; LLVM IR from Ubpa/USTC_CG :: Homeworks/0_CppPratices/samples/src/executables/1_BasicDArray/DArray.ll (ZN6DArrayixEi)

; 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.DArray = type <{ ptr, i32, [4 x i8] }>

@.str.3 = external hidden unnamed_addr constant [32 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [119 x i8], align 1
@__PRETTY_FUNCTION__._ZN6DArrayixEi = external hidden unnamed_addr constant [32 x i8], align 1

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN6DArrayixEi(ptr noundef nonnull align 8 dereferenceable(12) %0, i32 noundef %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %5 = load ptr, ptr %3, align 8
  %6 = load i32, ptr %4, align 4, !tbaa !9
  %7 = icmp sge i32 %6, 0
  br i1 %7, label %8, label %13

8:                                                ; preds = %2
  %9 = load i32, ptr %4, align 4, !tbaa !9
  %10 = getelementptr inbounds %class.DArray, ptr %5, i32 0, i32 1
  %11 = load i32, ptr %10, align 8, !tbaa !11
  %12 = icmp slt i32 %9, %11
  br label %13

13:                                               ; preds = %8, %2
  %14 = phi i1 [ false, %2 ], [ %12, %8 ]
  br i1 %14, label %15, label %16

15:                                               ; preds = %13
  br label %18

16:                                               ; preds = %13
  call void @__assert_fail(ptr noundef @.str.3, ptr noundef @.str.4, i32 noundef 94, ptr noundef @__PRETTY_FUNCTION__._ZN6DArrayixEi) #2
  unreachable

17:                                               ; No predecessors!
  br label %18

18:                                               ; preds = %17, %15
  %19 = getelementptr inbounds %class.DArray, ptr %5, i32 0, i32 0
  %20 = load ptr, ptr %19, align 8, !tbaa !13
  %21 = load i32, ptr %4, align 4, !tbaa !9
  %22 = sext i32 %21 to i64
  %23 = getelementptr inbounds double, ptr %20, i64 %22
  ret ptr %23
}

attributes #0 = { noreturn 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 #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 = { noreturn 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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 8}
!12 = !{!"_ZTS6DArray", !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"

@.str.3 = external hidden unnamed_addr constant [32 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [119 x i8], align 1
@__PRETTY_FUNCTION__._ZN6DArrayixEi = external hidden unnamed_addr constant [32 x i8], align 1

; Function Attrs: noreturn nounwind
declare void @__assert_fail(ptr noundef, ptr noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef nonnull align 8 dereferenceable(8) ptr @_ZN6DArrayixEi(ptr nocapture noundef nonnull readonly align 8 dereferenceable(12) %0, i32 noundef %1) local_unnamed_addr #1 align 2 {
  %3 = icmp sgt i32 %1, -1
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load i32, ptr %4, align 8
  %6 = icmp sgt i32 %5, %1
  %or.cond = select i1 %3, i1 %6, i1 false
  br i1 %or.cond, label %7, label %.critedge

.critedge:                                        ; preds = %2
  tail call void @__assert_fail(ptr noundef nonnull @.str.3, ptr noundef nonnull @.str.4, i32 noundef 94, ptr noundef nonnull @__PRETTY_FUNCTION__._ZN6DArrayixEi) #2
  unreachable

7:                                                ; preds = %2
  %8 = load ptr, ptr %0, align 8, !tbaa !5
  %9 = zext nneg i32 %1 to i64
  %10 = getelementptr inbounds double, ptr %8, i64 %9
  ret ptr %10
}

attributes #0 = { noreturn 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 #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 = { noreturn 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, !7, i64 0}
!6 = !{!"_ZTS6DArray", !7, i64 0, !10, i64 8}
!7 = !{!"any pointer", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!"int", !8, i64 0}


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