; LLVM IR from apple/turicreate :: src/external/boost/boost_1_68_0/tools/build/src/engine/boehm_gc/tests (main)

; 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"

@GC_all_interior_pointers = external global i32, align 4
@.str = external hidden unnamed_addr constant [24 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr %2) #3
  store i32 0, ptr @GC_all_interior_pointers, align 4, !tbaa !5
  call void @GC_init()
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %3

3:                                                ; preds = %9, %0
  %4 = load i32, ptr %2, align 4, !tbaa !5
  %5 = icmp slt i32 %4, 20000
  br i1 %5, label %6, label %12

6:                                                ; preds = %3
  %7 = call ptr @GC_malloc_atomic(i64 noundef 4096)
  %8 = call ptr @GC_malloc(i64 noundef 4096)
  br label %9

9:                                                ; preds = %6
  %10 = load i32, ptr %2, align 4, !tbaa !5
  %11 = add nsw i32 %10, 1
  store i32 %11, ptr %2, align 4, !tbaa !5
  br label %3, !llvm.loop !9

12:                                               ; preds = %3
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %13

13:                                               ; preds = %19, %12
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = icmp slt i32 %14, 20000
  br i1 %15, label %16, label %22

16:                                               ; preds = %13
  %17 = call ptr @GC_malloc_atomic(i64 noundef 2048)
  %18 = call ptr @GC_malloc(i64 noundef 2048)
  br label %19

19:                                               ; preds = %16
  %20 = load i32, ptr %2, align 4, !tbaa !5
  %21 = add nsw i32 %20, 1
  store i32 %21, ptr %2, align 4, !tbaa !5
  br label %13, !llvm.loop !11

22:                                               ; preds = %13
  %23 = call i64 @GC_get_heap_size()
  %24 = call i32 (ptr, ...) @printf(ptr noundef @.str, i64 noundef %23)
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  ret i32 0
}

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

declare void @GC_init() #2

declare ptr @GC_malloc_atomic(i64 noundef) #2

declare ptr @GC_malloc(i64 noundef) #2

declare i32 @printf(ptr noundef, ...) #2

declare i64 @GC_get_heap_size() #2

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

attributes #0 = { 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 #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; 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"

@GC_all_interior_pointers = external local_unnamed_addr global i32, align 4
@.str = external hidden unnamed_addr constant [24 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  store i32 0, ptr @GC_all_interior_pointers, align 4, !tbaa !5
  tail call void @GC_init() #3
  br label %1

1:                                                ; preds = %0, %1
  %.04 = phi i32 [ 0, %0 ], [ %4, %1 ]
  %2 = tail call ptr @GC_malloc_atomic(i64 noundef 4096) #3
  %3 = tail call ptr @GC_malloc(i64 noundef 4096) #3
  %4 = add nuw nsw i32 %.04, 1
  %exitcond.not = icmp eq i32 %4, 20000
  br i1 %exitcond.not, label %.preheader, label %1, !llvm.loop !9

.preheader:                                       ; preds = %1, %.preheader
  %.15 = phi i32 [ %7, %.preheader ], [ 0, %1 ]
  %5 = tail call ptr @GC_malloc_atomic(i64 noundef 2048) #3
  %6 = tail call ptr @GC_malloc(i64 noundef 2048) #3
  %7 = add nuw nsw i32 %.15, 1
  %exitcond6.not = icmp eq i32 %7, 20000
  br i1 %exitcond6.not, label %8, label %.preheader, !llvm.loop !11

8:                                                ; preds = %.preheader
  %9 = tail call i64 @GC_get_heap_size() #3
  %10 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i64 noundef %9)
  ret i32 0
}

declare void @GC_init() local_unnamed_addr #1

declare ptr @GC_malloc_atomic(i64 noundef) local_unnamed_addr #1

declare ptr @GC_malloc(i64 noundef) local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #2

declare i64 @GC_get_heap_size() local_unnamed_addr #1

attributes #0 = { 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 #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 = { nofree 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 #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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


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