i64 752, !10, i64 760, !10, i64 764, !6, i64 768, !6, i64 776, !7, i64 784, !7, i64 785, !10, i64 816, !6, i64 824, !6, i64 832, !10, i64 840, !10, i64 844, !6, i64 848, !7, i64 856, !7, i64 857, !15, i64 858, !15, i64 860, !10, i64 864, !7, i64 868, !6, i64 872, !6, i64 880, !6, i64 888, !6, i64 896, !6, i64 904, !6, i64 912, !6, i64 920, !7, i64 928, !10, i64 932, !10, i64 936, !10, i64 940, !13, i64 944, !18, i64 952, !13, i64 984, !6, i64 992, !13, i64 1000, !10, i64 1008, !10, i64 1012, !6, i64 1016, !7, i64 1024, !19, i64 1056}
!13 = !{!"long", !7, i64 0}
!14 = !{!"z_stream_s", !6, i64 0, !10, i64 8, !13, i64 16, !6, i64 24, !10, i64 32, !13, i64 40, !6, i64 48, !6, i64 56, !6, i64 64, !6, i64 72, !6, i64 80, !10, i64 88, !13, i64 96, !13, i64 104}
!15 = !{!"short", !7, i64 0}
!16 = !{!"png_color_16_struct", !7, i64 0, !15, i64 2, !15, i64 4, !15, i64 6, !15, i64 8}
!17 = !{!"png_color_8_struct", !7, i64 0, !7, i64 1, !7, i64 2, !7, i64 3, !7, i64 4}
!18 = !{!"png_unknown_chunk_t", !7, i64 0, !6, i64 8, !13, i64 16, !7, i64 24}
!19 = !{!"png_colorspace", !10, i64 0, !20, i64 4, !21, i64 36, !15, i64 72, !15, i64 74}
!20 = !{!"png_xy", !10, i64 0, !10, i64 4, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !10, i64 24, !10, i64 28}
!21 = !{!"png_XYZ", !10, i64 0, !10, i64 4, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !10, i64 24, !10, i64 28, !10, i64 32}
!22 = !{!12, !10, i64 284}
!23 = !{!7, !7, i64 0}
!24 = distinct !{!24, !25}
!25 = !{!"llvm.loop.mustprogress"}
!26 = !{!13, !13, i64 0}
!27 = !{!12, !6, i64 992}
!28 = !{!29, !10, i64 0}
!29 = !{!"png_text_struct", !10, i64 0, !6, i64 8, !6, i64 16, !13, i64 24, !13, i64 32, !6, i64 40, !6, i64 48}
!30 = !{!29, !6, i64 8}
!31 = !{!29, !6, i64 16}
!32 = !{!29, !13, i64 24}
!33 = !{!29, !13, i64 32}
!34 = !{!29, !6, i64 40}
!35 = !{!29, !6, i64 48}
!36 = !{!12, !6, i64 352}


; 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.png_text_struct = type { i32, ptr, ptr, i64, i64, ptr, ptr }

@.str.6 = external hidden unnamed_addr constant [13 x i8], align 1
@.str.16 = external hidden unnamed_addr constant [14 x i8], align 1
@.str.17 = external hidden unnamed_addr constant [10 x i8], align 1
@.str.19 = external hidden unnamed_addr constant [12 x i8], align 1
@.str.30 = external hidden unnamed_addr constant [24 x i8], align 1
@.str.31 = external hidden unnamed_addr constant [25 x i8], align 1
@.str.32 = external hidden unnamed_addr constant [20 x i8], align 1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local void @png_crc_read(ptr noalias noundef, ptr noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare dso_local i32 @png_crc_finish(ptr noalias noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: noreturn
declare void @png_chunk_error(ptr noundef, ptr noundef) local_unnamed_addr #2

declare void @png_chunk_benign_error(ptr noundef, ptr noundef) local_unnamed_addr #3

; Function Attrs: nounwind uwtable
declare hidden ptr @png_read_buffer(ptr noalias noundef, i64 noundef, i32 noundef) local_unnamed_addr #1

declare i32 @png_set_text_2(ptr noundef, ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #3

; Function Attrs: nounwind uwtable
define dso_local void @png_handle_zTXt(ptr noalias noundef %0, ptr noalias noundef %1, i32 noundef %2) local_unnamed_addr #1 {
  %4 = alloca i64, align 8
  %5 = alloca %struct.png_text_struct, align 8
  %6 = getelementptr inbounds i8, ptr %0, i64 940
  %7 = load i32, ptr %6, align 4, !tbaa !5
  switch i32 %7, label %10 [
    i32 0, label %15
    i32 1, label %8
  ]

8:                                                ; preds = %3
  %9 = tail call i32 @png_crc_finish(ptr noundef nonnull %0, i32 noundef %2)
  br label %.thread61

10:                                               ; preds = %3
  %11 = add i32 %7, -1
  store i32 %11, ptr %6, align 4, !tbaa !5
  %12 = icmp eq i32 %11, 1
  br i1 %12, label %13, label %15

13:                                               ; preds = %10
  %14 = tail call i32 @png_crc_finish(ptr noundef nonnull %0, i32 noundef %2)
  tail call void @png_chunk_benign_error(ptr noundef nonnull %0, ptr noundef nonnull @.str.30) #5
  br label %.thread61

15:                                               ; preds = %3, %10
  %16 = getelementptr inbounds i8, ptr %0, i64 284
  %17 = load i32, ptr %16, align 4, !tbaa !20
  %18 = and i32 %17, 1
  %19 = icmp eq i32 %18, 0
  br i1 %19, label %20, label %21

20:                                               ; preds = %15
  tail call void @png_chunk_error(ptr noundef nonnull %0, ptr noundef nonnull @.str.6) #6
  unreachable

21:                                               ; preds = %15
  %22 = and i32 %17, 4
  %.not52 = icmp eq i32 %22, 0
  br i1 %.not52, label %25, label %23

23:                                               ; preds = %21
  %24 = or i32 %17, 8
  store i32 %24, ptr %16, align 4, !tbaa !20
  br label %25

25:                                               ; preds = %23, %21
  %26 = zext i32 %2 to i64
  %27 = tail call ptr @png_read_buffer(ptr noundef nonnull %0, i64 noundef %26, i32 noundef 2)
  %28 = icmp eq ptr %27, null
  br i1 %28, label %29, label %31

29:                                               ; preds = %25
  %30 = tail call i32 @png_crc_finish(ptr noundef nonnull %0, i32 noundef %2)
  tail call void @png_chunk_benign_error(ptr noundef nonnull %0, ptr noundef nonnull @.str.16) #5
  br label %.thread61

31:                                               ; preds = %25
  tail call void @png_crc_read(ptr noundef nonnull %0, ptr noundef nonnull %27, i32 noundef %2)
  %32 = tail call i32 @png_crc_finish(ptr noundef nonnull %0, i32 noundef 0)
  %.not53 = icmp eq i32 %32, 0
  br i1 %.not53, label %.preheader, label %.thread61

.preheader:                                       ; preds = %31
  %.not = icmp eq i32 %2, 0
  br i1 %.not, label %.thread, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader, %35
  %indvars.iv = phi i64 [ %indvars.iv.next, %35 ], [ 0, %.preheader ]
  %33 = getelementptr inbounds i8, ptr %27, i64 %indvars.iv
  %34 = load i8, ptr %33, align 1, !tbaa !21
  %.not54 = icmp eq i8 %34, 0
  br i1 %.not54, label %.critedge.split.loop.exit, label %35

35:                                               ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %26
  br i1 %exitcond.not, label %.critedge, label %.lr.ph, !llvm.loop !22

.critedge.split.loop.exit:                        ; preds = %.lr.ph
  %36 = trunc nuw i64 %indvars.iv to i32
  br label %.critedge

.critedge:                                        ; preds = %35, %.critedge.split.loop.exit
  %.0.lcssa = phi i32 [ %36, %.critedge.split.loop.exit ], [ %2, %35 ]
  %37 = add i32 %.0.lcssa, -80
  %or.cond = icmp ult i32 %37, -79
  br i1 %or.cond, label %.thread, label %38

38:                                               ; preds = %.critedge
  %39 = add nuw nsw i32 %.0.lcssa, 3
  %40 = icmp ugt i32 %39, %2
  br i1 %40, label %.thread, label %41

