; LLVM IR from kazunetakahashi/atcoder :: 2017/0304_RCO-2017-qual/A.ll (Z5validii)

; 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"

@H = external dso_local global i32, align 4
@W = external dso_local global i32, align 4
@field = external dso_local global [50 x [50 x i32]], align 16
@used = external dso_local global [50 x [50 x i8]], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z5validii(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !5
  %5 = load i32, ptr %3, align 4, !tbaa !5
  %6 = icmp sle i32 0, %5
  br i1 %6, label %7, label %37

7:                                                ; preds = %2
  %8 = load i32, ptr %3, align 4, !tbaa !5
  %9 = load i32, ptr @H, align 4, !tbaa !5
  %10 = icmp slt i32 %8, %9
  br i1 %10, label %11, label %37

11:                                               ; preds = %7
  %12 = load i32, ptr %4, align 4, !tbaa !5
  %13 = icmp sle i32 0, %12
  br i1 %13, label %14, label %37

14:                                               ; preds = %11
  %15 = load i32, ptr %4, align 4, !tbaa !5
  %16 = load i32, ptr @W, align 4, !tbaa !5
  %17 = icmp slt i32 %15, %16
  br i1 %17, label %18, label %37

18:                                               ; preds = %14
  %19 = load i32, ptr %3, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [50 x [50 x i32]], ptr @field, i64 0, i64 %20
  %22 = load i32, ptr %4, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [50 x i32], ptr %21, i64 0, i64 %23
  %25 = load i32, ptr %24, align 4, !tbaa !5
  %26 = icmp sgt i32 %25, 0
  br i1 %26, label %27, label %37

27:                                               ; preds = %18
  %28 = load i32, ptr %3, align 4, !tbaa !5
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [50 x [50 x i8]], ptr @used, i64 0, i64 %29
  %31 = load i32, ptr %4, align 4, !tbaa !5
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds [50 x i8], ptr %30, i64 0, i64 %32
  %34 = load i8, ptr %33, align 1, !tbaa !9, !range !11, !noundef !12
  %35 = trunc i8 %34 to i1
  %36 = xor i1 %35, true
  br label %37

37:                                               ; preds = %27, %18, %14, %11, %7, %2
  %38 = phi i1 [ false, %18 ], [ false, %14 ], [ false, %11 ], [ false, %7 ], [ false, %2 ], [ %36, %27 ]
  ret i1 %38
}

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"}
!9 = !{!10, !10, i64 0}
!10 = !{!"bool", !7, i64 0}
!11 = !{i8 0, i8 2}
!12 = !{}


; 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"

@H = external dso_local local_unnamed_addr global i32, align 4
@W = external dso_local local_unnamed_addr global i32, align 4
@field = external dso_local local_unnamed_addr global [50 x [50 x i32]], align 16
@used = external dso_local local_unnamed_addr global [50 x [50 x i8]], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: none, inaccessiblemem: none) uwtable
define dso_local noundef zeroext i1 @_Z5validii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %0, -1
  br i1 %3, label %4, label %21

4:                                                ; preds = %2
  %5 = load i32, ptr @H, align 4, !tbaa !5
  %6 = icmp sgt i32 %5, %0
  %7 = icmp sgt i32 %1, -1
  %or.cond = and i1 %7, %6
  %8 = load i32, ptr @W, align 4
  %9 = icmp sgt i32 %8, %1
  %or.cond11 = select i1 %or.cond, i1 %9, i1 false
  br i1 %or.cond11, label %10, label %21

10:                                               ; preds = %4
  %11 = zext nneg i32 %0 to i64
  %12 = zext nneg i32 %1 to i64
  %13 = getelementptr inbounds [50 x [50 x i32]], ptr @field, i64 0, i64 %11, i64 %12
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %15 = icmp sgt i32 %14, 0
  br i1 %15, label %16, label %21

16:                                               ; preds = %10
  %17 = getelementptr inbounds [50 x [50 x i8]], ptr @used, i64 0, i64 %11, i64 %12
  %18 = load i8, ptr %17, align 1, !tbaa !9, !range !11, !noundef !12
  %19 = trunc nuw i8 %18 to i1
  %20 = xor i1 %19, true
  br label %21

21:                                               ; preds = %16, %10, %4, %2
  %22 = phi i1 [ false, %10 ], [ false, %4 ], [ false, %2 ], [ %20, %16 ]
  ret i1 %22
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: none, 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" }

!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"}
!9 = !{!10, !10, i64 0}
!10 = !{!"bool", !7, i64 0}
!11 = !{i8 0, i8 2}
!12 = !{}


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