; LLVM IR from jgaeddert/liquid-dsp :: src/framing/src (bpacketsync)

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

; Function Attrs: nounwind uwtable
define dso_local i32 @bpacketsync_execute_byte(ptr noundef %0, i8 noundef zeroext %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca i8, align 1
  %5 = alloca i32, align 4
  %6 = alloca i8, align 1
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i8 %1, ptr %4, align 1, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 0, ptr %5, align 4, !tbaa !10
  br label %7

7:                                                ; preds = %22, %2
  %8 = load i32, ptr %5, align 4, !tbaa !10
  %9 = icmp ult i32 %8, 8
  br i1 %9, label %10, label %25

10:                                               ; preds = %7
  call void @llvm.lifetime.start.p0(i64 1, ptr %6) #2
  %11 = load i8, ptr %4, align 1, !tbaa !9
  %12 = zext i8 %11 to i32
  %13 = load i32, ptr %5, align 4, !tbaa !10
  %14 = sub i32 8, %13
  %15 = sub i32 %14, 1
  %16 = ashr i32 %12, %15
  %17 = and i32 %16, 1
  %18 = trunc i32 %17 to i8
  store i8 %18, ptr %6, align 1, !tbaa !9
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = load i8, ptr %6, align 1, !tbaa !9
  %21 = call i32 @bpacketsync_execute_bit(ptr noundef %19, i8 noundef zeroext %20)
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #2
  br label %22

22:                                               ; preds = %10
  %23 = load i32, ptr %5, align 4, !tbaa !10
  %24 = add i32 %23, 1
  store i32 %24, ptr %5, align 4, !tbaa !10
  br label %7, !llvm.loop !12

25:                                               ; preds = %7
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i32 0
}

; Function Attrs: nounwind uwtable
declare dso_local i32 @bpacketsync_execute_bit(ptr noundef, i8 noundef zeroext) #1

attributes #0 = { 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 = !{!"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 = !{!"int", !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; 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: nounwind uwtable
define dso_local noundef i32 @bpacketsync_execute_byte(ptr noundef %0, i8 noundef zeroext %1) local_unnamed_addr #0 {
  %3 = lshr i8 %1, 7
  %4 = tail call i32 @bpacketsync_execute_bit(ptr noundef %0, i8 noundef zeroext %3)
  %5 = lshr i8 %1, 6
  %6 = and i8 %5, 1
  %7 = tail call i32 @bpacketsync_execute_bit(ptr noundef %0, i8 noundef zeroext %6)
  %8 = lshr i8 %1, 5
  %9 = and i8 %8, 1
  %10 = tail call i32 @bpacketsync_execute_bit(ptr noundef %0, i8 noundef zeroext %9)
  %11 = lshr i8 %1, 4
  %12 = and i8 %11, 1
  %13 = tail call i32 @bpacketsync_execute_bit(ptr noundef %0, i8 noundef zeroext %12)
  %14 = lshr i8 %1, 3
  %15 = and i8 %14, 1
  %16 = tail call i32 @bpacketsync_execute_bit(ptr noundef %0, i8 noundef zeroext %15)
  %17 = lshr i8 %1, 2
  %18 = and i8 %17, 1
  %19 = tail call i32 @bpacketsync_execute_bit(ptr noundef %0, i8 noundef zeroext %18)
  %20 = lshr i8 %1, 1
  %21 = and i8 %20, 1
  %22 = tail call i32 @bpacketsync_execute_bit(ptr noundef %0, i8 noundef zeroext %21)
  %23 = and i8 %1, 1
  %24 = tail call i32 @bpacketsync_execute_bit(ptr noundef %0, i8 noundef zeroext %23)
  ret i32 0
}

; Function Attrs: nounwind uwtable
declare dso_local i32 @bpacketsync_execute_bit(ptr noundef, i8 noundef zeroext) local_unnamed_addr #0

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)"}


; Effective O3 passes: GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LICMPass,LoopRotatePass,PostOrderFunctionAttrsPass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass