================
@@ -1901,9 +1903,8 @@ class SourceManager : public
RefCountedBase<SourceManager> {
FileID getFileID(SourceLocation::UIntTy SLocOffset) const {
// If our one-entry cache covers this offset, just return it.
- if (isOffsetInFileID(LastFileIDLookup, SLocOffset))
+ if (SLocOffset >= LastLookupStartOffset && SLocOffset <
LastLookupEndOffset)
----------------
erichkeane wrote:
Ow! That is sad. I guess 1927 says that `isOffsetInFileID` is a `very hot
method`, so that tells me that this check succeeds comparatively rarely in THAT
function. Makes me wonder how valuable it is HERE, though I guess with all the
work `slow` is doing, it matters...
https://github.com/llvm/llvm-project/pull/146782
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