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

; 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.int_list = type { ptr, i64, i64, i32, ptr, ptr }
%struct.int_list_fval = type { ptr, ptr, ptr, ptr, ptr, ptr }

@.str.3 = external hidden unnamed_addr constant [3 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: nounwind uwtable
define dso_local zeroext i1 @intl_print(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3, ptr noundef %4) #2 {
  %6 = alloca i1, align 1
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca ptr, align 8
  %12 = alloca i64, align 8
  %13 = alloca i32, align 4
  store ptr %0, ptr %7, align 8, !tbaa !5
  store ptr %1, ptr %8, align 8, !tbaa !5
  store ptr %2, ptr %9, align 8, !tbaa !5
  store ptr %3, ptr %10, align 8, !tbaa !5
  store ptr %4, ptr %11, align 8, !tbaa !5
  %14 = load ptr, ptr %8, align 8, !tbaa !5
  %15 = load ptr, ptr %9, align 8, !tbaa !5
  %16 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %14, ptr noundef @.str.3, ptr noundef %15) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %12) #3
  store i64 0, ptr %12, align 8, !tbaa !9
  br label %17

17:                                               ; preds = %51, %5
  %18 = load i64, ptr %12, align 8, !tbaa !9
  %19 = load ptr, ptr %7, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.int_list, ptr %19, i32 0, i32 2
  %21 = load i64, ptr %20, align 8, !tbaa !11
  %22 = icmp ult i64 %18, %21
  br i1 %22, label %24, label %23

23:                                               ; preds = %17
  store i32 2, ptr %13, align 4
  br label %54

24:                                               ; preds = %17
  %25 = load ptr, ptr %7, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.int_list, ptr %25, i32 0, i32 4
  %27 = load ptr, ptr %26, align 8, !tbaa !14
  %28 = getelementptr inbounds %struct.int_list_fval, ptr %27, i32 0, i32 2
  %29 = load ptr, ptr %28, align 8, !tbaa !15
  %30 = load ptr, ptr %8, align 8, !tbaa !5
  %31 = load ptr, ptr %7, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.int_list, ptr %31, i32 0, i32 0
  %33 = load ptr, ptr %32, align 8, !tbaa !17
  %34 = load i64, ptr %12, align 8, !tbaa !9
  %35 = getelementptr inbounds i32, ptr %33, i64 %34
  %36 = load i32, ptr %35, align 4, !tbaa !18
  %37 = call zeroext i1 %29(ptr noundef %30, i32 noundef %36)
  br i1 %37, label %39, label %38

38:                                               ; preds = %24
  store i1 false, ptr %6, align 1
  store i32 1, ptr %13, align 4
  br label %54

39:                                               ; preds = %24
  %40 = load i64, ptr %12, align 8, !tbaa !9
  %41 = add i64 %40, 1
  %42 = load ptr, ptr %7, align 8, !tbaa !5
  %43 = getelementptr inbounds %struct.int_list, ptr %42, i32 0, i32 2
  %44 = load i64, ptr %43, align 8, !tbaa !11
  %45 = icmp ult i64 %41, %44
  br i1 %45, label %46, label %50

46:                                               ; preds = %39
  %47 = load ptr, ptr %8, align 8, !tbaa !5
  %48 = load ptr, ptr %10, align 8, !tbaa !5
  %49 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %47, ptr noundef @.str.3, ptr noundef %48) #3
  br label %50

50:                                               ; preds = %46, %39
  br label %51

51:                                               ; preds = %50
  %52 = load i64, ptr %12, align 8, !tbaa !9
  %53 = add i64 %52, 1
  store i64 %53, ptr %12, align 8, !tbaa !9
  br label %17, !llvm.loop !19

54:                                               ; preds = %38, %23
  call void @llvm.lifetime.end.p0(i64 8, ptr %12) #3
  %55 = load i32, ptr %13, align 4
  switch i32 %55, label %62 [
    i32 2, label %56
    i32 1, label %60
  ]

56:                                               ; preds = %54
  %57 = load ptr, ptr %8, align 8, !tbaa !5
  %58 = load ptr, ptr %11, align 8, !tbaa !5
  %59 = call i32 (ptr, ptr, ...) @fprintf(ptr noundef %57, ptr noundef @.str.3, ptr noundef %58) #3
  store i1 true, ptr %6, align 1
  br label %60

60:                                               ; preds = %56, %54
  %61 = load i1, ptr %6, align 1
  ret i1 %61

62:                                               ; preds = %54
  unreachable
}

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 = { 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, !10, i64 16}
!12 = !{!"int_list", !6, i64 0, !10, i64 8, !10, i64 16, !13, i64 24, !6, i64 32, !6, i64 40}
!13 = !{!"int", !7, i64 0}
!14 = !{!12, !6, i64 32}
!15 = !{!16, !6, i64 16}
!16 = !{!"int_list_fval", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40}
!17 = !{!12, !6, i64 0}
!18 = !{!13, !13, i64 0}
!19 = distinct !{!19, !20}
!20 = !{!"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"

@.str.3 = external hidden unnamed_addr constant [3 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: nounwind uwtable
define dso_local noundef zeroext i1 @intl_print(ptr nocapture noundef readonly %0, ptr noundef %1, ptr noundef %2, ptr noundef %3, ptr noundef %4) local_unnamed_addr #1 {
  %6 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %1, ptr noundef nonnull @.str.3, ptr noundef %2) #2
  %7 = getelementptr inbounds i8, ptr %0, i64 16
  %8 = load i64, ptr %7, align 8, !tbaa !5
  %9 = icmp eq i64 %8, 0
  br i1 %9, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %5
  %10 = getelementptr inbounds i8, ptr %0, i64 32
  br label %11

11:                                               ; preds = %.lr.ph, %25
  %.01622 = phi i64 [ 0, %.lr.ph ], [ %20, %25 ]
  %12 = load ptr, ptr %10, align 8, !tbaa !12
  %13 = getelementptr inbounds i8, ptr %12, i64 16
  %14 = load ptr, ptr %13, align 8, !tbaa !13
  %15 = load ptr, ptr %0, align 8, !tbaa !15
  %16 = getelementptr inbounds i32, ptr %15, i64 %.01622
  %17 = load i32, ptr %16, align 4, !tbaa !16
  %18 = tail call zeroext i1 %14(ptr noundef %1, i32 noundef %17) #2
  br i1 %18, label %19, label %.loopexit

19:                                               ; preds = %11
  %20 = add nuw i64 %.01622, 1
  %21 = load i64, ptr %7, align 8, !tbaa !5
  %22 = icmp ult i64 %20, %21
  br i1 %22, label %23, label %25

23:                                               ; preds = %19
  %24 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %1, ptr noundef nonnull @.str.3, ptr noundef %3) #2
  %.pre = load i64, ptr %7, align 8, !tbaa !5
  br label %25

25:                                               ; preds = %19, %23
  %26 = phi i64 [ %21, %19 ], [ %.pre, %23 ]
  %.not = icmp ult i64 %20, %26
  br i1 %.not, label %11, label %._crit_edge, !llvm.loop !17

._crit_edge:                                      ; preds = %25, %5
  %27 = tail call i32 (ptr, ptr, ...) @fprintf(ptr noundef %1, ptr noundef nonnull @.str.3, ptr noundef %4) #2
  br label %.loopexit

.loopexit:                                        ; preds = %11, %._crit_edge
  %28 = phi i1 [ true, %._crit_edge ], [ false, %11 ]
  ret i1 %28
}

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 = { 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 }

!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, !10, i64 16}
!6 = !{!"int_list", !7, i64 0, !10, i64 8, !10, i64 16, !11, i64 24, !7, i64 32, !7, i64 40}
!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 = !{!6, !7, i64 32}
!13 = !{!14, !7, i64 16}
!14 = !{!"int_list_fval", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24, !7, i64 32, !7, i64 40}
!15 = !{!6, !7, i64 0}
!16 = !{!11, !11, i64 0}
!17 = distinct !{!17, !18}
!18 = !{!"llvm.loop.mustprogress"}


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