; LLVM IR from facebookresearch/habitat-sim :: src/deps/basis-universal/encoder/jpgd.ll (ZN4jpgd12jpeg_decoder15process_markersEv)

; 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: 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: mustprogress noreturn uwtable
declare dso_local void @_ZN4jpgd12jpeg_decoder13stop_decodingENS_11jpgd_statusE(ptr noundef nonnull align 8 dereferenceable(13523), i32 noundef) #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN4jpgd12jpeg_decoder15read_dht_markerEv(ptr noundef nonnull align 8 dereferenceable(13523)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN4jpgd12jpeg_decoder15read_dqt_markerEv(ptr noundef nonnull align 8 dereferenceable(13523)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN4jpgd12jpeg_decoder20skip_variable_markerEv(ptr noundef nonnull align 8 dereferenceable(13523)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN4jpgd12jpeg_decoder15read_dri_markerEv(ptr noundef nonnull align 8 dereferenceable(13523)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN4jpgd12jpeg_decoder11next_markerEv(ptr noundef nonnull align 8 dereferenceable(13523)) #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN4jpgd12jpeg_decoder15process_markersEv(ptr noundef nonnull align 8 dereferenceable(13523) %0) #2 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  br label %5

5:                                                ; preds = %16, %1
  %6 = call noundef i32 @_ZN4jpgd12jpeg_decoder11next_markerEv(ptr noundef nonnull align 8 dereferenceable(13523) %4)
  store i32 %6, ptr %3, align 4, !tbaa !9
  %7 = load i32, ptr %3, align 4, !tbaa !9
  switch i32 %7, label %15 [
    i32 192, label %8
    i32 193, label %8
    i32 194, label %8
    i32 195, label %8
    i32 197, label %8
    i32 198, label %8
    i32 199, label %8
    i32 201, label %8
    i32 202, label %8
    i32 203, label %8
    i32 205, label %8
    i32 206, label %8
    i32 207, label %8
    i32 216, label %8
    i32 217, label %8
    i32 218, label %8
    i32 196, label %10
    i32 204, label %11
    i32 219, label %12
    i32 221, label %13
    i32 200, label %14
    i32 208, label %14
    i32 209, label %14
    i32 210, label %14
    i32 211, label %14
    i32 212, label %14
    i32 213, label %14
    i32 214, label %14
    i32 215, label %14
    i32 1, label %14
  ]

8:                                                ; preds = %5, %5, %5, %5, %5, %5, %5, %5, %5, %5, %5, %5, %5, %5, %5, %5
  %9 = load i32, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret i32 %9

10:                                               ; preds = %5
  call void @_ZN4jpgd12jpeg_decoder15read_dht_markerEv(ptr noundef nonnull align 8 dereferenceable(13523) %4)
  br label %16

11:                                               ; preds = %5
  call void @_ZN4jpgd12jpeg_decoder13stop_decodingENS_11jpgd_statusE(ptr noundef nonnull align 8 dereferenceable(13523) %4, i32 noundef -241) #4
  unreachable

12:                                               ; preds = %5
  call void @_ZN4jpgd12jpeg_decoder15read_dqt_markerEv(ptr noundef nonnull align 8 dereferenceable(13523) %4)
  br label %16

13:                                               ; preds = %5
  call void @_ZN4jpgd12jpeg_decoder15read_dri_markerEv(ptr noundef nonnull align 8 dereferenceable(13523) %4)
  br label %16

14:                                               ; preds = %5, %5, %5, %5, %5, %5, %5, %5, %5, %5
  call void @_ZN4jpgd12jpeg_decoder13stop_decodingENS_11jpgd_statusE(ptr noundef nonnull align 8 dereferenceable(13523) %4, i32 noundef -240) #4
  unreachable

15:                                               ; preds = %5
  call void @_ZN4jpgd12jpeg_decoder20skip_variable_markerEv(ptr noundef nonnull align 8 dereferenceable(13523) %4)
  br label %16

