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

; 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"

; 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 i64 @ggml_backend_dev_count() #1

; Function Attrs: mustprogress uwtable
declare dso_local ptr @ggml_backend_dev_get(i64 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local ptr @ggml_backend_dev_by_type(i32 noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i64, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  store i32 %0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store i64 0, ptr %4, align 8, !tbaa !9
  br label %7

7:                                                ; preds = %25, %1
  %8 = load i64, ptr %4, align 8, !tbaa !9
  %9 = call i64 @ggml_backend_dev_count()
  %10 = icmp ult i64 %8, %9
  br i1 %10, label %12, label %11

11:                                               ; preds = %7
  store i32 2, ptr %5, align 4
  br label %28

12:                                               ; preds = %7
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %13 = load i64, ptr %4, align 8, !tbaa !9
  %14 = call ptr @ggml_backend_dev_get(i64 noundef %13)
  store ptr %14, ptr %6, align 8, !tbaa !11
  %15 = load ptr, ptr %6, align 8, !tbaa !11
  %16 = call i32 @ggml_backend_dev_type(ptr noundef %15)
  %17 = load i32, ptr %3, align 4, !tbaa !5
  %18 = icmp eq i32 %16, %17
  br i1 %18, label %19, label %21

19:                                               ; preds = %12
  %20 = load ptr, ptr %6, align 8, !tbaa !11
  store ptr %20, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %22

21:                                               ; preds = %12
  store i32 0, ptr %5, align 4
  br label %22

22:                                               ; preds = %21, %19
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  %23 = load i32, ptr %5, align 4
  switch i32 %23, label %28 [
    i32 0, label %24
  ]

24:                                               ; preds = %22
  br label %25

25:                                               ; preds = %24
  %26 = load i64, ptr %4, align 8, !tbaa !9
  %27 = add i64 %26, 1
  store i64 %27, ptr %4, align 8, !tbaa !9
  br label %7, !llvm.loop !13

28:                                               ; preds = %22, %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  %29 = load i32, ptr %5, align 4
  switch i32 %29, label %33 [
    i32 2, label %30
    i32 1, label %31
  ]

30:                                               ; preds = %28
  store ptr null, ptr %2, align 8
  br label %31

31:                                               ; preds = %30, %28
  %32 = load ptr, ptr %2, align 8
  ret ptr %32

33:                                               ; preds = %28
  unreachable
}

declare i32 @ggml_backend_dev_type(ptr noundef) #2

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 = { "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 = !{!"_ZTS21ggml_backend_dev_type", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"any pointer", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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 i64 @ggml_backend_dev_count() local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
declare dso_local ptr @ggml_backend_dev_get(i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local noundef ptr @ggml_backend_dev_by_type(i32 noundef %0) local_unnamed_addr #0 {
  %2 = tail call i64 @ggml_backend_dev_count()
  %.not1112.not = icmp eq i64 %2, 0
  br i1 %.not1112.not, label %._crit_edge, label %.lr.ph

3:                                                ; preds = %.lr.ph
  %4 = add nuw i64 %.01013, 1
  %5 = tail call i64 @ggml_backend_dev_count()
  %.not11 = icmp ult i64 %4, %5
  br i1 %.not11, label %.lr.ph, label %._crit_edge, !llvm.loop !5

.lr.ph:                                           ; preds = %1, %3
  %.01013 = phi i64 [ %4, %3 ], [ 0, %1 ]
  %6 = tail call ptr @ggml_backend_dev_get(i64 noundef %.01013)
  %7 = tail call i32 @ggml_backend_dev_type(ptr noundef %6)
  %.not = icmp eq i32 %7, %0
  br i1 %.not, label %._crit_edge, label %3

._crit_edge:                                      ; preds = %.lr.ph, %3, %1
  %spec.select = phi ptr [ null, %1 ], [ null, %3 ], [ %6, %.lr.ph ]
  ret ptr %spec.select
}

declare i32 @ggml_backend_dev_type(ptr noundef) local_unnamed_addr #1

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" }
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" }

!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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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