3 Commits

Author	SHA1	Message	Date
Sam Parker	42dcf56122	[ARM][ParallelDSP] Disable for big-endian ... Bail early when we don't have a preheader and also if the target is big endian because it's written with only little endian in mind! Differential Revision: https://reviews.llvm.org/D59368 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@356243 91177308-0d34-0410-b5e6-96231b3b80d8	2019-03-15 10:19:32 +00:00
Sam Parker	acbed856d2	[NFC][ARM] Update test ... Change some regex to handle commutable instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@356159 91177308-0d34-0410-b5e6-96231b3b80d8	2019-03-14 15:36:54 +00:00
Sam Parker	571398105e	[ARM][ParallelDSP] Enable multiple uses of loads ... When choosing whether a pair of loads can be combined into a single wide load, we check that the load only has a sext user and that sext also only has one user. But this can prevent the transformation in the cases when parallel macs use the same loaded data multiple times. To enable this, we need to fix up any other uses after creating the wide load: generating a trunc and a shift + trunc pair to recreate the narrow values. We also need to keep a record of which loads have already been widened. Differential Revision: https://reviews.llvm.org/D59215 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@356132 91177308-0d34-0410-b5e6-96231b3b80d8	2019-03-14 11:14:13 +00:00