; LLVM IR from LeoVen/C-Macro-Collections :: examples (sac_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.list = type { [100 x i32], i64, i32, ptr, ptr }

; 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) #0

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

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0

; Function Attrs: nounwind uwtable
define dso_local zeroext i1 @l_seq_push_front(ptr noundef %0, ptr noundef %1, i64 noundef %2) #1 {
  %4 = alloca i1, align 1
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i64 %2, ptr %7, align 8, !tbaa !9
  %8 = load i64, ptr %7, align 8, !tbaa !9
  %9 = icmp eq i64 %8, 0
  br i1 %9, label %10, label %13

10:                                               ; preds = %3
  %11 = load ptr, ptr %5, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.list, ptr %11, i32 0, i32 2
  store i32 4, ptr %12, align 8, !tbaa !11
  store i1 false, ptr %4, align 1
  br label %46

13:                                               ; preds = %3
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = load i64, ptr %7, align 8, !tbaa !9
  %16 = call zeroext i1 @l_fits(ptr noundef %14, i64 noundef %15)
  br i1 %16, label %20, label %17

17:                                               ; preds = %13
  %18 = load ptr, ptr %5, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.list, ptr %18, i32 0, i32 2
  store i32 10, ptr %19, align 8, !tbaa !11
  store i1 false, ptr %4, align 1
  br label %46

20:                                               ; preds = %13
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.list, ptr %21, i32 0, i32 0
  %23 = getelementptr inbounds [100 x i32], ptr %22, i64 0, i64 0
  %24 = load i64, ptr %7, align 8, !tbaa !9
  %25 = getelementptr inbounds i32, ptr %23, i64 %24
  %26 = load ptr, ptr %5, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.list, ptr %26, i32 0, i32 0
  %28 = getelementptr inbounds [100 x i32], ptr %27, i64 0, i64 0
  %29 = load ptr, ptr %5, align 8, !tbaa !5
  %30 = getelementptr inbounds %struct.list, ptr %29, i32 0, i32 1
  %31 = load i64, ptr %30, align 8, !tbaa !14
  %32 = mul i64 %31, 4
  call void @llvm.memmove.p0.p0.i64(ptr align 4 %25, ptr align 8 %28, i64 %32, i1 false)
  %33 = load ptr, ptr %5, align 8, !tbaa !5
  %34 = getelementptr inbounds %struct.list, ptr %33, i32 0, i32 0
  %35 = getelementptr inbounds [100 x i32], ptr %34, i64 0, i64 0
  %36 = load ptr, ptr %6, align 8, !tbaa !5
  %37 = load i64, ptr %7, align 8, !tbaa !9
  %38 = mul i64 %37, 4
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %35, ptr align 4 %36, i64 %38, i1 false)
  %39 = load i64, ptr %7, align 8, !tbaa !9
  %40 = load ptr, ptr %5, align 8, !tbaa !5
  %41 = getelementptr inbounds %struct.list, ptr %40, i32 0, i32 1
  %42 = load i64, ptr %41, align 8, !tbaa !14
  %43 = add i64 %42, %39
  store i64 %43, ptr %41, align 8, !tbaa !14
  %44 = load ptr, ptr %5, align 8, !tbaa !5
  %45 = getelementptr inbounds %struct.list, ptr %44, i32 0, i32 2
  store i32 0, ptr %45, align 8, !tbaa !11
  store i1 true, ptr %4, align 1
  br label %46

46:                                               ; preds = %20, %17, %10
  %47 = load i1, ptr %4, align 1
  ret i1 %47
}

attributes #0 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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, !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, !13, i64 408}
!12 = !{!"list", !7, i64 0, !10, i64 400, !13, i64 408, !6, i64 416, !6, i64 424}
!13 = !{!"int", !7, i64 0}
!14 = !{!12, !10, i64 400}


; 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: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memmove.p0.p0.i64(ptr nocapture writeonly, ptr nocapture readonly, i64, i1 immarg) #0

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

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0

; Function Attrs: nounwind uwtable
define dso_local noundef zeroext i1 @l_seq_push_front(ptr noundef %0, ptr nocapture noundef readonly %1, i64 noundef %2) local_unnamed_addr #1 {
  %4 = icmp eq i64 %2, 0
  br i1 %4, label %15, label %5

5:                                                ; preds = %3
  %6 = tail call zeroext i1 @l_fits(ptr noundef %0, i64 noundef %2)
  br i1 %6, label %7, label %15

7:                                                ; preds = %5
  %8 = getelementptr inbounds i32, ptr %0, i64 %2
  %9 = getelementptr inbounds i8, ptr %0, i64 400
  %10 = load i64, ptr %9, align 8, !tbaa !5
  %11 = shl i64 %10, 2
  tail call void @llvm.memmove.p0.p0.i64(ptr nonnull align 4 %8, ptr align 8 %0, i64 %11, i1 false)
  %12 = shl i64 %2, 2
  tail call void @llvm.memcpy.p0.p0.i64(ptr align 8 %0, ptr align 4 %1, i64 %12, i1 false)
  %13 = load i64, ptr %9, align 8, !tbaa !5
  %14 = add i64 %13, %2
  store i64 %14, ptr %9, align 8, !tbaa !5
  br label %15

15:                                               ; preds = %5, %3, %7
  %.sink = phi i32 [ 0, %7 ], [ 4, %3 ], [ 10, %5 ]
  %.0 = phi i1 [ true, %7 ], [ false, %3 ], [ false, %5 ]
  %16 = getelementptr inbounds i8, ptr %0, i64 408
  store i32 %.sink, ptr %16, align 8, !tbaa !12
  ret i1 %.0
}

attributes #0 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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, !9, i64 400}
!6 = !{!"list", !7, i64 0, !9, i64 400, !10, i64 408, !11, i64 416, !11, i64 424}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!"long", !7, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!"any pointer", !7, i64 0}
!12 = !{!6, !10, i64 408}


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