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| author | Arnold Schwaighofer <aschwaighofer@apple.com> | 2014-02-02 03:12:34 +0000 |
|---|---|---|
| committer | Arnold Schwaighofer <aschwaighofer@apple.com> | 2014-02-02 03:12:34 +0000 |
| commit | a16c1b55e2aac49c7336f3f54b50bbe85335712e (patch) | |
| tree | 2cc6f130fcbdbcba7aa30ad45315a1e519c954a7 /lib | |
| parent | 1bdadf38ef3273b40c2f7f253157a09a975f08a3 (diff) | |
| download | llvm-a16c1b55e2aac49c7336f3f54b50bbe85335712e.tar.gz llvm-a16c1b55e2aac49c7336f3f54b50bbe85335712e.tar.bz2 llvm-a16c1b55e2aac49c7336f3f54b50bbe85335712e.tar.xz | |
LoopVectorizer: Enable unrolling of conditional stores and the load/store
unrolling heuristic per default
Benchmarking on x86_64 (thanks Chandler!) and ARM has shown those options speed
up some benchmarks while not causing any interesting regressions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200621 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Transforms/Vectorize/LoopVectorize.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/Transforms/Vectorize/LoopVectorize.cpp b/lib/Transforms/Vectorize/LoopVectorize.cpp index 1f494922b3..930cf7799a 100644 --- a/lib/Transforms/Vectorize/LoopVectorize.cpp +++ b/lib/Transforms/Vectorize/LoopVectorize.cpp @@ -180,16 +180,16 @@ static cl::opt<bool> LoopVectorizeWithBlockFrequency( // Runtime unroll loops for load/store throughput. static cl::opt<bool> EnableLoadStoreRuntimeUnroll( - "enable-loadstore-runtime-unroll", cl::init(false), cl::Hidden, + "enable-loadstore-runtime-unroll", cl::init(true), cl::Hidden, cl::desc("Enable runtime unrolling until load/store ports are saturated")); /// The number of stores in a loop that are allowed to need predication. static cl::opt<unsigned> NumberOfStoresToPredicate( - "vectorize-num-stores-pred", cl::init(0), cl::Hidden, + "vectorize-num-stores-pred", cl::init(1), cl::Hidden, cl::desc("Max number of stores to be predicated behind an if.")); static cl::opt<bool> EnableIndVarRegisterHeur( - "enable-ind-var-reg-heur", cl::init(false), cl::Hidden, + "enable-ind-var-reg-heur", cl::init(true), cl::Hidden, cl::desc("Count the induction variable only once when unrolling")); static cl::opt<bool> EnableCondStoresVectorization( |