; LLVM IR from simbody/simbody :: Simbody/Visualizer/simbody-visualizer/lodepng.ll (Z19LodePNG_IText_clearP13LodePNG_IText)

; 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.LodePNG_IText = type { i64, ptr, 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: nounwind
declare void @free(ptr noundef) #1

; Function Attrs: mustprogress nounwind uwtable
declare hidden void @_ZL14string_cleanupPPc(ptr noundef) #2

; Function Attrs: mustprogress uwtable
define dso_local void @_Z19LodePNG_IText_clearP13LodePNG_IText(ptr noundef %0) #3 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  store i64 0, ptr %3, align 8, !tbaa !9
  br label %4

4:                                                ; preds = %31, %1
  %5 = load i64, ptr %3, align 8, !tbaa !9
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = getelementptr inbounds %struct.LodePNG_IText, ptr %6, i32 0, i32 0
  %8 = load i64, ptr %7, align 8, !tbaa !11
  %9 = icmp ult i64 %5, %8
  br i1 %9, label %10, label %34

10:                                               ; preds = %4
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.LodePNG_IText, ptr %11, i32 0, i32 1
  %13 = load ptr, ptr %12, align 8, !tbaa !13
  %14 = load i64, ptr %3, align 8, !tbaa !9
  %15 = getelementptr inbounds ptr, ptr %13, i64 %14
  call void @_ZL14string_cleanupPPc(ptr noundef %15)
  %16 = load ptr, ptr %2, align 8, !tbaa !5
  %17 = getelementptr inbounds %struct.LodePNG_IText, ptr %16, i32 0, i32 2
  %18 = load ptr, ptr %17, align 8, !tbaa !14
  %19 = load i64, ptr %3, align 8, !tbaa !9
  %20 = getelementptr inbounds ptr, ptr %18, i64 %19
  call void @_ZL14string_cleanupPPc(ptr noundef %20)
  %21 = load ptr, ptr %2, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.LodePNG_IText, ptr %21, i32 0, i32 3
  %23 = load ptr, ptr %22, align 8, !tbaa !15
  %24 = load i64, ptr %3, align 8, !tbaa !9
  %25 = getelementptr inbounds ptr, ptr %23, i64 %24
  call void @_ZL14string_cleanupPPc(ptr noundef %25)
  %26 = load ptr, ptr %2, align 8, !tbaa !5
  %27 = getelementptr inbounds %struct.LodePNG_IText, ptr %26, i32 0, i32 4
  %28 = load ptr, ptr %27, align 8, !tbaa !16
  %29 = load i64, ptr %3, align 8, !tbaa !9
  %30 = getelementptr inbounds ptr, ptr %28, i64 %29
  call void @_ZL14string_cleanupPPc(ptr noundef %30)
  br label %31

31:                                               ; preds = %10
  %32 = load i64, ptr %3, align 8, !tbaa !9
  %33 = add i64 %32, 1
  store i64 %33, ptr %3, align 8, !tbaa !9
  br label %4, !llvm.loop !17

34:                                               ; preds = %4
  %35 = load ptr, ptr %2, align 8, !tbaa !5
  %36 = getelementptr inbounds %struct.LodePNG_IText, ptr %35, i32 0, i32 1
  %37 = load ptr, ptr %36, align 8, !tbaa !13
  call void @free(ptr noundef %37) #4
  %38 = load ptr, ptr %2, align 8, !tbaa !5
  %39 = getelementptr inbounds %struct.LodePNG_IText, ptr %38, i32 0, i32 2
  %40 = load ptr, ptr %39, align 8, !tbaa !14
  call void @free(ptr noundef %40) #4
  %41 = load ptr, ptr %2, align 8, !tbaa !5
  %42 = getelementptr inbounds %struct.LodePNG_IText, ptr %41, i32 0, i32 3
  %43 = load ptr, ptr %42, align 8, !tbaa !15
  call void @free(ptr noundef %43) #4
  %44 = load ptr, ptr %2, align 8, !tbaa !5
  %45 = getelementptr inbounds %struct.LodePNG_IText, ptr %44, i32 0, i32 4
  %46 = load ptr, ptr %45, align 8, !tbaa !16
  call void @free(ptr noundef %46) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nounwind "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 = { 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 #3 = { mustprogress 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 #4 = { 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 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"_ZTS13LodePNG_IText", !10, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32}
!13 = !{!12, !6, i64 8}
!14 = !{!12, !6, i64 16}
!15 = !{!12, !6, i64 24}
!16 = !{!12, !6, i64 32}
!17 = distinct !{!17, !18}
!18 = !{!"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 nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
declare hidden void @_ZL14string_cleanupPPc(ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z19LodePNG_IText_clearP13LodePNG_IText(ptr nocapture noundef readonly %0) local_unnamed_addr #1 {
  %2 = load i64, ptr %0, align 8, !tbaa !5
  %.not = icmp eq i64 %2, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1
  %3 = getelementptr inbounds i8, ptr %0, i64 8
  %4 = getelementptr inbounds i8, ptr %0, i64 16
  %5 = getelementptr inbounds i8, ptr %0, i64 24
  %6 = getelementptr inbounds i8, ptr %0, i64 32
  br label %7

7:                                                ; preds = %.lr.ph, %7
  %.014 = phi i64 [ 0, %.lr.ph ], [ %16, %7 ]
  %8 = load ptr, ptr %3, align 8, !tbaa !11
  %9 = getelementptr inbounds ptr, ptr %8, i64 %.014
  tail call void @_ZL14string_cleanupPPc(ptr noundef %9)
  %10 = load ptr, ptr %4, align 8, !tbaa !12
  %11 = getelementptr inbounds ptr, ptr %10, i64 %.014
  tail call void @_ZL14string_cleanupPPc(ptr noundef %11)
  %12 = load ptr, ptr %5, align 8, !tbaa !13
  %13 = getelementptr inbounds ptr, ptr %12, i64 %.014
  tail call void @_ZL14string_cleanupPPc(ptr noundef %13)
  %14 = load ptr, ptr %6, align 8, !tbaa !14
  %15 = getelementptr inbounds ptr, ptr %14, i64 %.014
  tail call void @_ZL14string_cleanupPPc(ptr noundef %15)
  %16 = add nuw i64 %.014, 1
  %17 = load i64, ptr %0, align 8, !tbaa !5
  %18 = icmp ult i64 %16, %17
  br i1 %18, label %7, label %._crit_edge, !llvm.loop !15

._crit_edge:                                      ; preds = %7, %1
  %19 = getelementptr inbounds i8, ptr %0, i64 8
  %20 = load ptr, ptr %19, align 8, !tbaa !11
  tail call void @free(ptr noundef %20) #2
  %21 = getelementptr inbounds i8, ptr %0, i64 16
  %22 = load ptr, ptr %21, align 8, !tbaa !12
  tail call void @free(ptr noundef %22) #2
  %23 = getelementptr inbounds i8, ptr %0, i64 24
  %24 = load ptr, ptr %23, align 8, !tbaa !13
  tail call void @free(ptr noundef %24) #2
  %25 = getelementptr inbounds i8, ptr %0, i64 32
  %26 = load ptr, ptr %25, align 8, !tbaa !14
  tail call void @free(ptr noundef %26) #2
  ret void
}

attributes #0 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = { 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, !7, i64 0}
!6 = !{!"_ZTS13LodePNG_IText", !7, i64 0, !10, i64 8, !10, i64 16, !10, i64 24, !10, i64 32}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!6, !10, i64 16}
!13 = !{!6, !10, i64 24}
!14 = !{!6, !10, i64 32}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


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