; LLVM IR from LeoVen/C-Macro-Collections :: examples (sieve)

; 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"

%struct.bitset = type { ptr, i64, i64, i32, ptr }

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @cmc_bidx_to_widx(i64 noundef) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local zeroext i1 @bs_impl_resize(ptr noundef, i64 noundef, i1 noundef zeroext) #2

; Function Attrs: nounwind uwtable
define dso_local zeroext i1 @bs_flip(ptr noundef %0, i64 noundef %1) #2 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i32, align 4
  %7 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = load i64, ptr %5, align 8, !tbaa !9
  %10 = add i64 %9, 1
  %11 = call zeroext i1 @bs_impl_resize(ptr noundef %8, i64 noundef %10, i1 noundef zeroext false)
  br i1 %11, label %13, label %12

12:                                               ; preds = %2
  store i1 false, ptr %3, align 1
  br label %29

13:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  store i32 32, ptr %6, align 4, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %14 = load i64, ptr %5, align 8, !tbaa !9
  %15 = call i64 @cmc_bidx_to_widx(i64 noundef %14)
  store i64 %15, ptr %7, align 8, !tbaa !9
  %16 = load i64, ptr %5, align 8, !tbaa !9
  %17 = urem i64 %16, 32
  %18 = trunc i64 %17 to i32
  %19 = shl i32 1, %18
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.bitset, ptr %20, i32 0, i32 0
  %22 = load ptr, ptr %21, align 8, !tbaa !13
  %23 = load i64, ptr %7, align 8, !tbaa !9
  %24 = getelementptr inbounds i32, ptr %22, i64 %23
  %25 = load i32, ptr %24, align 4, !tbaa !11
  %26 = xor i32 %25, %19
  store i32 %26, ptr %24, align 4, !tbaa !11
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.bitset, ptr %27, i32 0, i32 3
  store i32 0, ptr %28, align 8, !tbaa !15
  store i1 true, ptr %3, align 1
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  br label %29

29:                                               ; preds = %13, %12
  %30 = load i1, ptr %3, align 1
  ret i1 %30
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { inlinehint 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 #2 = { 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 #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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!14, !6, i64 0}
!14 = !{!"bitset", !6, i64 0, !10, i64 8, !10, i64 16, !12, i64 24, !6, i64 32}
!15 = !{!14, !12, i64 24}


; 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: inlinehint nounwind uwtable
declare hidden i64 @cmc_bidx_to_widx(i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local zeroext i1 @bs_impl_resize(ptr noundef, i64 noundef, i1 noundef zeroext) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local noundef zeroext i1 @bs_flip(ptr noundef %0, i64 noundef %1) local_unnamed_addr #1 {
  %3 = add i64 %1, 1
  %4 = tail call zeroext i1 @bs_impl_resize(ptr noundef %0, i64 noundef %3, i1 noundef zeroext false)
  br i1 %4, label %5, label %15

5:                                                ; preds = %2
  %6 = tail call i64 @cmc_bidx_to_widx(i64 noundef %1)
  %7 = trunc i64 %1 to i32
  %8 = and i32 %7, 31
  %9 = shl nuw i32 1, %8
  %10 = load ptr, ptr %0, align 8, !tbaa !5
  %11 = getelementptr inbounds i32, ptr %10, i64 %6
  %12 = load i32, ptr %11, align 4, !tbaa !12
  %13 = xor i32 %12, %9
  store i32 %13, ptr %11, align 4, !tbaa !12
  %14 = getelementptr inbounds i8, ptr %0, i64 24
  store i32 0, ptr %14, align 8, !tbaa !13
  br label %15

15:                                               ; preds = %2, %5
  ret i1 %4
}

attributes #0 = { inlinehint 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 = { 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, !7, i64 0}
!6 = !{!"bitset", !7, i64 0, !10, i64 8, !10, i64 16, !11, i64 24, !7, i64 32}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!"int", !8, i64 0}
!12 = !{!11, !11, i64 0}
!13 = !{!6, !11, i64 24}


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