; LLVM IR from ssloy/tinyraycaster :: map.ll (ZNK3Map8is_emptyEmm)

; 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.Map = type { i64, i64 }

@.str.1 = external hidden unnamed_addr constant [61 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [35 x i8], align 1
@_ZL3map = external hidden constant [257 x i8], align 16
@__PRETTY_FUNCTION__._ZNK3Map8is_emptyEmm = external hidden unnamed_addr constant [53 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 zeroext i1 @_ZNK3Map8is_emptyEmm(ptr noundef nonnull align 8 dereferenceable(16) %0, i64 noundef %1, i64 noundef %2) #1 align 2 {
  %4 = alloca ptr, align 8
  %5 = alloca i64, align 8
  %6 = alloca i64, align 8
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i64 %1, ptr %5, align 8, !tbaa !9
  store i64 %2, ptr %6, align 8, !tbaa !9
  %7 = load ptr, ptr %4, align 8
  %8 = load i64, ptr %5, align 8, !tbaa !9
  %9 = getelementptr inbounds %struct.Map, ptr %7, i32 0, i32 0
  %10 = load i64, ptr %9, align 8, !tbaa !11
  %11 = icmp ult i64 %8, %10
  br i1 %11, label %12, label %25

12:                                               ; preds = %3
  %13 = load i64, ptr %6, align 8, !tbaa !9
  %14 = getelementptr inbounds %struct.Map, ptr %7, i32 0, i32 1
  %15 = load i64, ptr %14, align 8, !tbaa !13
  %16 = icmp ult i64 %13, %15
  br i1 %16, label %17, label %25

17:                                               ; preds = %12
  %18 = getelementptr inbounds %struct.Map, ptr %7, i32 0, i32 0
  %19 = load i64, ptr %18, align 8, !tbaa !11
  %20 = getelementptr inbounds %struct.Map, ptr %7, i32 0, i32 1
  %21 = load i64, ptr %20, align 8, !tbaa !13
  %22 = mul i64 %19, %21
  %23 = add i64 %22, 1
  %24 = icmp eq i64 257, %23
  br label %25

25:                                               ; preds = %17, %12, %3
  %26 = phi i1 [ false, %12 ], [ false, %3 ], [ %24, %17 ]
  br i1 %26, label %27, label %28

27:                                               ; preds = %25
  br label %30

28:                                               ; preds = %25
  call void @__assert_fail(ptr noundef @.str.2, ptr noundef @.str.1, i32 noundef 31, ptr noundef @__PRETTY_FUNCTION__._ZNK3Map8is_emptyEmm) #2
  unreachable

29:                                               ; No predecessors!
  br label %30

30:                                               ; preds = %29, %27
  %31 = load i64, ptr %5, align 8, !tbaa !9
  %32 = load i64, ptr %6, align 8, !tbaa !9
  %33 = getelementptr inbounds %struct.Map, ptr %7, i32 0, i32 0
  %34 = load i64, ptr %33, align 8, !tbaa !11
  %35 = mul i64 %32, %34
  %36 = add i64 %31, %35
  %37 = getelementptr inbounds [257 x i8], ptr @_ZL3map, i64 0, i64 %36
  %38 = load i8, ptr %37, align 1, !tbaa !14
  %39 = sext i8 %38 to i32
  %40 = icmp eq i32 %39, 32
  ret i1 %40
}

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 = !{!"long", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"_ZTS3Map", !10, i64 0, !10, i64 8}
!13 = !{!12, !10, i64 8}
!14 = !{!7, !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"

@.str.1 = external hidden unnamed_addr constant [61 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [35 x i8], align 1
@_ZL3map = external hidden local_unnamed_addr constant [257 x i8], align 16
@__PRETTY_FUNCTION__._ZNK3Map8is_emptyEmm = external hidden unnamed_addr constant [53 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 zeroext i1 @_ZNK3Map8is_emptyEmm(ptr nocapture noundef nonnull readonly align 8 dereferenceable(16) %0, i64 noundef %1, i64 noundef %2) local_unnamed_addr #1 align 2 {
  %4 = load i64, ptr %0, align 8, !tbaa !5
  %5 = icmp ugt i64 %4, %1
  br i1 %5, label %6, label %.critedge

6:                                                ; preds = %3
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  %8 = load i64, ptr %7, align 8, !tbaa !10
  %9 = icmp ugt i64 %8, %2
  %10 = mul i64 %8, %4
  %11 = icmp eq i64 %10, 256
  %or.cond = and i1 %9, %11
  br i1 %or.cond, label %12, label %.critedge

.critedge:                                        ; preds = %6, %3
  tail call void @__assert_fail(ptr noundef nonnull @.str.2, ptr noundef nonnull @.str.1, i32 noundef 31, ptr noundef nonnull @__PRETTY_FUNCTION__._ZNK3Map8is_emptyEmm) #2
  unreachable

12:                                               ; preds = %6
  %13 = mul i64 %4, %2
  %14 = add i64 %13, %1
  %15 = getelementptr inbounds [257 x i8], ptr @_ZL3map, i64 0, i64 %14
  %16 = load i8, ptr %15, align 1, !tbaa !11
  %17 = icmp eq i8 %16, 32
  ret i1 %17
}

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 = !{!"_ZTS3Map", !7, i64 0, !7, i64 8}
!7 = !{!"long", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!6, !7, i64 8}
!11 = !{!8, !8, i64 0}


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