; LLVM IR from jgaeddert/liquid-dsp :: sandbox (reverse_byte_gentab)

; 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"

@.str = external hidden unnamed_addr constant [38 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [23 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [54 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local zeroext i8 @reverse_byte(i8 noundef zeroext) #0

; 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

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

8:                                                ; preds = %32, %0
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %10 = icmp ult i32 %9, 256
  br i1 %10, label %11, label %35

11:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 1, ptr %3) #3
  %12 = load i32, ptr %2, align 4, !tbaa !5
  %13 = trunc i32 %12 to i8
  %14 = call zeroext i8 @reverse_byte(i8 noundef zeroext %13)
  store i8 %14, ptr %3, align 1, !tbaa !9
  %15 = load i8, ptr %3, align 1, !tbaa !9
  %16 = zext i8 %15 to i32
  %17 = call i32 (ptr, ...) @printf(ptr noundef @.str.4, i32 noundef %16)
  %18 = load i32, ptr %2, align 4, !tbaa !5
  %19 = icmp ne i32 %18, 255
  br i1 %19, label %20, label %31

20:                                               ; preds = %11
  %21 = call i32 (ptr, ...) @printf(ptr noundef @.str.5)
  %22 = load i32, ptr %2, align 4, !tbaa !5
  %23 = add i32 %22, 1
  %24 = urem i32 %23, 8
  %25 = icmp eq i32 %24, 0
  br i1 %25, label %26, label %28

26:                                               ; preds = %20
  %27 = call i32 (ptr, ...) @printf(ptr noundef @.str.6)
  br label %30

28:                                               ; preds = %20
  %29 = call i32 (ptr, ...) @printf(ptr noundef @.str.7)
  br label %30

30:                                               ; preds = %28, %26
  br label %31

31:                                               ; preds = %30, %11
  call void @llvm.lifetime.end.p0(i64 1, ptr %3) #3
  br label %32

32:                                               ; preds = %31
  %33 = load i32, ptr %2, align 4, !tbaa !5
  %34 = add i32 %33, 1
  store i32 %34, ptr %2, align 4, !tbaa !5
  br label %8, !llvm.loop !10

35:                                               ; preds = %8
  %36 = call i32 (ptr, ...) @printf(ptr noundef @.str.8)
  call void @llvm.lifetime.end.p0(i64 4, ptr %2) #3
  ret i32 0
}

declare i32 @printf(ptr noundef, ...) #2

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

@.str = external hidden unnamed_addr constant [38 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.2 = external hidden unnamed_addr constant [23 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [54 x i8], align 1
@.str.4 = external hidden unnamed_addr constant [7 x i8], align 1
@.str.5 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.6 = external hidden unnamed_addr constant [6 x i8], align 1
@.str.7 = external hidden unnamed_addr constant [2 x i8], align 1
@.str.8 = external hidden unnamed_addr constant [5 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local zeroext i8 @reverse_byte(i8 noundef zeroext) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  %2 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  %3 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.2)
  %4 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.3)
  br label %5

5:                                                ; preds = %0, %10
  %.06 = phi i32 [ 0, %0 ], [ %12, %10 ]
  %6 = trunc nuw i32 %.06 to i8
  %7 = tail call zeroext i8 @reverse_byte(i8 noundef zeroext %6)
  %8 = zext i8 %7 to i32
  %9 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.4, i32 noundef %8)
  %.not = icmp eq i32 %.06, 255
  br i1 %.not, label %.thread, label %10

10:                                               ; preds = %5
  %11 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.5)
  %12 = add nuw nsw i32 %.06, 1
  %13 = and i32 %12, 7
  %14 = icmp eq i32 %13, 0
  %.str.6..str.7 = select i1 %14, ptr @.str.6, ptr @.str.7
  %15 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) %.str.6..str.7)
  %exitcond.not = icmp eq i32 %12, 256
  br i1 %exitcond.not, label %.thread, label %5, !llvm.loop !5

.thread:                                          ; preds = %5, %10
  %16 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.8)
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #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 = { nofree nounwind "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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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