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| author | Andrew Trick <atrick@apple.com> | 2011-08-10 00:28:10 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2011-08-10 00:28:10 +0000 |
| commit | b1eede12818d91a32adac928c6fffcf6d2800dc0 (patch) | |
| tree | 4070b1152a0888c9b929e2e6779b19063e6e371f /include/llvm/Analysis/LoopInfo.h | |
| parent | 33e57515b173baf572398fafeffcf4644c2a7381 (diff) | |
| download | external_llvm-b1eede12818d91a32adac928c6fffcf6d2800dc0.zip external_llvm-b1eede12818d91a32adac928c6fffcf6d2800dc0.tar.gz external_llvm-b1eede12818d91a32adac928c6fffcf6d2800dc0.tar.bz2 | |
Fix the LoopUnroller to handle nontrivial loops and partial unrolling.
These are not individual bug fixes. I had to rewrite a good chunk of
the unroller to make it sane. I think it was getting lucky on trivial
completely unrolled loops with no early exits. I included some fairly
simple unit tests for partial unrolling. I didn't do much stress
testing, so it may not be perfect, but should be usable now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137190 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Analysis/LoopInfo.h')
| -rw-r--r-- | include/llvm/Analysis/LoopInfo.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/llvm/Analysis/LoopInfo.h b/include/llvm/Analysis/LoopInfo.h index 28a15ed..48c59ac 100644 --- a/include/llvm/Analysis/LoopInfo.h +++ b/include/llvm/Analysis/LoopInfo.h @@ -134,6 +134,11 @@ public: block_iterator block_begin() const { return Blocks.begin(); } block_iterator block_end() const { return Blocks.end(); } + /// getNumBlocks - Get the number of blocks in this loop. + unsigned getNumBlocks() const { + return std::distance(block_begin(), block_end()); + } + /// isLoopExiting - True if terminator in the block can branch to another /// block that is outside of the current loop. /// |