; LLVM IR from zeux/meshoptimizer :: tools/vcachetuner.ll (Z10load_statePKcRSt6vectorI5StateSaIS2_EE)

; 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.State = type { [16 x float], [8 x float], float }

@.str.2 = 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

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt6vectorI5StateSaIS0_EE9push_backERKS0_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(100)) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_Z10load_statePKcRSt6vectorI5StateSaIS2_EE(ptr noundef %0, ptr noundef nonnull align 8 dereferenceable(24) %1) #1 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca %struct.State, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #4
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = call noalias ptr @fopen(ptr noundef %9, ptr noundef @.str.2)
  store ptr %10, ptr %6, align 8, !tbaa !5
  %11 = load ptr, ptr %6, align 8, !tbaa !5
  %12 = icmp ne ptr %11, null
  br i1 %12, label %14, label %13

13:                                               ; preds = %2
  store i1 false, ptr %3, align 1
  store i32 1, ptr %7, align 4
  br label %25

14:                                               ; preds = %2
  call void @llvm.lifetime.start.p0(i64 100, ptr %8) #4
  %15 = load ptr, ptr %5, align 8, !tbaa !5
  call void @_ZNSt6vectorI5StateSaIS0_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) %15) #4
  br label %16

16:                                               ; preds = %20, %14
  %17 = load ptr, ptr %6, align 8, !tbaa !5
  %18 = call i64 @fread(ptr noundef %8, i64 noundef 100, i64 noundef 1, ptr noundef %17)
  %19 = icmp eq i64 %18, 1
  br i1 %19, label %20, label %22

20:                                               ; preds = %16
  %21 = load ptr, ptr %5, align 8, !tbaa !5
  call void @_ZNSt6vectorI5StateSaIS0_EE9push_backERKS0_(ptr noundef nonnull align 8 dereferenceable(24) %21, ptr noundef nonnull align 4 dereferenceable(100) %8)
  br label %16, !llvm.loop !9

22:                                               ; preds = %16
  %23 = load ptr, ptr %6, align 8, !tbaa !5
  %24 = call i32 @fclose(ptr noundef %23)
  store i1 true, ptr %3, align 1
  store i32 1, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 100, ptr %8) #4
  br label %25

25:                                               ; preds = %22, %13
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #4
  %26 = load i1, ptr %3, align 1
  ret i1 %26
}

declare noalias ptr @fopen(ptr noundef, ptr noundef) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorI5StateSaIS0_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) #3 align 2

declare i64 @fread(ptr noundef, i64 noundef, i64 noundef, ptr noundef) #2

declare i32 @fclose(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 = { mustprogress 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 #4 = { 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 = distinct !{!9, !10}
!10 = !{!"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"

%struct.State = type { [16 x float], [8 x float], float }

@.str.2 = external hidden unnamed_addr constant [3 x i8], align 1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress 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 @_ZNSt6vectorI5StateSaIS0_EE9push_backERKS0_(ptr noundef nonnull align 8 dereferenceable(24), ptr noundef nonnull align 4 dereferenceable(100)) local_unnamed_addr #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef zeroext i1 @_Z10load_statePKcRSt6vectorI5StateSaIS2_EE(ptr nocapture noundef readonly %0, ptr noundef nonnull align 8 dereferenceable(24) %1) local_unnamed_addr #1 {
  %3 = alloca %struct.State, align 4
  %4 = tail call noalias ptr @fopen(ptr noundef %0, ptr noundef nonnull @.str.2)
  %.not = icmp ne ptr %4, null
  br i1 %.not, label %5, label %11

5:                                                ; preds = %2
  call void @llvm.lifetime.start.p0(i64 100, ptr nonnull %3) #4
  tail call void @_ZNSt6vectorI5StateSaIS0_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24) %1) #4
  %6 = call i64 @fread(ptr noundef nonnull %3, i64 noundef 100, i64 noundef 1, ptr noundef nonnull %4)
  %7 = icmp eq i64 %6, 1
  br i1 %7, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %5, %.lr.ph
  call void @_ZNSt6vectorI5StateSaIS0_EE9push_backERKS0_(ptr noundef nonnull align 8 dereferenceable(24) %1, ptr noundef nonnull align 4 dereferenceable(100) %3)
  %8 = call i64 @fread(ptr noundef nonnull %3, i64 noundef 100, i64 noundef 1, ptr noundef nonnull %4)
  %9 = icmp eq i64 %8, 1
  br i1 %9, label %.lr.ph, label %._crit_edge, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %5
  %10 = call i32 @fclose(ptr noundef nonnull %4)
  call void @llvm.lifetime.end.p0(i64 100, ptr nonnull %3) #4
  br label %11

11:                                               ; preds = %2, %._crit_edge
  ret i1 %.not
}

; Function Attrs: nofree nounwind
declare noalias noundef ptr @fopen(ptr nocapture noundef readonly, ptr nocapture noundef readonly) local_unnamed_addr #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt6vectorI5StateSaIS0_EE5clearEv(ptr noundef nonnull align 8 dereferenceable(24)) local_unnamed_addr #3 align 2

; Function Attrs: nofree nounwind
declare noundef i64 @fread(ptr nocapture noundef, i64 noundef, i64 noundef, ptr nocapture noundef) local_unnamed_addr #2

; Function Attrs: nofree nounwind
declare noundef i32 @fclose(ptr nocapture noundef) local_unnamed_addr #2

attributes #0 = { mustprogress 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 = { 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 #3 = { mustprogress 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 #4 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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