; LLVM IR from lfarcaro/ARINC653_ARMV7A_AM335X :: Hardware (pruss)

; 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: nounwind uwtable
define dso_local void @PRUSSInit(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #2
  store volatile i32 0, ptr %3, align 4, !tbaa !5
  %4 = load volatile i32, ptr inttoptr (i64 1155533824 to ptr), align 4, !tbaa !5
  %5 = or i32 %4, 2
  store volatile i32 %5, ptr inttoptr (i64 1155533824 to ptr), align 4, !tbaa !5
  br label %6

6:                                                ; preds = %10, %1
  %7 = load volatile i32, ptr inttoptr (i64 1155533824 to ptr), align 4, !tbaa !5
  %8 = and i32 %7, 2
  %9 = icmp eq i32 %8, 0
  br i1 %9, label %10, label %11

10:                                               ; preds = %6
  br label %6, !llvm.loop !9

11:                                               ; preds = %6
  %12 = load volatile i32, ptr inttoptr (i64 1155533824 to ptr), align 4, !tbaa !5
  %13 = and i32 %12, -3
  store volatile i32 %13, ptr inttoptr (i64 1155533824 to ptr), align 4, !tbaa !5
  store volatile i32 2, ptr inttoptr (i64 1155530984 to ptr), align 4, !tbaa !5
  %14 = load i32, ptr %2, align 4, !tbaa !5
  %15 = or i32 16, %14
  store volatile i32 %15, ptr inttoptr (i64 1155531072 to ptr), align 4, !tbaa !5
  br label %16

16:                                               ; preds = %19, %11
  %17 = load volatile i32, ptr %3, align 4, !tbaa !5
  %18 = icmp slt i32 %17, 10000
  br i1 %18, label %19, label %22

19:                                               ; preds = %16
  %20 = load volatile i32, ptr %3, align 4, !tbaa !5
  %21 = add nsw i32 %20, 1
  store volatile i32 %21, ptr %3, align 4, !tbaa !5
  br label %16, !llvm.loop !11

22:                                               ; preds = %16
  store volatile i32 5, ptr inttoptr (i64 1244815364 to ptr), align 4, !tbaa !5
  br label %23

23:                                               ; preds = %27, %22
  %24 = load volatile i32, ptr inttoptr (i64 1244815364 to ptr), align 4, !tbaa !5
  %25 = and i32 %24, 32
  %26 = icmp ne i32 %25, 0
  br i1 %26, label %27, label %28

27:                                               ; preds = %23
  br label %23, !llvm.loop !12

28:                                               ; preds = %23
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #2
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


; 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 @PRUSSInit(i32 noundef %0) local_unnamed_addr #0 {
  %2 = alloca i32, align 4
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2)
  store volatile i32 0, ptr %2, align 4, !tbaa !5
  %3 = load volatile i32, ptr inttoptr (i64 1155533824 to ptr), align 1024, !tbaa !5
  %4 = or i32 %3, 2
  store volatile i32 %4, ptr inttoptr (i64 1155533824 to ptr), align 1024, !tbaa !5
  br label %5

5:                                                ; preds = %5, %1
  %6 = load volatile i32, ptr inttoptr (i64 1155533824 to ptr), align 1024, !tbaa !5
  %7 = and i32 %6, 2
  %8 = icmp eq i32 %7, 0
  br i1 %8, label %5, label %9, !llvm.loop !9

9:                                                ; preds = %5
  %10 = load volatile i32, ptr inttoptr (i64 1155533824 to ptr), align 1024, !tbaa !5
  %11 = and i32 %10, -3
  store volatile i32 %11, ptr inttoptr (i64 1155533824 to ptr), align 1024, !tbaa !5
  store volatile i32 2, ptr inttoptr (i64 1155530984 to ptr), align 8, !tbaa !5
  %12 = or i32 %0, 16
  store volatile i32 %12, ptr inttoptr (i64 1155531072 to ptr), align 64, !tbaa !5
  %.0..0..0..0.2 = load volatile i32, ptr %2, align 4, !tbaa !5
  %13 = icmp slt i32 %.0..0..0..0.2, 10000
  br i1 %13, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %9, %.lr.ph
  %.0..0..0..0.1 = load volatile i32, ptr %2, align 4, !tbaa !5
  %14 = add nsw i32 %.0..0..0..0.1, 1
  store volatile i32 %14, ptr %2, align 4, !tbaa !5
  %.0..0..0..0. = load volatile i32, ptr %2, align 4, !tbaa !5
  %15 = icmp slt i32 %.0..0..0..0., 10000
  br i1 %15, label %.lr.ph, label %._crit_edge, !llvm.loop !11

._crit_edge:                                      ; preds = %.lr.ph, %9
  store volatile i32 5, ptr inttoptr (i64 1244815364 to ptr), align 4, !tbaa !5
  br label %16

16:                                               ; preds = %16, %._crit_edge
  %17 = load volatile i32, ptr inttoptr (i64 1244815364 to ptr), align 4, !tbaa !5
  %18 = and i32 %17, 32
  %.not = icmp eq i32 %18, 0
  br i1 %.not, label %19, label %16, !llvm.loop !12

19:                                               ; preds = %16
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2)
  ret void
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

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" }
attributes #1 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }

!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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}
!12 = distinct !{!12, !10}


; Effective O3 passes: CorrelatedValuePropagationPass,GlobalOptPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass