; LLVM IR from sunkafei/xcpc-algorithm-templates :: 算法/数据结构/SplayTree.ll (ZN10splay_tree8traverseEi)

; 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"

@_ZN10splay_tree2chE = external dso_local global [110000 x [2 x i32]], align 16
@_ZN10splay_tree3keyE = external dso_local global [110000 x i32], align 16
@.str = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN10splay_tree8traverseEi(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  %3 = load i32, ptr %2, align 4, !tbaa !5
  %4 = icmp ne i32 %3, 0
  br i1 %4, label %5, label %21

5:                                                ; preds = %1
  %6 = load i32, ptr %2, align 4, !tbaa !5
  %7 = sext i32 %6 to i64
  %8 = getelementptr inbounds [110000 x [2 x i32]], ptr @_ZN10splay_tree2chE, i64 0, i64 %7
  %9 = getelementptr inbounds [2 x i32], ptr %8, i64 0, i64 0
  %10 = load i32, ptr %9, align 8, !tbaa !5
  call void @_ZN10splay_tree8traverseEi(i32 noundef %10)
  %11 = load i32, ptr %2, align 4, !tbaa !5
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds [110000 x i32], ptr @_ZN10splay_tree3keyE, i64 0, i64 %12
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %14)
  %16 = load i32, ptr %2, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [110000 x [2 x i32]], ptr @_ZN10splay_tree2chE, i64 0, i64 %17
  %19 = getelementptr inbounds [2 x i32], ptr %18, i64 0, i64 1
  %20 = load i32, ptr %19, align 4, !tbaa !5
  call void @_ZN10splay_tree8traverseEi(i32 noundef %20)
  br label %21

21:                                               ; preds = %5, %1
  ret void
}

declare i32 @printf(ptr noundef, ...) #1

attributes #0 = { mustprogress 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 = { "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" }

!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++ TBAA"}


; 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"

@_ZN10splay_tree2chE = external dso_local local_unnamed_addr global [110000 x [2 x i32]], align 16
@_ZN10splay_tree3keyE = external dso_local local_unnamed_addr global [110000 x i32], align 16
@.str = external hidden unnamed_addr constant [4 x i8], align 1

; Function Attrs: mustprogress nofree nounwind uwtable
define dso_local void @_ZN10splay_tree8traverseEi(i32 noundef %0) local_unnamed_addr #0 {
  %.not4 = icmp eq i32 %0, 0
  br i1 %.not4, label %tailrecurse._crit_edge, label %tailrecurse

tailrecurse:                                      ; preds = %1, %tailrecurse
  %.tr5 = phi i32 [ %9, %tailrecurse ], [ %0, %1 ]
  %2 = sext i32 %.tr5 to i64
  %3 = getelementptr inbounds [110000 x [2 x i32]], ptr @_ZN10splay_tree2chE, i64 0, i64 %2
  %4 = load i32, ptr %3, align 8, !tbaa !5
  tail call void @_ZN10splay_tree8traverseEi(i32 noundef %4)
  %5 = getelementptr inbounds [110000 x i32], ptr @_ZN10splay_tree3keyE, i64 0, i64 %2
  %6 = load i32, ptr %5, align 4, !tbaa !5
  %7 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %6)
  %8 = getelementptr inbounds i8, ptr %3, i64 4
  %9 = load i32, ptr %8, align 4, !tbaa !5
  %.not = icmp eq i32 %9, 0
  br i1 %.not, label %tailrecurse._crit_edge, label %tailrecurse

tailrecurse._crit_edge:                           ; preds = %tailrecurse, %1
  ret void
}

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

attributes #0 = { mustprogress 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" }

!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++ TBAA"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass