; LLVM IR from openssl/openssl :: crypto/ml_dsa (ml_dsa_params)

; 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.ml_dsa_params_st = type { ptr, i32, i32, i32, i32, i32, i64, i64, i32, i32, i32, i32, i64, i64, i64 }

@ml_dsa_params = external hidden constant [4 x %struct.ml_dsa_params_st], align 16

; Function Attrs: nounwind uwtable
define dso_local ptr @ossl_ml_dsa_params_get(i32 noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #2
  store ptr @ml_dsa_params, ptr %4, align 8, !tbaa !9
  br label %6

6:                                                ; preds = %20, %1
  %7 = load ptr, ptr %4, align 8, !tbaa !9
  %8 = getelementptr inbounds %struct.ml_dsa_params_st, ptr %7, i32 0, i32 0
  %9 = load ptr, ptr %8, align 8, !tbaa !11
  %10 = icmp ne ptr %9, null
  br i1 %10, label %11, label %23

11:                                               ; preds = %6
  %12 = load ptr, ptr %4, align 8, !tbaa !9
  %13 = getelementptr inbounds %struct.ml_dsa_params_st, ptr %12, i32 0, i32 1
  %14 = load i32, ptr %13, align 8, !tbaa !14
  %15 = load i32, ptr %3, align 4, !tbaa !5
  %16 = icmp eq i32 %14, %15
  br i1 %16, label %17, label %19

17:                                               ; preds = %11
  %18 = load ptr, ptr %4, align 8, !tbaa !9
  store ptr %18, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %24

19:                                               ; preds = %11
  br label %20

20:                                               ; preds = %19
  %21 = load ptr, ptr %4, align 8, !tbaa !9
  %22 = getelementptr inbounds %struct.ml_dsa_params_st, ptr %21, i32 1
  store ptr %22, ptr %4, align 8, !tbaa !9
  br label %6, !llvm.loop !15

23:                                               ; preds = %6
  store ptr null, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %24

24:                                               ; preds = %23, %17
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #2
  %25 = load ptr, ptr %2, align 8
  ret ptr %25
}

; 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

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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"ml_dsa_params_st", !10, i64 0, !6, i64 8, !6, i64 12, !6, i64 16, !6, i64 20, !6, i64 24, !13, i64 32, !13, i64 40, !6, i64 48, !6, i64 52, !6, i64 56, !6, i64 60, !13, i64 64, !13, i64 72, !13, i64 80}
!13 = !{!"long", !7, i64 0}
!14 = !{!12, !6, 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.ml_dsa_params_st = type { ptr, i32, i32, i32, i32, i32, i64, i64, i32, i32, i32, i32, i64, i64, i64 }

@ml_dsa_params = external hidden constant [4 x %struct.ml_dsa_params_st], align 16

; Function Attrs: nofree norecurse nosync nounwind memory(none) uwtable
define dso_local noundef ptr @ossl_ml_dsa_params_get(i32 noundef %0) local_unnamed_addr #0 {
  %2 = load ptr, ptr @ml_dsa_params, align 16, !tbaa !5
  %.not6 = icmp eq ptr %2, null
  br i1 %.not6, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1, %6
  %.07 = phi ptr [ %7, %6 ], [ @ml_dsa_params, %1 ]
  %3 = getelementptr inbounds i8, ptr %.07, i64 8
  %4 = load i32, ptr %3, align 8, !tbaa !12
  %5 = icmp eq i32 %4, %0
  br i1 %5, label %._crit_edge, label %6

6:                                                ; preds = %.lr.ph
  %7 = getelementptr inbounds i8, ptr %.07, i64 88
  %8 = load ptr, ptr %7, align 8, !tbaa !5
  %.not = icmp eq ptr %8, null
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !13

._crit_edge:                                      ; preds = %.lr.ph, %6, %1
  %.05 = phi ptr [ null, %1 ], [ null, %6 ], [ %.07, %.lr.ph ]
  ret ptr %.05
}

attributes #0 = { nofree norecurse nosync nounwind memory(none) 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, !7, i64 0}
!6 = !{!"ml_dsa_params_st", !7, i64 0, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !10, i64 24, !11, i64 32, !11, i64 40, !10, i64 48, !10, i64 52, !10, i64 56, !10, i64 60, !11, i64 64, !11, i64 72, !11, i64 80}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"long", !8, i64 0}
!12 = !{!6, !10, i64 8}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


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