; LLVM IR from DimitrisJim/leetcode_solutions :: C/Algorithms (908)

; 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 @smallestRangeI(ptr noundef %0, i32 noundef %1, i32 noundef %2) #0 {
  %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 i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca i32, align 4
  %13 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = getelementptr inbounds i32, ptr %14, i64 0
  %16 = load i32, ptr %15, align 4, !tbaa !9
  store i32 %16, ptr %9, align 4, !tbaa !9
  store i32 %16, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #2
  store i32 1, ptr %10, align 4, !tbaa !9
  br label %17

17:                                               ; preds = %40, %3
  %18 = load i32, ptr %10, align 4, !tbaa !9
  %19 = load i32, ptr %6, align 4, !tbaa !9
  %20 = icmp slt i32 %18, %19
  br i1 %20, label %22, label %21

21:                                               ; preds = %17
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #2
  br label %43

22:                                               ; preds = %17
  call void @llvm.lifetime.start.p0(i64 4, ptr %11) #2
  %23 = load ptr, ptr %5, align 8, !tbaa !5
  %24 = load i32, ptr %10, align 4, !tbaa !9
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds i32, ptr %23, i64 %25
  %27 = load i32, ptr %26, align 4, !tbaa !9
  store i32 %27, ptr %11, align 4, !tbaa !9
  %28 = load i32, ptr %11, align 4, !tbaa !9
  %29 = load i32, ptr %8, align 4, !tbaa !9
  %30 = icmp slt i32 %28, %29
  br i1 %30, label %31, label %33

31:                                               ; preds = %22
  %32 = load i32, ptr %11, align 4, !tbaa !9
  store i32 %32, ptr %8, align 4, !tbaa !9
  br label %33

33:                                               ; preds = %31, %22
  %34 = load i32, ptr %11, align 4, !tbaa !9
  %35 = load i32, ptr %9, align 4, !tbaa !9
  %36 = icmp sgt i32 %34, %35
  br i1 %36, label %37, label %39

37:                                               ; preds = %33
  %38 = load i32, ptr %11, align 4, !tbaa !9
  store i32 %38, ptr %9, align 4, !tbaa !9
  br label %39

39:                                               ; preds = %37, %33
  call void @llvm.lifetime.end.p0(i64 4, ptr %11) #2
  br label %40

40:                                               ; preds = %39
  %41 = load i32, ptr %10, align 4, !tbaa !9
  %42 = add nsw i32 %41, 1
  store i32 %42, ptr %10, align 4, !tbaa !9
  br label %17, !llvm.loop !11

43:                                               ; preds = %21
  call void @llvm.lifetime.start.p0(i64 4, ptr %12) #2
  %44 = load i32, ptr %9, align 4, !tbaa !9
  %45 = load i32, ptr %7, align 4, !tbaa !9
  %46 = sub nsw i32 %44, %45
  %47 = load i32, ptr %8, align 4, !tbaa !9
  %48 = sub nsw i32 %46, %47
  store i32 %48, ptr %12, align 4, !tbaa !9
  %49 = load i32, ptr %7, align 4, !tbaa !9
  %50 = sub nsw i32 0, %49
  %51 = load i32, ptr %12, align 4, !tbaa !9
  %52 = icmp slt i32 %50, %51
  br i1 %52, label %53, label %58

53:                                               ; preds = %43
  %54 = load i32, ptr %12, align 4, !tbaa !9
  %55 = load i32, ptr %7, align 4, !tbaa !9
  %56 = icmp slt i32 %54, %55
  br i1 %56, label %57, label %58

57:                                               ; preds = %53
  store i32 0, ptr %4, align 4
  store i32 1, ptr %13, align 4
  br label %71

58:                                               ; preds = %53, %43
  %59 = load i32, ptr %12, align 4, !tbaa !9
  %60 = icmp sgt i32 %59, 0
  br i1 %60, label %61, label %65

61:                                               ; preds = %58
  %62 = load i32, ptr %12, align 4, !tbaa !9
  %63 = load i32, ptr %7, align 4, !tbaa !9
  %64 = sub nsw i32 %62, %63
  br label %69

65:                                               ; preds = %58
  %66 = load i32, ptr %12, align 4, !tbaa !9
  %67 = load i32, ptr %7, align 4, !tbaa !9
  %68 = add nsw i32 %66, %67
  br label %69

69:                                               ; preds = %65, %61
  %70 = phi i32 [ %64, %61 ], [ %68, %65 ]
  store i32 %70, ptr %4, align 4
  store i32 1, ptr %13, align 4
  br label %71

71:                                               ; preds = %69, %57
  call void @llvm.lifetime.end.p0(i64 4, ptr %12) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  %72 = load i32, ptr %4, align 4
  ret i32 %72
}

; 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 = distinct !{!11, !12}
!12 = !{!"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(argmem: read) uwtable
define dso_local i32 @smallestRangeI(ptr nocapture noundef readonly %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = load i32, ptr %0, align 4, !tbaa !5
  %5 = icmp sgt i32 %1, 1
  br i1 %5, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %3
  %wide.trip.count = zext nneg i32 %1 to i64
  %6 = add nsw i64 %wide.trip.count, -1
  %min.iters.check = icmp ult i32 %1, 9
  br i1 %min.iters.check, label %.lr.ph.preheader45, label %vector.ph

.lr.ph.preheader45:                               ; preds = %middle.block, %.lr.ph.preheader
  %indvars.iv.ph = phi i64 [ 1, %.lr.ph.preheader ], [ %ind.end, %middle.block ]
  %.02434.ph = phi i32 [ %4, %.lr.ph.preheader ], [ %14, %middle.block ]
  %.02632.ph = phi i32 [ %4, %.lr.ph.preheader ], [ %15, %middle.block ]
  br label %.lr.ph

vector.ph:                                        ; preds = %.lr.ph.preheader
  %n.vec = and i64 %6, -8
  %ind.end = or disjoint i64 %n.vec, 1
  %minmax.ident.splatinsert = insertelement <4 x i32> poison, i32 %4, i64 0
  %minmax.ident.splat = shufflevector <4 x i32> %minmax.ident.splatinsert, <4 x i32> poison, <4 x i32> zeroinitializer
  %minmax.ident.splatinsert40 = insertelement <4 x i32> poison, i32 %4, i64 0
  %minmax.ident.splat41 = shufflevector <4 x i32> %minmax.ident.splatinsert40, <4 x i32> poison, <4 x i32> zeroinitializer
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %vec.phi = phi <4 x i32> [ %minmax.ident.splat, %vector.ph ], [ %9, %vector.body ]
  %vec.phi37 = phi <4 x i32> [ %minmax.ident.splat, %vector.ph ], [ %10, %vector.body ]
  %vec.phi38 = phi <4 x i32> [ %minmax.ident.splat41, %vector.ph ], [ %11, %vector.body ]
  %vec.phi39 = phi <4 x i32> [ %minmax.ident.splat41, %vector.ph ], [ %12, %vector.body ]
  %offset.idx = or disjoint i64 %index, 1
  %7 = getelementptr inbounds i32, ptr %0, i64 %offset.idx
  %8 = getelementptr inbounds i8, ptr %7, i64 16
  %wide.load = load <4 x i32>, ptr %7, align 4, !tbaa !5
  %wide.load42 = load <4 x i32>, ptr %8, align 4, !tbaa !5
  %9 = tail call <4 x i32> @llvm.smin.v4i32(<4 x i32> %wide.load, <4 x i32> %vec.phi)
  %10 = tail call <4 x i32> @llvm.smin.v4i32(<4 x i32> %wide.load42, <4 x i32> %vec.phi37)
  %11 = tail call <4 x i32> @llvm.smax.v4i32(<4 x i32> %wide.load, <4 x i32> %vec.phi38)
  %12 = tail call <4 x i32> @llvm.smax.v4i32(<4 x i32> %wide.load42, <4 x i32> %vec.phi39)
  %index.next = add nuw i64 %index, 8
  %13 = icmp eq i64 %index.next, %n.vec
  br i1 %13, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %rdx.minmax = tail call <4 x i32> @llvm.smin.v4i32(<4 x i32> %9, <4 x i32> %10)
  %14 = tail call i32 @llvm.vector.reduce.smin.v4i32(<4 x i32> %rdx.minmax)
  %rdx.minmax43 = tail call <4 x i32> @llvm.smax.v4i32(<4 x i32> %11, <4 x i32> %12)
  %15 = tail call i32 @llvm.vector.reduce.smax.v4i32(<4 x i32> %rdx.minmax43)
  %cmp.n = icmp eq i64 %6, %n.vec
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader45

._crit_edge:                                      ; preds = %.lr.ph, %middle.block, %3
  %.026.lcssa = phi i32 [ %4, %3 ], [ %15, %middle.block ], [ %.127, %.lr.ph ]
  %.024.lcssa = phi i32 [ %4, %3 ], [ %14, %middle.block ], [ %spec.select, %.lr.ph ]
  %16 = sub i32 0, %2
  %17 = add i32 %.024.lcssa, %2
  %18 = sub i32 %.026.lcssa, %17
  %19 = icmp sgt i32 %18, %16
  %20 = icmp slt i32 %18, %2
  %or.cond = and i1 %19, %20
  %21 = icmp sgt i32 %18, 0
  %.p = select i1 %21, i32 %16, i32 %2
  %22 = add i32 %.p, %18
  %.0 = select i1 %or.cond, i32 0, i32 %22
  ret i32 %.0

.lr.ph:                                           ; preds = %.lr.ph.preheader45, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ %indvars.iv.ph, %.lr.ph.preheader45 ]
  %.02434 = phi i32 [ %spec.select, %.lr.ph ], [ %.02434.ph, %.lr.ph.preheader45 ]
  %.02632 = phi i32 [ %.127, %.lr.ph ], [ %.02632.ph, %.lr.ph.preheader45 ]
  %23 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  %24 = load i32, ptr %23, align 4, !tbaa !5
  %spec.select = tail call i32 @llvm.smin.i32(i32 %24, i32 %.02434)
  %.127 = tail call i32 @llvm.smax.i32(i32 %24, i32 %.02632)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !13
}

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

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

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare <4 x i32> @llvm.smin.v4i32(<4 x i32>, <4 x i32>) #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare <4 x i32> @llvm.smax.v4i32(<4 x i32>, <4 x i32>) #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.vector.reduce.smin.v4i32(<4 x i32>) #1

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.vector.reduce.smax.v4i32(<4 x i32>) #1

attributes #0 = { nofree norecurse nosync 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 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10, !11, !12}
!10 = !{!"llvm.loop.mustprogress"}
!11 = !{!"llvm.loop.isvectorized", i32 1}
!12 = !{!"llvm.loop.unroll.runtime.disable"}
!13 = distinct !{!13, !10, !12, !11}


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