; LLVM IR from Dimandragon/non-parametric-dsp :: alglib-cpp/src/alglibinternal.ll (ZN11alglib_impl11traceanglesElPNS_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"

@.str.43 = external hidden unnamed_addr constant [2 x i8], align 1

; 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

declare void @_ZN11alglib_impl8ae_traceEPKcz(ptr noundef, ...) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11alglib_impl11traceanglesElPNS_8ae_stateE(i64 noundef %0, ptr noundef %1) #2 {
  %3 = alloca i64, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  store i64 %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  store i64 0, ptr %5, align 8, !tbaa !5
  br label %6

6:                                                ; preds = %12, %2
  %7 = load i64, ptr %5, align 8, !tbaa !5
  %8 = load i64, ptr %3, align 8, !tbaa !5
  %9 = sub nsw i64 %8, 1
  %10 = icmp sle i64 %7, %9
  br i1 %10, label %11, label %15

11:                                               ; preds = %6
  call void (ptr, ...) @_ZN11alglib_impl8ae_traceEPKcz(ptr noundef @.str.43)
  br label %12

12:                                               ; preds = %11
  %13 = load i64, ptr %5, align 8, !tbaa !5
  %14 = add nsw i64 %13, 1
  store i64 %14, ptr %5, align 8, !tbaa !5
  br label %6, !llvm.loop !11

15:                                               ; preds = %6
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 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 = !{!"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}
!11 = distinct !{!11, !12}
!12 = !{!"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"

@.str.43 = external hidden unnamed_addr constant [2 x i8], align 1

declare void @_ZN11alglib_impl8ae_traceEPKcz(ptr noundef, ...) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN11alglib_impl11traceanglesElPNS_8ae_stateE(i64 noundef %0, ptr nocapture noundef readnone %1) local_unnamed_addr #1 {
  %.not.not3 = icmp sgt i64 %0, 0
  br i1 %.not.not3, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.04 = phi i64 [ %3, %.lr.ph ], [ 0, %2 ]
  tail call void (ptr, ...) @_ZN11alglib_impl8ae_traceEPKcz(ptr noundef nonnull @.str.43)
  %3 = add nuw nsw i64 %.04, 1
  %exitcond.not = icmp eq i64 %3, %0
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

._crit_edge:                                      ; preds = %.lr.ph, %2
  ret void
}

attributes #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 = { 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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