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Amara Emerson 779b9f5e51 [GlobalISel] Don't DCE LIFETIME_START/LIFETIME_END markers.
These are pseudos without any users, so DCE was killing them in the combiner.

Marking them as having side effects doesn't seem quite right since they don't.

Gives a nice 0.3% geomean size win on CTMark -Os.

Differential Revision: https://reviews.llvm.org/D98811
2021-03-17 18:02:08 -07:00
..
2020-12-08 11:54:39 +00:00
2021-02-15 14:27:12 +08:00
2021-01-13 10:57:49 +00:00
2020-12-08 10:28:26 +00:00

++ SVE CodeGen Warnings ++

When the WARN check lines fail in the SVE codegen tests it most likely means you
have introduced a warning due to:
1. Adding an invalid call to VectorType::getNumElements() or EVT::getVectorNumElements()
   when the type is a scalable vector.
2. Relying upon an implicit cast conversion from TypeSize to uint64_t.

For generic code, please modify your code to work with ElementCount and TypeSize directly.
For target-specific code that only deals with fixed-width vectors, use the fixed-size interfaces.
Please refer to the code where those functions live for more details.