; LLVM IR from thalium/icebox :: third_party/virtualbox/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Universal (Mtftp4AllocateRange)

; 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.MTFTP4_BLOCK_RANGE = type { %struct._LIST_ENTRY, i64, i64, i64, i64 }
%struct._LIST_ENTRY = type { ptr, ptr }

; Function Attrs: nounwind uwtable
define dso_local ptr @Mtftp4AllocateRange(i16 noundef zeroext %0, i16 noundef zeroext %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i16, align 2
  %5 = alloca i16, align 2
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  store i16 %0, ptr %4, align 2, !tbaa !5
  store i16 %1, ptr %5, align 2, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %8 = call ptr @AllocateZeroPool(i64 noundef 48)
  store ptr %8, ptr %6, align 8, !tbaa !9
  %9 = load ptr, ptr %6, align 8, !tbaa !9
  %10 = icmp eq ptr %9, null
  br i1 %10, label %11, label %12

11:                                               ; preds = %2
  store ptr null, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %29

12:                                               ; preds = %2
  %13 = load ptr, ptr %6, align 8, !tbaa !9
  %14 = getelementptr inbounds %struct.MTFTP4_BLOCK_RANGE, ptr %13, i32 0, i32 0
  %15 = call ptr @InitializeListHead(ptr noundef %14)
  %16 = load i16, ptr %4, align 2, !tbaa !5
  %17 = zext i16 %16 to i64
  %18 = load ptr, ptr %6, align 8, !tbaa !9
  %19 = getelementptr inbounds %struct.MTFTP4_BLOCK_RANGE, ptr %18, i32 0, i32 1
  store i64 %17, ptr %19, align 8, !tbaa !11
  %20 = load i16, ptr %5, align 2, !tbaa !5
  %21 = zext i16 %20 to i64
  %22 = load ptr, ptr %6, align 8, !tbaa !9
  %23 = getelementptr inbounds %struct.MTFTP4_BLOCK_RANGE, ptr %22, i32 0, i32 2
  store i64 %21, ptr %23, align 8, !tbaa !15
  %24 = load i16, ptr %5, align 2, !tbaa !5
  %25 = zext i16 %24 to i64
  %26 = load ptr, ptr %6, align 8, !tbaa !9
  %27 = getelementptr inbounds %struct.MTFTP4_BLOCK_RANGE, ptr %26, i32 0, i32 4
  store i64 %25, ptr %27, align 8, !tbaa !16
  %28 = load ptr, ptr %6, align 8, !tbaa !9
  store ptr %28, ptr %3, align 8
  store i32 1, ptr %7, align 4
  br label %29

29:                                               ; preds = %12, %11
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  %30 = load ptr, ptr %3, align 8
  ret ptr %30
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare ptr @AllocateZeroPool(i64 noundef) #2

declare ptr @InitializeListHead(ptr noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "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 = !{!"short", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = !{!12, !14, i64 16}
!12 = !{!"", !13, i64 0, !14, i64 16, !14, i64 24, !14, i64 32, !14, i64 40}
!13 = !{!"_LIST_ENTRY", !10, i64 0, !10, i64 8}
!14 = !{!"long long", !7, i64 0}
!15 = !{!12, !14, i64 24}
!16 = !{!12, !14, i64 40}


; 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 ptr @Mtftp4AllocateRange(i16 noundef zeroext %0, i16 noundef zeroext %1) local_unnamed_addr #0 {
  %3 = tail call ptr @AllocateZeroPool(i64 noundef 48) #2
  %4 = icmp eq ptr %3, null
  br i1 %4, label %12, label %5

5:                                                ; preds = %2
  %6 = tail call ptr @InitializeListHead(ptr noundef nonnull %3) #2
  %7 = zext i16 %0 to i64
  %8 = getelementptr inbounds i8, ptr %3, i64 16
  store i64 %7, ptr %8, align 8, !tbaa !5
  %9 = zext i16 %1 to i64
  %10 = getelementptr inbounds i8, ptr %3, i64 24
  store i64 %9, ptr %10, align 8, !tbaa !12
  %11 = getelementptr inbounds i8, ptr %3, i64 40
  store i64 %9, ptr %11, align 8, !tbaa !13
  br label %12

12:                                               ; preds = %2, %5
  ret ptr %3
}

declare ptr @AllocateZeroPool(i64 noundef) local_unnamed_addr #1

declare ptr @InitializeListHead(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 = { "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, !11, i64 16}
!6 = !{!"", !7, i64 0, !11, i64 16, !11, i64 24, !11, i64 32, !11, i64 40}
!7 = !{!"_LIST_ENTRY", !8, i64 0, !8, i64 8}
!8 = !{!"any pointer", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}
!11 = !{!"long long", !9, i64 0}
!12 = !{!6, !11, i64 24}
!13 = !{!6, !11, i64 40}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,SROAPass,SimplifyCFGPass,TailCallElimPass