; LLVM IR from alex-s168/tpre :: tpre (tpre_errs_free)

; 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.tpre_errs_t = type { ptr, i64 }
%struct.tpre_err_t = type { i64, ptr }

; Function Attrs: nounwind
declare void @free(ptr noundef) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nounwind uwtable
define dso_local void @tpre_errs_free(ptr %0, i64 %1) #2 {
  %3 = alloca %struct.tpre_errs_t, align 8
  %4 = alloca i64, align 8
  %5 = getelementptr inbounds { ptr, i64 }, ptr %3, i32 0, i32 0
  store ptr %0, ptr %5, align 8
  %6 = getelementptr inbounds { ptr, i64 }, ptr %3, i32 0, i32 1
  store i64 %1, ptr %6, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  store i64 0, ptr %4, align 8, !tbaa !5
  br label %7

7:                                                ; preds = %19, %2
  %8 = load i64, ptr %4, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.tpre_errs_t, ptr %3, i32 0, i32 1
  %10 = load i64, ptr %9, align 8, !tbaa !9
  %11 = icmp ult i64 %8, %10
  br i1 %11, label %12, label %22

12:                                               ; preds = %7
  %13 = getelementptr inbounds %struct.tpre_errs_t, ptr %3, i32 0, i32 0
  %14 = load ptr, ptr %13, align 8, !tbaa !12
  %15 = load i64, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.tpre_err_t, ptr %14, i64 %15
  %17 = getelementptr inbounds %struct.tpre_err_t, ptr %16, i32 0, i32 1
  %18 = load ptr, ptr %17, align 8, !tbaa !13
  call void @free(ptr noundef %18) #3
  br label %19

19:                                               ; preds = %12
  %20 = load i64, ptr %4, align 8, !tbaa !5
  %21 = add i64 %20, 1
  store i64 %21, ptr %4, align 8, !tbaa !5
  br label %7, !llvm.loop !15

22:                                               ; preds = %7
  %23 = getelementptr inbounds %struct.tpre_errs_t, ptr %3, i32 0, i32 0
  %24 = load ptr, ptr %23, align 8, !tbaa !12
  call void @free(ptr noundef %24) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 }

!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/C++ TBAA"}
!9 = !{!10, !6, i64 8}
!10 = !{!"", !11, i64 0, !6, i64 8}
!11 = !{!"any pointer", !7, i64 0}
!12 = !{!10, !11, i64 0}
!13 = !{!14, !11, i64 8}
!14 = !{!"", !6, i64 0, !11, i64 8}
!15 = distinct !{!15, !16}
!16 = !{!"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.tpre_err_t = type { i64, ptr }

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @tpre_errs_free(ptr nocapture %0, i64 %1) local_unnamed_addr #1 {
  %.not = icmp eq i64 %1, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2, %.lr.ph
  %.04 = phi i64 [ %5, %.lr.ph ], [ 0, %2 ]
  %3 = getelementptr inbounds %struct.tpre_err_t, ptr %0, i64 %.04, i32 1
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  tail call void @free(ptr noundef %4) #2
  %5 = add nuw i64 %.04, 1
  %exitcond.not = icmp eq i64 %5, %1
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph, %2
  tail call void @free(ptr noundef %0) #2
  ret void
}

attributes #0 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { 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, !10, i64 8}
!6 = !{!"", !7, i64 0, !10, i64 8}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


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