; LLVM IR from sympiler/nasoq :: nasoq_driver.ll (ZN7sym_lib16number_empty_colEPN6format3CSCE)

; 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.format::CSC" = type { i64, i64, i64, i32, i8, i8, ptr, ptr, ptr }

; 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: mustprogress nounwind uwtable
define dso_local noundef i32 @_ZN7sym_lib16number_empty_colEPN6format3CSCE(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  store i32 0, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %5

5:                                                ; preds = %35, %1
  %6 = load i32, ptr %4, align 4, !tbaa !9
  %7 = sext i32 %6 to i64
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = getelementptr inbounds %"struct.format::CSC", ptr %8, i32 0, i32 1
  %10 = load i64, ptr %9, align 8, !tbaa !11
  %11 = icmp ult i64 %7, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %5
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  br label %38

13:                                               ; preds = %5
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = getelementptr inbounds %"struct.format::CSC", ptr %14, i32 0, i32 6
  %16 = load ptr, ptr %15, align 8, !tbaa !15
  %17 = load i32, ptr %4, align 4, !tbaa !9
  %18 = add nsw i32 %17, 1
  %19 = sext i32 %18 to i64
  %20 = getelementptr inbounds i32, ptr %16, i64 %19
  %21 = load i32, ptr %20, align 4, !tbaa !9
  %22 = load ptr, ptr %2, align 8, !tbaa !5
  %23 = getelementptr inbounds %"struct.format::CSC", ptr %22, i32 0, i32 6
  %24 = load ptr, ptr %23, align 8, !tbaa !15
  %25 = load i32, ptr %4, align 4, !tbaa !9
  %26 = sext i32 %25 to i64
  %27 = getelementptr inbounds i32, ptr %24, i64 %26
  %28 = load i32, ptr %27, align 4, !tbaa !9
  %29 = sub nsw i32 %21, %28
  %30 = icmp eq i32 %29, 0
  br i1 %30, label %31, label %34

31:                                               ; preds = %13
  %32 = load i32, ptr %3, align 4, !tbaa !9
  %33 = add nsw i32 %32, 1
  store i32 %33, ptr %3, align 4, !tbaa !9
  br label %34

34:                                               ; preds = %31, %13
  br label %35

35:                                               ; preds = %34
  %36 = load i32, ptr %4, align 4, !tbaa !9
  %37 = add nsw i32 %36, 1
  store i32 %37, ptr %4, align 4, !tbaa !9
  br label %5, !llvm.loop !16

38:                                               ; preds = %12
  %39 = load i32, ptr %3, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret i32 %39
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !13, i64 8}
!12 = !{!"_ZTSN6format3CSCE", !13, i64 0, !13, i64 8, !13, i64 16, !10, i64 24, !14, i64 28, !14, i64 29, !6, i64 32, !6, i64 40, !6, i64 48}
!13 = !{!"long", !7, i64 0}
!14 = !{!"bool", !7, i64 0}
!15 = !{!12, !6, i64 32}
!16 = distinct !{!16, !17}
!17 = !{!"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 norecurse nosync nounwind willreturn memory(read, inaccessiblemem: none) uwtable
define dso_local noundef i32 @_ZN7sym_lib16number_empty_colEPN6format3CSCE(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = getelementptr inbounds i8, ptr %0, i64 8
  %3 = load i64, ptr %2, align 8, !tbaa !5
  %.not = icmp eq i64 %3, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1
  %4 = getelementptr inbounds i8, ptr %0, i64 32
  %5 = load ptr, ptr %4, align 8, !tbaa !13
  %.pre = load i32, ptr %5, align 4, !tbaa !14
  %min.iters.check = icmp ult i64 %3, 8
  br i1 %min.iters.check, label %scalar.ph.preheader, label %vector.ph

scalar.ph.preheader:                              ; preds = %middle.block, %.lr.ph
  %.ph = phi i32 [ %.pre, %.lr.ph ], [ %vector.recur.extract, %middle.block ]
  %indvars.iv.ph = phi i64 [ 0, %.lr.ph ], [ %n.vec, %middle.block ]
  %.0810.ph = phi i32 [ 0, %.lr.ph ], [ %18, %middle.block ]
  br label %scalar.ph

vector.ph:                                        ; preds = %.lr.ph
  %n.vec = and i64 %3, -8
  %vector.recur.init = insertelement <4 x i32> poison, i32 %.pre, i64 3
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %vector.recur = phi <4 x i32> [ %vector.recur.init, %vector.ph ], [ %wide.load14, %vector.body ]
  %vec.phi = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %15, %vector.body ]
  %vec.phi13 = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ %16, %vector.body ]
  %6 = or disjoint i64 %index, 1
  %7 = getelementptr inbounds i32, ptr %5, i64 %6
  %8 = getelementptr inbounds i8, ptr %7, i64 16
  %wide.load = load <4 x i32>, ptr %7, align 4, !tbaa !14
  %wide.load14 = load <4 x i32>, ptr %8, align 4, !tbaa !14
  %9 = shufflevector <4 x i32> %vector.recur, <4 x i32> %wide.load, <4 x i32> <i32 3, i32 4, i32 5, i32 6>
  %10 = shufflevector <4 x i32> %wide.load, <4 x i32> %wide.load14, <4 x i32> <i32 3, i32 4, i32 5, i32 6>
  %11 = icmp eq <4 x i32> %wide.load, %9
  %12 = icmp eq <4 x i32> %wide.load14, %10
  %13 = zext <4 x i1> %11 to <4 x i32>
  %14 = zext <4 x i1> %12 to <4 x i32>
  %15 = add <4 x i32> %vec.phi, %13
  %16 = add <4 x i32> %vec.phi13, %14
  %index.next = add nuw i64 %index, 8
  %17 = icmp eq i64 %index.next, %n.vec
  br i1 %17, label %middle.block, label %vector.body, !llvm.loop !15

middle.block:                                     ; preds = %vector.body
  %bin.rdx = add <4 x i32> %16, %15
  %18 = tail call i32 @llvm.vector.reduce.add.v4i32(<4 x i32> %bin.rdx)
  %vector.recur.extract = extractelement <4 x i32> %wide.load14, i64 3
  %cmp.n = icmp eq i64 %3, %n.vec
  br i1 %cmp.n, label %._crit_edge, label %scalar.ph.preheader

._crit_edge:                                      ; preds = %scalar.ph, %middle.block, %1
  %.08.lcssa = phi i32 [ 0, %1 ], [ %18, %middle.block ], [ %spec.select, %scalar.ph ]
  ret i32 %.08.lcssa

scalar.ph:                                        ; preds = %scalar.ph.preheader, %scalar.ph
  %19 = phi i32 [ %21, %scalar.ph ], [ %.ph, %scalar.ph.preheader ]
  %indvars.iv = phi i64 [ %indvars.iv.next, %scalar.ph ], [ %indvars.iv.ph, %scalar.ph.preheader ]
  %.0810 = phi i32 [ %spec.select, %scalar.ph ], [ %.0810.ph, %scalar.ph.preheader ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %20 = getelementptr inbounds i32, ptr %5, i64 %indvars.iv.next
  %21 = load i32, ptr %20, align 4, !tbaa !14
  %22 = icmp eq i32 %21, %19
  %23 = zext i1 %22 to i32
  %spec.select = add nuw nsw i32 %.0810, %23
  %exitcond.not = icmp eq i64 %indvars.iv.next, %3
  br i1 %exitcond.not, label %._crit_edge, label %scalar.ph, !llvm.loop !19
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.vector.reduce.add.v4i32(<4 x i32>) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn 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" }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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, !7, i64 8}
!6 = !{!"_ZTSN6format3CSCE", !7, i64 0, !7, i64 8, !7, i64 16, !10, i64 24, !11, i64 28, !11, i64 29, !12, i64 32, !12, i64 40, !12, i64 48}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"bool", !8, i64 0}
!12 = !{!"any pointer", !8, i64 0}
!13 = !{!6, !12, i64 32}
!14 = !{!10, !10, i64 0}
!15 = distinct !{!15, !16, !17, !18}
!16 = !{!"llvm.loop.mustprogress"}
!17 = !{!"llvm.loop.isvectorized", i32 1}
!18 = !{!"llvm.loop.unroll.runtime.disable"}
!19 = distinct !{!19, !16, !18, !17}


; Effective O3 passes: BDCEPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass