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> We're interested in hearing about both performance improvements and regressions due to the new code generator.
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- support for vector (SSE/AVX) instructions \[**Geoffrey Mainland**\]
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- **Support for vector (SSE/AVX) instructions.** \[**Geoffrey Mainland**\] Support for SSE vector instructions, which permit 128-bit vectors, is now in HEAD. As part of this work, up to 6 arguments of type Double, Float, or vector can be passed in registers. Previously only 4 Float and 2 Double arguments could be passed in registers. AVX support will be added soon pending a refactoring of the code that implements vector primops.
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## Data Parallel Haskell
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