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

; 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 i32 @MBsendMessage(i32 noundef %0, i32 noundef %1, i32 noundef %2) #0 {
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store i32 %0, ptr %5, align 4, !tbaa !5
  store i32 %1, ptr %6, align 4, !tbaa !5
  store i32 %2, ptr %7, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 1, ptr %8, align 4, !tbaa !5
  %10 = load i32, ptr %5, align 4, !tbaa !5
  %11 = load i32, ptr %6, align 4, !tbaa !5
  %12 = mul i32 %11, 4
  %13 = add i32 128, %12
  %14 = add i32 %10, %13
  %15 = zext i32 %14 to i64
  %16 = inttoptr i64 %15 to ptr
  %17 = load volatile i32, ptr %16, align 4, !tbaa !5
  %18 = load i32, ptr %8, align 4, !tbaa !5
  %19 = and i32 %17, %18
  %20 = load i32, ptr %8, align 4, !tbaa !5
  %21 = icmp ne i32 %19, %20
  br i1 %21, label %22, label %35

22:                                               ; preds = %3
  %23 = load i32, ptr %7, align 4, !tbaa !5
  %24 = load i32, ptr %5, align 4, !tbaa !5
  %25 = load i32, ptr %6, align 4, !tbaa !5
  %26 = mul i32 %25, 4
  %27 = add i32 64, %26
  %28 = add i32 %24, %27
  %29 = zext i32 %28 to i64
  %30 = inttoptr i64 %29 to ptr
  store volatile i32 %23, ptr %30, align 4, !tbaa !5
  %31 = load i32, ptr %8, align 4, !tbaa !5
  %32 = icmp ne i32 %31, 0
  %33 = xor i1 %32, true
  %34 = zext i1 %33 to i32
  store i32 %34, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %37

35:                                               ; preds = %3
  %36 = load i32, ptr %8, align 4, !tbaa !5
  store i32 %36, ptr %4, align 4
  store i32 1, ptr %9, align 4
  br label %37

37:                                               ; preds = %35, %22
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  %38 = load i32, ptr %4, align 4
  ret i32 %38
}

; 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"}


; 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 range(i32 0, 2) i32 @MBsendMessage(i32 noundef %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = shl i32 %1, 2
  %5 = add i32 %4, %0
  %6 = add i32 %5, 128
  %7 = zext i32 %6 to i64
  %8 = inttoptr i64 %7 to ptr
  %9 = load volatile i32, ptr %8, align 4, !tbaa !5
  %10 = and i32 %9, 1
  %.not.not = icmp eq i32 %10, 0
  br i1 %.not.not, label %11, label %15

11:                                               ; preds = %3
  %12 = add i32 %5, 64
  %13 = zext i32 %12 to i64
  %14 = inttoptr i64 %13 to ptr
  store volatile i32 %2, ptr %14, align 4, !tbaa !5
  br label %15

15:                                               ; preds = %3, %11
  %.0 = phi i32 [ 0, %11 ], [ 1, %3 ]
  ret i32 %.0
}

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"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass