[RISCV] Add Zba command line to rv64i-exhaustive-w-insts.ll

Zba adds a zext.w pseudoinstruction using ADDUW. This can simplify
the generated code for many of these tests.

There are at least 2 suboptimal cases in this config that I've marked
with TODOs.
This commit is contained in:
Craig Topper
2021-09-02 08:26:39 -07:00
parent eaa560582a
commit 498e8ae412

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