; LLVM IR from iostapyshyn/gravity :: physics (particles_clear)

; 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.particle = type { double, double, double, double, double, [3 x double] }
%union.pthread_mutex_t = type { %struct.__pthread_mutex_s }
%struct.__pthread_mutex_s = type { i32, i32, i32, i32, i32, i16, i16, %struct.__pthread_internal_list }
%struct.__pthread_internal_list = type { ptr, ptr }

@array = external dso_local global <{ %struct.particle, %struct.particle, %struct.particle, [117 x %struct.particle] }>, align 16
@lock = external dso_local global %union.pthread_mutex_t, align 8

; Function Attrs: nounwind uwtable
declare dso_local void @update() #0

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

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

; Function Attrs: nounwind
declare i32 @pthread_mutex_lock(ptr noundef) #2

; Function Attrs: nounwind
declare i32 @pthread_mutex_unlock(ptr noundef) #2

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

3:                                                ; preds = %12, %0
  %4 = load i32, ptr %1, align 4, !tbaa !5
  %5 = icmp slt i32 %4, 120
  br i1 %5, label %7, label %6

6:                                                ; preds = %3
  call void @llvm.lifetime.end.p0(i64 4, ptr %1) #3
  br label %15

7:                                                ; preds = %3
  %8 = load i32, ptr %1, align 4, !tbaa !5
  %9 = sext i32 %8 to i64
  %10 = getelementptr inbounds [120 x %struct.particle], ptr @array, i64 0, i64 %9
  %11 = getelementptr inbounds %struct.particle, ptr %10, i32 0, i32 4
  store double 0.000000e+00, ptr %11, align 16, !tbaa !9
  br label %12

12:                                               ; preds = %7
  %13 = load i32, ptr %1, align 4, !tbaa !5
  %14 = add nsw i32 %13, 1
  store i32 %14, ptr %1, align 4, !tbaa !5
  br label %3, !llvm.loop !12

15:                                               ; preds = %6
  %16 = call i32 @pthread_mutex_unlock(ptr noundef @lock) #3
  call void @update()
  ret void
}

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 = { 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 = { 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, !11, i64 32}
!10 = !{!"particle", !11, i64 0, !11, i64 8, !11, i64 16, !11, i64 24, !11, i64 32, !7, i64 40}
!11 = !{!"double", !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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.particle = type { double, double, double, double, double, [3 x double] }
%union.pthread_mutex_t = type { %struct.__pthread_mutex_s }
%struct.__pthread_mutex_s = type { i32, i32, i32, i32, i32, i16, i16, %struct.__pthread_internal_list }
%struct.__pthread_internal_list = type { ptr, ptr }

@array = external dso_local local_unnamed_addr global <{ %struct.particle, %struct.particle, %struct.particle, [117 x %struct.particle] }>, align 16
@lock = external dso_local global %union.pthread_mutex_t, align 8

; Function Attrs: nounwind uwtable
declare dso_local void @update() local_unnamed_addr #0

; Function Attrs: nounwind
declare i32 @pthread_mutex_lock(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind
declare i32 @pthread_mutex_unlock(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @particles_clear() local_unnamed_addr #0 {
  %1 = tail call i32 @pthread_mutex_lock(ptr noundef nonnull @lock) #2
  br label %4

2:                                                ; preds = %4
  %3 = tail call i32 @pthread_mutex_unlock(ptr noundef nonnull @lock) #2
  tail call void @update()
  ret void

4:                                                ; preds = %4, %0
  %indvars.iv = phi i64 [ 0, %0 ], [ %indvars.iv.next.5, %4 ]
  %5 = getelementptr inbounds [120 x %struct.particle], ptr @array, i64 0, i64 %indvars.iv, i32 4
  store double 0.000000e+00, ptr %5, align 16, !tbaa !5
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %6 = getelementptr inbounds [120 x %struct.particle], ptr @array, i64 0, i64 %indvars.iv.next, i32 4
  store double 0.000000e+00, ptr %6, align 16, !tbaa !5
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %7 = getelementptr inbounds [120 x %struct.particle], ptr @array, i64 0, i64 %indvars.iv.next.1, i32 4
  store double 0.000000e+00, ptr %7, align 16, !tbaa !5
  %indvars.iv.next.2 = add nuw nsw i64 %indvars.iv, 3
  %8 = getelementptr inbounds [120 x %struct.particle], ptr @array, i64 0, i64 %indvars.iv.next.2, i32 4
  store double 0.000000e+00, ptr %8, align 16, !tbaa !5
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %9 = getelementptr inbounds [120 x %struct.particle], ptr @array, i64 0, i64 %indvars.iv.next.3, i32 4
  store double 0.000000e+00, ptr %9, align 16, !tbaa !5
  %indvars.iv.next.4 = add nuw nsw i64 %indvars.iv, 5
  %10 = getelementptr inbounds [120 x %struct.particle], ptr @array, i64 0, i64 %indvars.iv.next.4, i32 4
  store double 0.000000e+00, ptr %10, align 16, !tbaa !5
  %indvars.iv.next.5 = add nuw nsw i64 %indvars.iv, 6
  %exitcond.not.5 = icmp eq i64 %indvars.iv.next.5, 120
  br i1 %exitcond.not.5, label %2, label %4, !llvm.loop !10
}

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 = { 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 #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, !7, i64 32}
!6 = !{!"particle", !7, i64 0, !7, i64 8, !7, i64 16, !7, i64 24, !7, i64 32, !8, i64 40}
!7 = !{!"double", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass