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

; 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 @HSMMCSDModuleClkConfig(i8 noundef zeroext %0) #0 {
  %2 = alloca i8, align 1
  store i8 %0, ptr %2, align 1, !tbaa !5
  %3 = load i8, ptr %2, align 1, !tbaa !5
  %4 = zext i8 %3 to i32
  %5 = icmp eq i32 %4, 0
  br i1 %5, label %6, label %15

6:                                                ; preds = %1
  %7 = load volatile i32, ptr inttoptr (i64 1155530812 to ptr), align 4, !tbaa !8
  %8 = or i32 %7, 2
  store volatile i32 %8, ptr inttoptr (i64 1155530812 to ptr), align 4, !tbaa !8
  br label %9

9:                                                ; preds = %13, %6
  %10 = load volatile i32, ptr inttoptr (i64 1155530812 to ptr), align 4, !tbaa !8
  %11 = and i32 %10, 3
  %12 = icmp ne i32 %11, 2
  br i1 %12, label %13, label %14

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

14:                                               ; preds = %9
  br label %24

15:                                               ; preds = %1
  %16 = load volatile i32, ptr inttoptr (i64 1155530996 to ptr), align 4, !tbaa !8
  %17 = or i32 %16, 2
  store volatile i32 %17, ptr inttoptr (i64 1155530996 to ptr), align 4, !tbaa !8
  br label %18

18:                                               ; preds = %22, %15
  %19 = load volatile i32, ptr inttoptr (i64 1155530996 to ptr), align 4, !tbaa !8
  %20 = and i32 %19, 3
  %21 = icmp ne i32 %20, 2
  br i1 %21, label %22, label %23

22:                                               ; preds = %18
  br label %18, !llvm.loop !12

23:                                               ; preds = %18
  br label %24

24:                                               ; preds = %23, %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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = !{!9, !9, i64 0}
!9 = !{!"int", !6, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}
!12 = distinct !{!12, !11}


; 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 @HSMMCSDModuleClkConfig(i8 noundef zeroext %0) local_unnamed_addr #0 {
  %2 = icmp eq i8 %0, 0
  br i1 %2, label %3, label %9

3:                                                ; preds = %1
  %4 = load volatile i32, ptr inttoptr (i64 1155530812 to ptr), align 4, !tbaa !5
  %5 = or i32 %4, 2
  store volatile i32 %5, ptr inttoptr (i64 1155530812 to ptr), align 4, !tbaa !5
  br label %6

6:                                                ; preds = %6, %3
  %7 = load volatile i32, ptr inttoptr (i64 1155530812 to ptr), align 4, !tbaa !5
  %8 = and i32 %7, 3
  %.not1 = icmp eq i32 %8, 2
  br i1 %.not1, label %.loopexit, label %6, !llvm.loop !9

9:                                                ; preds = %1
  %10 = load volatile i32, ptr inttoptr (i64 1155530996 to ptr), align 4, !tbaa !5
  %11 = or i32 %10, 2
  store volatile i32 %11, ptr inttoptr (i64 1155530996 to ptr), align 4, !tbaa !5
  br label %12

12:                                               ; preds = %12, %9
  %13 = load volatile i32, ptr inttoptr (i64 1155530996 to ptr), align 4, !tbaa !5
  %14 = and i32 %13, 3
  %.not = icmp eq i32 %14, 2
  br i1 %.not, label %.loopexit, label %12, !llvm.loop !11

.loopexit:                                        ; preds = %12, %6
  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, !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}


; Effective O3 passes: GlobalOptPass,InstCombinePass,JumpThreadingPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass