; 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: nounwind uwtable
define dso_local ptr @strchrnul(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %5 = load ptr, ptr %3, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %5, i32 -1
  store ptr %6, ptr %3, align 8, !tbaa !5
  br label %7

7:                                                ; preds = %23, %2
  %8 = load ptr, ptr %3, align 8, !tbaa !5
  %9 = getelementptr inbounds i8, ptr %8, i32 1
  store ptr %9, ptr %3, align 8, !tbaa !5
  %10 = load i8, ptr %9, align 1, !tbaa !11
  %11 = sext i8 %10 to i32
  %12 = icmp ne i32 %11, 0
  br i1 %12, label %13, label %21

13:                                               ; preds = %7
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = load i8, ptr %14, align 1, !tbaa !11
  %16 = sext i8 %15 to i32
  %17 = load i32, ptr %4, align 4, !tbaa !9
  %18 = trunc i32 %17 to i8
  %19 = sext i8 %18 to i32
  %20 = icmp ne i32 %16, %19
  br label %21

21:                                               ; preds = %13, %7
  %22 = phi i1 [ false, %7 ], [ %20, %13 ]
  br i1 %22, label %23, label %24

23:                                               ; preds = %21
  br label %7, !llvm.loop !12

24:                                               ; preds = %21
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  ret ptr %25
}

attributes #0 = { 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" }

!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}
!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(read, inaccessiblemem: none) uwtable
define dso_local noundef nonnull ptr @strchrnul(ptr noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 -1
  %sext = shl i32 %1, 24
  %4 = ashr exact i32 %sext, 24
  br label %5

5:                                                ; preds = %5, %2
  %.0 = phi ptr [ %3, %2 ], [ %6, %5 ]
  %6 = getelementptr inbounds i8, ptr %.0, i64 1
  %7 = load i8, ptr %6, align 1, !tbaa !5
  %.not = icmp eq i8 %7, 0
  %8 = sext i8 %7 to i32
  %.not5 = icmp eq i32 %4, %8
  %or.cond = select i1 %.not, i1 true, i1 %.not5
  br i1 %or.cond, label %.critedge, label %5, !llvm.loop !8

.critedge:                                        ; preds = %5
  ret ptr %6
}

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: EarlyCSEPass,GVNPass,GlobalOptPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass