; LLVM IR from MRPT/mrpt :: libs/math/src/CSparse (cs_load)

; 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"

@.str = external hidden unnamed_addr constant [11 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local ptr @cs_load(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca double, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = icmp ne ptr %9, null
  br i1 %10, label %12, label %11

11:                                               ; preds = %1
  store ptr null, ptr %2, align 8
  store i32 1, ptr %8, align 4
  br label %31

12:                                               ; preds = %1
  %13 = call ptr @cs_spalloc(i32 noundef 0, i32 noundef 0, i32 noundef 1, i32 noundef 1, i32 noundef 1)
  store ptr %13, ptr %7, align 8, !tbaa !5
  br label %14

14:                                               ; preds = %28, %12
  %15 = load ptr, ptr %3, align 8, !tbaa !5
  %16 = call i32 (ptr, ptr, ...) @__isoc99_fscanf(ptr noundef %15, ptr noundef @.str, ptr noundef %4, ptr noundef %5, ptr noundef %6)
  %17 = icmp eq i32 %16, 3
  br i1 %17, label %18, label %29

18:                                               ; preds = %14
  %19 = load ptr, ptr %7, align 8, !tbaa !5
  %20 = load i32, ptr %4, align 4, !tbaa !9
  %21 = load i32, ptr %5, align 4, !tbaa !9
  %22 = load double, ptr %6, align 8, !tbaa !11
  %23 = call i32 @cs_entry(ptr noundef %19, i32 noundef %20, i32 noundef %21, double noundef %22)
  %24 = icmp ne i32 %23, 0
  br i1 %24, label %28, label %25

25:                                               ; preds = %18
  %26 = load ptr, ptr %7, align 8, !tbaa !5
  %27 = call ptr @cs_spfree(ptr noundef %26)
  store ptr %27, ptr %2, align 8
  store i32 1, ptr %8, align 4
  br label %31

28:                                               ; preds = %18
  br label %14, !llvm.loop !13

29:                                               ; preds = %14
  %30 = load ptr, ptr %7, align 8, !tbaa !5
  store ptr %30, ptr %2, align 8
  store i32 1, ptr %8, align 4
  br label %31

31:                                               ; preds = %29, %25, %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #3
  %32 = load ptr, ptr %2, align 8
  ret ptr %32
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare ptr @cs_spalloc(i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef) #2

declare i32 @__isoc99_fscanf(ptr noundef, ptr noundef, ...) #2

declare i32 @cs_entry(ptr noundef, i32 noundef, i32 noundef, double noundef) #2

declare ptr @cs_spfree(ptr noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"double", !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"

@.str = external hidden unnamed_addr constant [11 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local ptr @cs_load(ptr noundef %0) local_unnamed_addr #0 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca double, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %.loopexit, label %5

5:                                                ; preds = %1
  %6 = tail call ptr @cs_spalloc(i32 noundef 0, i32 noundef 0, i32 noundef 1, i32 noundef 1, i32 noundef 1) #3
  br label %7

7:                                                ; preds = %10, %5
  %8 = call i32 (ptr, ptr, ...) @__isoc99_fscanf(ptr noundef nonnull %0, ptr noundef nonnull @.str, ptr noundef nonnull %2, ptr noundef nonnull %3, ptr noundef nonnull %4) #3
  %9 = icmp eq i32 %8, 3
  br i1 %9, label %10, label %.loopexit

10:                                               ; preds = %7
  %11 = load i32, ptr %2, align 4, !tbaa !5
  %12 = load i32, ptr %3, align 4, !tbaa !5
  %13 = load double, ptr %4, align 8, !tbaa !9
  %14 = call i32 @cs_entry(ptr noundef %6, i32 noundef %11, i32 noundef %12, double noundef %13) #3
  %.not7 = icmp eq i32 %14, 0
  br i1 %.not7, label %15, label %7, !llvm.loop !11

15:                                               ; preds = %10
  %16 = call ptr @cs_spfree(ptr noundef %6) #3
  br label %.loopexit

.loopexit:                                        ; preds = %7, %1, %15
  %.0 = phi ptr [ %16, %15 ], [ null, %1 ], [ %6, %7 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #3
  ret ptr %.0
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare ptr @cs_spalloc(i32 noundef, i32 noundef, i32 noundef, i32 noundef, i32 noundef) local_unnamed_addr #2

declare i32 @__isoc99_fscanf(ptr noundef, ptr noundef, ...) local_unnamed_addr #2

declare i32 @cs_entry(ptr noundef, i32 noundef, i32 noundef, double noundef) local_unnamed_addr #2

declare ptr @cs_spfree(ptr noundef) local_unnamed_addr #2

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"double", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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