; 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 @memchr(ptr noundef %0, i32 noundef %1, i64 noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i64, align 8
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !9
  store i64 %2, ptr %7, align 8, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %10, ptr %8, align 8, !tbaa !5
  br label %11

11:                                               ; preds = %24, %3
  %12 = load i64, ptr %7, align 8, !tbaa !11
  %13 = icmp ne i64 %12, 0
  br i1 %13, label %14, label %29

14:                                               ; preds = %11
  %15 = load ptr, ptr %8, align 8, !tbaa !5
  %16 = load i8, ptr %15, align 1, !tbaa !13
  %17 = zext i8 %16 to i32
  %18 = load i32, ptr %6, align 4, !tbaa !9
  %19 = trunc i32 %18 to i8
  %20 = zext i8 %19 to i32
  %21 = icmp eq i32 %17, %20
  br i1 %21, label %22, label %24

22:                                               ; preds = %14
  %23 = load ptr, ptr %8, align 8, !tbaa !5
  store ptr %23, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %30

24:                                               ; preds = %14
  %25 = load ptr, ptr %8, align 8, !tbaa !5
  %26 = getelementptr inbounds i8, ptr %25, i32 1
  store ptr %26, ptr %8, align 8, !tbaa !5
  %27 = load i64, ptr %7, align 8, !tbaa !11
  %28 = add i64 %27, -1
  store i64 %28, ptr %7, align 8, !tbaa !11
  br label %11, !llvm.loop !14

29:                                               ; preds = %11
  store ptr null, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %30

30:                                               ; preds = %29, %22
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  %31 = load ptr, ptr %4, align 8
  ret ptr %31
}

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 = !{!"int", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"long", !7, i64 0}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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(read, inaccessiblemem: none) uwtable
define dso_local noundef ptr @memchr(ptr noundef readonly %0, i32 noundef %1, i64 noundef %2) local_unnamed_addr #0 {
  %.not9 = icmp eq i64 %2, 0
  br i1 %.not9, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %3
  %4 = trunc i32 %1 to i8
  br label %5

5:                                                ; preds = %.lr.ph, %8
  %.011 = phi ptr [ %0, %.lr.ph ], [ %9, %8 ]
  %.0710 = phi i64 [ %2, %.lr.ph ], [ %10, %8 ]
  %6 = load i8, ptr %.011, align 1, !tbaa !5
  %7 = icmp eq i8 %6, %4
  br i1 %7, label %._crit_edge, label %8

8:                                                ; preds = %5
  %9 = getelementptr inbounds i8, ptr %.011, i64 1
  %10 = add i64 %.0710, -1
  %.not = icmp eq i64 %10, 0
  br i1 %.not, label %._crit_edge, label %5, !llvm.loop !8

._crit_edge:                                      ; preds = %5, %8, %3
  %.08 = phi ptr [ null, %3 ], [ null, %8 ], [ %.011, %5 ]
  ret ptr %.08
}

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"}


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