; LLVM IR from atlantis13579/Riemann :: Src/Solver/NumericalODESolver.ll (ZN18NumericalODESolver15SymplecticEuler9IntegrateEfiPf)

; 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.NumericalODESolver::SymplecticEuler" = type <{ %"class.std::function.0", float, [4 x i8] }>
%"class.std::function.0" = type { %"class.std::_Function_base", ptr }
%"class.std::_Function_base" = type { %"union.std::_Any_data", ptr }
%"union.std::_Any_data" = type { %"union.std::_Nocopy_types" }
%"union.std::_Nocopy_types" = type { { i64, i64 } }

; 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 speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #1

; 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
define dso_local void @_ZN18NumericalODESolver15SymplecticEuler9IntegrateEfiPf(ptr noundef nonnull align 8 dereferenceable(36) %0, float noundef %1, i32 noundef %2, ptr noundef %3) #2 align 2 {
  %5 = alloca ptr, align 8
  %6 = alloca float, align 4
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store float %1, ptr %6, align 4, !tbaa !9
  store i32 %2, ptr %7, align 4, !tbaa !11
  store ptr %3, ptr %8, align 8, !tbaa !5
  %10 = load ptr, ptr %5, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #3
  store i32 0, ptr %9, align 4, !tbaa !11
  br label %11

11:                                               ; preds = %34, %4
  %12 = load i32, ptr %9, align 4, !tbaa !11
  %13 = load i32, ptr %7, align 4, !tbaa !11
  %14 = icmp slt i32 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #3
  br label %37

16:                                               ; preds = %11
  %17 = load ptr, ptr %8, align 8, !tbaa !5
  %18 = load i32, ptr %9, align 4, !tbaa !11
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds float, ptr %17, i64 %19
  %21 = load float, ptr %20, align 4, !tbaa !9
  %22 = getelementptr inbounds %"class.NumericalODESolver::SymplecticEuler", ptr %10, i32 0, i32 0
  %23 = load ptr, ptr %8, align 8, !tbaa !5
  %24 = load i32, ptr %9, align 4, !tbaa !11
  %25 = getelementptr inbounds %"class.NumericalODESolver::SymplecticEuler", ptr %10, i32 0, i32 1
  %26 = load float, ptr %25, align 8, !tbaa !13
  %27 = call noundef float @_ZNKSt8functionIFfPKfifEEclES1_if(ptr noundef nonnull align 8 dereferenceable(32) %22, ptr noundef %23, i32 noundef %24, float noundef %26)
  %28 = load float, ptr %6, align 4, !tbaa !9
  %29 = call float @llvm.fmuladd.f32(float %27, float %28, float %21)
  %30 = load ptr, ptr %8, align 8, !tbaa !5
  %31 = load i32, ptr %9, align 4, !tbaa !11
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds float, ptr %30, i64 %32
  store float %29, ptr %33, align 4, !tbaa !9
  br label %34

34:                                               ; preds = %16
  %35 = load i32, ptr %9, align 4, !tbaa !11
  %36 = add nsw i32 %35, 1
  store i32 %36, ptr %9, align 4, !tbaa !11
  br label %11, !llvm.loop !17

37:                                               ; preds = %15
  %38 = load float, ptr %6, align 4, !tbaa !9
  %39 = getelementptr inbounds %"class.NumericalODESolver::SymplecticEuler", ptr %10, i32 0, i32 1
  %40 = load float, ptr %39, align 8, !tbaa !13
  %41 = fadd float %40, %38
  store float %41, ptr %39, align 8, !tbaa !13
  ret void
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef float @_ZNKSt8functionIFfPKfifEEclES1_if(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, i32 noundef, float noundef) #2 align 2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #2 = { 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 #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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"float", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!14, !10, i64 32}
!14 = !{!"_ZTSN18NumericalODESolver15SymplecticEulerE", !15, i64 0, !10, i64 32}
!15 = !{!"_ZTSSt8functionIFfPKfifEE", !16, i64 0, !6, i64 24}
!16 = !{!"_ZTSSt14_Function_base", !7, i64 0, !6, i64 16}
!17 = distinct !{!17, !18}
!18 = !{!"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"

; Function Attrs: mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare float @llvm.fmuladd.f32(float, float, float) #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN18NumericalODESolver15SymplecticEuler9IntegrateEfiPf(ptr noundef nonnull align 8 dereferenceable(36) %0, float noundef %1, i32 noundef %2, ptr noundef %3) local_unnamed_addr #1 align 2 {
  %5 = icmp sgt i32 %2, 0
  br i1 %5, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %4
  %6 = getelementptr inbounds i8, ptr %0, i64 32
  %wide.trip.count = zext nneg i32 %2 to i64
  br label %10

._crit_edge:                                      ; preds = %10, %4
  %7 = getelementptr inbounds i8, ptr %0, i64 32
  %8 = load float, ptr %7, align 8, !tbaa !5
  %9 = fadd float %8, %1
  store float %9, ptr %7, align 8, !tbaa !5
  ret void

10:                                               ; preds = %.lr.ph, %10
  %indvars.iv = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next, %10 ]
  %11 = getelementptr inbounds float, ptr %3, i64 %indvars.iv
  %12 = load float, ptr %11, align 4, !tbaa !13
  %13 = load float, ptr %6, align 8, !tbaa !5
  %14 = trunc nuw nsw i64 %indvars.iv to i32
  %15 = tail call noundef float @_ZNKSt8functionIFfPKfifEEclES1_if(ptr noundef nonnull align 8 dereferenceable(32) %0, ptr noundef %3, i32 noundef %14, float noundef %13)
  %16 = tail call float @llvm.fmuladd.f32(float %15, float %1, float %12)
  store float %16, ptr %11, align 4, !tbaa !13
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %10, !llvm.loop !14
}

; Function Attrs: mustprogress uwtable
declare dso_local noundef float @_ZNKSt8functionIFfPKfifEEclES1_if(ptr noundef nonnull align 8 dereferenceable(32), ptr noundef, i32 noundef, float noundef) local_unnamed_addr #1 align 2

attributes #0 = { mustprogress nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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" }

!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, !12, i64 32}
!6 = !{!"_ZTSN18NumericalODESolver15SymplecticEulerE", !7, i64 0, !12, i64 32}
!7 = !{!"_ZTSSt8functionIFfPKfifEE", !8, i64 0, !11, i64 24}
!8 = !{!"_ZTSSt14_Function_base", !9, i64 0, !11, i64 16}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C++ TBAA"}
!11 = !{!"any pointer", !9, i64 0}
!12 = !{!"float", !9, i64 0}
!13 = !{!12, !12, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass