; LLVM IR from kostya/crystal-benchmarks-game :: meteor (meteor)

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

; 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 i64 @bitmask_from_cells(ptr noundef %0) #1 {
  %2 = alloca ptr, align 8
  %3 = alloca i64, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #2
  store i64 0, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  store i32 0, ptr %4, align 4, !tbaa !11
  br label %5

5:                                                ; preds = %19, %1
  %6 = load i32, ptr %4, align 4, !tbaa !11
  %7 = icmp slt i32 %6, 5
  br i1 %7, label %8, label %22

8:                                                ; preds = %5
  %9 = load ptr, ptr %2, align 8, !tbaa !5
  %10 = load i32, ptr %4, align 4, !tbaa !11
  %11 = sext i32 %10 to i64
  %12 = getelementptr inbounds i8, ptr %9, i64 %11
  %13 = load i8, ptr %12, align 1, !tbaa !13
  %14 = sext i8 %13 to i32
  %15 = zext i32 %14 to i64
  %16 = shl i64 1, %15
  %17 = load i64, ptr %3, align 8, !tbaa !9
  %18 = or i64 %17, %16
  store i64 %18, ptr %3, align 8, !tbaa !9
  br label %19

19:                                               ; preds = %8
  %20 = load i32, ptr %4, align 4, !tbaa !11
  %21 = add nsw i32 %20, 1
  store i32 %21, ptr %4, align 4, !tbaa !11
  br label %5, !llvm.loop !14

22:                                               ; preds = %5
  %23 = load i64, ptr %3, align 8, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #2
  ret i64 %23
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { 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 long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"llvm.loop.mustprogress"}


; 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(argmem: read) uwtable
define dso_local i64 @bitmask_from_cells(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = load i8, ptr %0, align 1, !tbaa !5
  %3 = sext i8 %2 to i64
  %4 = and i64 %3, 4294967295
  %5 = shl nuw i64 1, %4
  %6 = getelementptr inbounds i8, ptr %0, i64 1
  %7 = load i8, ptr %6, align 1, !tbaa !5
  %8 = sext i8 %7 to i64
  %9 = and i64 %8, 4294967295
  %10 = shl nuw i64 1, %9
  %11 = or i64 %10, %5
  %12 = getelementptr inbounds i8, ptr %0, i64 2
  %13 = load i8, ptr %12, align 1, !tbaa !5
  %14 = sext i8 %13 to i64
  %15 = and i64 %14, 4294967295
  %16 = shl nuw i64 1, %15
  %17 = or i64 %16, %11
  %18 = getelementptr inbounds i8, ptr %0, i64 3
  %19 = load i8, ptr %18, align 1, !tbaa !5
  %20 = sext i8 %19 to i64
  %21 = and i64 %20, 4294967295
  %22 = shl nuw i64 1, %21
  %23 = or i64 %22, %17
  %24 = getelementptr inbounds i8, ptr %0, i64 4
  %25 = load i8, ptr %24, align 1, !tbaa !5
  %26 = sext i8 %25 to i64
  %27 = and i64 %26, 4294967295
  %28 = shl nuw i64 1, %27
  %29 = or i64 %28, %23
  ret i64 %29
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: read) 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, !6, i64 0}
!6 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LCSSAPass,LoopRotatePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass