; LLVM IR from ggml-org/ggml :: src (ggml-backend)

; 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.ggml_backend_sched = type { i8, i8, i32, [16 x ptr], [16 x ptr], ptr, %struct.ggml_hash_set, ptr, ptr, ptr, ptr, ptr, ptr, %struct.ggml_cgraph, ptr, i32, i32, i32, i32, [16 x [4 x ptr]], [10 x ptr], i32, ptr, ptr, ptr, ptr, i64, i32 }
%struct.ggml_hash_set = type { i64, ptr, ptr }
%struct.ggml_cgraph = type { i32, i32, i32, ptr, ptr, ptr, ptr, %struct.ggml_hash_set, i32 }

; 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: mustprogress uwtable
declare dso_local void @ggml_backend_synchronize(ptr noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local void @ggml_backend_sched_synchronize(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  store i32 0, ptr %3, align 4, !tbaa !9
  br label %4

4:                                                ; preds = %18, %1
  %5 = load i32, ptr %3, align 4, !tbaa !9
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.ggml_backend_sched, ptr %6, i32 0, i32 2
  %8 = load i32, ptr %7, align 4, !tbaa !11
  %9 = icmp slt i32 %5, %8
  br i1 %9, label %11, label %10

10:                                               ; preds = %4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  br label %21

11:                                               ; preds = %4
  %12 = load ptr, ptr %2, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.ggml_backend_sched, ptr %12, i32 0, i32 3
  %14 = load i32, ptr %3, align 4, !tbaa !9
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [16 x ptr], ptr %13, i64 0, i64 %15
  %17 = load ptr, ptr %16, align 8, !tbaa !5
  call void @ggml_backend_synchronize(ptr noundef %17)
  br label %18

18:                                               ; preds = %11
  %19 = load i32, ptr %3, align 4, !tbaa !9
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %3, align 4, !tbaa !9
  br label %4, !llvm.loop !18

21:                                               ; preds = %10
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 4}
!12 = !{!"_ZTS18ggml_backend_sched", !13, i64 0, !13, i64 1, !10, i64 4, !7, i64 8, !7, i64 136, !6, i64 264, !14, i64 272, !6, i64 296, !6, i64 304, !6, i64 312, !6, i64 320, !6, i64 328, !6, i64 336, !16, i64 344, !6, i64 424, !10, i64 432, !10, i64 436, !10, i64 440, !10, i64 444, !7, i64 448, !7, i64 960, !10, i64 1040, !6, i64 1048, !6, i64 1056, !6, i64 1064, !6, i64 1072, !15, i64 1080, !10, i64 1088}
!13 = !{!"bool", !7, i64 0}
!14 = !{!"_ZTS13ggml_hash_set", !15, i64 0, !6, i64 8, !6, i64 16}
!15 = !{!"long", !7, i64 0}
!16 = !{!"_ZTS11ggml_cgraph", !10, i64 0, !10, i64 4, !10, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40, !14, i64 48, !17, i64 72}
!17 = !{!"_ZTS22ggml_cgraph_eval_order", !7, i64 0}
!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"

; Function Attrs: mustprogress uwtable
declare dso_local void @ggml_backend_synchronize(ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @ggml_backend_sched_synchronize(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 4
  %3 = load i32, ptr %2, align 4, !tbaa !5
  %4 = icmp sgt i32 %3, 0
  br i1 %4, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1
  %5 = getelementptr inbounds i8, ptr %0, i64 8
  br label %6

._crit_edge:                                      ; preds = %6, %1
  ret void

6:                                                ; preds = %.lr.ph, %6
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %6 ]
  %7 = getelementptr inbounds [16 x ptr], ptr %5, i64 0, i64 %indvars.iv
  %8 = load ptr, ptr %7, align 8, !tbaa !16
  tail call void @ggml_backend_synchronize(ptr noundef %8)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %10 = sext i32 %9 to i64
  %11 = icmp slt i64 %indvars.iv.next, %10
  br i1 %11, label %6, label %._crit_edge, !llvm.loop !17
}

attributes #0 = { mustprogress 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 4}
!6 = !{!"_ZTS18ggml_backend_sched", !7, i64 0, !7, i64 1, !10, i64 4, !8, i64 8, !8, i64 136, !11, i64 264, !12, i64 272, !11, i64 296, !11, i64 304, !11, i64 312, !11, i64 320, !11, i64 328, !11, i64 336, !14, i64 344, !11, i64 424, !10, i64 432, !10, i64 436, !10, i64 440, !10, i64 444, !8, i64 448, !8, i64 960, !10, i64 1040, !11, i64 1048, !11, i64 1056, !11, i64 1064, !11, i64 1072, !13, i64 1080, !10, i64 1088}
!7 = !{!"bool", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"any pointer", !8, i64 0}
!12 = !{!"_ZTS13ggml_hash_set", !13, i64 0, !11, i64 8, !11, i64 16}
!13 = !{!"long", !8, i64 0}
!14 = !{!"_ZTS11ggml_cgraph", !10, i64 0, !10, i64 4, !10, i64 8, !11, i64 16, !11, i64 24, !11, i64 32, !11, i64 40, !12, i64 48, !15, i64 72}
!15 = !{!"_ZTS22ggml_cgraph_eval_order", !8, i64 0}
!16 = !{!11, !11, i64 0}
!17 = distinct !{!17, !18}
!18 = !{!"llvm.loop.mustprogress"}


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