; LLVM IR from clausecker/24puzzle :: search (path_string)

; 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.path = type { i64, [256 x i8] }

@.str = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local void @path_string(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 0, ptr %6, align 8, !tbaa !9
  store i64 0, ptr %5, align 8, !tbaa !9
  br label %7

7:                                                ; preds = %31, %2
  %8 = load i64, ptr %5, align 8, !tbaa !9
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.path, ptr %9, i32 0, i32 0
  %11 = load i64, ptr %10, align 8, !tbaa !11
  %12 = icmp ult i64 %8, %11
  br i1 %12, label %13, label %34

13:                                               ; preds = %7
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = load i64, ptr %6, align 8, !tbaa !9
  %16 = getelementptr inbounds i8, ptr %14, i64 %15
  %17 = load ptr, ptr %4, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.path, ptr %17, i32 0, i32 1
  %19 = load i64, ptr %5, align 8, !tbaa !9
  %20 = getelementptr inbounds [256 x i8], ptr %18, i64 0, i64 %19
  %21 = load i8, ptr %20, align 1, !tbaa !13
  %22 = zext i8 %21 to i32
  %23 = call i32 (ptr, ptr, ...) @sprintf(ptr noundef %16, ptr noundef @.str, i32 noundef %22) #3
  %24 = sext i32 %23 to i64
  %25 = load i64, ptr %6, align 8, !tbaa !9
  %26 = add i64 %25, %24
  store i64 %26, ptr %6, align 8, !tbaa !9
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  %28 = load i64, ptr %6, align 8, !tbaa !9
  %29 = add i64 %28, 1
  store i64 %29, ptr %6, align 8, !tbaa !9
  %30 = getelementptr inbounds i8, ptr %27, i64 %28
  store i8 44, ptr %30, align 1, !tbaa !13
  br label %31

31:                                               ; preds = %13
  %32 = load i64, ptr %5, align 8, !tbaa !9
  %33 = add i64 %32, 1
  store i64 %33, ptr %5, align 8, !tbaa !9
  br label %7, !llvm.loop !14

34:                                               ; preds = %7
  %35 = load ptr, ptr %3, align 8, !tbaa !5
  %36 = load i64, ptr %6, align 8, !tbaa !9
  %37 = sub i64 %36, 1
  %38 = getelementptr inbounds i8, ptr %35, i64 %37
  store i8 0, ptr %38, align 1, !tbaa !13
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret void
}

; 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 i32 @sprintf(ptr noundef, ptr noundef, ...) #2

; 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 = { 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 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"path", !10, i64 0, !7, i64 8}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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 [3 x i8], align 1

; Function Attrs: nofree nounwind uwtable
define dso_local void @path_string(ptr nocapture noundef writeonly %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = load i64, ptr %1, align 8, !tbaa !5
  %.not = icmp eq i64 %3, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2
  %4 = getelementptr inbounds i8, ptr %1, i64 8
  br label %5

5:                                                ; preds = %.lr.ph, %5
  %.013 = phi i64 [ 0, %.lr.ph ], [ %13, %5 ]
  %.01112 = phi i64 [ 0, %.lr.ph ], [ %15, %5 ]
  %6 = getelementptr inbounds i8, ptr %0, i64 %.013
  %7 = getelementptr inbounds [256 x i8], ptr %4, i64 0, i64 %.01112
  %8 = load i8, ptr %7, align 1, !tbaa !10
  %9 = zext i8 %8 to i32
  %10 = tail call i32 (ptr, ptr, ...) @sprintf(ptr noundef nonnull dereferenceable(1) %6, ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %9) #2
  %11 = sext i32 %10 to i64
  %12 = add i64 %.013, %11
  %13 = add i64 %12, 1
  %14 = getelementptr inbounds i8, ptr %0, i64 %12
  store i8 44, ptr %14, align 1, !tbaa !10
  %15 = add nuw i64 %.01112, 1
  %16 = load i64, ptr %1, align 8, !tbaa !5
  %17 = icmp ult i64 %15, %16
  br i1 %17, label %5, label %._crit_edge, !llvm.loop !11

._crit_edge:                                      ; preds = %5, %2
  %.0.lcssa = phi i64 [ 0, %2 ], [ %13, %5 ]
  %18 = getelementptr i8, ptr %0, i64 %.0.lcssa
  %19 = getelementptr i8, ptr %18, i64 -1
  store i8 0, ptr %19, align 1, !tbaa !10
  ret void
}

; Function Attrs: nofree nounwind
declare noundef i32 @sprintf(ptr noalias nocapture noundef writeonly, ptr nocapture noundef readonly, ...) local_unnamed_addr #1

attributes #0 = { nofree 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 = { 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 #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, !7, i64 0}
!6 = !{!"path", !7, i64 0, !8, i64 8}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!8, !8, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass