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| author | Nate Begeman <natebegeman@mac.com> | 2006-03-11 02:20:46 +0000 |
|---|---|---|
| committer | Nate Begeman <natebegeman@mac.com> | 2006-03-11 02:20:46 +0000 |
| commit | 442b32b5c5f690bc9b49d67b3ec76008879bc4d9 (patch) | |
| tree | fe3e71fffa0ec5fb7290b29d95eb510178c63579 /docs | |
| parent | 78167faa18e66e95be3d73028b2db99bf3fbdcb3 (diff) | |
| download | external_llvm-442b32b5c5f690bc9b49d67b3ec76008879bc4d9.zip external_llvm-442b32b5c5f690bc9b49d67b3ec76008879bc4d9.tar.gz external_llvm-442b32b5c5f690bc9b49d67b3ec76008879bc4d9.tar.bz2 | |
Fix PR681 by using the standard Lengauer and Tarjan algorithm for dominator
set construction, rather than intersecting various std::sets. This reduces
the memory usage for the testcase in PR681 from 496 to 26MB of ram on my
darwin system, and reduces the runtime from 32.8 to 0.8 seconds on a
2.5GHz G5. This also enables future code sharing between Dom and PostDom
now that they share near-identical implementations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26707 91177308-0d34-0410-b5e6-96231b3b80d8
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