Merging r281403:

Merging r281403:
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r281403 | chfast | 2016-09-13 23:55:41 +0200 (wto, 13 wrz 2016) | 9 lines

[CodeGen] Fix invalid shift in mul expansion

Summary: When expanding mul in type legalization make sure the type for
shift amount can actually fit the value.
This fixes PR30354 https://llvm.org/bugs/show_bug.cgi?id=30354.

Reviewers: hfinkel, majnemer, RKSimon

Subscribers: RKSimon, llvm-commits

Differential Revision: https://reviews.llvm.org/D24478

git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_39@288085 91177308-0d34-0410-b5e6-96231b3b80d8