; LLVM IR from CLASS-SZ/class_sz :: class-sz/tools (r8lib)

; 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"

@stderr = external global ptr, align 8
@.str = external hidden unnamed_addr constant [2 x i8], align 1
@.str.81 = external hidden unnamed_addr constant [28 x i8], align 1
@.str.82 = external hidden unnamed_addr constant [41 x i8], align 1
@.str.83 = external hidden unnamed_addr constant [44 x i8], align 1
@.str.84 = external hidden unnamed_addr constant [35 x i8], align 1

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

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

; Function Attrs: nounwind
declare i32 @fprintf(ptr noundef, ptr noundef, ...) #1

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) #2

; Function Attrs: nounwind allocsize(0)
declare noalias ptr @malloc(i64 noundef) #3

; Function Attrs: nounwind uwtable
define dso_local ptr @r8block_new(i32 noundef %0, i32 noundef %1, i32 noundef %2) #4 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #5
  %10 = load i32, ptr %4, align 4, !tbaa !5
  %11 = sext i32 %10 to i64
  %12 = mul i64 %11, 8
  %13 = call noalias ptr @malloc(i64 noundef %12) #6
  store ptr %13, ptr %7, align 8, !tbaa !9
  %14 = load ptr, ptr %7, align 8, !tbaa !9
  %15 = icmp eq ptr %14, null
  br i1 %15, label %16, label %23

16:                                               ; preds = %3
  %17 = load ptr, ptr @stderr, align 8, !tbaa !9
  %18 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %17, ptr noundef @.str) #5
  %19 = load ptr, ptr @stderr, align 8, !tbaa !9
  %20 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %19, ptr noundef @.str.81) #5
  %21 = load ptr, ptr @stderr, align 8, !tbaa !9
  %22 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %21, ptr noundef @.str.82) #5
  call void @exit(i32 noundef 1) #7
  unreachable

23:                                               ; preds = %3
  store i32 0, ptr %8, align 4, !tbaa !5
  br label %24

24:                                               ; preds = %51, %23
  %25 = load i32, ptr %8, align 4, !tbaa !5
  %26 = load i32, ptr %4, align 4, !tbaa !5
  %27 = icmp slt i32 %25, %26
  br i1 %27, label %28, label %54

28:                                               ; preds = %24
  %29 = load i32, ptr %5, align 4, !tbaa !5
  %30 = sext i32 %29 to i64
  %31 = mul i64 %30, 8
  %32 = call noalias ptr @malloc(i64 noundef %31) #6
  %33 = load ptr, ptr %7, align 8, !tbaa !9
  %34 = load i32, ptr %8, align 4, !tbaa !5
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds ptr, ptr %33, i64 %35
  store ptr %32, ptr %36, align 8, !tbaa !9
  %37 = load ptr, ptr %7, align 8, !tbaa !9
  %38 = load i32, ptr %8, align 4, !tbaa !5
  %39 = sext i32 %38 to i64
  %40 = getelementptr inbounds ptr, ptr %37, i64 %39
  %41 = load ptr, ptr %40, align 8, !tbaa !9
  %42 = icmp eq ptr %41, null
  br i1 %42, label %43, label %50

43:                                               ; preds = %28
  %44 = load ptr, ptr @stderr, align 8, !tbaa !9
  %45 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %44, ptr noundef @.str) #5
  %46 = load ptr, ptr @stderr, align 8, !tbaa !9
  %47 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %46, ptr noundef @.str.81) #5
  %48 = load ptr, ptr @stderr, align 8, !tbaa !9
  %49 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %48, ptr noundef @.str.83) #5
  call void @exit(i32 noundef 1) #7
  unreachable

50:                                               ; preds = %28
  br label %51

51:                                               ; preds = %50
  %52 = load i32, ptr %8, align 4, !tbaa !5
  %53 = add nsw i32 %52, 1
  store i32 %53, ptr %8, align 4, !tbaa !5
  br label %24, !llvm.loop !11

54:                                               ; preds = %24
  store i32 0, ptr %8, align 4, !tbaa !5
  br label %55

55:                                               ; preds = %99, %54
  %56 = load i32, ptr %8, align 4, !tbaa !5
  %57 = load i32, ptr %4, align 4, !tbaa !5
  %58 = icmp slt i32 %56, %57
  br i1 %58, label %59, label %102

59:                                               ; preds = %55
  store i32 0, ptr %9, align 4, !tbaa !5
  br label %60

60:                                               ; preds = %95, %59
  %61 = load i32, ptr %9, align 4, !tbaa !5
  %62 = load i32, ptr %5, align 4, !tbaa !5
  %63 = icmp slt i32 %61, %62
  br i1 %63, label %64, label %98

64:                                               ; preds = %60
  %65 = load i32, ptr %6, align 4, !tbaa !5
  %66 = sext i32 %65 to i64
  %67 = mul i64 %66, 8
  %68 = call noalias ptr @malloc(i64 noundef %67) #6
  %69 = load ptr, ptr %7, align 8, !tbaa !9
  %70 = load i32, ptr %8, align 4, !tbaa !5
  %71 = sext i32 %70 to i64
  %72 = getelementptr inbounds ptr, ptr %69, i64 %71
  %73 = load ptr, ptr %72, align 8, !tbaa !9
  %74 = load i32, ptr %9, align 4, !tbaa !5
  %75 = sext i32 %74 to i64
  %76 = getelementptr inbounds ptr, ptr %73, i64 %75
  store ptr %68, ptr %76, align 8, !tbaa !9
  %77 = load ptr, ptr %7, align 8, !tbaa !9
  %78 = load i32, ptr %8, align 4, !tbaa !5
  %79 = sext i32 %78 to i64
  %80 = getelementptr inbounds ptr, ptr %77, i64 %79
  %81 = load ptr, ptr %80, align 8, !tbaa !9
  %82 = load i32, ptr %9, align 4, !tbaa !5
  %83 = sext i32 %82 to i64
  %84 = getelementptr inbounds ptr, ptr %81, i64 %83
  %85 = load ptr, ptr %84, align 8, !tbaa !9
  %86 = icmp eq ptr %85, null
  br i1 %86, label %87, label %94

87:                                               ; preds = %64
  %88 = load ptr, ptr @stderr, align 8, !tbaa !9
  %89 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %88, ptr noundef @.str) #5
  %90 = load ptr, ptr @stderr, align 8, !tbaa !9
  %91 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %90, ptr noundef @.str.81) #5
  %92 = load ptr, ptr @stderr, align 8, !tbaa !9
  %93 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %92, ptr noundef @.str.84) #5
  call void @exit(i32 noundef 1) #7
  unreachable

94:                                               ; preds = %64
  br label %95

95:                                               ; preds = %94
  %96 = load i32, ptr %9, align 4, !tbaa !5
  %97 = add nsw i32 %96, 1
  store i32 %97, ptr %9, align 4, !tbaa !5
  br label %60, !llvm.loop !13

98:                                               ; preds = %60
  br label %99

99:                                               ; preds = %98
  %100 = load i32, ptr %8, align 4, !tbaa !5
  %101 = add nsw i32 %100, 1
  store i32 %101, ptr %8, align 4, !tbaa !5
  br label %55, !llvm.loop !14

102:                                              ; preds = %55
  %103 = load ptr, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #5
  ret ptr %103
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { noreturn 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 allocsize(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 #4 = { 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 #5 = { nounwind }
attributes #6 = { nounwind allocsize(0) }
attributes #7 = { noreturn 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = distinct !{!13, !12}
!14 = distinct !{!14, !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"

@stderr = external local_unnamed_addr global ptr, align 8
@.str = external hidden unnamed_addr constant [2 x i8], align 1
@.str.81 = external hidden unnamed_addr constant [28 x i8], align 1
@.str.82 = external hidden unnamed_addr constant [41 x i8], align 1
@.str.83 = external hidden unnamed_addr constant [44 x i8], align 1
@.str.84 = external hidden unnamed_addr constant [35 x i8], align 1

; Function Attrs: nofree nounwind
declare noundef i32 @fprintf(ptr nocapture noundef, ptr nocapture noundef readonly, ...) local_unnamed_addr #0

; Function Attrs: noreturn nounwind
declare void @exit(i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite)
declare noalias noundef ptr @malloc(i64 noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local noalias noundef ptr @r8block_new(i32 noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #3 {
  %4 = sext i32 %0 to i64
  %5 = shl nsw i64 %4, 3
  %6 = tail call noalias ptr @malloc(i64 noundef %5) #4
  %7 = icmp eq ptr %6, null
  br i1 %7, label %11, label %.preheader27

.preheader27:                                     ; preds = %3
  %8 = icmp sgt i32 %0, 0
  br i1 %8, label %.lr.ph, label %._crit_edge32

.lr.ph:                                           ; preds = %.preheader27
  %9 = sext i32 %1 to i64
  %10 = shl nsw i64 %9, 3
  %wide.trip.count = zext nneg i32 %0 to i64
  br label %29

11:                                               ; preds = %3
  %12 = load ptr, ptr @stderr, align 8, !tbaa !5
  %13 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %12, ptr noundef nonnull @.str) #5
  %14 = load ptr, ptr @stderr, align 8, !tbaa !5
  %15 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %14, ptr noundef nonnull @.str.81) #5
  %16 = load ptr, ptr @stderr, align 8, !tbaa !5
  %17 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %16, ptr noundef nonnull @.str.82) #5
  tail call void @exit(i32 noundef 1) #6
  unreachable

18:                                               ; preds = %29
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %.preheader26, label %29, !llvm.loop !9

.preheader26:                                     ; preds = %18
  br i1 %8, label %.preheader.lr.ph, label %._crit_edge32

.preheader.lr.ph:                                 ; preds = %.preheader26
  %19 = icmp sgt i32 %1, 0
  %20 = sext i32 %2 to i64
  %21 = shl nsw i64 %20, 3
  br i1 %19, label %.preheader.us.preheader, label %._crit_edge32

.preheader.us.preheader:                          ; preds = %.preheader.lr.ph
  %wide.trip.count43 = zext nneg i32 %0 to i64
  %wide.trip.count38 = zext nneg i32 %1 to i64
  br label %.preheader.us

.preheader.us:                                    ; preds = %.preheader.us.preheader, %._crit_edge.us
  %indvars.iv40 = phi i64 [ 0, %.preheader.us.preheader ], [ %indvars.iv.next41, %._crit_edge.us ]
  %22 = getelementptr inbounds ptr, ptr %6, i64 %indvars.iv40
  %23 = load ptr, ptr %22, align 8, !tbaa !5
  br label %25

24:                                               ; preds = %25
  %indvars.iv.next36 = add nuw nsw i64 %indvars.iv35, 1
  %exitcond39.not = icmp eq i64 %indvars.iv.next36, %wide.trip.count38
  br i1 %exitcond39.not, label %._crit_edge.us, label %25, !llvm.loop !11

25:                                               ; preds = %.preheader.us, %24
  %indvars.iv35 = phi i64 [ 0, %.preheader.us ], [ %indvars.iv.next36, %24 ]
  %26 = tail call noalias ptr @malloc(i64 noundef %21) #4
  %27 = getelementptr inbounds ptr, ptr %23, i64 %indvars.iv35
  store ptr %26, ptr %27, align 8, !tbaa !5
  %28 = icmp eq ptr %26, null
  br i1 %28, label %.split.us, label %24

._crit_edge.us:                                   ; preds = %24
  %indvars.iv.next41 = add nuw nsw i64 %indvars.iv40, 1
  %exitcond44.not = icmp eq i64 %indvars.iv.next41, %wide.trip.count43
  br i1 %exitcond44.not, label %._crit_edge32, label %.preheader.us, !llvm.loop !12

29:                                               ; preds = %.lr.ph, %18
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %18 ]
  %30 = tail call noalias ptr @malloc(i64 noundef %10) #4
  %31 = getelementptr inbounds ptr, ptr %6, i64 %indvars.iv
  store ptr %30, ptr %31, align 8, !tbaa !5
  %32 = icmp eq ptr %30, null
  br i1 %32, label %33, label %18

33:                                               ; preds = %29
  %34 = load ptr, ptr @stderr, align 8, !tbaa !5
  %35 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %34, ptr noundef nonnull @.str) #5
  %36 = load ptr, ptr @stderr, align 8, !tbaa !5
  %37 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %36, ptr noundef nonnull @.str.81) #5
  %38 = load ptr, ptr @stderr, align 8, !tbaa !5
  %39 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %38, ptr noundef nonnull @.str.83) #5
  tail call void @exit(i32 noundef 1) #6
  unreachable

.split.us:                                        ; preds = %25
  %40 = load ptr, ptr @stderr, align 8, !tbaa !5
  %41 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %40, ptr noundef nonnull @.str) #5
  %42 = load ptr, ptr @stderr, align 8, !tbaa !5
  %43 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %42, ptr noundef nonnull @.str.81) #5
  %44 = load ptr, ptr @stderr, align 8, !tbaa !5
  %45 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %44, ptr noundef nonnull @.str.84) #5
  tail call void @exit(i32 noundef 1) #6
  unreachable

._crit_edge32:                                    ; preds = %._crit_edge.us, %.preheader27, %.preheader.lr.ph, %.preheader26
  ret ptr %6
}

attributes #0 = { 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 #1 = { noreturn 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 #2 = { mustprogress nofree nounwind willreturn allockind("alloc,uninitialized") allocsize(0) memory(inaccessiblemem: readwrite) "alloc-family"="malloc" "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 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 #4 = { nounwind allocsize(0) }
attributes #5 = { cold nounwind }
attributes #6 = { noreturn 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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopInstSimplifyPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass