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8b9e31c6e2
This improves the X86 cost model for small constants with large types. Before this commit we would even hoist trivial constants such as i96 2. This is related to <rdar://problem/17070936> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210504 91177308-0d34-0410-b5e6-96231b3b80d8
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