; LLVM IR from mtsamis/box2d-optimized :: src/particle (b2_particle_system)

; 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.b2ParticleSystem::Proxy" = type { i32, 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 nounwind uwtable
define dso_local noundef zeroext i1 @_ZN16b2ParticleSystem19ProxyBufferHasIndexEiPKNS_5ProxyEi(i32 noundef %0, ptr noundef %1, i32 noundef %2) #1 align 2 {
  %4 = alloca i1, align 1
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store i32 %0, ptr %5, align 4, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 0, ptr %8, align 4, !tbaa !5
  br label %10

10:                                               ; preds = %26, %3
  %11 = load i32, ptr %8, align 4, !tbaa !5
  %12 = load i32, ptr %7, align 4, !tbaa !5
  %13 = icmp slt i32 %11, %12
  br i1 %13, label %15, label %14

14:                                               ; preds = %10
  store i32 2, ptr %9, align 4
  br label %29

15:                                               ; preds = %10
  %16 = load ptr, ptr %6, align 8, !tbaa !9
  %17 = load i32, ptr %8, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds %"struct.b2ParticleSystem::Proxy", ptr %16, i64 %18
  %20 = getelementptr inbounds %"struct.b2ParticleSystem::Proxy", ptr %19, i32 0, i32 0
  %21 = load i32, ptr %20, align 4, !tbaa !11
  %22 = load i32, ptr %5, align 4, !tbaa !5
  %23 = icmp eq i32 %21, %22
  br i1 %23, label %24, label %25

24:                                               ; preds = %15
  store i1 true, ptr %4, align 1
  store i32 1, ptr %9, align 4
  br label %29

25:                                               ; preds = %15
  br label %26

26:                                               ; preds = %25
  %27 = load i32, ptr %8, align 4, !tbaa !5
  %28 = add nsw i32 %27, 1
  store i32 %28, ptr %8, align 4, !tbaa !5
  br label %10, !llvm.loop !13

29:                                               ; preds = %24, %14
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  %30 = load i32, ptr %9, align 4
  switch i32 %30, label %34 [
    i32 2, label %31
    i32 1, label %32
  ]

31:                                               ; preds = %29
  store i1 false, ptr %4, align 1
  br label %32

32:                                               ; preds = %31, %29
  %33 = load i1, ptr %4, align 1
  ret i1 %33

34:                                               ; preds = %29
  unreachable
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !6, i64 0}
!12 = !{!"_ZTSN16b2ParticleSystem5ProxyE", !6, i64 0, !6, i64 4}
!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"

%"struct.b2ParticleSystem::Proxy" = type { i32, i32 }

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local noundef zeroext i1 @_ZN16b2ParticleSystem19ProxyBufferHasIndexEiPKNS_5ProxyEi(i32 noundef %0, ptr nocapture noundef readonly %1, i32 noundef %2) local_unnamed_addr #0 align 2 {
  %.not9 = icmp sgt i32 %2, 0
  br i1 %.not9, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %3
  %4 = zext nneg i32 %2 to i64
  %wide.trip.count = zext nneg i32 %2 to i64
  %5 = load i32, ptr %1, align 4, !tbaa !5
  %6 = icmp eq i32 %5, %0
  br i1 %6, label %._crit_edge, label %.lr.ph15

.lr.ph15:                                         ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv14 = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %.lr.ph.preheader ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv14, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge.loopexit, label %.lr.ph, !llvm.loop !10

.lr.ph:                                           ; preds = %.lr.ph15
  %7 = getelementptr inbounds %"struct.b2ParticleSystem::Proxy", ptr %1, i64 %indvars.iv.next
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %9 = icmp eq i32 %8, %0
  br i1 %9, label %._crit_edge.loopexit, label %.lr.ph15, !llvm.loop !10

._crit_edge.loopexit:                             ; preds = %.lr.ph15, %.lr.ph
  %.not.le = icmp ult i64 %indvars.iv.next, %4
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %.lr.ph.preheader, %3
  %.not.lcssa = phi i1 [ false, %3 ], [ true, %.lr.ph.preheader ], [ %.not.le, %._crit_edge.loopexit ]
  ret i1 %.not.lcssa
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) 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, !7, i64 0}
!6 = !{!"_ZTSN16b2ParticleSystem5ProxyE", !7, i64 0, !7, i64 4}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass