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author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-03-12 01:50:35 +0000 |
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committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-03-12 01:50:35 +0000 |
commit | dae1dc1f01b3869e76a4e70d09dd597dffac6959 (patch) | |
tree | bdb1a1bbea1215fc2292e5d79019b57918a07d41 /llvm/lib/MC/MCDisassembler/EDDisassembler.h | |
parent | 1beec45a618b4613b27ab0e78fdfc89f0b035398 (diff) | |
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That's it, I am declaring this a failure of the C++03 STL.
There are too many compatibility problems with using mixed types in
std::upper_bound, and I don't want to spend 110 lines of boilerplate setting up
a call to a 10-line function. Binary search is not /that/ hard to implement
correctly.
I tried terminating the binary search with a linear search, but that actually
made the algorithm slower against my expectation. Most live intervals have less
than 4 segments. The early test against endIndex() does pay, and this version is
25% faster than plain std::upper_bound().
llvm-svn: 127522
Diffstat (limited to 'llvm/lib/MC/MCDisassembler/EDDisassembler.h')
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