; LLVM IR from ryansturmer/thinfat32 :: src (thinfat32)

; 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.struct_TFFILE = type { i32, i32, i32, i32, i16, i16, i32, i8, i8, i8, i32, [256 x i8] }

@tf_file_handles = external dso_local global [5 x %struct.struct_TFFILE], align 16

; 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 i64 @tf_get_open_handles() #1 {
  %1 = alloca i32, align 4
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %1) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  store i64 0, ptr %3, align 8, !tbaa !5
  store i32 0, ptr %1, align 4, !tbaa !9
  br label %4

4:                                                ; preds = %26, %0
  %5 = load i32, ptr %1, align 4, !tbaa !9
  %6 = icmp slt i32 %5, 1
  %7 = zext i1 %6 to i64
  %8 = select i1 %6, i32 5, i32 64
  %9 = icmp ne i32 %8, 0
  br i1 %9, label %10, label %29

10:                                               ; preds = %4
  %11 = load i64, ptr %3, align 8, !tbaa !5
  %12 = shl i64 %11, 1
  store i64 %12, ptr %3, align 8, !tbaa !5
  %13 = load i32, ptr %1, align 4, !tbaa !9
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds [5 x %struct.struct_TFFILE], ptr @tf_file_handles, i64 0, i64 %14
  store ptr %15, ptr %2, align 8, !tbaa !11
  %16 = load ptr, ptr %2, align 8, !tbaa !11
  %17 = getelementptr inbounds %struct.struct_TFFILE, ptr %16, i32 0, i32 7
  %18 = load i8, ptr %17, align 4, !tbaa !13
  %19 = zext i8 %18 to i32
  %20 = and i32 %19, 2
  %21 = icmp ne i32 %20, 0
  br i1 %21, label %22, label %25

22:                                               ; preds = %10
  %23 = load i64, ptr %3, align 8, !tbaa !5
  %24 = or i64 %23, 1
  store i64 %24, ptr %3, align 8, !tbaa !5
  br label %25

25:                                               ; preds = %22, %10
  br label %26

26:                                               ; preds = %25
  %27 = load i32, ptr %1, align 4, !tbaa !9
  %28 = add nsw i32 %27, 1
  store i32 %28, ptr %1, align 4, !tbaa !9
  br label %4, !llvm.loop !16

29:                                               ; preds = %4
  %30 = load i64, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #2
  ret i64 %30
}

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 = !{!"long", !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, !12, i64 0}
!12 = !{!"any pointer", !7, i64 0}
!13 = !{!14, !7, i64 24}
!14 = !{!"struct_TFFILE", !10, i64 0, !10, i64 4, !10, i64 8, !10, i64 12, !15, i64 16, !15, i64 18, !10, i64 20, !7, i64 24, !7, i64 25, !7, i64 26, !10, i64 28, !7, i64 32}
!15 = !{!"short", !7, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"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 nofree norecurse noreturn nosync nounwind willreturn memory(none) uwtable
define dso_local noundef i64 @tf_get_open_handles() local_unnamed_addr #0 {
  unreachable
}

attributes #0 = { mustprogress nofree norecurse noreturn nosync nounwind willreturn memory(none) 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)"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass