; LLVM IR from Dimandragon/non-parametric-dsp :: alglib-cpp/src/alglibinternal.ll (ZN11alglib_impl5imax4EllllPNS_8ae_stateE)

; 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"

; 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 i64 @_ZN11alglib_impl5imax4EllllPNS_8ae_stateE(i64 noundef %0, i64 noundef %1, i64 noundef %2, i64 noundef %3, ptr noundef %4) #1 {
  %6 = alloca i64, align 8
  %7 = alloca i64, align 8
  %8 = alloca i64, align 8
  %9 = alloca i64, align 8
  %10 = alloca ptr, align 8
  %11 = alloca i64, align 8
  store i64 %0, ptr %6, align 8, !tbaa !5
  store i64 %1, ptr %7, align 8, !tbaa !5
  store i64 %2, ptr %8, align 8, !tbaa !5
  store i64 %3, ptr %9, align 8, !tbaa !5
  store ptr %4, ptr %10, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #2
  %12 = load i64, ptr %6, align 8, !tbaa !5
  store i64 %12, ptr %11, align 8, !tbaa !5
  %13 = load i64, ptr %7, align 8, !tbaa !5
  %14 = load i64, ptr %11, align 8, !tbaa !5
  %15 = icmp sgt i64 %13, %14
  br i1 %15, label %16, label %18

16:                                               ; preds = %5
  %17 = load i64, ptr %7, align 8, !tbaa !5
  store i64 %17, ptr %11, align 8, !tbaa !5
  br label %18

18:                                               ; preds = %16, %5
  %19 = load i64, ptr %8, align 8, !tbaa !5
  %20 = load i64, ptr %11, align 8, !tbaa !5
  %21 = icmp sgt i64 %19, %20
  br i1 %21, label %22, label %24

22:                                               ; preds = %18
  %23 = load i64, ptr %8, align 8, !tbaa !5
  store i64 %23, ptr %11, align 8, !tbaa !5
  br label %24

24:                                               ; preds = %22, %18
  %25 = load i64, ptr %9, align 8, !tbaa !5
  %26 = load i64, ptr %11, align 8, !tbaa !5
  %27 = icmp sgt i64 %25, %26
  br i1 %27, label %28, label %30

28:                                               ; preds = %24
  %29 = load i64, ptr %9, align 8, !tbaa !5
  store i64 %29, ptr %11, align 8, !tbaa !5
  br label %30

30:                                               ; preds = %28, %24
  %31 = load i64, ptr %11, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #2
  ret i64 %31
}

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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !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"

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) uwtable
define dso_local noundef i64 @_ZN11alglib_impl5imax4EllllPNS_8ae_stateE(i64 noundef %0, i64 noundef %1, i64 noundef %2, i64 noundef %3, ptr nocapture noundef readnone %4) local_unnamed_addr #0 {
  %spec.select = tail call i64 @llvm.smax.i64(i64 %1, i64 %0)
  %.1 = tail call i64 @llvm.smax.i64(i64 %spec.select, i64 %2)
  %.2 = tail call i64 @llvm.smax.i64(i64 %.1, i64 %3)
  ret i64 %.2
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.smax.i64(i64, i64) #1

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

!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)"}


; Effective O3 passes: GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass