Matt Arsenault f44ed0919c Add target hook to allow merging stores of nonzero constants ...

On GPU targets, materializing constants is cheap and stores are
expensive, so only doing this for zero vectors was silly.

Most of the new testcases aren't optimally merged, and are for
later improvements.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238108 91177308-0d34-0410-b5e6-96231b3b80d8

2015-05-24 00:51:27 +00:00

533 KiB

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