; LLVM IR from JonathanSalwan/Triton :: src/stubs (triton-stubs)

; 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 ptr @strncpy(ptr noundef %0, ptr noundef %1, i64 noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca ptr, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i64 %2, ptr %6, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  %8 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %8, ptr %7, align 8, !tbaa !5
  br label %9

9:                                                ; preds = %21, %3
  %10 = load i64, ptr %6, align 8, !tbaa !9
  %11 = icmp ne i64 %10, 0
  br i1 %11, label %12, label %26

12:                                               ; preds = %9
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = load i8, ptr %13, align 1, !tbaa !11
  %15 = load ptr, ptr %7, align 8, !tbaa !5
  store i8 %14, ptr %15, align 1, !tbaa !11
  %16 = sext i8 %14 to i32
  %17 = icmp ne i32 %16, 0
  br i1 %17, label %18, label %21

18:                                               ; preds = %12
  %19 = load ptr, ptr %5, align 8, !tbaa !5
  %20 = getelementptr inbounds i8, ptr %19, i32 1
  store ptr %20, ptr %5, align 8, !tbaa !5
  br label %21

21:                                               ; preds = %18, %12
  %22 = load ptr, ptr %7, align 8, !tbaa !5
  %23 = getelementptr inbounds i8, ptr %22, i32 1
  store ptr %23, ptr %7, align 8, !tbaa !5
  %24 = load i64, ptr %6, align 8, !tbaa !9
  %25 = add i64 %24, -1
  store i64 %25, ptr %6, align 8, !tbaa !9
  br label %9, !llvm.loop !12

26:                                               ; preds = %9
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  ret ptr %27
}

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 = { 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: nofree norecurse nosync nounwind memory(readwrite, inaccessiblemem: none) uwtable
define dso_local noundef ptr @strncpy(ptr noundef returned writeonly %0, ptr nocapture noundef readonly %1, i64 noundef %2) local_unnamed_addr #0 {
  %.not10 = icmp eq i64 %2, 0
  br i1 %.not10, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %3
  %xtraiter = and i64 %2, 3
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol

.lr.ph.prol:                                      ; preds = %.lr.ph.preheader, %.lr.ph.prol
  %.013.prol = phi ptr [ %5, %.lr.ph.prol ], [ %0, %.lr.ph.preheader ]
  %.0712.prol = phi i64 [ %6, %.lr.ph.prol ], [ %2, %.lr.ph.preheader ]
  %.0811.prol = phi ptr [ %spec.select.prol, %.lr.ph.prol ], [ %1, %.lr.ph.preheader ]
  %prol.iter = phi i64 [ %prol.iter.next, %.lr.ph.prol ], [ 0, %.lr.ph.preheader ]
  %4 = load i8, ptr %.0811.prol, align 1, !tbaa !5
  store i8 %4, ptr %.013.prol, align 1, !tbaa !5
  %.not9.prol = icmp ne i8 %4, 0
  %spec.select.idx.prol = zext i1 %.not9.prol to i64
  %spec.select.prol = getelementptr inbounds i8, ptr %.0811.prol, i64 %spec.select.idx.prol
  %5 = getelementptr inbounds i8, ptr %.013.prol, i64 1
  %6 = add i64 %.0712.prol, -1
  %prol.iter.next = add i64 %prol.iter, 1
  %prol.iter.cmp.not = icmp eq i64 %prol.iter.next, %xtraiter
  br i1 %prol.iter.cmp.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol, !llvm.loop !8

.lr.ph.prol.loopexit:                             ; preds = %.lr.ph.prol, %.lr.ph.preheader
  %.013.unr = phi ptr [ %0, %.lr.ph.preheader ], [ %5, %.lr.ph.prol ]
  %.0712.unr = phi i64 [ %2, %.lr.ph.preheader ], [ %6, %.lr.ph.prol ]
  %.0811.unr = phi ptr [ %1, %.lr.ph.preheader ], [ %spec.select.prol, %.lr.ph.prol ]
  %7 = icmp ult i64 %2, 4
  br i1 %7, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.prol.loopexit, %.lr.ph
  %.013 = phi ptr [ %15, %.lr.ph ], [ %.013.unr, %.lr.ph.prol.loopexit ]
  %.0712 = phi i64 [ %16, %.lr.ph ], [ %.0712.unr, %.lr.ph.prol.loopexit ]
  %.0811 = phi ptr [ %spec.select.3, %.lr.ph ], [ %.0811.unr, %.lr.ph.prol.loopexit ]
  %8 = load i8, ptr %.0811, align 1, !tbaa !5
  store i8 %8, ptr %.013, align 1, !tbaa !5
  %.not9 = icmp ne i8 %8, 0
  %spec.select.idx = zext i1 %.not9 to i64
  %spec.select = getelementptr inbounds i8, ptr %.0811, i64 %spec.select.idx
  %9 = getelementptr inbounds i8, ptr %.013, i64 1
  %10 = load i8, ptr %spec.select, align 1, !tbaa !5
  store i8 %10, ptr %9, align 1, !tbaa !5
  %.not9.1 = icmp ne i8 %10, 0
  %spec.select.idx.1 = zext i1 %.not9.1 to i64
  %spec.select.1 = getelementptr inbounds i8, ptr %spec.select, i64 %spec.select.idx.1
  %11 = getelementptr inbounds i8, ptr %.013, i64 2
  %12 = load i8, ptr %spec.select.1, align 1, !tbaa !5
  store i8 %12, ptr %11, align 1, !tbaa !5
  %.not9.2 = icmp ne i8 %12, 0
  %spec.select.idx.2 = zext i1 %.not9.2 to i64
  %spec.select.2 = getelementptr inbounds i8, ptr %spec.select.1, i64 %spec.select.idx.2
  %13 = getelementptr inbounds i8, ptr %.013, i64 3
  %14 = load i8, ptr %spec.select.2, align 1, !tbaa !5
  store i8 %14, ptr %13, align 1, !tbaa !5
  %.not9.3 = icmp ne i8 %14, 0
  %spec.select.idx.3 = zext i1 %.not9.3 to i64
  %spec.select.3 = getelementptr inbounds i8, ptr %spec.select.2, i64 %spec.select.idx.3
  %15 = getelementptr inbounds i8, ptr %.013, i64 4
  %16 = add i64 %.0712, -4
  %.not.3 = icmp eq i64 %16, 0
  br i1 %.not.3, label %._crit_edge, label %.lr.ph, !llvm.loop !10

._crit_edge:                                      ; preds = %.lr.ph.prol.loopexit, %.lr.ph, %3
  ret ptr %0
}

attributes #0 = { nofree norecurse nosync nounwind memory(readwrite, inaccessiblemem: 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, !6, i64 0}
!6 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.unroll.disable"}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


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