; LLVM IR from Montimage/mmt-security :: src/lib/mmt_alloc.ll (iterate_ring)

; 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._mmt_mem_pool_struct = type { i32, [12 x i8], i32, [12 x i8], i32, ptr }

; Function Attrs: nounwind uwtable
define dso_local void @_iterate_ring(ptr noundef %0, ptr noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  br label %5

5:                                                ; preds = %13, %2
  %6 = load ptr, ptr %3, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct._mmt_mem_pool_struct, ptr %6, i32 0, i32 0
  %8 = load i32, ptr %7, align 16, !tbaa !9
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct._mmt_mem_pool_struct, ptr %9, i32 0, i32 2
  %11 = load i32, ptr %10, align 16, !tbaa !12
  %12 = icmp ne i32 %8, %11
  br i1 %12, label %13, label %34

13:                                               ; preds = %5
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = load ptr, ptr %3, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct._mmt_mem_pool_struct, ptr %15, i32 0, i32 5
  %17 = load ptr, ptr %16, align 8, !tbaa !13
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct._mmt_mem_pool_struct, ptr %18, i32 0, i32 2
  %20 = load i32, ptr %19, align 16, !tbaa !12
  %21 = zext i32 %20 to i64
  %22 = getelementptr inbounds ptr, ptr %17, i64 %21
  %23 = load ptr, ptr %22, align 8, !tbaa !5
  call void %14(ptr noundef %23)
  %24 = load ptr, ptr %3, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct._mmt_mem_pool_struct, ptr %24, i32 0, i32 2
  %26 = load i32, ptr %25, align 16, !tbaa !12
  %27 = add i32 %26, 1
  %28 = load ptr, ptr %3, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct._mmt_mem_pool_struct, ptr %28, i32 0, i32 4
  %30 = load i32, ptr %29, align 16, !tbaa !14
  %31 = urem i32 %27, %30
  %32 = load ptr, ptr %3, align 8, !tbaa !5
  %33 = getelementptr inbounds %struct._mmt_mem_pool_struct, ptr %32, i32 0, i32 2
  store i32 %31, ptr %33, align 16, !tbaa !12
  br label %5, !llvm.loop !15

34:                                               ; preds = %5
  ret void
}

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" }

!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/C++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"_mmt_mem_pool_struct", !11, i64 0, !11, i64 16, !11, i64 32, !6, i64 40}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !11, i64 16}
!13 = !{!10, !6, i64 40}
!14 = !{!10, !11, i64 32}
!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"

; Function Attrs: nounwind uwtable
define dso_local void @_iterate_ring(ptr nocapture noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 16
  %4 = load i32, ptr %0, align 16, !tbaa !5
  %5 = load i32, ptr %3, align 16, !tbaa !11
  %.not8 = icmp eq i32 %4, %5
  br i1 %.not8, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %2
  %6 = getelementptr inbounds i8, ptr %0, i64 40
  %7 = getelementptr inbounds i8, ptr %0, i64 32
  br label %8

8:                                                ; preds = %.lr.ph, %8
  %9 = phi i32 [ %5, %.lr.ph ], [ %17, %8 ]
  %10 = load ptr, ptr %6, align 8, !tbaa !12
  %11 = zext i32 %9 to i64
  %12 = getelementptr inbounds ptr, ptr %10, i64 %11
  %13 = load ptr, ptr %12, align 8, !tbaa !13
  tail call void %1(ptr noundef %13) #1
  %14 = load i32, ptr %3, align 16, !tbaa !11
  %15 = add i32 %14, 1
  %16 = load i32, ptr %7, align 16, !tbaa !14
  %17 = urem i32 %15, %16
  store i32 %17, ptr %3, align 16, !tbaa !11
  %18 = load i32, ptr %0, align 16, !tbaa !5
  %.not = icmp eq i32 %18, %17
  br i1 %.not, label %._crit_edge, label %8, !llvm.loop !15

._crit_edge:                                      ; preds = %8, %2
  ret void
}

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 = { 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, !7, i64 0}
!6 = !{!"_mmt_mem_pool_struct", !7, i64 0, !7, i64 16, !7, i64 32, !10, i64 40}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !7, i64 16}
!12 = !{!6, !10, i64 40}
!13 = !{!10, !10, i64 0}
!14 = !{!6, !7, i64 32}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


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