Richard Sandiford 109a7c6ff1 [SystemZ] Improve extload handling ...

The port originally had special patterns for extload, mapping them to the
same instructions as sextload.  It seemed neater to have patterns that
match "an extension that is allowed to be signed" and "an extension that
is allowed to be unsigned".

This was originally meant to be a clean-up, but it does improve the handling
of promoted integers a little, as shown by args-06.ll.

llvm-svn: 190777

2013-09-16 09:03:10 +00:00

1.8 KiB

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