Dan Gohman 488fbfc69e Make SimplifyDemandedVectorElts simplify vectors with multiple ...

users, and teach it about shufflevector instructions.

Also, fix a subtle bug in SimplifyDemandedVectorElts'
insertelement code.

This is a patch that was originally written by Eli Friedman,
with some fixes and cleanup by me.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55995 91177308-0d34-0410-b5e6-96231b3b80d8

2008-09-09 18:11:14 +00:00

473 KiB

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