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| author | Chris Lattner <sabre@nondot.org> | 2006-08-12 05:25:00 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2006-08-12 05:25:00 +0000 |
| commit | 3bb4657488f700bbe3376fb547017163b8fbbd8f (patch) | |
| tree | a51a9027d50d206977fcc0b48b256caf3bb424f5 /tools/llvm2cpp/llvm2cpp.cpp | |
| parent | 9289b637a4f3e27177ef91fe8592bae201d561bf (diff) | |
Don't attempt to split subloops out of a loop with a huge number of backedges.
Not only will this take huge amounts of compile time, the resultant loop nests
won't be useful for optimization. This reduces loopsimplify time on
Transforms/LoopSimplify/2006-08-11-LoopSimplifyLongTime.ll from ~32s to ~0.4s
with a debug build of llvm on a 2.7Ghz G5.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29647 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/llvm2cpp/llvm2cpp.cpp')
0 files changed, 0 insertions, 0 deletions