Amara Emerson bf43004ff1 [AArch64][GlobalISel] Fix the G_EXTLOAD combiner creating non-extending illegal instructions. ...

This fixes loads like 's1 = load %p (load 1 from %p)' being combined with an
extend into an illegal 's8 = g_extload %p (load 1 from %p)' which doesn't do any
extension, by avoiding touching those < s8 size loads.

This bug was uncovered by a verifier update r351584, which I reverted it to keep
the bots green.

llvm-svn: 352311

2019-01-27 10:56:20 +00:00

14 KiB

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