; 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_tfinfo = type { i8, i8, i32, i32, i16, i32, i8, i32, [512 x i8] }

@tf_info = external dso_local global %struct.struct_tfinfo, align 4

; 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 i32 @tf_fetch(i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @tf_set_fat_entry(i32 noundef %0, i32 noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %7 = load i32, ptr %3, align 4, !tbaa !5
  %8 = mul i32 %7, 4
  store i32 %8, ptr %5, align 4, !tbaa !5
  %9 = load i16, ptr getelementptr inbounds (%struct.struct_tfinfo, ptr @tf_info, i32 0, i32 4), align 4, !tbaa !9
  %10 = zext i16 %9 to i32
  %11 = load i32, ptr %5, align 4, !tbaa !5
  %12 = udiv i32 %11, 512
  %13 = add i32 %10, %12
  %14 = call i32 @tf_fetch(i32 noundef %13)
  store i32 %14, ptr %6, align 4, !tbaa !5
  %15 = load i32, ptr %5, align 4, !tbaa !5
  %16 = urem i32 %15, 512
  %17 = zext i32 %16 to i64
  %18 = getelementptr inbounds [512 x i8], ptr getelementptr inbounds (%struct.struct_tfinfo, ptr @tf_info, i32 0, i32 8), i64 0, i64 %17
  %19 = load i32, ptr %18, align 1, !tbaa !5
  %20 = load i32, ptr %4, align 4, !tbaa !5
  %21 = icmp ne i32 %19, %20
  br i1 %21, label %22, label %32

22:                                               ; preds = %2
  %23 = load i8, ptr getelementptr inbounds (%struct.struct_tfinfo, ptr @tf_info, i32 0, i32 6), align 4, !tbaa !12
  %24 = zext i8 %23 to i32
  %25 = or i32 %24, 1
  %26 = trunc i32 %25 to i8
  store i8 %26, ptr getelementptr inbounds (%struct.struct_tfinfo, ptr @tf_info, i32 0, i32 6), align 4, !tbaa !12
  %27 = load i32, ptr %4, align 4, !tbaa !5
  %28 = load i32, ptr %5, align 4, !tbaa !5
  %29 = urem i32 %28, 512
  %30 = zext i32 %29 to i64
  %31 = getelementptr inbounds [512 x i8], ptr getelementptr inbounds (%struct.struct_tfinfo, ptr @tf_info, i32 0, i32 8), i64 0, i64 %30
  store i32 %27, ptr %31, align 1, !tbaa !5
  br label %32

32:                                               ; preds = %22, %2
  %33 = load i32, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i32 %33
}

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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !11, i64 12}
!10 = !{!"struct_tfinfo", !7, i64 0, !7, i64 1, !6, i64 4, !6, i64 8, !11, i64 12, !6, i64 16, !7, i64 20, !6, i64 24, !7, i64 28}
!11 = !{!"short", !7, i64 0}
!12 = !{!10, !7, i64 20}


; 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.struct_tfinfo = type { i8, i8, i32, i32, i16, i32, i8, i32, [512 x i8] }

@tf_info = external dso_local local_unnamed_addr global %struct.struct_tfinfo, align 4

; Function Attrs: nounwind uwtable
declare dso_local i32 @tf_fetch(i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local i32 @tf_set_fat_entry(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = shl i32 %0, 2
  %4 = load i16, ptr getelementptr inbounds (i8, ptr @tf_info, i64 12), align 4, !tbaa !5
  %5 = zext i16 %4 to i32
  %6 = lshr i32 %3, 9
  %7 = add nuw nsw i32 %6, %5
  %8 = tail call i32 @tf_fetch(i32 noundef %7)
  %9 = and i32 %3, 508
  %10 = zext nneg i32 %9 to i64
  %11 = getelementptr inbounds [512 x i8], ptr getelementptr inbounds (i8, ptr @tf_info, i64 28), i64 0, i64 %10
  %12 = load i32, ptr %11, align 4, !tbaa !11
  %.not = icmp eq i32 %12, %1
  br i1 %.not, label %16, label %13

13:                                               ; preds = %2
  %14 = load i8, ptr getelementptr inbounds (i8, ptr @tf_info, i64 20), align 4, !tbaa !12
  %15 = or i8 %14, 1
  store i8 %15, ptr getelementptr inbounds (i8, ptr @tf_info, i64 20), align 4, !tbaa !12
  store i32 %1, ptr %11, align 4, !tbaa !11
  br label %16

16:                                               ; preds = %13, %2
  ret i32 %8
}

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, !10, i64 12}
!6 = !{!"struct_tfinfo", !7, i64 0, !7, i64 1, !9, i64 4, !9, i64 8, !10, i64 12, !9, i64 16, !7, i64 20, !9, i64 24, !7, i64 28}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!"int", !7, i64 0}
!10 = !{!"short", !7, i64 0}
!11 = !{!9, !9, i64 0}
!12 = !{!6, !7, i64 20}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,ReassociatePass,SROAPass,TailCallElimPass