[lld] [LLD][COFF] Align EC code ranges to page boundaries (PR #168222)

[Jacek Caban via llvm-commits]

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@@ -946,7 +946,7 @@ void ECCodeMapChunk::writeTo(uint8_t *buf) const {
   auto table = reinterpret_cast<chpe_range_entry *>(buf);
   for (uint32_t i = 0; i < map.size(); i++) {
     const ECCodeMapEntry &entry = map[i];
-    uint32_t start = entry.first->getRVA();
+    uint32_t start = entry.first->getRVA() & ~0xfff;
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cjacek wrote:

Yes, we already use `0xfff` in several places in LLD, mostly, but not exclusively, in `Chunks.cpp`.

https://github.com/llvm/llvm-project/pull/168222