; LLVM IR from square/subzero :: core/trezor-crypto/ed25519-donna (ed25519)

; 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"

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local void @curve25519_scalarmult(ptr noundef %0, ptr noundef %1, ptr noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca [32 x i8], align 16
  %8 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 32, ptr %7) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  store i64 0, ptr %8, align 8, !tbaa !9
  br label %9

9:                                                ; preds = %19, %3
  %10 = load i64, ptr %8, align 8, !tbaa !9
  %11 = icmp ult i64 %10, 32
  br i1 %11, label %12, label %22

12:                                               ; preds = %9
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = load i64, ptr %8, align 8, !tbaa !9
  %15 = getelementptr inbounds i8, ptr %13, i64 %14
  %16 = load i8, ptr %15, align 1, !tbaa !11
  %17 = load i64, ptr %8, align 8, !tbaa !9
  %18 = getelementptr inbounds [32 x i8], ptr %7, i64 0, i64 %17
  store i8 %16, ptr %18, align 1, !tbaa !11
  br label %19

19:                                               ; preds = %12
  %20 = load i64, ptr %8, align 8, !tbaa !9
  %21 = add i64 %20, 1
  store i64 %21, ptr %8, align 8, !tbaa !9
  br label %9, !llvm.loop !12

22:                                               ; preds = %9
  %23 = getelementptr inbounds [32 x i8], ptr %7, i64 0, i64 0
  %24 = load i8, ptr %23, align 16, !tbaa !11
  %25 = zext i8 %24 to i32
  %26 = and i32 %25, 248
  %27 = trunc i32 %26 to i8
  store i8 %27, ptr %23, align 16, !tbaa !11
  %28 = getelementptr inbounds [32 x i8], ptr %7, i64 0, i64 31
  %29 = load i8, ptr %28, align 1, !tbaa !11
  %30 = zext i8 %29 to i32
  %31 = and i32 %30, 127
  %32 = trunc i32 %31 to i8
  store i8 %32, ptr %28, align 1, !tbaa !11
  %33 = getelementptr inbounds [32 x i8], ptr %7, i64 0, i64 31
  %34 = load i8, ptr %33, align 1, !tbaa !11
  %35 = zext i8 %34 to i32
  %36 = or i32 %35, 64
  %37 = trunc i32 %36 to i8
  store i8 %37, ptr %33, align 1, !tbaa !11
  %38 = load ptr, ptr %4, align 8, !tbaa !5
  %39 = getelementptr inbounds [32 x i8], ptr %7, i64 0, i64 0
  %40 = load ptr, ptr %6, align 8, !tbaa !5
  call void @curve25519_scalarmult_donna(ptr noundef %38, ptr noundef %39, ptr noundef %40)
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 32, ptr %7) #3
  ret void
}

declare void @curve25519_scalarmult_donna(ptr noundef, ptr noundef, ptr noundef) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { "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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"long", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local void @curve25519_scalarmult(ptr noundef %0, ptr nocapture noundef readonly %1, ptr noundef %2) local_unnamed_addr #1 {
  %4 = alloca [32 x i8], align 16
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %4) #4
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 16 dereferenceable(32) %4, ptr noundef nonnull align 1 dereferenceable(32) %1, i64 32, i1 false), !tbaa !5
  %5 = load i8, ptr %4, align 16, !tbaa !5
  %6 = and i8 %5, -8
  store i8 %6, ptr %4, align 16, !tbaa !5
  %7 = getelementptr inbounds i8, ptr %4, i64 31
  %8 = load i8, ptr %7, align 1, !tbaa !5
  %9 = and i8 %8, 63
  %10 = or disjoint i8 %9, 64
  store i8 %10, ptr %7, align 1, !tbaa !5
  call void @curve25519_scalarmult_donna(ptr noundef %0, ptr noundef nonnull %4, ptr noundef %2) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #4
  ret void
}

declare void @curve25519_scalarmult_donna(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #3

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = { "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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #4 = { 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


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