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...ster allocator constructor. It might as well register a function that allocates AND configures PBQP properly then. There is no need for a target hook. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20100908/ab989fb8/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 1929 bytes Desc: not available URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20100908/ab989fb8/attachment.bin>

Hi Carlos, Jakob, The PBQP allocator was designed to support a very wide range of constraints, and can handle something like this easily. Say you have 4 of these orX/irX registers, then for any pair of virtual registers used in such an add instruction you would add the following constraint matrix to the PBQP instance: [ 0 inf inf inf ] [ inf 0 inf inf ] [ inf inf 0 inf ] [ inf inf inf 0