; LLVM IR from DimitrisJim/leetcode_solutions :: C/Algorithms (1947)

; 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: nounwind uwtable
define dso_local i32 @minTimeToType(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  store i32 97, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %7

7:                                                ; preds = %38, %1
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = load i8, ptr %8, align 1, !tbaa !11
  %10 = icmp ne i8 %9, 0
  br i1 %10, label %11, label %44

11:                                               ; preds = %7
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  %12 = load ptr, ptr %2, align 8, !tbaa !5
  %13 = getelementptr inbounds i8, ptr %12, i32 1
  store ptr %13, ptr %2, align 8, !tbaa !5
  %14 = load i8, ptr %12, align 1, !tbaa !11
  %15 = sext i8 %14 to i32
  store i32 %15, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = load i32, ptr %3, align 4, !tbaa !9
  %18 = sub nsw i32 %16, %17
  %19 = icmp sgt i32 %18, 0
  br i1 %19, label %20, label %24

20:                                               ; preds = %11
  %21 = load i32, ptr %5, align 4, !tbaa !9
  %22 = load i32, ptr %3, align 4, !tbaa !9
  %23 = sub nsw i32 %21, %22
  br label %29

24:                                               ; preds = %11
  %25 = load i32, ptr %5, align 4, !tbaa !9
  %26 = load i32, ptr %3, align 4, !tbaa !9
  %27 = sub nsw i32 %25, %26
  %28 = sub nsw i32 0, %27
  br label %29

29:                                               ; preds = %24, %20
  %30 = phi i32 [ %23, %20 ], [ %28, %24 ]
  store i32 %30, ptr %6, align 4, !tbaa !9
  %31 = load i32, ptr %6, align 4, !tbaa !9
  %32 = icmp sgt i32 %31, 13
  br i1 %32, label %33, label %36

33:                                               ; preds = %29
  %34 = load i32, ptr %6, align 4, !tbaa !9
  %35 = sub nsw i32 26, %34
  br label %38

36:                                               ; preds = %29
  %37 = load i32, ptr %6, align 4, !tbaa !9
  br label %38

38:                                               ; preds = %36, %33
  %39 = phi i32 [ %35, %33 ], [ %37, %36 ]
  %40 = add nsw i32 %39, 1
  %41 = load i32, ptr %4, align 4, !tbaa !9
  %42 = add nsw i32 %41, %40
  store i32 %42, ptr %4, align 4, !tbaa !9
  %43 = load i32, ptr %5, align 4, !tbaa !9
  store i32 %43, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %7, !llvm.loop !12

44:                                               ; preds = %7
  %45 = load i32, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret i32 %45
}

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

; 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 }

!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 norecurse nosync nounwind memory(read, inaccessiblemem: none) uwtable
define dso_local i32 @minTimeToType(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = load i8, ptr %0, align 1, !tbaa !5
  %.not17 = icmp eq i8 %2, 0
  br i1 %.not17, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1, %.lr.ph
  %3 = phi i8 [ %13, %.lr.ph ], [ %2, %1 ]
  %.020 = phi ptr [ %4, %.lr.ph ], [ %0, %1 ]
  %.01319 = phi i32 [ %5, %.lr.ph ], [ 97, %1 ]
  %.01418 = phi i32 [ %12, %.lr.ph ], [ 0, %1 ]
  %4 = getelementptr inbounds i8, ptr %.020, i64 1
  %5 = sext i8 %3 to i32
  %6 = sub nsw i32 %5, %.01319
  %7 = tail call i32 @llvm.abs.i32(i32 %6, i1 true)
  %8 = icmp ugt i32 %7, 13
  %9 = sub nsw i32 26, %7
  %10 = select i1 %8, i32 %9, i32 %7
  %11 = add i32 %.01418, 1
  %12 = add i32 %11, %10
  %13 = load i8, ptr %4, align 1, !tbaa !5
  %.not = icmp eq i8 %13, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !8

._crit_edge:                                      ; preds = %.lr.ph, %1
  %.014.lcssa = phi i32 [ 0, %1 ], [ %12, %.lr.ph ]
  ret i32 %.014.lcssa
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.abs.i32(i32, i1 immarg) #1

attributes #0 = { nofree norecurse nosync nounwind memory(read, inaccessiblemem: 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" }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass