; LLVM IR from aagdev/mlimgsynth :: src/ccommon (image_io_png)

; 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.CodecPng = type { ptr, i32 }
%struct.CodecPngText = type { ptr, ptr }

@g_allocator_dopt = external global ptr, align 8

; 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 @imgio_png_save_free(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  store i32 0, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.CodecPng, ptr %7, i32 0, i32 0
  %9 = load ptr, ptr %8, align 8, !tbaa !11
  %10 = call i32 @dynbuf_count(ptr noundef %9)
  store i32 %10, ptr %6, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %33, %2
  %12 = load i32, ptr %5, align 4, !tbaa !9
  %13 = load i32, ptr %6, align 4, !tbaa !9
  %14 = icmp ult i32 %12, %13
  br i1 %14, label %16, label %15

15:                                               ; preds = %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  br label %36

16:                                               ; preds = %11
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.CodecPng, ptr %17, i32 0, i32 0
  %19 = load ptr, ptr %18, align 8, !tbaa !11
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = zext i32 %20 to i64
  %22 = getelementptr inbounds %struct.CodecPngText, ptr %19, i64 %21
  %23 = getelementptr inbounds %struct.CodecPngText, ptr %22, i32 0, i32 1
  %24 = load ptr, ptr @g_allocator_dopt, align 8, !tbaa !5
  call void @dynbuf_free(ptr noundef %23, ptr noundef %24)
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.CodecPng, ptr %25, i32 0, i32 0
  %27 = load ptr, ptr %26, align 8, !tbaa !11
  %28 = load i32, ptr %5, align 4, !tbaa !9
  %29 = zext i32 %28 to i64
  %30 = getelementptr inbounds %struct.CodecPngText, ptr %27, i64 %29
  %31 = getelementptr inbounds %struct.CodecPngText, ptr %30, i32 0, i32 0
  %32 = load ptr, ptr @g_allocator_dopt, align 8, !tbaa !5
  call void @dynbuf_free(ptr noundef %31, ptr noundef %32)
  br label %33

33:                                               ; preds = %16
  %34 = load i32, ptr %5, align 4, !tbaa !9
  %35 = add i32 %34, 1
  store i32 %35, ptr %5, align 4, !tbaa !9
  br label %11, !llvm.loop !13

36:                                               ; preds = %15
  %37 = load ptr, ptr %3, align 8, !tbaa !5
  %38 = getelementptr inbounds %struct.CodecPng, ptr %37, i32 0, i32 0
  %39 = load ptr, ptr @g_allocator_dopt, align 8, !tbaa !5
  call void @dynbuf_free(ptr noundef %38, ptr noundef %39)
  ret void
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @dynbuf_count(ptr noundef) #2

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @dynbuf_free(ptr noundef, ptr noundef) #2

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 = { 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 #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 = !{!12, !6, i64 0}
!12 = !{!"CodecPng", !6, i64 0, !10, i64 8}
!13 = distinct !{!13, !14}
!14 = !{!"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"

%struct.CodecPngText = type { ptr, ptr }

@g_allocator_dopt = external local_unnamed_addr global ptr, align 8

; Function Attrs: nounwind uwtable
define dso_local void @imgio_png_save_free(ptr noundef %0, ptr nocapture noundef readnone %1) local_unnamed_addr #0 {
  %3 = load ptr, ptr %0, align 8, !tbaa !5
  %4 = tail call i32 @dynbuf_count(ptr noundef %3)
  %.not = icmp eq i32 %4, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %2
  %wide.trip.count = zext i32 %4 to i64
  br label %.lr.ph

._crit_edge:                                      ; preds = %.lr.ph, %2
  %5 = load ptr, ptr @g_allocator_dopt, align 8, !tbaa !11
  tail call void @dynbuf_free(ptr noundef nonnull %0, ptr noundef %5)
  ret void

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %.lr.ph ]
  %6 = load ptr, ptr %0, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.CodecPngText, ptr %6, i64 %indvars.iv, i32 1
  %8 = load ptr, ptr @g_allocator_dopt, align 8, !tbaa !11
  tail call void @dynbuf_free(ptr noundef nonnull %7, ptr noundef %8)
  %9 = load ptr, ptr %0, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.CodecPngText, ptr %9, i64 %indvars.iv
  %11 = load ptr, ptr @g_allocator_dopt, align 8, !tbaa !11
  tail call void @dynbuf_free(ptr noundef %10, ptr noundef %11)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !12
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden i32 @dynbuf_count(ptr noundef) local_unnamed_addr #1

; Function Attrs: inlinehint nounwind uwtable
declare hidden void @dynbuf_free(ptr noundef, ptr noundef) local_unnamed_addr #1

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" }
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" }

!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 0}
!6 = !{!"CodecPng", !7, i64 0, !10, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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