; LLVM IR from SSBMTonberry/pocketlzma :: ref_spec/lzma1900/CPP/7zip/Common/OutBuffer.ll (ZNK10COutBuffer16GetProcessedSizeEv)

; 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"

%class.COutBuffer = type <{ ptr, i32, i32, i32, i32, ptr, i64, ptr, i8, [7 x i8] }>

; 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 i64 @_ZNK10COutBuffer16GetProcessedSizeEv(ptr noundef nonnull align 8 dereferenceable(49) %0) #1 align 2 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  %4 = load ptr, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  %5 = getelementptr inbounds %class.COutBuffer, ptr %4, i32 0, i32 6
  %6 = load i64, ptr %5, align 8, !tbaa !9
  %7 = getelementptr inbounds %class.COutBuffer, ptr %4, i32 0, i32 1
  %8 = load i32, ptr %7, align 8, !tbaa !14
  %9 = zext i32 %8 to i64
  %10 = add i64 %6, %9
  %11 = getelementptr inbounds %class.COutBuffer, ptr %4, i32 0, i32 3
  %12 = load i32, ptr %11, align 8, !tbaa !15
  %13 = zext i32 %12 to i64
  %14 = sub i64 %10, %13
  store i64 %14, ptr %3, align 8, !tbaa !16
  %15 = getelementptr inbounds %class.COutBuffer, ptr %4, i32 0, i32 3
  %16 = load i32, ptr %15, align 8, !tbaa !15
  %17 = getelementptr inbounds %class.COutBuffer, ptr %4, i32 0, i32 1
  %18 = load i32, ptr %17, align 8, !tbaa !14
  %19 = icmp ugt i32 %16, %18
  br i1 %19, label %20, label %26

20:                                               ; preds = %1
  %21 = getelementptr inbounds %class.COutBuffer, ptr %4, i32 0, i32 4
  %22 = load i32, ptr %21, align 4, !tbaa !17
  %23 = zext i32 %22 to i64
  %24 = load i64, ptr %3, align 8, !tbaa !16
  %25 = add i64 %24, %23
  store i64 %25, ptr %3, align 8, !tbaa !16
  br label %26

26:                                               ; preds = %20, %1
  %27 = load i64, ptr %3, align 8, !tbaa !16
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  ret i64 %27
}

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, !12, i64 32}
!10 = !{!"_ZTS10COutBuffer", !6, i64 0, !11, i64 8, !11, i64 12, !11, i64 16, !11, i64 20, !6, i64 24, !12, i64 32, !6, i64 40, !13, i64 48}
!11 = !{!"int", !7, i64 0}
!12 = !{!"long long", !7, i64 0}
!13 = !{!"bool", !7, i64 0}
!14 = !{!10, !11, i64 8}
!15 = !{!10, !11, i64 16}
!16 = !{!12, !12, i64 0}
!17 = !{!10, !11, i64 20}


; 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(argmem: read) uwtable
define dso_local noundef i64 @_ZNK10COutBuffer16GetProcessedSizeEv(ptr nocapture noundef nonnull readonly align 8 dereferenceable(49) %0) local_unnamed_addr #0 align 2 {
  %2 = getelementptr inbounds i8, ptr %0, i64 32
  %3 = load i64, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load i32, ptr %4, align 8, !tbaa !13
  %6 = zext i32 %5 to i64
  %7 = add i64 %3, %6
  %8 = getelementptr inbounds i8, ptr %0, i64 16
  %9 = load i32, ptr %8, align 8, !tbaa !14
  %10 = zext i32 %9 to i64
  %11 = sub i64 %7, %10
  %12 = icmp ugt i32 %9, %5
  %13 = getelementptr inbounds i8, ptr %0, i64 20
  %14 = load i32, ptr %13, align 4
  %narrow = select i1 %12, i32 %14, i32 0
  %15 = zext i32 %narrow to i64
  %.0 = add i64 %11, %15
  ret i64 %.0
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) 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, !11, i64 32}
!6 = !{!"_ZTS10COutBuffer", !7, i64 0, !10, i64 8, !10, i64 12, !10, i64 16, !10, i64 20, !7, i64 24, !11, i64 32, !7, i64 40, !12, i64 48}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}
!11 = !{!"long long", !8, i64 0}
!12 = !{!"bool", !8, i64 0}
!13 = !{!6, !10, i64 8}
!14 = !{!6, !10, i64 16}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass