; LLVM IR from sbischoff-ai/simple-molecular-dynamics :: SimpleMolecularDynamics/SimpleMolecularDynamics/mat.ll (ZN3matD2Ev)

; 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"

%class.mat = type { ptr, i32, i32 }
%class.vec = type <{ ptr, i32, [4 x i8] }>

; Function Attrs: nounwind
declare void @_ZN3vecD1Ev(ptr noundef nonnull align 8 dereferenceable(12)) unnamed_addr #0

; Function Attrs: nobuiltin nounwind
declare void @_ZdaPvm(ptr noundef, i64 noundef) #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN3matD2Ev(ptr noundef nonnull align 8 dereferenceable(16) %0) unnamed_addr #2 align 2 {
  %2 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %3 = load ptr, ptr %2, align 8
  %4 = getelementptr inbounds %class.mat, ptr %3, i32 0, i32 0
  %5 = load ptr, ptr %4, align 8, !tbaa !9
  %6 = icmp ne ptr %5, null
  br i1 %6, label %7, label %24

7:                                                ; preds = %1
  %8 = getelementptr inbounds %class.mat, ptr %3, i32 0, i32 0
  %9 = load ptr, ptr %8, align 8, !tbaa !9
  %10 = icmp eq ptr %9, null
  br i1 %10, label %23, label %11

11:                                               ; preds = %7
  %12 = getelementptr inbounds i8, ptr %9, i64 -8
  %13 = load i64, ptr %12, align 8
  %14 = getelementptr inbounds %class.vec, ptr %9, i64 %13
  %15 = icmp eq ptr %9, %14
  br i1 %15, label %20, label %16

16:                                               ; preds = %16, %11
  %17 = phi ptr [ %14, %11 ], [ %18, %16 ]
  %18 = getelementptr inbounds %class.vec, ptr %17, i64 -1
  call void @_ZN3vecD1Ev(ptr noundef nonnull align 8 dereferenceable(12) %18) #3
  %19 = icmp eq ptr %18, %9
  br i1 %19, label %20, label %16

20:                                               ; preds = %16, %11
  %21 = mul i64 16, %13
  %22 = add i64 %21, 8
  call void @_ZdaPvm(ptr noundef %12, i64 noundef %22) #4
  br label %23

23:                                               ; preds = %20, %7
  br label %24

24:                                               ; preds = %23, %1
  ret void
}

attributes #0 = { 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 #1 = { nobuiltin 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 = { 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 #3 = { nounwind }
attributes #4 = { builtin 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 = !{!10, !6, i64 0}
!10 = !{!"_ZTS3mat", !6, i64 0, !11, i64 8, !11, i64 12}
!11 = !{!"int", !7, i64 0}


; 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"

%class.vec = type <{ ptr, i32, [4 x i8] }>

; Function Attrs: nounwind
declare void @_ZN3vecD1Ev(ptr noundef nonnull align 8 dereferenceable(12)) unnamed_addr #0

; Function Attrs: nobuiltin nounwind
declare void @_ZdaPvm(ptr noundef, i64 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN3matD2Ev(ptr nocapture noundef nonnull readonly align 8 dereferenceable(16) %0) unnamed_addr #2 align 2 {
  %2 = load ptr, ptr %0, align 8, !tbaa !5
  %.not = icmp eq ptr %2, null
  br i1 %.not, label %13, label %3

3:                                                ; preds = %1
  %4 = getelementptr inbounds i8, ptr %2, i64 -8
  %5 = load i64, ptr %4, align 8
  %6 = icmp eq i64 %5, 0
  br i1 %6, label %.loopexit, label %.preheader.preheader

.preheader.preheader:                             ; preds = %3
  %7 = getelementptr inbounds %class.vec, ptr %2, i64 %5
  br label %.preheader

.preheader:                                       ; preds = %.preheader.preheader, %.preheader
  %8 = phi ptr [ %9, %.preheader ], [ %7, %.preheader.preheader ]
  %9 = getelementptr inbounds i8, ptr %8, i64 -16
  tail call void @_ZN3vecD1Ev(ptr noundef nonnull align 8 dereferenceable(12) %9) #3
  %10 = icmp eq ptr %9, %2
  br i1 %10, label %.loopexit, label %.preheader

.loopexit:                                        ; preds = %.preheader, %3
  %11 = shl i64 %5, 4
  %12 = or disjoint i64 %11, 8
  tail call void @_ZdaPvm(ptr noundef nonnull %4, i64 noundef %12) #4
  br label %13

13:                                               ; preds = %.loopexit, %1
  ret void
}

attributes #0 = { 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 #1 = { nobuiltin 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 = { 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 #3 = { nounwind }
attributes #4 = { builtin 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 0}
!6 = !{!"_ZTS3mat", !7, i64 0, !10, i64 8, !10, i64 12}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}


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