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

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

declare void @memzero(ptr noundef, i64 noundef) #2

declare void @hasher_Raw(i32 noundef, ptr noundef, i64 noundef, ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local void @ecdsa_get_pubkeyhash(ptr noundef %0, i32 noundef %1, ptr noundef %2) #3 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca [32 x i8], align 16
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 32, ptr %7) #4
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  %9 = getelementptr inbounds i8, ptr %8, i64 0
  %10 = load i8, ptr %9, align 1, !tbaa !11
  %11 = zext i8 %10 to i32
  %12 = icmp eq i32 %11, 4
  br i1 %12, label %13, label %17

13:                                               ; preds = %3
  %14 = load i32, ptr %5, align 4, !tbaa !9
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds [32 x i8], ptr %7, i64 0, i64 0
  call void @hasher_Raw(i32 noundef %14, ptr noundef %15, i64 noundef 65, ptr noundef %16)
  br label %32

17:                                               ; preds = %3
  %18 = load ptr, ptr %4, align 8, !tbaa !5
  %19 = getelementptr inbounds i8, ptr %18, i64 0
  %20 = load i8, ptr %19, align 1, !tbaa !11
  %21 = zext i8 %20 to i32
  %22 = icmp eq i32 %21, 0
  br i1 %22, label %23, label %27

23:                                               ; preds = %17
  %24 = load i32, ptr %5, align 4, !tbaa !9
  %25 = load ptr, ptr %4, align 8, !tbaa !5
  %26 = getelementptr inbounds [32 x i8], ptr %7, i64 0, i64 0
  call void @hasher_Raw(i32 noundef %24, ptr noundef %25, i64 noundef 1, ptr noundef %26)
  br label %31

27:                                               ; preds = %17
  %28 = load i32, ptr %5, align 4, !tbaa !9
  %29 = load ptr, ptr %4, align 8, !tbaa !5
  %30 = getelementptr inbounds [32 x i8], ptr %7, i64 0, i64 0
  call void @hasher_Raw(i32 noundef %28, ptr noundef %29, i64 noundef 33, ptr noundef %30)
  br label %31

31:                                               ; preds = %27, %23
  br label %32

32:                                               ; preds = %31, %13
  %33 = load ptr, ptr %6, align 8, !tbaa !5
  %34 = getelementptr inbounds [32 x i8], ptr %7, i64 0, i64 0
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %33, ptr align 16 %34, i64 20, i1 false)
  %35 = getelementptr inbounds [32 x i8], ptr %7, i64 0, i64 0
  call void @memzero(ptr noundef %35, i64 noundef 32)
  call void @llvm.lifetime.end.p0(i64 32, ptr %7) #4
  ret void
}

attributes #0 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
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 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 #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 = !{!"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 = !{!7, !7, i64 0}


; 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 nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0

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

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

declare void @memzero(ptr noundef, i64 noundef) local_unnamed_addr #2

declare void @hasher_Raw(i32 noundef, ptr noundef, i64 noundef, ptr noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
define dso_local void @ecdsa_get_pubkeyhash(ptr noundef %0, i32 noundef %1, ptr nocapture noundef writeonly %2) local_unnamed_addr #3 {
  %4 = alloca [32 x i8], align 16
  call void @llvm.lifetime.start.p0(i64 32, ptr nonnull %4) #4
  %5 = load i8, ptr %0, align 1, !tbaa !5
  %switch.selectcmp = icmp eq i8 %5, 0
  %switch.select = select i1 %switch.selectcmp, i64 1, i64 33
  %switch.selectcmp8 = icmp eq i8 %5, 4
  %switch.select9 = select i1 %switch.selectcmp8, i64 65, i64 %switch.select
  call void @hasher_Raw(i32 noundef %1, ptr noundef nonnull %0, i64 noundef %switch.select9, ptr noundef nonnull %4) #4
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 1 dereferenceable(20) %2, ptr noundef nonnull align 16 dereferenceable(20) %4, i64 20, i1 false)
  call void @memzero(ptr noundef nonnull %4, i64 noundef 32) #4
  call void @llvm.lifetime.end.p0(i64 32, ptr nonnull %4) #4
  ret void
}

attributes #0 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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 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 #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,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass