; LLVM IR from aap/pdp6 :: fe6 (fe)

; 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.Assembler = type { [4 x i64], i32, i64, i32, i32 }

@as = external dso_local global %struct.Assembler, align 8

; Function Attrs: nounwind uwtable
define dso_local void @resetexp() #0 {
  store i64 0, ptr @as, align 8, !tbaa !5
  store i64 0, ptr getelementptr inbounds ([4 x i64], ptr @as, i64 0, i64 1), align 8, !tbaa !5
  store i64 0, ptr getelementptr inbounds ([4 x i64], ptr @as, i64 0, i64 2), align 8, !tbaa !5
  store i64 0, ptr getelementptr inbounds ([4 x i64], ptr @as, i64 0, i64 3), align 8, !tbaa !5
  store i32 0, ptr getelementptr inbounds (%struct.Assembler, ptr @as, i32 0, i32 1), align 8, !tbaa !9
  store i64 0, ptr getelementptr inbounds (%struct.Assembler, ptr @as, i32 0, i32 2), align 8, !tbaa !12
  store i32 0, ptr getelementptr inbounds (%struct.Assembler, ptr @as, i32 0, i32 3), align 8, !tbaa !13
  store i32 0, ptr getelementptr inbounds (%struct.Assembler, ptr @as, i32 0, i32 4), align 4, !tbaa !14
  ret void
}

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" }

!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, !11, i64 32}
!10 = !{!"Assembler", !7, i64 0, !11, i64 32, !6, i64 40, !11, i64 48, !11, i64 52}
!11 = !{!"int", !7, i64 0}
!12 = !{!10, !6, i64 40}
!13 = !{!10, !11, i64 48}
!14 = !{!10, !11, i64 52}


; 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"

%struct.Assembler = type { [4 x i64], i32, i64, i32, i32 }

@as = external dso_local local_unnamed_addr global %struct.Assembler, align 8

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write, argmem: none, inaccessiblemem: none) uwtable
define dso_local void @resetexp() local_unnamed_addr #0 {
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(36) @as, i8 0, i64 36, i1 false)
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) getelementptr inbounds (i8, ptr @as, i64 40), i8 0, i64 16, i1 false)
  ret void
}

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

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(write, argmem: none, 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" }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: write) }

!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: GlobalOptPass,InstCombinePass,MemCpyOptPass,PostOrderFunctionAttrsPass,TailCallElimPass