; LLVM IR from tum-i4/obfuscation-benchmarks :: basic-algorithms (gcd)

; 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"

@.str = external hidden unnamed_addr constant [26 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main(i32 noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i64, align 8
  store i32 0, ptr %3, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  %11 = load i32, ptr %4, align 4, !tbaa !5
  %12 = icmp slt i32 %11, 3
  br i1 %12, label %13, label %14

13:                                               ; preds = %2
  store i32 1, ptr %3, align 4
  br label %60

14:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #4
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #4
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #4
  %15 = call i64 @time(ptr noundef %10) #4
  %16 = trunc i64 %15 to i32
  call void @srand(i32 noundef %16) #4
  %17 = load ptr, ptr %5, align 8, !tbaa !9
  %18 = getelementptr inbounds ptr, ptr %17, i64 1
  %19 = load ptr, ptr %18, align 8, !tbaa !9
  %20 = getelementptr inbounds i8, ptr %19, i64 0
  %21 = load i8, ptr %20, align 1, !tbaa !11
  %22 = sext i8 %21 to i32
  store i32 %22, ptr %6, align 4, !tbaa !5
  %23 = load ptr, ptr %5, align 8, !tbaa !9
  %24 = getelementptr inbounds ptr, ptr %23, i64 2
  %25 = load ptr, ptr %24, align 8, !tbaa !9
  %26 = getelementptr inbounds i8, ptr %25, i64 0
  %27 = load i8, ptr %26, align 1, !tbaa !11
  %28 = sext i8 %27 to i32
  store i32 %28, ptr %7, align 4, !tbaa !5
  store i32 1, ptr %8, align 4, !tbaa !5
  br label %29

29:                                               ; preds = %52, %14
  %30 = load i32, ptr %8, align 4, !tbaa !5
  %31 = load i32, ptr %6, align 4, !tbaa !5
  %32 = icmp sle i32 %30, %31
  br i1 %32, label %37, label %33

33:                                               ; preds = %29
  %34 = load i32, ptr %8, align 4, !tbaa !5
  %35 = load i32, ptr %7, align 4, !tbaa !5
  %36 = icmp sle i32 %34, %35
  br label %37

37:                                               ; preds = %33, %29
  %38 = phi i1 [ true, %29 ], [ %36, %33 ]
  br i1 %38, label %39, label %55

39:                                               ; preds = %37
  %40 = load i32, ptr %6, align 4, !tbaa !5
  %41 = load i32, ptr %8, align 4, !tbaa !5
  %42 = srem i32 %40, %41
  %43 = icmp eq i32 %42, 0
  br i1 %43, label %44, label %51

44:                                               ; preds = %39
  %45 = load i32, ptr %7, align 4, !tbaa !5
  %46 = load i32, ptr %8, align 4, !tbaa !5
  %47 = srem i32 %45, %46
  %48 = icmp eq i32 %47, 0
  br i1 %48, label %49, label %51

49:                                               ; preds = %44
  %50 = load i32, ptr %8, align 4, !tbaa !5
  store i32 %50, ptr %9, align 4, !tbaa !5
  br label %51

51:                                               ; preds = %49, %44, %39
  br label %52

52:                                               ; preds = %51
  %53 = load i32, ptr %8, align 4, !tbaa !5
  %54 = add nsw i32 %53, 1
  store i32 %54, ptr %8, align 4, !tbaa !5
  br label %29, !llvm.loop !12

55:                                               ; preds = %37
  %56 = load i32, ptr %6, align 4, !tbaa !5
  %57 = load i32, ptr %7, align 4, !tbaa !5
  %58 = load i32, ptr %9, align 4, !tbaa !5
  %59 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %56, i32 noundef %57, i32 noundef %58)
  store i32 0, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #4
  br label %60

60:                                               ; preds = %55, %13
  %61 = load i32, ptr %3, align 4
  ret i32 %61
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind
declare void @srand(i32 noundef) #2

; Function Attrs: nounwind
declare i64 @time(ptr noundef) #2

declare i32 @printf(ptr noundef, ...) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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

!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, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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"

@.str = external hidden unnamed_addr constant [26 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local range(i32 0, 2) i32 @main(i32 noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = alloca i64, align 8
  %4 = icmp slt i32 %0, 3
  br i1 %4, label %25, label %5

5:                                                ; preds = %2
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %3) #6
  %6 = call i64 @time(ptr noundef nonnull %3) #6
  %7 = trunc i64 %6 to i32
  call void @srand(i32 noundef %7) #6
  %8 = getelementptr inbounds i8, ptr %1, i64 8
  %9 = load ptr, ptr %8, align 8, !tbaa !5
  %10 = load i8, ptr %9, align 1, !tbaa !9
  %11 = sext i8 %10 to i32
  %12 = getelementptr inbounds i8, ptr %1, i64 16
  %13 = load ptr, ptr %12, align 8, !tbaa !5
  %14 = load i8, ptr %13, align 1, !tbaa !9
  %.fr22 = freeze i8 %14
  %15 = sext i8 %.fr22 to i32
  %invariant.smax = call i32 @llvm.smax.i32(i32 %11, i32 %15)
  %16 = icmp sgt i32 %invariant.smax, 0
  call void @llvm.assume(i1 %16)
  br label %.lr.ph

.lr.ph:                                           ; preds = %5, %22
  %.021 = phi i32 [ %.1, %22 ], [ undef, %5 ]
  %.01620 = phi i32 [ %23, %22 ], [ 1, %5 ]
  %17 = srem i32 %11, %.01620
  %18 = icmp eq i32 %17, 0
  br i1 %18, label %19, label %22

19:                                               ; preds = %.lr.ph
  %20 = srem i32 %15, %.01620
  %21 = icmp eq i32 %20, 0
  %spec.select = select i1 %21, i32 %.01620, i32 %.021
  br label %22

22:                                               ; preds = %19, %.lr.ph
  %.1 = phi i32 [ %.021, %.lr.ph ], [ %spec.select, %19 ]
  %23 = add nuw i32 %.01620, 1
  %exitcond.not = icmp eq i32 %.01620, %invariant.smax
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !10

._crit_edge:                                      ; preds = %22
  %24 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %11, i32 noundef %15, i32 noundef %.1)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %3) #6
  br label %25

25:                                               ; preds = %2, %._crit_edge
  %.017 = phi i32 [ 0, %._crit_edge ], [ 1, %2 ]
  ret i32 %.017
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind
declare void @srand(i32 noundef) local_unnamed_addr #2

; Function Attrs: nounwind
declare i64 @time(ptr noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #3

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smax.i32(i32, i32) #4

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write)
declare void @llvm.assume(i1 noundef) #5

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" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { nounwind "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 = { nofree nounwind "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 nosync nounwind speculatable willreturn memory(none) }
attributes #5 = { nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write) }
attributes #6 = { 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 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopRotatePass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass