; LLVM IR from Iotic-Labs/py-lz4framed :: lz4 (lz4frame)

; 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.LZ4F_dctx_s = type { %struct.LZ4F_frameInfo_t, i32, i32, i64, i64, i64, ptr, i64, i64, ptr, ptr, i64, ptr, i64, i64, %struct.XXH32_state_s, %struct.XXH32_state_s, [19 x i8] }
%struct.LZ4F_frameInfo_t = type { i32, i32, i32, i32, i64, i32, i32 }
%struct.XXH32_state_s = type { i32, i32, i32, i32, i32, i32, [4 x i32], 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
declare void @free(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local i64 @LZ4F_freeDecompressionContext(ptr noundef %0) #2 {
  %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) #3
  store i64 0, ptr %3, align 8, !tbaa !9
  %4 = load ptr, ptr %2, align 8, !tbaa !5
  %5 = icmp ne ptr %4, null
  br i1 %5, label %6, label %18

6:                                                ; preds = %1
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.LZ4F_dctx_s, ptr %7, i32 0, i32 2
  %9 = load i32, ptr %8, align 4, !tbaa !11
  %10 = zext i32 %9 to i64
  store i64 %10, ptr %3, align 8, !tbaa !9
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.LZ4F_dctx_s, ptr %11, i32 0, i32 6
  %13 = load ptr, ptr %12, align 8, !tbaa !17
  call void @free(ptr noundef %13) #3
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.LZ4F_dctx_s, ptr %14, i32 0, i32 9
  %16 = load ptr, ptr %15, align 8, !tbaa !18
  call void @free(ptr noundef %16) #3
  %17 = load ptr, ptr %2, align 8, !tbaa !5
  call void @free(ptr noundef %17) #3
  br label %18

18:                                               ; preds = %6, %1
  %19 = load i64, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #3
  ret i64 %19
}

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 = { 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 = !{!"long", !7, i64 0}
!11 = !{!12, !14, i64 36}
!12 = !{!"LZ4F_dctx_s", !13, i64 0, !14, i64 32, !14, i64 36, !10, i64 40, !10, i64 48, !10, i64 56, !6, i64 64, !10, i64 72, !10, i64 80, !6, i64 88, !6, i64 96, !10, i64 104, !6, i64 112, !10, i64 120, !10, i64 128, !16, i64 136, !16, i64 184, !7, i64 232}
!13 = !{!"", !14, i64 0, !14, i64 4, !14, i64 8, !14, i64 12, !15, i64 16, !14, i64 24, !14, i64 28}
!14 = !{!"int", !7, i64 0}
!15 = !{!"long long", !7, i64 0}
!16 = !{!"XXH32_state_s", !14, i64 0, !14, i64 4, !14, i64 8, !14, i64 12, !14, i64 16, !14, i64 20, !7, i64 24, !14, i64 40, !14, i64 44}
!17 = !{!12, !6, i64 64}
!18 = !{!12, !6, i64 88}


; 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 willreturn uwtable
define dso_local range(i64 0, 4294967296) i64 @LZ4F_freeDecompressionContext(ptr noundef %0) local_unnamed_addr #1 {
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %10, label %2

2:                                                ; preds = %1
  %3 = getelementptr inbounds i8, ptr %0, i64 36
  %4 = load i32, ptr %3, align 4, !tbaa !5
  %5 = zext i32 %4 to i64
  %6 = getelementptr inbounds i8, ptr %0, i64 64
  %7 = load ptr, ptr %6, align 8, !tbaa !15
  tail call void @free(ptr noundef %7) #2
  %8 = getelementptr inbounds i8, ptr %0, i64 88
  %9 = load ptr, ptr %8, align 8, !tbaa !16
  tail call void @free(ptr noundef %9) #2
  tail call void @free(ptr noundef nonnull %0) #2
  br label %10

10:                                               ; preds = %2, %1
  %.0 = phi i64 [ %5, %2 ], [ 0, %1 ]
  ret i64 %.0
}

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 willreturn 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, !8, i64 36}
!6 = !{!"LZ4F_dctx_s", !7, i64 0, !8, i64 32, !8, i64 36, !12, i64 40, !12, i64 48, !12, i64 56, !13, i64 64, !12, i64 72, !12, i64 80, !13, i64 88, !13, i64 96, !12, i64 104, !13, i64 112, !12, i64 120, !12, i64 128, !14, i64 136, !14, i64 184, !9, i64 232}
!7 = !{!"", !8, i64 0, !8, i64 4, !8, i64 8, !8, i64 12, !11, i64 16, !8, i64 24, !8, i64 28}
!8 = !{!"int", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}
!11 = !{!"long long", !9, i64 0}
!12 = !{!"long", !9, i64 0}
!13 = !{!"any pointer", !9, i64 0}
!14 = !{!"XXH32_state_s", !8, i64 0, !8, i64 4, !8, i64 8, !8, i64 12, !8, i64 16, !8, i64 20, !9, i64 24, !8, i64 40, !8, i64 44}
!15 = !{!6, !13, i64 64}
!16 = !{!6, !13, i64 88}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,TailCallElimPass