; LLVM IR from xboot/libcg :: src (xft)

; 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"

; Function Attrs: nounwind uwtable
define dso_local i64 @XCG_FT_MulFix(i64 noundef %0, i64 noundef %1) #0 {
  %3 = alloca i64, align 8
  %4 = alloca i64, align 8
  %5 = alloca i32, align 4
  %6 = alloca i64, align 8
  store i64 %0, ptr %3, align 8, !tbaa !5
  store i64 %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 1, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #2
  br label %7

7:                                                ; preds = %2
  %8 = load i64, ptr %3, align 8, !tbaa !5
  %9 = icmp slt i64 %8, 0
  br i1 %9, label %10, label %15

10:                                               ; preds = %7
  %11 = load i64, ptr %3, align 8, !tbaa !5
  %12 = sub nsw i64 0, %11
  store i64 %12, ptr %3, align 8, !tbaa !5
  %13 = load i32, ptr %5, align 4, !tbaa !9
  %14 = sub nsw i32 0, %13
  store i32 %14, ptr %5, align 4, !tbaa !9
  br label %15

15:                                               ; preds = %10, %7
  br label %16

16:                                               ; preds = %15
  br label %17

17:                                               ; preds = %16
  br label %18

18:                                               ; preds = %17
  %19 = load i64, ptr %4, align 8, !tbaa !5
  %20 = icmp slt i64 %19, 0
  br i1 %20, label %21, label %26

21:                                               ; preds = %18
  %22 = load i64, ptr %4, align 8, !tbaa !5
  %23 = sub nsw i64 0, %22
  store i64 %23, ptr %4, align 8, !tbaa !5
  %24 = load i32, ptr %5, align 4, !tbaa !9
  %25 = sub nsw i32 0, %24
  store i32 %25, ptr %5, align 4, !tbaa !9
  br label %26

26:                                               ; preds = %21, %18
  br label %27

27:                                               ; preds = %26
  br label %28

28:                                               ; preds = %27
  %29 = load i64, ptr %3, align 8, !tbaa !5
  %30 = load i64, ptr %4, align 8, !tbaa !5
  %31 = mul nsw i64 %29, %30
  %32 = add nsw i64 %31, 32768
  %33 = ashr i64 %32, 16
  store i64 %33, ptr %6, align 8, !tbaa !5
  %34 = load i32, ptr %5, align 4, !tbaa !9
  %35 = icmp sgt i32 %34, 0
  br i1 %35, label %36, label %38

36:                                               ; preds = %28
  %37 = load i64, ptr %6, align 8, !tbaa !5
  br label %41

38:                                               ; preds = %28
  %39 = load i64, ptr %6, align 8, !tbaa !5
  %40 = sub nsw i64 0, %39
  br label %41

41:                                               ; preds = %38, %36
  %42 = phi i64 [ %37, %36 ], [ %40, %38 ]
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i64 %42
}

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

; 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 = { 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 = !{!"long", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}


; 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(none) uwtable
define dso_local range(i64 -140737488355327, 140737488355328) i64 @XCG_FT_MulFix(i64 noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = icmp slt i64 %0, 0
  %spec.select = select i1 %3, i32 -1, i32 1
  %4 = icmp slt i64 %1, 0
  %5 = sub nsw i32 0, %spec.select
  %.1 = select i1 %4, i32 %5, i32 %spec.select
  %6 = mul nsw i64 %1, %0
  %7 = tail call i64 @llvm.abs.i64(i64 %6, i1 true)
  %8 = add nuw nsw i64 %7, 32768
  %9 = lshr i64 %8, 16
  %10 = icmp sgt i32 %.1, 0
  %11 = sub nsw i64 0, %9
  %12 = select i1 %10, i64 %9, i64 %11
  ret i64 %12
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i64 @llvm.abs.i64(i64, i1 immarg) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) 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 speculatable willreturn memory(none) }

!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)"}


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