; LLVM IR from brpapa/algorithms :: solutions/spoj/LABYR1.ll (Z7isValidii)

; 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"

@grid = external dso_local global [1001 x [1001 x i8]], align 16
@R = external dso_local global i32, align 4
@C = external dso_local global i32, align 4

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef zeroext i1 @_Z7isValidii(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i1, align 1
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  %6 = load i32, ptr %4, align 4, !tbaa !5
  %7 = icmp slt i32 %6, 0
  br i1 %7, label %19, label %8

8:                                                ; preds = %2
  %9 = load i32, ptr %4, align 4, !tbaa !5
  %10 = load i32, ptr @R, align 4, !tbaa !5
  %11 = icmp sge i32 %9, %10
  br i1 %11, label %19, label %12

12:                                               ; preds = %8
  %13 = load i32, ptr %5, align 4, !tbaa !5
  %14 = icmp slt i32 %13, 0
  br i1 %14, label %19, label %15

15:                                               ; preds = %12
  %16 = load i32, ptr %5, align 4, !tbaa !5
  %17 = load i32, ptr @C, align 4, !tbaa !5
  %18 = icmp sge i32 %16, %17
  br i1 %18, label %19, label %20

19:                                               ; preds = %15, %12, %8, %2
  store i1 false, ptr %3, align 1
  br label %32

20:                                               ; preds = %15
  %21 = load i32, ptr %4, align 4, !tbaa !5
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds [1001 x [1001 x i8]], ptr @grid, i64 0, i64 %22
  %24 = load i32, ptr %5, align 4, !tbaa !5
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds [1001 x i8], ptr %23, i64 0, i64 %25
  %27 = load i8, ptr %26, align 1, !tbaa !9
  %28 = sext i8 %27 to i32
  %29 = icmp eq i32 %28, 35
  br i1 %29, label %30, label %31

30:                                               ; preds = %20
  store i1 false, ptr %3, align 1
  br label %32

31:                                               ; preds = %20
  store i1 true, ptr %3, align 1
  br label %32

32:                                               ; preds = %31, %30, %19
  %33 = load i1, ptr %3, align 1
  ret i1 %33
}

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 = !{!7, !7, i64 0}


; 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"

@grid = external dso_local local_unnamed_addr global [1001 x [1001 x i8]], align 16
@R = external dso_local local_unnamed_addr global i32, align 4
@C = external dso_local local_unnamed_addr global i32, align 4

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read, argmem: none, inaccessiblemem: none) uwtable
define dso_local noundef zeroext i1 @_Z7isValidii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp slt i32 %0, 0
  br i1 %3, label %15, label %4

4:                                                ; preds = %2
  %5 = load i32, ptr @R, align 4, !tbaa !5
  %6 = icmp sgt i32 %5, %0
  %7 = icmp sgt i32 %1, -1
  %or.cond.not12 = and i1 %7, %6
  %8 = load i32, ptr @C, align 4
  %.not = icmp sgt i32 %8, %1
  %or.cond9 = select i1 %or.cond.not12, i1 %.not, i1 false
  br i1 %or.cond9, label %9, label %15

9:                                                ; preds = %4
  %10 = zext nneg i32 %0 to i64
  %11 = zext nneg i32 %1 to i64
  %12 = getelementptr inbounds [1001 x [1001 x i8]], ptr @grid, i64 0, i64 %10, i64 %11
  %13 = load i8, ptr %12, align 1, !tbaa !9
  %14 = icmp ne i8 %13, 35
  br label %15

15:                                               ; preds = %9, %2, %4
  %.0 = phi i1 [ false, %4 ], [ false, %2 ], [ %14, %9 ]
  ret i1 %.0
}

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 = !{!7, !7, i64 0}


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