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Author SHA1 Message Date
Tim Northover 761bcdaf06 ARM: add extra test for addrmode folding. 
I was worried we might replace a mul with a mul+shift even if there were later
uses. Turns out to be unfounded but I'd just as well add an actual test for it.

llvm-svn: 302051
 2017-05-03 16:54:30 +00:00
Tim Northover 4a01ffbd6a ARM: avoid handing a deleted node back to TableGen during ISel. 
When we replaced the multiplicand the destination node might already exist.
When that happens the original gets CSEd and deleted. However, it's actually
used as the offset so nonsense is produced.

Should fix PR32726.

llvm-svn: 301983
 2017-05-02 22:45:19 +00:00