; LLVM IR from moarseniy/CudaFEMproject :: FEMproject/thirdparty/segyio2/src (segy)

; 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.segy_file_handle = type { ptr, ptr, ptr, i64, [5 x i8], i32, i32, i32 }

; 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
define dso_local i32 @segy_set_format(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %9 = load i32, ptr %5, align 4, !tbaa !9
  %10 = and i32 %9, 255
  store i32 %10, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %11 = load i32, ptr %6, align 4, !tbaa !9
  %12 = call i32 @formatsize(i32 noundef %11)
  store i32 %12, ptr %7, align 4, !tbaa !9
  %13 = load i32, ptr %6, align 4, !tbaa !9
  %14 = icmp ne i32 %13, 0
  br i1 %14, label %15, label %19

15:                                               ; preds = %2
  %16 = load i32, ptr %7, align 4, !tbaa !9
  %17 = icmp sle i32 %16, 0
  br i1 %17, label %18, label %19

18:                                               ; preds = %15
  store i32 10, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %37

19:                                               ; preds = %15, %2
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = and i32 %20, 65280
  switch i32 %21, label %28 [
    i32 0, label %29
    i32 256, label %22
    i32 512, label %25
  ]

22:                                               ; preds = %19
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.segy_file_handle, ptr %23, i32 0, i32 7
  store i32 1, ptr %24, align 8, !tbaa !11
  br label %29

25:                                               ; preds = %19
  %26 = load ptr, ptr %4, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.segy_file_handle, ptr %26, i32 0, i32 7
  store i32 0, ptr %27, align 8, !tbaa !11
  br label %29

28:                                               ; preds = %19
  store i32 10, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %37

29:                                               ; preds = %25, %22, %19
  %30 = load i32, ptr %7, align 4, !tbaa !9
  %31 = icmp sgt i32 %30, 0
  br i1 %31, label %32, label %36

32:                                               ; preds = %29
  %33 = load i32, ptr %7, align 4, !tbaa !9
  %34 = load ptr, ptr %4, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.segy_file_handle, ptr %34, i32 0, i32 6
  store i32 %33, ptr %35, align 4, !tbaa !14
  br label %36

36:                                               ; preds = %32, %29
  store i32 0, ptr %3, align 4
  store i32 1, ptr %8, align 4
  br label %37

37:                                               ; preds = %36, %28, %18
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %38 = load i32, ptr %3, align 4
  ret i32 %38
}

; Function Attrs: nounwind uwtable
declare hidden i32 @formatsize(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 = { 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 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 48}
!12 = !{!"segy_file_handle", !6, i64 0, !6, i64 8, !6, i64 16, !13, i64 24, !7, i64 32, !10, i64 40, !10, i64 44, !10, i64 48}
!13 = !{!"long", !7, i64 0}
!14 = !{!12, !10, i64 44}


; 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
define dso_local range(i32 0, 11) i32 @segy_set_format(ptr nocapture noundef writeonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = and i32 %1, 255
  %4 = tail call i32 @formatsize(i32 noundef %3)
  %5 = icmp ne i32 %3, 0
  %6 = icmp slt i32 %4, 1
  %or.cond = select i1 %5, i1 %6, i1 false
  br i1 %or.cond, label %15, label %7

7:                                                ; preds = %2
  %8 = trunc i32 %1 to i16
  %trunc = and i16 %8, -256
  switch i16 %trunc, label %15 [
    i16 0, label %11
    i16 256, label %.sink.split
    i16 512, label %9
  ]

9:                                                ; preds = %7
  br label %.sink.split

.sink.split:                                      ; preds = %7, %9
  %.sink = phi i32 [ 0, %9 ], [ 1, %7 ]
  %10 = getelementptr inbounds i8, ptr %0, i64 48
  store i32 %.sink, ptr %10, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %.sink.split, %7
  %12 = icmp sgt i32 %4, 0
  br i1 %12, label %13, label %15

13:                                               ; preds = %11
  %14 = getelementptr inbounds i8, ptr %0, i64 44
  store i32 %4, ptr %14, align 4, !tbaa !12
  br label %15

15:                                               ; preds = %11, %13, %7, %2
  %.0 = phi i32 [ 10, %2 ], [ 10, %7 ], [ 0, %13 ], [ 0, %11 ]
  ret i32 %.0
}

; Function Attrs: nounwind uwtable
declare hidden i32 @formatsize(i32 noundef) local_unnamed_addr #0

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" }

!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 48}
!6 = !{!"segy_file_handle", !7, i64 0, !7, i64 8, !7, i64 16, !10, i64 24, !8, i64 32, !11, i64 40, !11, i64 44, !11, i64 48}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!"int", !8, i64 0}
!12 = !{!6, !11, i64 44}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass