; LLVM IR from Try/Tempest :: Engine/thirdparty/libpng (pngwrite)

; 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 uwtable
define dso_local void @png_write_rows(ptr noalias noundef %0, ptr noundef %1, i32 noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !5
  store i32 %2, ptr %6, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #2
  %10 = load ptr, ptr %4, align 8, !tbaa !5
  %11 = icmp eq ptr %10, null
  br i1 %11, label %12, label %13

12:                                               ; preds = %3
  store i32 1, ptr %9, align 4
  br label %29

13:                                               ; preds = %3
  store i32 0, ptr %7, align 4, !tbaa !9
  %14 = load ptr, ptr %5, align 8, !tbaa !5
  store ptr %14, ptr %8, align 8, !tbaa !5
  br label %15

15:                                               ; preds = %23, %13
  %16 = load i32, ptr %7, align 4, !tbaa !9
  %17 = load i32, ptr %6, align 4, !tbaa !9
  %18 = icmp ult i32 %16, %17
  br i1 %18, label %19, label %28

19:                                               ; preds = %15
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = load ptr, ptr %8, align 8, !tbaa !5
  %22 = load ptr, ptr %21, align 8, !tbaa !5
  call void @png_write_row(ptr noundef %20, ptr noundef %22)
  br label %23

23:                                               ; preds = %19
  %24 = load i32, ptr %7, align 4, !tbaa !9
  %25 = add i32 %24, 1
  store i32 %25, ptr %7, align 4, !tbaa !9
  %26 = load ptr, ptr %8, align 8, !tbaa !5
  %27 = getelementptr inbounds ptr, ptr %26, i32 1
  store ptr %27, ptr %8, align 8, !tbaa !5
  br label %15, !llvm.loop !11

28:                                               ; preds = %15
  store i32 0, ptr %9, align 4
  br label %29

29:                                               ; preds = %28, %12
  call void @llvm.lifetime.end.p0(i64 8, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  %30 = load i32, ptr %9, align 4
  switch i32 %30, label %32 [
    i32 0, label %31
    i32 1, label %31
  ]

31:                                               ; preds = %29, %29
  ret void

32:                                               ; preds = %29
  unreachable
}

; Function Attrs: nounwind uwtable
declare dso_local void @png_write_row(ptr noalias noundef, ptr noundef) #1

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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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: nounwind uwtable
define dso_local void @png_write_rows(ptr noalias noundef %0, ptr nocapture noundef readonly %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = icmp ne ptr %0, null
  %5 = icmp ne i32 %2, 0
  %or.cond = and i1 %4, %5
  br i1 %or.cond, label %.lr.ph, label %.loopexit

.lr.ph:                                           ; preds = %3, %.lr.ph
  %.010 = phi ptr [ %8, %.lr.ph ], [ %1, %3 ]
  %.079 = phi i32 [ %7, %.lr.ph ], [ 0, %3 ]
  %6 = load ptr, ptr %.010, align 8, !tbaa !5
  tail call void @png_write_row(ptr noundef nonnull %0, ptr noundef %6)
  %7 = add nuw i32 %.079, 1
  %8 = getelementptr inbounds i8, ptr %.010, i64 8
  %exitcond.not = icmp eq i32 %7, %2
  br i1 %exitcond.not, label %.loopexit, label %.lr.ph, !llvm.loop !9

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

; Function Attrs: nounwind uwtable
declare dso_local void @png_write_row(ptr noalias noundef, ptr noundef) local_unnamed_addr #0

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 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass