; LLVM IR from Mohammed-Shoaib/Coding-Problems :: Gulf Programming Contest/2018/keyboard/keyboard.ll (Z5validiiii)

; 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: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z5validiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) #0 {
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  store i32 %0, ptr %5, align 4, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !5
  store i32 %3, ptr %8, align 4, !tbaa !5
  %9 = load i32, ptr %5, align 4, !tbaa !5
  %10 = load i32, ptr %7, align 4, !tbaa !5
  %11 = add nsw i32 %9, %10
  %12 = icmp sge i32 %11, 0
  br i1 %12, label %13, label %30

13:                                               ; preds = %4
  %14 = load i32, ptr %5, align 4, !tbaa !5
  %15 = load i32, ptr %7, align 4, !tbaa !5
  %16 = add nsw i32 %14, %15
  %17 = icmp sle i32 %16, 3
  br i1 %17, label %18, label %30

18:                                               ; preds = %13
  %19 = load i32, ptr %6, align 4, !tbaa !5
  %20 = load i32, ptr %8, align 4, !tbaa !5
  %21 = add nsw i32 %19, %20
  %22 = icmp sge i32 %21, 0
  br i1 %22, label %23, label %28

23:                                               ; preds = %18
  %24 = load i32, ptr %6, align 4, !tbaa !5
  %25 = load i32, ptr %8, align 4, !tbaa !5
  %26 = add nsw i32 %24, %25
  %27 = icmp sle i32 %26, 2
  br label %28

28:                                               ; preds = %23, %18
  %29 = phi i1 [ false, %18 ], [ %27, %23 ]
  br label %30

30:                                               ; preds = %28, %13, %4
  %31 = phi i1 [ false, %13 ], [ false, %4 ], [ %29, %28 ]
  ret i1 %31
}

attributes #0 = { mustprogress 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" }

!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"

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local noundef zeroext i1 @_Z5validiiii(i32 noundef %0, i32 noundef %1, i32 noundef %2, i32 noundef %3) local_unnamed_addr #0 {
  %5 = add nsw i32 %2, %0
  %or.cond = icmp ult i32 %5, 4
  %6 = add nsw i32 %3, %1
  %7 = icmp ult i32 %6, 3
  %8 = select i1 %or.cond, i1 %7, i1 false
  ret i1 %8
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(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" }

!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)"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass