; 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 willreturn memory(read) uwtable
declare dso_local i32 @tolower(i32 noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i32 @strncasecmp(ptr noundef %0, ptr noundef %1, i64 noundef %2) #2 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i64, align 8
  %7 = alloca i32, align 4
  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 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !11
  br label %8

8:                                                ; preds = %38, %3
  %9 = load i64, ptr %6, align 8, !tbaa !9
  %10 = icmp ne i64 %9, 0
  br i1 %10, label %11, label %36

11:                                               ; preds = %8
  %12 = load ptr, ptr %4, align 8, !tbaa !5
  %13 = load ptr, ptr %5, align 8, !tbaa !5
  %14 = icmp eq ptr %12, %13
  br i1 %14, label %26, label %15

15:                                               ; preds = %11
  %16 = load ptr, ptr %4, align 8, !tbaa !5
  %17 = load i8, ptr %16, align 1, !tbaa !13
  %18 = zext i8 %17 to i32
  %19 = call i32 @tolower(i32 noundef %18) #4
  %20 = load ptr, ptr %5, align 8, !tbaa !5
  %21 = load i8, ptr %20, align 1, !tbaa !13
  %22 = zext i8 %21 to i32
  %23 = call i32 @tolower(i32 noundef %22) #4
  %24 = sub nsw i32 %19, %23
  store i32 %24, ptr %7, align 4, !tbaa !11
  %25 = icmp ne i32 %24, 0
  br i1 %25, label %36, label %26

26:                                               ; preds = %15, %11
  %27 = load i64, ptr %6, align 8, !tbaa !9
  %28 = add i64 %27, -1
  store i64 %28, ptr %6, align 8, !tbaa !9
  %29 = load ptr, ptr %5, align 8, !tbaa !5
  %30 = getelementptr inbounds i8, ptr %29, i32 1
  store ptr %30, ptr %5, align 8, !tbaa !5
  %31 = load ptr, ptr %4, align 8, !tbaa !5
  %32 = getelementptr inbounds i8, ptr %31, i32 1
  store ptr %32, ptr %4, align 8, !tbaa !5
  %33 = load i8, ptr %31, align 1, !tbaa !13
  %34 = sext i8 %33 to i32
  %35 = icmp ne i32 %34, 0
  br label %36

36:                                               ; preds = %26, %15, %8
  %37 = phi i1 [ false, %15 ], [ false, %8 ], [ %35, %26 ]
  br i1 %37, label %38, label %39

38:                                               ; preds = %36
  br label %8, !llvm.loop !14

39:                                               ; preds = %36
  %40 = load i32, ptr %7, align 4, !tbaa !11
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  ret i32 %40
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind willreturn memory(read) 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 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 }
attributes #4 = { nounwind willreturn memory(read) }

!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 = !{!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: mustprogress nofree nounwind willreturn memory(read) uwtable
declare dso_local i32 @tolower(i32 noundef) local_unnamed_addr #0

; Function Attrs: nofree nounwind memory(read) uwtable
define dso_local i32 @strncasecmp(ptr noundef readonly %0, ptr noundef readonly %1, i64 noundef %2) local_unnamed_addr #1 {
  %.old1.not = icmp eq i64 %2, 0
  br i1 %.old1.not, label %.critedge, label %.preheader

.preheader:                                       ; preds = %3, %12
  %.012 = phi ptr [ %15, %12 ], [ %0, %3 ]
  %.011 = phi ptr [ %14, %12 ], [ %1, %3 ]
  %.010 = phi i64 [ %13, %12 ], [ %2, %3 ]
  %4 = icmp eq ptr %.012, %.011
  %.pre = load i8, ptr %.012, align 1, !tbaa !5
  br i1 %4, label %12, label %5

5:                                                ; preds = %.preheader
  %6 = zext i8 %.pre to i32
  %7 = tail call i32 @tolower(i32 noundef %6) #2
  %8 = load i8, ptr %.011, align 1, !tbaa !5
  %9 = zext i8 %8 to i32
  %10 = tail call i32 @tolower(i32 noundef %9) #2
  %11 = sub nsw i32 %7, %10
  %.not = icmp eq i32 %11, 0
  br i1 %.not, label %12, label %.critedge

12:                                               ; preds = %5, %.preheader
  %13 = add i64 %.010, -1
  %14 = getelementptr inbounds i8, ptr %.011, i64 1
  %15 = getelementptr inbounds i8, ptr %.012, i64 1
  %16 = icmp ne i8 %.pre, 0
  %17 = icmp ne i64 %13, 0
  %or.cond = select i1 %16, i1 %17, i1 false
  br i1 %or.cond, label %.preheader, label %.critedge, !llvm.loop !8

.critedge:                                        ; preds = %5, %12, %3
  %.2 = phi i32 [ 0, %3 ], [ %11, %5 ], [ 0, %12 ]
  ret i32 %.2
}

attributes #0 = { mustprogress nofree nounwind willreturn memory(read) 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 #1 = { nofree nounwind memory(read) 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 willreturn memory(read) }

!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: GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass