; LLVM IR from mbheinen/bpa-ipf-tsp :: cflow (post_pvcurve)

; 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"

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local ptr @extract_dir(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = call i64 @strlen(ptr noundef %6) #4
  %8 = trunc i64 %7 to i32
  store i32 %8, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %9 = load i32, ptr %4, align 4, !tbaa !9
  %10 = sub nsw i32 %9, 1
  store i32 %10, ptr %3, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %40, %1
  %12 = load i32, ptr %3, align 4, !tbaa !9
  %13 = icmp sgt i32 %12, 0
  br i1 %13, label %14, label %38

14:                                               ; preds = %11
  %15 = load ptr, ptr %2, align 8, !tbaa !5
  %16 = load i32, ptr %3, align 4, !tbaa !9
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds i8, ptr %15, i64 %17
  %19 = load i8, ptr %18, align 1, !tbaa !11
  %20 = sext i8 %19 to i32
  %21 = icmp ne i32 %20, 93
  br i1 %21, label %22, label %38

22:                                               ; preds = %14
  %23 = load ptr, ptr %2, align 8, !tbaa !5
  %24 = load i32, ptr %3, align 4, !tbaa !9
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds i8, ptr %23, i64 %25
  %27 = load i8, ptr %26, align 1, !tbaa !11
  %28 = sext i8 %27 to i32
  %29 = icmp ne i32 %28, 47
  br i1 %29, label %30, label %38

30:                                               ; preds = %22
  %31 = load ptr, ptr %2, align 8, !tbaa !5
  %32 = load i32, ptr %3, align 4, !tbaa !9
  %33 = sext i32 %32 to i64
  %34 = getelementptr inbounds i8, ptr %31, i64 %33
  %35 = load i8, ptr %34, align 1, !tbaa !11
  %36 = sext i8 %35 to i32
  %37 = icmp ne i32 %36, 92
  br label %38

38:                                               ; preds = %30, %22, %14, %11
  %39 = phi i1 [ false, %22 ], [ false, %14 ], [ false, %11 ], [ %37, %30 ]
  br i1 %39, label %40, label %43

40:                                               ; preds = %38
  %41 = load i32, ptr %3, align 4, !tbaa !9
  %42 = add nsw i32 %41, -1
  store i32 %42, ptr %3, align 4, !tbaa !9
  br label %11, !llvm.loop !12

43:                                               ; preds = %38
  %44 = load ptr, ptr %2, align 8, !tbaa !5
  %45 = load i32, ptr %3, align 4, !tbaa !9
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds i8, ptr %44, i64 %46
  %48 = load i8, ptr %47, align 1, !tbaa !11
  %49 = sext i8 %48 to i32
  %50 = icmp eq i32 %49, 93
  br i1 %50, label %67, label %51

51:                                               ; preds = %43
  %52 = load ptr, ptr %2, align 8, !tbaa !5
  %53 = load i32, ptr %3, align 4, !tbaa !9
  %54 = sext i32 %53 to i64
  %55 = getelementptr inbounds i8, ptr %52, i64 %54
  %56 = load i8, ptr %55, align 1, !tbaa !11
  %57 = sext i8 %56 to i32
  %58 = icmp eq i32 %57, 47
  br i1 %58, label %67, label %59

59:                                               ; preds = %51
  %60 = load ptr, ptr %2, align 8, !tbaa !5
  %61 = load i32, ptr %3, align 4, !tbaa !9
  %62 = sext i32 %61 to i64
  %63 = getelementptr inbounds i8, ptr %60, i64 %62
  %64 = load i8, ptr %63, align 1, !tbaa !11
  %65 = sext i8 %64 to i32
  %66 = icmp eq i32 %65, 92
  br i1 %66, label %67, label %73

67:                                               ; preds = %59, %51, %43
  %68 = load ptr, ptr %2, align 8, !tbaa !5
  %69 = load i32, ptr %3, align 4, !tbaa !9
  %70 = add nsw i32 %69, 1
  store i32 %70, ptr %3, align 4, !tbaa !9
  %71 = sext i32 %70 to i64
  %72 = getelementptr inbounds i8, ptr %68, i64 %71
  store ptr %72, ptr %5, align 8, !tbaa !5
  br label %75

73:                                               ; preds = %59
  %74 = load ptr, ptr %2, align 8, !tbaa !5
  store ptr %74, ptr %5, align 8, !tbaa !5
  br label %75

75:                                               ; preds = %73, %67
  %76 = load ptr, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret ptr %76
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind willreturn memory(read)
declare i64 @strlen(ptr noundef) #2

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 willreturn memory(read) "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 }
attributes #4 = { nounwind willreturn memory(read) }

!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 = !{!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"

; Function Attrs: nofree nounwind memory(argmem: read) uwtable
define dso_local ptr @extract_dir(ptr noundef readonly %0) local_unnamed_addr #0 {
  %2 = tail call i64 @strlen(ptr noundef nonnull dereferenceable(1) %0) #3
  %3 = trunc i64 %2 to i32
  %4 = and i64 %2, 4294967295
  %smin = tail call i32 @llvm.smin.i32(i32 %3, i32 1)
  %5 = add i32 %smin, -1
  br label %6

6:                                                ; preds = %9, %1
  %indvars.iv = phi i64 [ %indvars.iv.next, %9 ], [ %4, %1 ]
  %7 = trunc nuw i64 %indvars.iv to i32
  %8 = icmp sgt i32 %7, 1
  br i1 %8, label %9, label %.critedge

9:                                                ; preds = %6
  %indvars.iv.next = add nsw i64 %indvars.iv, -1
  %10 = and i64 %indvars.iv.next, 4294967295
  %11 = getelementptr inbounds i8, ptr %0, i64 %10
  %12 = load i8, ptr %11, align 1, !tbaa !5
  switch i8 %12, label %6 [
    i8 93, label %.critedge.split.loop.exit
    i8 47, label %.critedge.split.loop.exit
    i8 92, label %.critedge.split.loop.exit
  ], !llvm.loop !8

.critedge.split.loop.exit:                        ; preds = %9, %9, %9
  %indvars.le = trunc i64 %indvars.iv.next to i32
  br label %.critedge

.critedge:                                        ; preds = %6, %.critedge.split.loop.exit
  %.019.in.lcssa = phi i32 [ %7, %.critedge.split.loop.exit ], [ %smin, %6 ]
  %.019.lcssa = phi i32 [ %indvars.le, %.critedge.split.loop.exit ], [ %5, %6 ]
  %13 = sext i32 %.019.lcssa to i64
  %14 = getelementptr inbounds i8, ptr %0, i64 %13
  %15 = load i8, ptr %14, align 1, !tbaa !5
  switch i8 %15, label %19 [
    i8 93, label %16
    i8 47, label %16
    i8 92, label %16
  ]

16:                                               ; preds = %.critedge, %.critedge, %.critedge
  %17 = sext i32 %.019.in.lcssa to i64
  %18 = getelementptr inbounds i8, ptr %0, i64 %17
  br label %19

19:                                               ; preds = %.critedge, %16
  %.0 = phi ptr [ %18, %16 ], [ %0, %.critedge ]
  ret ptr %.0
}

; Function Attrs: mustprogress nofree nounwind willreturn memory(argmem: read)
declare i64 @strlen(ptr nocapture noundef) local_unnamed_addr #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smin.i32(i32, i32) #2

attributes #0 = { nofree nounwind memory(argmem: read) 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 nofree nounwind willreturn memory(argmem: read) "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 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #3 = { nounwind willreturn memory(read) }

!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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


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