; LLVM IR from tenok-rtos/tenok :: user/debug-link (debug_link)

; 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.debug_link_payload_t = type { ptr, i32 }

; Function Attrs: nounwind uwtable
define dso_local void @pack_debug_link_msg_bool(ptr noundef %0, ptr noundef %1, i64 noundef %2) #0 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i64 %2, ptr %6, align 8, !tbaa !9
  br label %7

7:                                                ; preds = %11, %3
  %8 = load i64, ptr %6, align 8, !tbaa !9
  %9 = add i64 %8, -1
  store i64 %9, ptr %6, align 8, !tbaa !9
  %10 = icmp ne i64 %8, 0
  br i1 %10, label %11, label %27

11:                                               ; preds = %7
  %12 = load ptr, ptr %5, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.debug_link_payload_t, ptr %12, i32 0, i32 0
  %14 = load ptr, ptr %13, align 8, !tbaa !11
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.debug_link_payload_t, ptr %15, i32 0, i32 1
  %17 = load i32, ptr %16, align 8, !tbaa !14
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds i8, ptr %14, i64 %18
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %19, ptr align 1 %20, i64 1, i1 false)
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.debug_link_payload_t, ptr %21, i32 0, i32 1
  %23 = load i32, ptr %22, align 8, !tbaa !14
  %24 = sext i32 %23 to i64
  %25 = add i64 %24, 1
  %26 = trunc i64 %25 to i32
  store i32 %26, ptr %22, align 8, !tbaa !14
  br label %7, !llvm.loop !15

27:                                               ; preds = %7
  ret void
}

; 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) #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 = !{!"long", !7, i64 0}
!11 = !{!12, !6, i64 0}
!12 = !{!"", !6, i64 0, !13, i64 8}
!13 = !{!"int", !7, i64 0}
!14 = !{!12, !13, i64 8}
!15 = distinct !{!15, !16}
!16 = !{!"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"

; Function Attrs: nofree norecurse nosync nounwind memory(write, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local void @pack_debug_link_msg_bool(ptr nocapture noundef readonly %0, ptr nocapture noundef %1, i64 noundef %2) local_unnamed_addr #0 {
  %.not4 = icmp eq i64 %2, 0
  br i1 %.not4, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3
  %4 = getelementptr inbounds i8, ptr %1, i64 8
  %.pre = load i32, ptr %4, align 8, !tbaa !5
  %xtraiter = and i64 %2, 1
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.prol.loopexit, label %.prol.loopexit.unr-lcssa

.prol.loopexit.unr-lcssa:                         ; preds = %.lr.ph
  %5 = add nsw i64 %2, -1
  %6 = load ptr, ptr %1, align 8, !tbaa !11
  %7 = sext i32 %.pre to i64
  %8 = getelementptr inbounds i8, ptr %6, i64 %7
  %9 = load i8, ptr %0, align 1
  store i8 %9, ptr %8, align 1
  %10 = load i32, ptr %4, align 8, !tbaa !5
  %11 = add i32 %10, 1
  store i32 %11, ptr %4, align 8, !tbaa !5
  br label %.prol.loopexit

.prol.loopexit:                                   ; preds = %.prol.loopexit.unr-lcssa, %.lr.ph
  %.unr = phi i32 [ %.pre, %.lr.ph ], [ %11, %.prol.loopexit.unr-lcssa ]
  %.05.unr = phi i64 [ %2, %.lr.ph ], [ %5, %.prol.loopexit.unr-lcssa ]
  %12 = icmp eq i64 %2, 1
  br i1 %12, label %._crit_edge, label %.lr.ph.new

.lr.ph.new:                                       ; preds = %.prol.loopexit, %.lr.ph.new
  %13 = phi i32 [ %26, %.lr.ph.new ], [ %.unr, %.prol.loopexit ]
  %.05 = phi i64 [ %20, %.lr.ph.new ], [ %.05.unr, %.prol.loopexit ]
  %14 = load ptr, ptr %1, align 8, !tbaa !11
  %15 = sext i32 %13 to i64
  %16 = getelementptr inbounds i8, ptr %14, i64 %15
  %17 = load i8, ptr %0, align 1
  store i8 %17, ptr %16, align 1
  %18 = load i32, ptr %4, align 8, !tbaa !5
  %19 = add i32 %18, 1
  store i32 %19, ptr %4, align 8, !tbaa !5
  %20 = add i64 %.05, -2
  %21 = load ptr, ptr %1, align 8, !tbaa !11
  %22 = sext i32 %19 to i64
  %23 = getelementptr inbounds i8, ptr %21, i64 %22
  %24 = load i8, ptr %0, align 1
  store i8 %24, ptr %23, align 1
  %25 = load i32, ptr %4, align 8, !tbaa !5
  %26 = add i32 %25, 1
  store i32 %26, ptr %4, align 8, !tbaa !5
  %.not.1 = icmp eq i64 %20, 0
  br i1 %.not.1, label %._crit_edge, label %.lr.ph.new, !llvm.loop !12

._crit_edge:                                      ; preds = %.prol.loopexit, %.lr.ph.new, %3
  ret void
}

attributes #0 = { nofree norecurse nosync nounwind memory(write, argmem: readwrite, inaccessiblemem: none) 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 8}
!6 = !{!"", !7, i64 0, !10, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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