; LLVM IR from jspd-group/pegit :: src (delta)

; 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.basic_delta_result = type { i64, i64, i64, ptr, %struct.strbuf_list, %struct.strbuf_list }
%struct.strbuf_list = type { ptr, ptr, i64 }
%struct.strbuf_list_node = type { %struct.strbuf, i8, i64, ptr }
%struct.strbuf = type { i64, i64, ptr }

@.str.21 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.22 = 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

declare i32 @printf(ptr noundef, ...) #1

; Function Attrs: nounwind uwtable
define dso_local void @delta_summary(ptr noundef %0, ptr noundef %1) #2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.basic_delta_result, ptr %6, i32 0, i32 5
  %8 = getelementptr inbounds %struct.strbuf_list, ptr %7, i32 0, i32 0
  %9 = load ptr, ptr %8, align 8, !tbaa !9
  %10 = getelementptr inbounds %struct.strbuf_list_node, ptr %9, i32 0, i32 3
  %11 = load ptr, ptr %10, align 8, !tbaa !13
  store ptr %11, ptr %5, align 8, !tbaa !5
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  br label %13

13:                                               ; preds = %16, %2
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  %15 = icmp ne ptr %14, null
  br i1 %15, label %16, label %30

16:                                               ; preds = %13
  %17 = load ptr, ptr %5, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.strbuf_list_node, ptr %17, i32 0, i32 1
  %19 = load i8, ptr %18, align 8, !tbaa !16
  %20 = sext i8 %19 to i32
  %21 = call i32 (ptr, ...) @printf(ptr noundef @.str.21, i32 noundef %20)
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.strbuf_list_node, ptr %22, i32 0, i32 0
  %24 = getelementptr inbounds %struct.strbuf, ptr %23, i32 0, i32 2
  %25 = load ptr, ptr %24, align 8, !tbaa !17
  %26 = call i32 (ptr, ...) @printf(ptr noundef @.str.22, ptr noundef %25)
  %27 = load ptr, ptr %5, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.strbuf_list_node, ptr %27, i32 0, i32 3
  %29 = load ptr, ptr %28, align 8, !tbaa !13
  store ptr %29, ptr %5, align 8, !tbaa !5
  br label %13, !llvm.loop !18

30:                                               ; preds = %13
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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, !6, i64 56}
!10 = !{!"basic_delta_result", !11, i64 0, !11, i64 8, !11, i64 16, !6, i64 24, !12, i64 32, !12, i64 56}
!11 = !{!"long", !7, i64 0}
!12 = !{!"strbuf_list", !6, i64 0, !6, i64 8, !11, i64 16}
!13 = !{!14, !6, i64 40}
!14 = !{!"strbuf_list_node", !15, i64 0, !7, i64 24, !11, i64 32, !6, i64 40}
!15 = !{!"strbuf", !11, i64 0, !11, i64 8, !6, i64 16}
!16 = !{!14, !7, i64 24}
!17 = !{!14, !6, i64 16}
!18 = distinct !{!18, !19}
!19 = !{!"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.21 = external hidden unnamed_addr constant [3 x i8], align 1
@.str.22 = external hidden unnamed_addr constant [3 x i8], align 1

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

; Function Attrs: nofree nounwind uwtable
define dso_local void @delta_summary(ptr nocapture noundef readonly %0, ptr nocapture noundef readnone %1) local_unnamed_addr #1 {
  %3 = getelementptr inbounds i8, ptr %0, i64 56
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %.0.in6 = getelementptr inbounds i8, ptr %4, i64 40
  %.07 = load ptr, ptr %.0.in6, align 8, !tbaa !12
  %.not8 = icmp eq ptr %.07, null
  br i1 %.not8, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.09 = phi ptr [ %.0, %.lr.ph ], [ %.07, %2 ]
  %5 = getelementptr inbounds i8, ptr %.09, i64 24
  %6 = load i8, ptr %5, align 8, !tbaa !15
  %7 = sext i8 %6 to i32
  %8 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.21, i32 noundef %7)
  %9 = getelementptr inbounds i8, ptr %.09, i64 16
  %10 = load ptr, ptr %9, align 8, !tbaa !16
  %11 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.22, ptr noundef %10)
  %.0.in = getelementptr inbounds i8, ptr %.09, i64 40
  %.0 = load ptr, ptr %.0.in, align 8, !tbaa !12
  %.not = icmp eq ptr %.0, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !17

._crit_edge:                                      ; preds = %.lr.ph, %2
  ret void
}

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 = { nofree 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, !10, i64 56}
!6 = !{!"basic_delta_result", !7, i64 0, !7, i64 8, !7, i64 16, !10, i64 24, !11, i64 32, !11, i64 56}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!"strbuf_list", !10, i64 0, !10, i64 8, !7, i64 16}
!12 = !{!13, !10, i64 40}
!13 = !{!"strbuf_list_node", !14, i64 0, !8, i64 24, !7, i64 32, !10, i64 40}
!14 = !{!"strbuf", !7, i64 0, !7, i64 8, !10, i64 16}
!15 = !{!13, !8, i64 24}
!16 = !{!13, !10, i64 16}
!17 = distinct !{!17, !18}
!18 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass