[lld] [llvm] [LLD][COFF] Prefetch inputs early-on to improve link times (PR #169224)

[Hans Wennborg via llvm-commits]

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@@ -1023,6 +1023,32 @@ void mapped_file_region::unmapImpl() {
 
 void mapped_file_region::dontNeedImpl() {}
 
+void mapped_file_region::willNeedImpl() {
+#if (_WIN32_WINNT < _WIN32_WINNT_WIN8)
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zmodem wrote:

Since we're dlopen'ing and rolling our own function prototype anyway below, maybe we should just define this struct unconditionally (with a name that doesn't clash with the windows header)?

https://github.com/llvm/llvm-project/pull/169224