; LLVM IR from tezc/sc :: map (sc_map)

; 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"

%struct.sc_map_32 = type { ptr, i32, i32, i32, i32, i8, i8, i8 }
%struct.sc_map_item_32 = type { i32, i32 }

; 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 void @sc_map_clear_32(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = getelementptr inbounds %struct.sc_map_32, ptr %4, i32 0, i32 2
  %6 = load i32, ptr %5, align 4, !tbaa !9
  %7 = icmp ugt i32 %6, 0
  br i1 %7, label %8, label %32

8:                                                ; preds = %1
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  store i32 0, ptr %3, align 4, !tbaa !13
  br label %9

9:                                                ; preds = %24, %8
  %10 = load i32, ptr %3, align 4, !tbaa !13
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.sc_map_32, ptr %11, i32 0, i32 1
  %13 = load i32, ptr %12, align 8, !tbaa !14
  %14 = icmp ult i32 %10, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  br label %27

16:                                               ; preds = %9
  %17 = load ptr, ptr %2, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.sc_map_32, ptr %17, i32 0, i32 0
  %19 = load ptr, ptr %18, align 8, !tbaa !15
  %20 = load i32, ptr %3, align 4, !tbaa !13
  %21 = zext i32 %20 to i64
  %22 = getelementptr inbounds %struct.sc_map_item_32, ptr %19, i64 %21
  %23 = getelementptr inbounds %struct.sc_map_item_32, ptr %22, i32 0, i32 0
  store i32 0, ptr %23, align 4, !tbaa !16
  br label %24

24:                                               ; preds = %16
  %25 = load i32, ptr %3, align 4, !tbaa !13
  %26 = add i32 %25, 1
  store i32 %26, ptr %3, align 4, !tbaa !13
  br label %9, !llvm.loop !18

27:                                               ; preds = %15
  %28 = load ptr, ptr %2, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.sc_map_32, ptr %28, i32 0, i32 5
  store i8 0, ptr %29, align 8, !tbaa !20
  %30 = load ptr, ptr %2, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.sc_map_32, ptr %30, i32 0, i32 2
  store i32 0, ptr %31, align 4, !tbaa !9
  br label %32

32:                                               ; preds = %27, %1
  ret void
}

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, !11, i64 12}
!10 = !{!"sc_map_32", !6, i64 0, !11, i64 8, !11, i64 12, !11, i64 16, !11, i64 20, !12, i64 24, !12, i64 25, !12, i64 26}
!11 = !{!"int", !7, i64 0}
!12 = !{!"_Bool", !7, i64 0}
!13 = !{!11, !11, i64 0}
!14 = !{!10, !11, i64 8}
!15 = !{!10, !6, i64 0}
!16 = !{!17, !11, i64 0}
!17 = !{!"sc_map_item_32", !11, i64 0, !11, i64 4}
!18 = distinct !{!18, !19}
!19 = !{!"llvm.loop.mustprogress"}
!20 = !{!10, !12, i64 24}


; 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"

%struct.sc_map_item_32 = type { i32, i32 }

; Function Attrs: nofree norecurse nosync nounwind memory(write, argmem: readwrite, inaccessiblemem: none) uwtable
define dso_local void @sc_map_clear_32(ptr nocapture noundef %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 12
  %3 = load i32, ptr %2, align 4, !tbaa !5
  %.not = icmp eq i32 %3, 0
  br i1 %.not, label %19, label %.preheader

.preheader:                                       ; preds = %1
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load i32, ptr %4, align 8, !tbaa !12
  %.not8 = icmp eq i32 %5, 0
  br i1 %.not8, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader
  %6 = load ptr, ptr %0, align 8, !tbaa !13
  %wide.trip.count = zext i32 %5 to i64
  %xtraiter = and i64 %wide.trip.count, 7
  %7 = icmp ult i32 %5, 8
  br i1 %7, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph.new

.lr.ph.new:                                       ; preds = %.lr.ph
  %unroll_iter = and i64 %wide.trip.count, 4294967288
  br label %10

._crit_edge.loopexit.unr-lcssa:                   ; preds = %10, %.lr.ph
  %indvars.iv.unr = phi i64 [ 0, %.lr.ph ], [ %indvars.iv.next.7, %10 ]
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.epil.preheader

.epil.preheader:                                  ; preds = %._crit_edge.loopexit.unr-lcssa, %.epil.preheader
  %indvars.iv.epil = phi i64 [ %indvars.iv.next.epil, %.epil.preheader ], [ %indvars.iv.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i64 [ %epil.iter.next, %.epil.preheader ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %8 = getelementptr inbounds %struct.sc_map_item_32, ptr %6, i64 %indvars.iv.epil
  store i32 0, ptr %8, align 4, !tbaa !14
  %indvars.iv.next.epil = add nuw nsw i64 %indvars.iv.epil, 1
  %epil.iter.next = add i64 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i64 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %._crit_edge, label %.epil.preheader, !llvm.loop !16

._crit_edge:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.epil.preheader, %.preheader
  %9 = getelementptr inbounds i8, ptr %0, i64 24
  store i8 0, ptr %9, align 8, !tbaa !18
  store i32 0, ptr %2, align 4, !tbaa !5
  br label %19

10:                                               ; preds = %10, %.lr.ph.new
  %indvars.iv = phi i64 [ 0, %.lr.ph.new ], [ %indvars.iv.next.7, %10 ]
  %niter = phi i64 [ 0, %.lr.ph.new ], [ %niter.next.7, %10 ]
  %11 = getelementptr inbounds %struct.sc_map_item_32, ptr %6, i64 %indvars.iv
  store i32 0, ptr %11, align 4, !tbaa !14
  %indvars.iv.next = or disjoint i64 %indvars.iv, 1
  %12 = getelementptr inbounds %struct.sc_map_item_32, ptr %6, i64 %indvars.iv.next
  store i32 0, ptr %12, align 4, !tbaa !14
  %indvars.iv.next.1 = or disjoint i64 %indvars.iv, 2
  %13 = getelementptr inbounds %struct.sc_map_item_32, ptr %6, i64 %indvars.iv.next.1
  store i32 0, ptr %13, align 4, !tbaa !14
  %indvars.iv.next.2 = or disjoint i64 %indvars.iv, 3
  %14 = getelementptr inbounds %struct.sc_map_item_32, ptr %6, i64 %indvars.iv.next.2
  store i32 0, ptr %14, align 4, !tbaa !14
  %indvars.iv.next.3 = or disjoint i64 %indvars.iv, 4
  %15 = getelementptr inbounds %struct.sc_map_item_32, ptr %6, i64 %indvars.iv.next.3
  store i32 0, ptr %15, align 4, !tbaa !14
  %indvars.iv.next.4 = or disjoint i64 %indvars.iv, 5
  %16 = getelementptr inbounds %struct.sc_map_item_32, ptr %6, i64 %indvars.iv.next.4
  store i32 0, ptr %16, align 4, !tbaa !14
  %indvars.iv.next.5 = or disjoint i64 %indvars.iv, 6
  %17 = getelementptr inbounds %struct.sc_map_item_32, ptr %6, i64 %indvars.iv.next.5
  store i32 0, ptr %17, align 4, !tbaa !14
  %indvars.iv.next.6 = or disjoint i64 %indvars.iv, 7
  %18 = getelementptr inbounds %struct.sc_map_item_32, ptr %6, i64 %indvars.iv.next.6
  store i32 0, ptr %18, align 4, !tbaa !14
  %indvars.iv.next.7 = add nuw nsw i64 %indvars.iv, 8
  %niter.next.7 = add i64 %niter, 8
  %niter.ncmp.7 = icmp eq i64 %niter.next.7, %unroll_iter
  br i1 %niter.ncmp.7, label %._crit_edge.loopexit.unr-lcssa, label %10, !llvm.loop !19

19:                                               ; preds = %._crit_edge, %1
  ret void
}

attributes #0 = { nofree norecurse nosync nounwind memory(write, argmem: readwrite, 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, !10, i64 12}
!6 = !{!"sc_map_32", !7, i64 0, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !11, i64 24, !11, i64 25, !11, i64 26}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"_Bool", !8, i64 0}
!12 = !{!6, !10, i64 8}
!13 = !{!6, !7, i64 0}
!14 = !{!15, !10, i64 0}
!15 = !{!"sc_map_item_32", !10, i64 0, !10, i64 4}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.unroll.disable"}
!18 = !{!6, !11, i64 24}
!19 = distinct !{!19, !20}
!20 = !{!"llvm.loop.mustprogress"}


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