[PATCH] D59256: [ARM] Disable LDM with offset for thumb2 cortex-m cpus

[Dave Green via Phabricator via llvm-commits]

dmgreen added a comment.

It may be possibly to create ldrd's, but I don't think that they will be any quicker. An ldrd will take the same time as an ldm (1+N). It could be smaller, depending on whether T1 ldr's are used.

>From a quick set of benchmarks I just ran, it looks like on average it did worse with ldrd's than ldr's. Perhaps because of less scheduling freedom?


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https://reviews.llvm.org/D59256