--- dyld/dyld-1340/mach_o/LinkerOptimizationHints.cpp
+++ /dev/null
@@ -1,128 +0,0 @@
-/*
- * Copyright (c) 2022 Apple Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-
-#include "LinkerOptimizationHints.h"
-#include "Fixups.h"
-#include "Misc.h"
-
-namespace mach_o {
-
-//
-// MARK: --- LinkerOptimizationHints inspection methods ---
-//
-
-LinkerOptimizationHints::LinkerOptimizationHints(std::span<const uint8_t> buffer)
-    : _buffer(buffer)
-{
-}
-
-Error LinkerOptimizationHints::forEachLOH(void (^callback)(Kind kind, std::span<uint64_t> addrs, bool& stop)) const
-{
-    std::span<const uint8_t> currentBuffer = _buffer;
-    while ( !currentBuffer.empty() ) {
-        bool malformed = false;
-        uint64_t kind = read_uleb128(currentBuffer, malformed);
-
-        if ( kind == 0 ) // padding at end of loh buffer
-            break;
-
-        if ( kind == -1 ) {
-            // FIXME: How do we want to get warnings from mach_o?
-            //warning("malformed uleb128 kind in LC_LINKER_OPTIMIZATION_HINTS");
-            break;
-        }
-        uint64_t count = read_uleb128(currentBuffer, malformed);
-        if ( count == -1 ) {
-            //warning("malformed uleb128 count in LC_LINKER_OPTIMIZATION_HINTS");
-            break;
-        }
-
-        if ( count == 0 ) {
-            //warning("malformed uleb128 count in LC_LINKER_OPTIMIZATION_HINTS");
-            break;
-        }
-
-        uint64_t addrs[count];
-        for (int32_t i=0; i < count; ++i) {
-            addrs[i] = read_uleb128(currentBuffer, malformed);
-        }
-
-        if ( malformed )
-            return Error("malformed uleb128");
-
-        bool stop = false;
-        switch ( (Kind)kind ) {
-            case Kind::unknown:
-                // these are known kinds, so do the callback
-                callback((Kind)kind, { &addrs[0], (uint32_t)count }, stop);
-                break;
-            default:
-                // unknown kind, so skip this one
-                break;
-        }
-
-        if ( stop )
-            break;
-    }
-
-    return Error::none();
-}
-
-static Error validFPAC(const char* name, std::span<const uint64_t> addrs,
-                       std::span<const uint32_t> segmentContent, std::span<const uint32_t> expectedContent)
-{
-    if ( addrs.size() != 5 ) {
-        return Error("Expected %s LOH to be 5 instructions.  Got %d", name, (uint32_t)addrs.size());
-    }
-
-    // The addresses should all point to subsequent instructions for now.  If this chages
-    // we'll need to update the below checks too
-    uint64_t baseAddr = addrs[0];
-    for ( uint32_t i = 0; i != 5; ++i ) {
-        if ( addrs[i] != (baseAddr + (i * 4)) ) {
-            return Error("Expected %s addresses to be contiguous.  Got element[%d] at address %lld", name, i, addrs[i]);
-        }
-    }
-
-    // Make sure the LOH fits in the buffer
-    if ( segmentContent.size() < 5 ) {
-        return Error("not enough space in segment for %s LOH. Got %d bytes", name, (uint32_t)segmentContent.size() * 4);
-    }
-
-    // Check the instructions are the right encodings for the above sequence
-    for ( uint32_t i = 0; i != 5; ++i ) {
-        if ( expectedContent[i] != segmentContent[i] ) {
-            return Error("Mismatched %s content. Expected elt[%d] to be 0x%x, got 0x%x", name, i, expectedContent[i], segmentContent[i]);
-        }
-    }
-
-    return Error::none();
-}
-
-Error LinkerOptimizationHints::valid(std::span<const MappedSegment> segments, uint64_t loadAddress) const
-{
-
-    return std::move(lohErr);
-}
-
-} // namespace mach_o