; LLVM IR from petecoup/argon :: src/primitives (ops)

; 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: inlinehint nounwind uwtable
declare zeroext i8 @ar_max_u8(i8 noundef zeroext, i8 noundef zeroext) #1

; Function Attrs: nounwind uwtable
define dso_local void @ar_stride2_vmaxall_u8_generic(ptr noundef %0, i32 noundef %1, ptr noundef %2) #2 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !5
  %8 = load ptr, ptr %6, align 8, !tbaa !5
  %9 = getelementptr inbounds i8, ptr %8, i64 0
  store i8 0, ptr %9, align 1, !tbaa !11
  %10 = load ptr, ptr %6, align 8, !tbaa !5
  %11 = getelementptr inbounds i8, ptr %10, i64 1
  store i8 0, ptr %11, align 1, !tbaa !11
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !9
  br label %12

12:                                               ; preds = %41, %3
  %13 = load i32, ptr %7, align 4, !tbaa !9
  %14 = load i32, ptr %5, align 4, !tbaa !9
  %15 = icmp ult i32 %13, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %12
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  br label %44

17:                                               ; preds = %12
  %18 = load ptr, ptr %6, align 8, !tbaa !5
  %19 = getelementptr inbounds i8, ptr %18, i64 0
  %20 = load i8, ptr %19, align 1, !tbaa !11
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = load i32, ptr %7, align 4, !tbaa !9
  %23 = zext i32 %22 to i64
  %24 = getelementptr inbounds i8, ptr %21, i64 %23
  %25 = load i8, ptr %24, align 1, !tbaa !11
  %26 = call zeroext i8 @ar_max_u8(i8 noundef zeroext %20, i8 noundef zeroext %25)
  %27 = load ptr, ptr %6, align 8, !tbaa !5
  %28 = getelementptr inbounds i8, ptr %27, i64 0
  store i8 %26, ptr %28, align 1, !tbaa !11
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  %30 = getelementptr inbounds i8, ptr %29, i64 1
  %31 = load i8, ptr %30, align 1, !tbaa !11
  %32 = load ptr, ptr %4, align 8, !tbaa !5
  %33 = load i32, ptr %7, align 4, !tbaa !9
  %34 = add i32 %33, 1
  %35 = zext i32 %34 to i64
  %36 = getelementptr inbounds i8, ptr %32, i64 %35
  %37 = load i8, ptr %36, align 1, !tbaa !11
  %38 = call zeroext i8 @ar_max_u8(i8 noundef zeroext %31, i8 noundef zeroext %37)
  %39 = load ptr, ptr %6, align 8, !tbaa !5
  %40 = getelementptr inbounds i8, ptr %39, i64 1
  store i8 %38, ptr %40, align 1, !tbaa !11
  br label %41

41:                                               ; preds = %17
  %42 = load i32, ptr %7, align 4, !tbaa !9
  %43 = add i32 %42, 2
  store i32 %43, ptr %7, align 4, !tbaa !9
  br label %12, !llvm.loop !12

44:                                               ; preds = %16
  ret void
}

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

!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: inlinehint nounwind uwtable
declare zeroext i8 @ar_max_u8(i8 noundef zeroext, i8 noundef zeroext) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @ar_stride2_vmaxall_u8_generic(ptr nocapture noundef readonly %0, i32 noundef %1, ptr nocapture noundef %2) local_unnamed_addr #1 {
  store i8 0, ptr %2, align 1, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %2, i64 1
  store i8 0, ptr %4, align 1, !tbaa !5
  %.not = icmp eq i32 %1, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %3
  ret void

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.012 = phi i32 [ %16, %.lr.ph ], [ 0, %3 ]
  %5 = load i8, ptr %2, align 1, !tbaa !5
  %6 = zext i32 %.012 to i64
  %7 = getelementptr inbounds i8, ptr %0, i64 %6
  %8 = load i8, ptr %7, align 1, !tbaa !5
  %9 = tail call zeroext i8 @ar_max_u8(i8 noundef zeroext %5, i8 noundef zeroext %8)
  store i8 %9, ptr %2, align 1, !tbaa !5
  %10 = load i8, ptr %4, align 1, !tbaa !5
  %11 = or disjoint i32 %.012, 1
  %12 = zext i32 %11 to i64
  %13 = getelementptr inbounds i8, ptr %0, i64 %12
  %14 = load i8, ptr %13, align 1, !tbaa !5
  %15 = tail call zeroext i8 @ar_max_u8(i8 noundef zeroext %10, i8 noundef zeroext %14)
  store i8 %15, ptr %4, align 1, !tbaa !5
  %16 = add i32 %.012, 2
  %17 = icmp ult i32 %16, %1
  br i1 %17, label %.lr.ph, label %._crit_edge, !llvm.loop !8
}

attributes #0 = { inlinehint 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 #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" }

!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,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass