; LLVM IR from ravireddy07/cpp-book :: src/Code-Chef/DEC2020-Long/EVENPSUM.ll (Z4testv)

; 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"

@.str = external hidden unnamed_addr constant [9 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z4testv() #0 {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %1) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #3
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef @.str, ptr noundef %1, ptr noundef %2)
  %4 = load i64, ptr %1, align 8, !tbaa !5
  %5 = icmp eq i64 %4, 1
  br i1 %5, label %6, label %11

6:                                                ; preds = %0
  %7 = load i64, ptr %2, align 8, !tbaa !5
  %8 = icmp eq i64 %7, 1
  br i1 %8, label %9, label %11

9:                                                ; preds = %6
  %10 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  br label %33

11:                                               ; preds = %6, %0
  %12 = load i64, ptr %1, align 8, !tbaa !5
  %13 = srem i64 %12, 2
  %14 = icmp ne i64 %13, 0
  br i1 %14, label %15, label %26

15:                                               ; preds = %11
  %16 = load i64, ptr %2, align 8, !tbaa !5
  %17 = srem i64 %16, 2
  %18 = icmp ne i64 %17, 0
  br i1 %18, label %19, label %26

19:                                               ; preds = %15
  %20 = load i64, ptr %1, align 8, !tbaa !5
  %21 = load i64, ptr %2, align 8, !tbaa !5
  %22 = mul nsw i64 %20, %21
  %23 = sdiv i64 %22, 2
  %24 = add nsw i64 %23, 1
  %25 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i64 noundef %24)
  br label %32

26:                                               ; preds = %15, %11
  %27 = load i64, ptr %1, align 8, !tbaa !5
  %28 = load i64, ptr %2, align 8, !tbaa !5
  %29 = mul nsw i64 %27, %28
  %30 = sdiv i64 %29, 2
  %31 = call i32 (ptr, ...) @printf(ptr noundef @.str.2, i64 noundef %30)
  br label %32

32:                                               ; preds = %26, %19
  br label %33

33:                                               ; preds = %32, %9
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %1) #3
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare i32 @__isoc99_scanf(ptr noundef, ...) #2

declare i32 @printf(ptr noundef, ...) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 #3 = { 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 = !{!"long long", !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"

@.str = external hidden unnamed_addr constant [9 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [6 x i8], align 1

; Function Attrs: mustprogress nofree nounwind uwtable
define dso_local void @_Z4testv() local_unnamed_addr #0 {
  %1 = alloca i64, align 8
  %2 = alloca i64, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #3
  %3 = call i32 (ptr, ...) @__isoc99_scanf(ptr noundef nonnull @.str, ptr noundef nonnull %1, ptr noundef nonnull %2)
  %4 = load i64, ptr %1, align 8, !tbaa !5
  %5 = icmp eq i64 %4, 1
  %6 = load i64, ptr %2, align 8
  %7 = icmp eq i64 %6, 1
  %or.cond = select i1 %5, i1 %7, i1 false
  br i1 %or.cond, label %8, label %10

8:                                                ; preds = %0
  %9 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  br label %20

10:                                               ; preds = %0
  %11 = and i64 %4, 1
  %.not = icmp eq i64 %11, 0
  %12 = and i64 %6, 1
  %.not2 = icmp eq i64 %12, 0
  %or.cond3 = select i1 %.not, i1 true, i1 %.not2
  %13 = mul nsw i64 %6, %4
  %14 = sdiv i64 %13, 2
  br i1 %or.cond3, label %18, label %15

15:                                               ; preds = %10
  %16 = add nsw i64 %14, 1
  %17 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i64 noundef %16)
  br label %20

18:                                               ; preds = %10
  %19 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2, i64 noundef %14)
  br label %20

20:                                               ; preds = %15, %18, %8
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #3
  ret void
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nofree nounwind
declare noundef i32 @__isoc99_scanf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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" }
attributes #3 = { 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 = !{!"long long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


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