Commit message (Collapse) | Author | Age | Files | Lines | |
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* | [NVPTX] declare no vector registers | Jingyue Wu | 2015-07-10 | 1 | -0/+39 |
Summary: Without this patch, LoopVectorizer in certain cases (see loop-vectorize.ll) produces code with complex control flow which hurts later optimizations. Since NVPTX doesn't have vector registers in LLVM's sense (NVPTXTTI::getRegisterBitWidth(true) == 32), we for now declare no vector registers to effectively disable loop vectorization. Reviewers: jholewinski Subscribers: jingyue, llvm-commits, jholewinski Differential Revision: http://reviews.llvm.org/D11089 llvm-svn: 241884 |