41:                                               ; preds = %38
  %42 = zext nneg i32 %.0.lcssa to i64
  %43 = getelementptr inbounds i8, ptr %27, i64 %42
  %44 = getelementptr inbounds i8, ptr %43, i64 1
  %45 = load i8, ptr %44, align 1, !tbaa !21
  %.not55 = icmp eq i8 %45, 0
  br i1 %.not55, label %46, label %.thread

46:                                               ; preds = %41
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #5
  store i64 -1, ptr %4, align 8, !tbaa !24
  %47 = add nuw nsw i32 %.0.lcssa, 2
  %48 = call i32 @png_decompress_chunk(ptr noundef %0, i32 noundef %2, i32 noundef %47, ptr noundef nonnull %4, i32 noundef 1)
  %49 = icmp eq i32 %48, 1
  br i1 %49, label %50, label %65

50:                                               ; preds = %46
  call void @llvm.lifetime.start.p0(i64 56, ptr nonnull %5) #5
  %51 = getelementptr inbounds i8, ptr %0, i64 992
  %52 = load ptr, ptr %51, align 8, !tbaa !25
  %53 = load i64, ptr %4, align 8, !tbaa !24
  %54 = zext nneg i32 %47 to i64
  %55 = getelementptr i8, ptr %52, i64 %53
  %56 = getelementptr i8, ptr %55, i64 %54
  store i8 0, ptr %56, align 1, !tbaa !21
  store i32 0, ptr %5, align 8, !tbaa !26
  %57 = getelementptr inbounds i8, ptr %5, i64 8
  store ptr %52, ptr %57, align 8, !tbaa !28
  %58 = getelementptr inbounds i8, ptr %52, i64 %42
  %59 = getelementptr inbounds i8, ptr %58, i64 2
  %60 = getelementptr inbounds i8, ptr %5, i64 16
  store ptr %59, ptr %60, align 8, !tbaa !29
  %61 = load i64, ptr %4, align 8, !tbaa !24
  %62 = getelementptr inbounds i8, ptr %5, i64 24
  store i64 %61, ptr %62, align 8, !tbaa !30
  %63 = getelementptr inbounds i8, ptr %5, i64 32
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %63, i8 0, i64 24, i1 false)
  %64 = call i32 @png_set_text_2(ptr noundef %0, ptr noundef %1, ptr noundef nonnull %5, i32 noundef 1) #5
  %.not56 = icmp eq i32 %64, 0
  call void @llvm.lifetime.end.p0(i64 56, ptr nonnull %5) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #5
  br i1 %.not56, label %.thread61, label %.thread

65:                                               ; preds = %46
  %66 = getelementptr inbounds i8, ptr %0, i64 352
  %67 = load ptr, ptr %66, align 8, !tbaa !31
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #5
  %.not57 = icmp eq ptr %67, null
  br i1 %.not57, label %.thread61, label %.thread

.thread:                                          ; preds = %50, %.preheader, %41, %38, %.critedge, %65
  %.260 = phi ptr [ %67, %65 ], [ @.str.31, %41 ], [ @.str.17, %38 ], [ @.str.19, %.critedge ], [ @.str.19, %.preheader ], [ @.str.32, %50 ]
  call void @png_chunk_benign_error(ptr noundef %0, ptr noundef nonnull %.260) #5
  br label %.thread61

.thread61:                                        ; preds = %50, %65, %.thread, %31, %29, %13, %8
  ret void
}

; Function Attrs: nounwind uwtable
declare hidden i32 @png_decompress_chunk(ptr noalias noundef, i32 noundef, i32 noundef, ptr noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #4

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { noreturn "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 = { "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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #5 = { nounwind }
attributes #6 = { noreturn 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, !11, i64 940}
!6 = !{!"png_struct_def", !7, i64 0, !9, i64 200, !9, i64 208, !10, i64 216, !9, i64 224, !9, i64 232, !9, i64 240, !9, i64 248, !9, i64 256, !9, i64 264, !9, i64 272, !7, i64 280, !7, i64 281, !11, i64 284, !11, i64 288, !11, i64 292, !11, i64 296, !12, i64 304, !11, i64 416, !11, i64 420, !11, i64 424, !11, i64 428, !10, i64 432, !11, i64 440, !11, i64 444, !11, i64 448, !9, i64 456, !9, i64 464, !10, i64 472, !11, i64 480, !11, i64 484, !9, i64 488, !13, i64 496, !11, i64 500, !13, i64 504, !7, i64 506, !7, i64 507, !7, i64 508, !7, i64 509, !7, i64 510, !7, i64 511, !7, i64 512, !7, i64 513, !7, i64 514, !7, i64 515, !7, i64 516, !7, i64 517, !7, i64 518, !13, i64 520, !7, i64 522, !11, i64 524, !14, i64 528, !14, i64 538, !11, i64 548, !11, i64 552, !9, i64 560, !9, i64 568, !9, i64 576, !9, i64 584, !9, i64 592, !9, i64 600, !15, i64 608, !15, i64 613, !9, i64 624, !14, i64 632, !9, i64 648, !9, i64 656, !9, i64 664, !9, i64 672, !9, i64 680, !9, i64 688, !9, i64 696, !9, i64 704, !9, i64 712, !11, i64 720, !11, i64 724, !10, i64 728, !10, i64 736, !10, i64 744, !10, i64 752, !11, i64 760, !11, i64 764, !9, i64 768, !9, i64 776, !7, i64 784, !7, i64 785, !11, i64 816, !9, i64 824, !9, i64 832, !11, i64 840, !11, i64 844, !9, i64 848, !7, i64 856, !7, i64 857, !13, i64 858, !13, i64 860, !11, i64 864, !7, i64 868, !9, i64 872, !9, i64 880, !9, i64 888, !9, i64 896, !9, i64 904, !9, i64 912, !9, i64 920, !7, i64 928, !11, i64 932, !11, i64 936, !11, i64 940, !10, i64 944, !16, i64 952, !10, i64 984, !9, i64 992, !10, i64 1000, !11, i64 1008, !11, i64 1012, !9, i64 1016, !7, i64 1024, !17, i64 1056}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!"any pointer", !7, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!"int", !7, i64 0}
!12 = !{!"z_stream_s", !9, i64 0, !11, i64 8, !10, i64 16, !9, i64 24, !11, i64 32, !10, i64 40, !9, i64 48, !9, i64 56, !9, i64 64, !9, i64 72, !9, i64 80, !11, i64 88, !10, i64 96, !10, i64 104}
!13 = !{!"short", !7, i64 0}
!14 = !{!"png_color_16_struct", !7, i64 0, !13, i64 2, !13, i64 4, !13, i64 6, !13, i64 8}
!15 = !{!"png_color_8_struct", !7, i64 0, !7, i64 1, !7, i64 2, !7, i64 3, !7, i64 4}
!16 = !{!"png_unknown_chunk_t", !7, i64 0, !9, i64 8, !10, i64 16, !7, i64 24}
!17 = !{!"png_colorspace", !11, i64 0, !18, i64 4, !19, i64 36, !13, i64 72, !13, i64 74}
!18 = !{!"png_xy", !11, i64 0, !11, i64 4, !11, i64 8, !11, i64 12, !11, i64 16, !11, i64 20, !11, i64 24, !11, i64 28}
!19 = !{!"png_XYZ", !11, i64 0, !11, i64 4, !11, i64 8, !11, i64 12, !11, i64 16, !11, i64 20, !11, i64 24, !11, i64 28, !11, i64 32}
!20 = !{!6, !11, i64 284}
!21 = !{!7, !7, i64 0}
!22 = distinct !{!22, !23}
!23 = !{!"llvm.loop.mustprogress"}
!24 = !{!10, !10, i64 0}
!25 = !{!6, !9, i64 992}
!26 = !{!27, !11, i64 0}
!27 = !{!"png_text_struct", !11, i64 0, !9, i64 8, !9, i64 16, !10, i64 24, !10, i64 32, !9, i64 40, !9, i64 48}
!28 = !{!27, !9, i64 8}
!29 = !{!27, !9, i64 16}
!30 = !{!27, !10, i64 24}
!31 = !{!6, !9, i64 352}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,MemCpyOptPass,SROAPass,SimplifyCFGPass,TailCallElimPass