; LLVM IR from specinfo-ua/UAPKI :: library/uapkic/src (math-int-internal)

; 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.WordArray_st = type { ptr, i64 }

; 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 nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local void @int_truncate(ptr noundef %0, i64 noundef %1) #2 {
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca i64, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i64 %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #3
  %6 = load i64, ptr %4, align 8, !tbaa !9
  %7 = lshr i64 %6, 6
  store i64 %7, ptr %5, align 8, !tbaa !9
  %8 = load i64, ptr %5, align 8, !tbaa !9
  %9 = load ptr, ptr %3, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.WordArray_st, ptr %9, i32 0, i32 1
  %11 = load i64, ptr %10, align 8, !tbaa !11
  %12 = icmp ult i64 %8, %11
  br i1 %12, label %13, label %38

13:                                               ; preds = %2
  %14 = load i64, ptr %4, align 8, !tbaa !9
  %15 = and i64 %14, 63
  %16 = shl i64 1, %15
  %17 = sub i64 %16, 1
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct.WordArray_st, ptr %18, i32 0, i32 0
  %20 = load ptr, ptr %19, align 8, !tbaa !13
  %21 = load i64, ptr %5, align 8, !tbaa !9
  %22 = getelementptr inbounds i64, ptr %20, i64 %21
  %23 = load i64, ptr %22, align 8, !tbaa !9
  %24 = and i64 %23, %17
  store i64 %24, ptr %22, align 8, !tbaa !9
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.WordArray_st, ptr %25, i32 0, i32 0
  %27 = load ptr, ptr %26, align 8, !tbaa !13
  %28 = load i64, ptr %5, align 8, !tbaa !9
  %29 = add i64 %28, 1
  %30 = getelementptr inbounds i64, ptr %27, i64 %29
  %31 = load ptr, ptr %3, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.WordArray_st, ptr %31, i32 0, i32 1
  %33 = load i64, ptr %32, align 8, !tbaa !11
  %34 = load i64, ptr %5, align 8, !tbaa !9
  %35 = sub i64 %33, %34
  %36 = sub i64 %35, 1
  %37 = mul i64 %36, 8
  call void @llvm.memset.p0.i64(ptr align 8 %30, i8 0, i64 %37, i1 false)
  br label %38

38:                                               ; preds = %13, %2
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #3
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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, !10, i64 8}
!12 = !{!"WordArray_st", !6, i64 0, !10, i64 8}
!13 = !{!12, !6, 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 nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #0

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(readwrite, inaccessiblemem: none) uwtable
define dso_local void @int_truncate(ptr nocapture noundef readonly %0, i64 noundef %1) local_unnamed_addr #1 {
  %3 = lshr i64 %1, 6
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load i64, ptr %4, align 8, !tbaa !5
  %6 = icmp ult i64 %3, %5
  br i1 %6, label %7, label %19

7:                                                ; preds = %2
  %8 = and i64 %1, 63
  %notmask = shl nsw i64 -1, %8
  %9 = xor i64 %notmask, -1
  %10 = load ptr, ptr %0, align 8, !tbaa !11
  %11 = getelementptr inbounds i64, ptr %10, i64 %3
  %12 = load i64, ptr %11, align 8, !tbaa !12
  %13 = and i64 %12, %9
  store i64 %13, ptr %11, align 8, !tbaa !12
  %14 = getelementptr inbounds i8, ptr %11, i64 8
  %15 = load i64, ptr %4, align 8, !tbaa !5
  %16 = xor i64 %3, -1
  %17 = add i64 %15, %16
  %18 = shl i64 %17, 3
  tail call void @llvm.memset.p0.i64(ptr nonnull align 8 %14, i8 0, i64 %18, i1 false)
  br label %19

19:                                               ; preds = %7, %2
  ret void
}

attributes #0 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #1 = { mustprogress nofree norecurse nosync nounwind willreturn memory(readwrite, inaccessiblemem: 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" }

!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, !10, i64 8}
!6 = !{!"WordArray_st", !7, i64 0, !10, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"long", !8, i64 0}
!11 = !{!6, !7, i64 0}
!12 = !{!10, !10, i64 0}


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