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Author SHA1 Message Date
Juergen Ributzka
40017084f7 [FastISel][AArch64] Fix sign-/zero-extend folding when SelectionDAG is involved.
Sign-/zero-extend folding depended on the load and the integer extend to be
both selected by FastISel. This cannot always be garantueed and SelectionDAG
might interfer. This commit adds additonal checks to load and integer extend
lowering to catch this.

Related to rdar://problem/18495928.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219716 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-14 20:36:02 +00:00