; LLVM IR from rweather/lightweight-crypto :: src/combined (internal-subterranean)

; 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.subterranean_state_t = type { [9 x i32] }

; Function Attrs: nounwind uwtable
declare dso_local void @subterranean_round(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 @subterranean_blank(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  store i32 0, ptr %3, align 4, !tbaa !9
  br label %4

4:                                                ; preds = %14, %1
  %5 = load i32, ptr %3, align 4, !tbaa !9
  %6 = icmp ult i32 %5, 8
  br i1 %6, label %7, label %17

7:                                                ; preds = %4
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  call void @subterranean_round(ptr noundef %8)
  %9 = load ptr, ptr %2, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.subterranean_state_t, ptr %9, i32 0, i32 0
  %11 = getelementptr inbounds [9 x i32], ptr %10, i64 0, i64 0
  %12 = load i32, ptr %11, align 4, !tbaa !9
  %13 = xor i32 %12, 2
  store i32 %13, ptr %11, align 4, !tbaa !9
  br label %14

14:                                               ; preds = %7
  %15 = load i32, ptr %3, align 4, !tbaa !9
  %16 = add i32 %15, 1
  store i32 %16, ptr %3, align 4, !tbaa !9
  br label %4, !llvm.loop !11

17:                                               ; preds = %4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !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"

; Function Attrs: nounwind uwtable
declare dso_local void @subterranean_round(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @subterranean_blank(ptr noundef %0) local_unnamed_addr #0 {
  tail call void @subterranean_round(ptr noundef %0)
  %2 = load i32, ptr %0, align 4, !tbaa !5
  %3 = xor i32 %2, 2
  store i32 %3, ptr %0, align 4, !tbaa !5
  tail call void @subterranean_round(ptr noundef %0)
  %4 = load i32, ptr %0, align 4, !tbaa !5
  %5 = xor i32 %4, 2
  store i32 %5, ptr %0, align 4, !tbaa !5
  tail call void @subterranean_round(ptr noundef nonnull %0)
  %6 = load i32, ptr %0, align 4, !tbaa !5
  %7 = xor i32 %6, 2
  store i32 %7, ptr %0, align 4, !tbaa !5
  tail call void @subterranean_round(ptr noundef nonnull %0)
  %8 = load i32, ptr %0, align 4, !tbaa !5
  %9 = xor i32 %8, 2
  store i32 %9, ptr %0, align 4, !tbaa !5
  tail call void @subterranean_round(ptr noundef nonnull %0)
  %10 = load i32, ptr %0, align 4, !tbaa !5
  %11 = xor i32 %10, 2
  store i32 %11, ptr %0, align 4, !tbaa !5
  tail call void @subterranean_round(ptr noundef nonnull %0)
  %12 = load i32, ptr %0, align 4, !tbaa !5
  %13 = xor i32 %12, 2
  store i32 %13, ptr %0, align 4, !tbaa !5
  tail call void @subterranean_round(ptr noundef nonnull %0)
  %14 = load i32, ptr %0, align 4, !tbaa !5
  %15 = xor i32 %14, 2
  store i32 %15, ptr %0, align 4, !tbaa !5
  tail call void @subterranean_round(ptr noundef nonnull %0)
  %16 = load i32, ptr %0, align 4, !tbaa !5
  %17 = xor i32 %16, 2
  store i32 %17, ptr %0, align 4, !tbaa !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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LoopRotatePass,SROAPass,SimplifyCFGPass,TailCallElimPass