; 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 i64 @strcspn(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  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 8, ptr %5) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  store ptr %7, ptr %5, align 8, !tbaa !5
  br label %8

8:                                                ; preds = %32, %2
  %9 = load ptr, ptr %5, align 8, !tbaa !5
  %10 = load i8, ptr %9, align 1, !tbaa !9
  %11 = icmp ne i8 %10, 0
  br i1 %11, label %12, label %35

12:                                               ; preds = %8
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %13, ptr %6, align 8, !tbaa !5
  br label %14

14:                                               ; preds = %28, %12
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  %16 = load i8, ptr %15, align 1, !tbaa !9
  %17 = icmp ne i8 %16, 0
  br i1 %17, label %18, label %31

18:                                               ; preds = %14
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  %20 = load i8, ptr %19, align 1, !tbaa !9
  %21 = sext i8 %20 to i32
  %22 = load ptr, ptr %5, align 8, !tbaa !5
  %23 = load i8, ptr %22, align 1, !tbaa !9
  %24 = sext i8 %23 to i32
  %25 = icmp eq i32 %21, %24
  br i1 %25, label %26, label %27

26:                                               ; preds = %18
  br label %36

27:                                               ; preds = %18
  br label %28

28:                                               ; preds = %27
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  %30 = getelementptr inbounds i8, ptr %29, i32 1
  store ptr %30, ptr %6, align 8, !tbaa !5
  br label %14, !llvm.loop !10

31:                                               ; preds = %14
  br label %32

32:                                               ; preds = %31
  %33 = load ptr, ptr %5, align 8, !tbaa !5
  %34 = getelementptr inbounds i8, ptr %33, i32 1
  store ptr %34, ptr %5, align 8, !tbaa !5
  br label %8, !llvm.loop !12

35:                                               ; preds = %8
  br label %36

36:                                               ; preds = %35, %26
  %37 = load ptr, ptr %5, align 8, !tbaa !5
  %38 = load ptr, ptr %3, align 8, !tbaa !5
  %39 = ptrtoint ptr %37 to i64
  %40 = ptrtoint ptr %38 to i64
  %41 = sub i64 %39, %40
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #2
  ret i64 %41
}

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 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}
!12 = distinct !{!12, !11}


; 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(read, inaccessiblemem: none) uwtable
define dso_local noundef i64 @strcspn(ptr noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = load i8, ptr %0, align 1, !tbaa !5
  %.not18 = icmp eq i8 %3, 0
  br i1 %.not18, label %.loopexit, label %.preheader.lr.ph

.preheader.lr.ph:                                 ; preds = %2
  %4 = load i8, ptr %1, align 1, !tbaa !5
  %.not1216 = icmp eq i8 %4, 0
  br i1 %.not1216, label %.preheader.us, label %.preheader

.preheader.us:                                    ; preds = %.preheader.lr.ph, %.preheader.us
  %.01019.us = phi ptr [ %5, %.preheader.us ], [ %0, %.preheader.lr.ph ]
  %5 = getelementptr inbounds i8, ptr %.01019.us, i64 1
  %6 = load i8, ptr %5, align 1, !tbaa !5
  %.not.us = icmp eq i8 %6, 0
  br i1 %.not.us, label %.loopexit, label %.preheader.us, !llvm.loop !8

.preheader:                                       ; preds = %.preheader.lr.ph, %._crit_edge
  %7 = phi i8 [ %15, %._crit_edge ], [ %3, %.preheader.lr.ph ]
  %.01019 = phi ptr [ %14, %._crit_edge ], [ %0, %.preheader.lr.ph ]
  br label %11

8:                                                ; preds = %11
  %9 = getelementptr inbounds i8, ptr %.017, i64 1
  %10 = load i8, ptr %9, align 1, !tbaa !5
  %.not12 = icmp eq i8 %10, 0
  br i1 %.not12, label %._crit_edge, label %11, !llvm.loop !10

11:                                               ; preds = %.preheader, %8
  %12 = phi i8 [ %4, %.preheader ], [ %10, %8 ]
  %.017 = phi ptr [ %1, %.preheader ], [ %9, %8 ]
  %13 = icmp eq i8 %12, %7
  br i1 %13, label %.loopexit, label %8

._crit_edge:                                      ; preds = %8
  %14 = getelementptr inbounds i8, ptr %.01019, i64 1
  %15 = load i8, ptr %14, align 1, !tbaa !5
  %.not = icmp eq i8 %15, 0
  br i1 %.not, label %.loopexit, label %.preheader, !llvm.loop !8

.loopexit:                                        ; preds = %._crit_edge, %11, %.preheader.us, %2
  %.01015 = phi ptr [ %0, %2 ], [ %5, %.preheader.us ], [ %.01019, %11 ], [ %14, %._crit_edge ]
  %16 = ptrtoint ptr %.01015 to i64
  %17 = ptrtoint ptr %0 to i64
  %18 = sub i64 %16, %17
  ret i64 %18
}

attributes #0 = { nofree norecurse nosync nounwind memory(read, 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.mustprogress"}
!10 = distinct !{!10, !9}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopInstSimplifyPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass