; LLVM IR from openssl/openssl :: crypto/ec/curve448 (f_generic)

; 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.gf_s = type { [8 x i64] }

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

; Function Attrs: nounwind uwtable
declare dso_local void @gf_strong_reduce(ptr noundef) #1

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

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @constant_time_is_zero_64(i64 noundef) #2

; Function Attrs: nounwind uwtable
declare dso_local void @gf_sub(ptr noundef, ptr noundef, ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i64 @gf_eq(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca [1 x %struct.gf_s], align 16
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 64, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 0, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  %8 = getelementptr inbounds [1 x %struct.gf_s], ptr %5, i64 0, i64 0
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  call void @gf_sub(ptr noundef %8, ptr noundef %9, ptr noundef %10)
  %11 = getelementptr inbounds [1 x %struct.gf_s], ptr %5, i64 0, i64 0
  call void @gf_strong_reduce(ptr noundef %11)
  store i32 0, ptr %7, align 4, !tbaa !11
  br label %12

12:                                               ; preds = %25, %2
  %13 = load i32, ptr %7, align 4, !tbaa !11
  %14 = zext i32 %13 to i64
  %15 = icmp ult i64 %14, 8
  br i1 %15, label %16, label %28

16:                                               ; preds = %12
  %17 = getelementptr inbounds [1 x %struct.gf_s], ptr %5, i64 0, i64 0
  %18 = getelementptr inbounds %struct.gf_s, ptr %17, i32 0, i32 0
  %19 = load i32, ptr %7, align 4, !tbaa !11
  %20 = zext i32 %19 to i64
  %21 = getelementptr inbounds [8 x i64], ptr %18, i64 0, i64 %20
  %22 = load i64, ptr %21, align 8, !tbaa !9
  %23 = load i64, ptr %6, align 8, !tbaa !9
  %24 = or i64 %23, %22
  store i64 %24, ptr %6, align 8, !tbaa !9
  br label %25

25:                                               ; preds = %16
  %26 = load i32, ptr %7, align 4, !tbaa !11
  %27 = add i32 %26, 1
  store i32 %27, ptr %7, align 4, !tbaa !11
  br label %12, !llvm.loop !13

28:                                               ; preds = %12
  %29 = load i64, ptr %6, align 8, !tbaa !9
  %30 = call i64 @constant_time_is_zero_64(i64 noundef %29)
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 64, ptr %5) #3
  ret i64 %30
}

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 = { inlinehint 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 #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 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"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.gf_s = type { [8 x i64] }

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

; Function Attrs: nounwind uwtable
declare dso_local void @gf_strong_reduce(ptr noundef) local_unnamed_addr #1

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

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @constant_time_is_zero_64(i64 noundef) local_unnamed_addr #2

; Function Attrs: nounwind uwtable
declare dso_local void @gf_sub(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local i64 @gf_eq(ptr noundef %0, ptr noundef %1) local_unnamed_addr #1 {
  %3 = alloca [1 x %struct.gf_s], align 16
  call void @llvm.lifetime.start.p0(i64 64, ptr nonnull %3) #4
  call void @gf_sub(ptr noundef nonnull %3, ptr noundef %0, ptr noundef %1)
  call void @gf_strong_reduce(ptr noundef nonnull %3)
  %4 = load <8 x i64>, ptr %3, align 16, !tbaa !5
  %5 = call i64 @llvm.vector.reduce.or.v8i64(<8 x i64> %4)
  %6 = call i64 @constant_time_is_zero_64(i64 noundef %5)
  call void @llvm.lifetime.end.p0(i64 64, ptr nonnull %3) #4
  ret i64 %6
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.vector.reduce.or.v8i64(<8 x i64>) #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 = { inlinehint 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 #3 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,LCSSAPass,LoopRotatePass,ReassociatePass,SLPVectorizerPass,SROAPass,SimplifyCFGPass