; LLVM IR from IOsonata/IOsonata :: ARM/Nordic/nRF52/nRF52840/exemples/BoschAppBoard/src (bmi3)

; 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

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

; Function Attrs: nounwind uwtable
declare dso_local signext i8 @bmi3_get_regs(i8 noundef zeroext, ptr noundef, i16 noundef zeroext, ptr noundef) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local signext i8 @bmi3_get_fifo_wm(ptr noundef %0, ptr noundef %1) #2 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i8, align 1
  %6 = alloca [2 x i8], align 1
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 1, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 2, ptr %6) #3
  call void @llvm.memset.p0.i64(ptr align 1 %6, i8 0, i64 2, i1 false)
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = icmp ne ptr %7, null
  br i1 %8, label %9, label %29

9:                                                ; preds = %2
  %10 = getelementptr inbounds [2 x i8], ptr %6, i64 0, i64 0
  %11 = load ptr, ptr %4, align 8, !tbaa !5
  %12 = call signext i8 @bmi3_get_regs(i8 noundef zeroext 53, ptr noundef %10, i16 noundef zeroext 2, ptr noundef %11)
  store i8 %12, ptr %5, align 1, !tbaa !9
  %13 = load i8, ptr %5, align 1, !tbaa !9
  %14 = sext i8 %13 to i32
  %15 = icmp eq i32 %14, 0
  br i1 %15, label %16, label %28

16:                                               ; preds = %9
  %17 = getelementptr inbounds [2 x i8], ptr %6, i64 0, i64 0
  %18 = load i8, ptr %17, align 1, !tbaa !9
  %19 = zext i8 %18 to i32
  %20 = getelementptr inbounds [2 x i8], ptr %6, i64 0, i64 1
  %21 = load i8, ptr %20, align 1, !tbaa !9
  %22 = zext i8 %21 to i16
  %23 = zext i16 %22 to i32
  %24 = shl i32 %23, 8
  %25 = or i32 %19, %24
  %26 = trunc i32 %25 to i16
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  store i16 %26, ptr %27, align 2, !tbaa !10
  br label %28

28:                                               ; preds = %16, %9
  br label %30

29:                                               ; preds = %2
  store i8 -1, ptr %5, align 1, !tbaa !9
  br label %30

30:                                               ; preds = %29, %28
  %31 = load i8, ptr %5, align 1, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 2, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 1, ptr %5) #3
  ret i8 %31
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #2 = { 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 #3 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = !{!11, !11, i64 0}
!11 = !{!"short", !7, i64 0}


; 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: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
declare dso_local signext i8 @bmi3_get_regs(i8 noundef zeroext, ptr noundef, i16 noundef zeroext, ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local signext i8 @bmi3_get_fifo_wm(ptr noundef writeonly %0, ptr noundef %1) local_unnamed_addr #1 {
  %3 = alloca [2 x i8], align 2
  call void @llvm.lifetime.start.p0(i64 2, ptr nonnull %3) #2
  store i16 0, ptr %3, align 2
  %.not = icmp eq ptr %0, null
  br i1 %.not, label %9, label %4

4:                                                ; preds = %2
  %5 = call signext i8 @bmi3_get_regs(i8 noundef zeroext 53, ptr noundef nonnull %3, i16 noundef zeroext 2, ptr noundef %1)
  %6 = icmp eq i8 %5, 0
  br i1 %6, label %7, label %9

7:                                                ; preds = %4
  %8 = load i16, ptr %3, align 2
  store i16 %8, ptr %0, align 2, !tbaa !5
  br label %9

9:                                                ; preds = %2, %4, %7
  %.0 = phi i8 [ 0, %7 ], [ %5, %4 ], [ -1, %2 ]
  call void @llvm.lifetime.end.p0(i64 2, ptr nonnull %3) #2
  ret i8 %.0
}

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #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 = !{!"short", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: AggressiveInstCombinePass,CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass