; LLVM IR from VastoLorde95/Competitive-Programming :: SPOJ/Random/INCDSEQ/inc.ll (Z3getPii)

; 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"

@MOD = external dso_local global i32, align 4
@f = external dso_local global [52 x [10001 x i32]], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z3getPii(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %7 = load ptr, ptr %4, align 8, !tbaa !5
  %8 = icmp eq ptr %7, @f
  br i1 %8, label %9, label %10

9:                                                ; preds = %2
  store i32 1, ptr %3, align 4
  br label %34

10:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %14, %10
  %12 = load i32, ptr %5, align 4, !tbaa !9
  %13 = icmp ne i32 %12, 0
  br i1 %13, label %14, label %32

14:                                               ; preds = %11
  %15 = load i32, ptr %6, align 4, !tbaa !9
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = load i32, ptr %5, align 4, !tbaa !9
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds i32, ptr %16, i64 %18
  %20 = load i32, ptr %19, align 4, !tbaa !9
  %21 = add nsw i32 %15, %20
  %22 = load i32, ptr @MOD, align 4, !tbaa !9
  %23 = add nsw i32 %21, %22
  %24 = load i32, ptr @MOD, align 4, !tbaa !9
  %25 = srem i32 %23, %24
  store i32 %25, ptr %6, align 4, !tbaa !9
  %26 = load i32, ptr %5, align 4, !tbaa !9
  %27 = load i32, ptr %5, align 4, !tbaa !9
  %28 = sub nsw i32 0, %27
  %29 = and i32 %26, %28
  %30 = load i32, ptr %5, align 4, !tbaa !9
  %31 = sub nsw i32 %30, %29
  store i32 %31, ptr %5, align 4, !tbaa !9
  br label %11, !llvm.loop !11

32:                                               ; preds = %11
  %33 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %33, ptr %3, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %34

34:                                               ; preds = %32, %9
  %35 = load i32, ptr %3, align 4
  ret i32 %35
}

; 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 = { 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" }
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++ 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"

@MOD = external dso_local local_unnamed_addr global i32, align 4
@f = external dso_local global [52 x [10001 x i32]], align 16

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read, inaccessiblemem: none) uwtable
define dso_local noundef i32 @_Z3getPii(ptr noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp eq ptr %0, @f
  br i1 %3, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %2
  %.not13 = icmp eq i32 %1, 0
  br i1 %.not13, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader
  %4 = load i32, ptr @MOD, align 4, !tbaa !5
  br label %5

5:                                                ; preds = %.lr.ph, %5
  %.015 = phi i32 [ 0, %.lr.ph ], [ %11, %5 ]
  %.0914 = phi i32 [ %1, %.lr.ph ], [ %12, %5 ]
  %6 = sext i32 %.0914 to i64
  %7 = getelementptr inbounds i32, ptr %0, i64 %6
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %9 = add nsw i32 %8, %.015
  %10 = add nsw i32 %9, %4
  %11 = srem i32 %10, %4
  %.not12 = add i32 %.0914, -1
  %12 = and i32 %.not12, %.0914
  %.not = icmp eq i32 %12, 0
  br i1 %.not, label %.loopexit, label %5, !llvm.loop !9

.loopexit:                                        ; preds = %5, %.preheader, %2
  %.010 = phi i32 [ 1, %2 ], [ 0, %.preheader ], [ %11, %5 ]
  ret i32 %.010
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(read, 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass