; LLVM IR from chr1sc2y/LeetCode_Archiver :: LeetCode/c (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 ptr, align 8
  %5 = alloca i32, align 4
  %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
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store i32 %2, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 0, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 10000, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  store i32 0, ptr %9, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %51, %3
  %12 = load i32, ptr %9, align 4, !tbaa !9
  %13 = load i32, ptr %5, align 4, !tbaa !9
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  br label %54

16:                                               ; preds = %11
  %17 = load i32, ptr %7, align 4, !tbaa !9
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = load i32, ptr %9, align 4, !tbaa !9
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds i32, ptr %18, i64 %20
  %22 = load i32, ptr %21, align 4, !tbaa !9
  %23 = icmp sgt i32 %17, %22
  br i1 %23, label %24, label %26

24:                                               ; preds = %16
  %25 = load i32, ptr %7, align 4, !tbaa !9
  br label %32

26:                                               ; preds = %16
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = load i32, ptr %9, align 4, !tbaa !9
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds i32, ptr %27, i64 %29
  %31 = load i32, ptr %30, align 4, !tbaa !9
  br label %32

32:                                               ; preds = %26, %24
  %33 = phi i32 [ %25, %24 ], [ %31, %26 ]
  store i32 %33, ptr %7, align 4, !tbaa !9
  %34 = load i32, ptr %8, align 4, !tbaa !9
  %35 = load ptr, ptr %4, align 8, !tbaa !5
  %36 = load i32, ptr %9, align 4, !tbaa !9
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds i32, ptr %35, i64 %37
  %39 = load i32, ptr %38, align 4, !tbaa !9
  %40 = icmp slt i32 %34, %39
  br i1 %40, label %41, label %43

41:                                               ; preds = %32
  %42 = load i32, ptr %8, align 4, !tbaa !9
  br label %49

43:                                               ; preds = %32
  %44 = load ptr, ptr %4, align 8, !tbaa !5
  %45 = load i32, ptr %9, align 4, !tbaa !9
  %46 = sext i32 %45 to i64
  %47 = getelementptr inbounds i32, ptr %44, i64 %46
  %48 = load i32, ptr %47, align 4, !tbaa !9
  br label %49

49:                                               ; preds = %43, %41
  %50 = phi i32 [ %42, %41 ], [ %48, %43 ]
  store i32 %50, ptr %8, align 4, !tbaa !9
  br label %51

51:                                               ; preds = %49
  %52 = load i32, ptr %9, align 4, !tbaa !9
  %53 = add nsw i32 %52, 1
  store i32 %53, ptr %9, align 4, !tbaa !9
  br label %11, !llvm.loop !11

54:                                               ; preds = %15
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #2
  %55 = load i32, ptr %7, align 4, !tbaa !9
  %56 = load i32, ptr %8, align 4, !tbaa !9
  %57 = sub nsw i32 %55, %56
  %58 = load i32, ptr %6, align 4, !tbaa !9
  %59 = mul nsw i32 2, %58
  %60 = sub nsw i32 %57, %59
  store i32 %60, ptr %10, align 4, !tbaa !9
  %61 = load i32, ptr %10, align 4, !tbaa !9
  %62 = icmp sgt i32 0, %61
  br i1 %62, label %63, label %64

63:                                               ; preds = %54
  br label %66

64:                                               ; preds = %54
  %65 = load i32, ptr %10, align 4, !tbaa !9
  br label %66

66:                                               ; preds = %64, %63
  %67 = phi i32 [ 0, %63 ], [ %65, %64 ]
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  ret i32 %67
}

; 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 = icmp sgt i32 %1, 0
  br i1 %4, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %3
  %wide.trip.count = zext nneg i32 %1 to i64
  %min.iters.check = icmp ult i32 %1, 8
  br i1 %min.iters.check, label %.lr.ph.preheader35, label %vector.ph

.lr.ph.preheader35:                               ; preds = %middle.block, %.lr.ph.preheader
  %indvars.iv.ph = phi i64 [ 0, %.lr.ph.preheader ], [ %n.vec, %middle.block ]
  %.026.ph = phi i32 [ 0, %.lr.ph.preheader ], [ %12, %middle.block ]
  %.02024.ph = phi i32 [ 10000, %.lr.ph.preheader ], [ %13, %middle.block ]
  br label %.lr.ph

vector.ph:                                        ; preds = %.lr.ph.preheader
  %n.vec = and i64 %wide.trip.count, 2147483640
  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> [ zeroinitializer, %vector.ph ], [ %7, %vector.body ]
  %vec.phi29 = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %8, %vector.body ]
  %vec.phi30 = phi <4 x i32> [ <i32 10000, i32 10000, i32 10000, i32 10000>, %vector.ph ], [ %9, %vector.body ]
  %vec.phi31 = phi <4 x i32> [ <i32 10000, i32 10000, i32 10000, i32 10000>, %vector.ph ], [ %10, %vector.body ]
  %5 = getelementptr inbounds i32, ptr %0, i64 %index
  %6 = getelementptr inbounds i8, ptr %5, i64 16
  %wide.load = load <4 x i32>, ptr %5, align 4, !tbaa !5
  %wide.load32 = load <4 x i32>, ptr %6, align 4, !tbaa !5
  %7 = tail call <4 x i32> @llvm.smax.v4i32(<4 x i32> %vec.phi, <4 x i32> %wide.load)
  %8 = tail call <4 x i32> @llvm.smax.v4i32(<4 x i32> %vec.phi29, <4 x i32> %wide.load32)
  %9 = tail call <4 x i32> @llvm.smin.v4i32(<4 x i32> %vec.phi30, <4 x i32> %wide.load)
  %10 = tail call <4 x i32> @llvm.smin.v4i32(<4 x i32> %vec.phi31, <4 x i32> %wide.load32)
  %index.next = add nuw i64 %index, 8
  %11 = icmp eq i64 %index.next, %n.vec
  br i1 %11, label %middle.block, label %vector.body, !llvm.loop !9

middle.block:                                     ; preds = %vector.body
  %rdx.minmax = tail call <4 x i32> @llvm.smax.v4i32(<4 x i32> %7, <4 x i32> %8)
  %12 = tail call i32 @llvm.vector.reduce.smax.v4i32(<4 x i32> %rdx.minmax)
  %rdx.minmax33 = tail call <4 x i32> @llvm.smin.v4i32(<4 x i32> %9, <4 x i32> %10)
  %13 = tail call i32 @llvm.vector.reduce.smin.v4i32(<4 x i32> %rdx.minmax33)
  %cmp.n = icmp eq i64 %n.vec, %wide.trip.count
  br i1 %cmp.n, label %._crit_edge, label %.lr.ph.preheader35

._crit_edge:                                      ; preds = %.lr.ph, %middle.block, %3
  %.020.lcssa = phi i32 [ 10000, %3 ], [ %13, %middle.block ], [ %18, %.lr.ph ]
  %.0.lcssa = phi i32 [ 0, %3 ], [ %12, %middle.block ], [ %.0., %.lr.ph ]
  %.neg = mul i32 %2, -2
  %.neg23 = sub i32 %.neg, %.020.lcssa
  %14 = add i32 %.neg23, %.0.lcssa
  %15 = tail call i32 @llvm.smax.i32(i32 %14, i32 0)
  ret i32 %15

.lr.ph:                                           ; preds = %.lr.ph.preheader35, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ %indvars.iv.ph, %.lr.ph.preheader35 ]
  %.026 = phi i32 [ %.0., %.lr.ph ], [ %.026.ph, %.lr.ph.preheader35 ]
  %.02024 = phi i32 [ %18, %.lr.ph ], [ %.02024.ph, %.lr.ph.preheader35 ]
  %16 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  %17 = load i32, ptr %16, align 4, !tbaa !5
  %.0. = tail call i32 @llvm.smax.i32(i32 %.026, i32 %17)
  %18 = tail call i32 @llvm.smin.i32(i32 %.02024, i32 %17)
  %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.smax.i32(i32, i32) #1

; 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 <4 x i32> @llvm.smax.v4i32(<4 x i32>, <4 x 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 i32 @llvm.vector.reduce.smax.v4i32(<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

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