; 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 }

; Function Attrs: nounwind uwtable
define dso_local zeroext i1 @intl_push_front(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = call zeroext i1 @intl_full(ptr noundef %6)
  br i1 %7, label %8, label %17

8:                                                ; preds = %2
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.int_list, ptr %10, i32 0, i32 2
  %12 = load i64, ptr %11, align 8, !tbaa !11
  %13 = mul i64 %12, 2
  %14 = call zeroext i1 @intl_resize(ptr noundef %9, i64 noundef %13)
  br i1 %14, label %16, label %15

15:                                               ; preds = %8
  store i1 false, ptr %3, align 1
  br label %44

16:                                               ; preds = %8
  br label %17

17:                                               ; preds = %16, %2
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = call zeroext i1 @intl_empty(ptr noundef %18)
  br i1 %19, label %32, label %20

20:                                               ; preds = %17
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.int_list, ptr %21, i32 0, i32 0
  %23 = load ptr, ptr %22, align 8, !tbaa !14
  %24 = getelementptr inbounds i32, ptr %23, i64 1
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.int_list, ptr %25, i32 0, i32 0
  %27 = load ptr, ptr %26, align 8, !tbaa !14
  %28 = load ptr, ptr %4, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.int_list, ptr %28, i32 0, i32 2
  %30 = load i64, ptr %29, align 8, !tbaa !11
  %31 = mul i64 %30, 4
  call void @llvm.memmove.p0.p0.i64(ptr align 4 %24, ptr align 4 %27, i64 %31, i1 false)
  br label %32

32:                                               ; preds = %20, %17
  %33 = load i32, ptr %5, align 4, !tbaa !9
  %34 = load ptr, ptr %4, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.int_list, ptr %34, i32 0, i32 0
  %36 = load ptr, ptr %35, align 8, !tbaa !14
  %37 = getelementptr inbounds i32, ptr %36, i64 0
  store i32 %33, ptr %37, align 4, !tbaa !9
  %38 = load ptr, ptr %4, align 8, !tbaa !5
  %39 = getelementptr inbounds %struct.int_list, ptr %38, i32 0, i32 2
  %40 = load i64, ptr %39, align 8, !tbaa !11
  %41 = add i64 %40, 1
  store i64 %41, ptr %39, align 8, !tbaa !11
  %42 = load ptr, ptr %4, align 8, !tbaa !5
  %43 = getelementptr inbounds %struct.int_list, ptr %42, i32 0, i32 3
  store i32 0, ptr %43, align 8, !tbaa !15
  store i1 true, ptr %3, align 1
  br label %44

44:                                               ; preds = %32, %15
  %45 = load i1, ptr %3, align 1
  ret i1 %45
}

; Function Attrs: nounwind uwtable
declare dso_local zeroext i1 @intl_full(ptr noundef) #0

; Function Attrs: nounwind uwtable
declare dso_local zeroext i1 @intl_resize(ptr noundef, i64 noundef) #0

; Function Attrs: nounwind uwtable
declare dso_local zeroext i1 @intl_empty(ptr noundef) #0

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memmove.p0.p0.i64(ptr nocapture writeonly, ptr nocapture readonly, i64, i1 immarg) #1

attributes #0 = { 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 nounwind willreturn memory(argmem: readwrite) }

!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 = !{!"int", !7, i64 0}
!11 = !{!12, !13, i64 16}
!12 = !{!"int_list", !6, i64 0, !13, i64 8, !13, i64 16, !10, i64 24, !6, i64 32, !6, i64 40}
!13 = !{!"long", !7, i64 0}
!14 = !{!12, !6, i64 0}
!15 = !{!12, !10, 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: nounwind uwtable
define dso_local noundef zeroext i1 @intl_push_front(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = tail call zeroext i1 @intl_full(ptr noundef %0)
  br i1 %3, label %4, label %9

4:                                                ; preds = %2
  %5 = getelementptr inbounds i8, ptr %0, i64 16
  %6 = load i64, ptr %5, align 8, !tbaa !5
  %7 = shl i64 %6, 1
  %8 = tail call zeroext i1 @intl_resize(ptr noundef %0, i64 noundef %7)
  br i1 %8, label %9, label %23

9:                                                ; preds = %4, %2
  %10 = tail call zeroext i1 @intl_empty(ptr noundef %0)
  br i1 %10, label %17, label %11

11:                                               ; preds = %9
  %12 = load ptr, ptr %0, align 8, !tbaa !12
  %13 = getelementptr inbounds i8, ptr %12, i64 4
  %14 = getelementptr inbounds i8, ptr %0, i64 16
  %15 = load i64, ptr %14, align 8, !tbaa !5
  %16 = shl i64 %15, 2
  tail call void @llvm.memmove.p0.p0.i64(ptr nonnull align 4 %13, ptr align 4 %12, i64 %16, i1 false)
  br label %17

17:                                               ; preds = %11, %9
  %18 = load ptr, ptr %0, align 8, !tbaa !12
  store i32 %1, ptr %18, align 4, !tbaa !13
  %19 = getelementptr inbounds i8, ptr %0, i64 16
  %20 = load i64, ptr %19, align 8, !tbaa !5
  %21 = add i64 %20, 1
  store i64 %21, ptr %19, align 8, !tbaa !5
  %22 = getelementptr inbounds i8, ptr %0, i64 24
  store i32 0, ptr %22, align 8, !tbaa !14
  br label %23

23:                                               ; preds = %4, %17
  %.0 = phi i1 [ true, %17 ], [ false, %4 ]
  ret i1 %.0
}

; Function Attrs: nounwind uwtable
declare dso_local zeroext i1 @intl_full(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local zeroext i1 @intl_resize(ptr noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
declare dso_local zeroext i1 @intl_empty(ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memmove.p0.p0.i64(ptr nocapture writeonly, ptr nocapture readonly, i64, i1 immarg) #1

attributes #0 = { 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 nounwind willreturn memory(argmem: readwrite) }

!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 0}
!13 = !{!11, !11, i64 0}
!14 = !{!6, !11, i64 24}


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