16:                                               ; preds = %15, %13, %12, %10
  br label %5, !llvm.loop !11
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress noreturn 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 = { 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 #3 = { nounwind }
attributes #4 = { 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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: mustprogress noreturn uwtable
declare dso_local void @_ZN4jpgd12jpeg_decoder13stop_decodingENS_11jpgd_statusE(ptr noundef nonnull align 8 dereferenceable(13523), i32 noundef) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN4jpgd12jpeg_decoder15read_dht_markerEv(ptr noundef nonnull align 8 dereferenceable(13523)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN4jpgd12jpeg_decoder15read_dqt_markerEv(ptr noundef nonnull align 8 dereferenceable(13523)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN4jpgd12jpeg_decoder20skip_variable_markerEv(ptr noundef nonnull align 8 dereferenceable(13523)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZN4jpgd12jpeg_decoder15read_dri_markerEv(ptr noundef nonnull align 8 dereferenceable(13523)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN4jpgd12jpeg_decoder11next_markerEv(ptr noundef nonnull align 8 dereferenceable(13523)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN4jpgd12jpeg_decoder15process_markersEv(ptr noundef nonnull align 8 dereferenceable(13523) %0) local_unnamed_addr #1 align 2 {
  br label %2

2:                                                ; preds = %.backedge, %1
  %3 = tail call noundef i32 @_ZN4jpgd12jpeg_decoder11next_markerEv(ptr noundef nonnull align 8 dereferenceable(13523) %0)
  switch i32 %3, label %10 [
    i32 192, label %4
    i32 193, label %4
    i32 194, label %4
    i32 195, label %4
    i32 197, label %4
    i32 198, label %4
    i32 199, label %4
    i32 201, label %4
    i32 202, label %4
    i32 203, label %4
    i32 205, label %4
    i32 206, label %4
    i32 207, label %4
    i32 216, label %4
    i32 217, label %4
    i32 218, label %4
    i32 196, label %5
    i32 204, label %6
    i32 219, label %7
    i32 221, label %8
    i32 200, label %9
    i32 208, label %9
    i32 209, label %9
    i32 210, label %9
    i32 211, label %9
    i32 212, label %9
    i32 213, label %9
    i32 214, label %9
    i32 215, label %9
    i32 1, label %9
  ]

4:                                                ; preds = %2, %2, %2, %2, %2, %2, %2, %2, %2, %2, %2, %2, %2, %2, %2, %2
  ret i32 %3

5:                                                ; preds = %2
  tail call void @_ZN4jpgd12jpeg_decoder15read_dht_markerEv(ptr noundef nonnull align 8 dereferenceable(13523) %0)
  br label %.backedge

6:                                                ; preds = %2
  tail call void @_ZN4jpgd12jpeg_decoder13stop_decodingENS_11jpgd_statusE(ptr noundef nonnull align 8 dereferenceable(13523) %0, i32 noundef -241) #2
  unreachable

7:                                                ; preds = %2
  tail call void @_ZN4jpgd12jpeg_decoder15read_dqt_markerEv(ptr noundef nonnull align 8 dereferenceable(13523) %0)
  br label %.backedge

8:                                                ; preds = %2
  tail call void @_ZN4jpgd12jpeg_decoder15read_dri_markerEv(ptr noundef nonnull align 8 dereferenceable(13523) %0)
  br label %.backedge

9:                                                ; preds = %2, %2, %2, %2, %2, %2, %2, %2, %2, %2
  tail call void @_ZN4jpgd12jpeg_decoder13stop_decodingENS_11jpgd_statusE(ptr noundef nonnull align 8 dereferenceable(13523) %0, i32 noundef -240) #2
  unreachable

10:                                               ; preds = %2
  tail call void @_ZN4jpgd12jpeg_decoder20skip_variable_markerEv(ptr noundef nonnull align 8 dereferenceable(13523) %0)
  br label %.backedge

.backedge:                                        ; preds = %10, %8, %7, %5
  br label %2, !llvm.loop !5
}

attributes #0 = { mustprogress noreturn 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 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 }

!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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass