; LLVM IR from af-jk/rtos :: src (interrupts)

; 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.SYSTICK_t = type { i32, i32, i32, i32 }

; Function Attrs: nounwind uwtable
define dso_local void @SYSTICK_Config() #0 {
  %1 = load volatile i32, ptr inttoptr (i64 3758153744 to ptr), align 4, !tbaa !5
  %2 = zext i32 %1 to i64
  %3 = and i64 %2, -2
  %4 = trunc i64 %3 to i32
  store volatile i32 %4, ptr inttoptr (i64 3758153744 to ptr), align 4, !tbaa !5
  %5 = load volatile i32, ptr inttoptr (i64 3758153744 to ptr), align 4, !tbaa !5
  %6 = zext i32 %5 to i64
  %7 = or i64 %6, 2
  %8 = trunc i64 %7 to i32
  store volatile i32 %8, ptr inttoptr (i64 3758153744 to ptr), align 4, !tbaa !5
  %9 = load volatile i32, ptr inttoptr (i64 3758153744 to ptr), align 4, !tbaa !5
  %10 = zext i32 %9 to i64
  %11 = or i64 %10, 4
  %12 = trunc i64 %11 to i32
  store volatile i32 %12, ptr inttoptr (i64 3758153744 to ptr), align 4, !tbaa !5
  %13 = load volatile i32, ptr getelementptr inbounds (%struct.SYSTICK_t, ptr inttoptr (i64 3758153744 to ptr), i32 0, i32 1), align 4, !tbaa !10
  %14 = zext i32 %13 to i64
  %15 = or i64 %14, 1599999
  %16 = trunc i64 %15 to i32
  store volatile i32 %16, ptr getelementptr inbounds (%struct.SYSTICK_t, ptr inttoptr (i64 3758153744 to ptr), i32 0, i32 1), align 4, !tbaa !10
  %17 = load volatile i32, ptr getelementptr inbounds (%struct.SYSTICK_t, ptr inttoptr (i64 3758153744 to ptr), i32 0, i32 2), align 4, !tbaa !11
  %18 = zext i32 %17 to i64
  %19 = and i64 %18, -16777216
  %20 = trunc i64 %19 to i32
  store volatile i32 %20, ptr getelementptr inbounds (%struct.SYSTICK_t, ptr inttoptr (i64 3758153744 to ptr), i32 0, i32 2), align 4, !tbaa !11
  %21 = load volatile i32, ptr inttoptr (i64 3758153744 to ptr), align 4, !tbaa !5
  %22 = zext i32 %21 to i64
  %23 = or i64 %22, 1
  %24 = trunc i64 %23 to i32
  store volatile i32 %24, ptr inttoptr (i64 3758153744 to ptr), align 4, !tbaa !5
  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, !7, i64 0}
!6 = !{!"", !7, i64 0, !7, i64 4, !7, i64 8, !7, i64 12}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 4}
!11 = !{!6, !7, i64 8}


; 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: nofree norecurse nounwind uwtable
define dso_local void @SYSTICK_Config() local_unnamed_addr #0 {
  %1 = load volatile i32, ptr inttoptr (i64 3758153744 to ptr), align 16, !tbaa !5
  %2 = and i32 %1, -2
  store volatile i32 %2, ptr inttoptr (i64 3758153744 to ptr), align 16, !tbaa !5
  %3 = load volatile i32, ptr inttoptr (i64 3758153744 to ptr), align 16, !tbaa !5
  %4 = or i32 %3, 2
  store volatile i32 %4, ptr inttoptr (i64 3758153744 to ptr), align 16, !tbaa !5
  %5 = load volatile i32, ptr inttoptr (i64 3758153744 to ptr), align 16, !tbaa !5
  %6 = or i32 %5, 4
  store volatile i32 %6, ptr inttoptr (i64 3758153744 to ptr), align 16, !tbaa !5
  %7 = load volatile i32, ptr inttoptr (i64 3758153748 to ptr), align 4, !tbaa !10
  %8 = or i32 %7, 1599999
  store volatile i32 %8, ptr inttoptr (i64 3758153748 to ptr), align 4, !tbaa !10
  %9 = load volatile i32, ptr inttoptr (i64 3758153752 to ptr), align 8, !tbaa !11
  %10 = and i32 %9, -16777216
  store volatile i32 %10, ptr inttoptr (i64 3758153752 to ptr), align 8, !tbaa !11
  %11 = load volatile i32, ptr inttoptr (i64 3758153744 to ptr), align 16, !tbaa !5
  %12 = or i32 %11, 1
  store volatile i32 %12, ptr inttoptr (i64 3758153744 to ptr), align 16, !tbaa !5
  ret void
}

attributes #0 = { nofree norecurse 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, !7, i64 0}
!6 = !{!"", !7, i64 0, !7, i64 4, !7, i64 8, !7, i64 12}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!6, !7, i64 4}
!11 = !{!6, !7, i64 8}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,InferAlignmentPass,InstCombinePass,PostOrderFunctionAttrsPass