060be733a5
SLP Vectorizer: Add support for trees with external users.
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To support this we have to insert 'extractelement' instructions to pick the right lane.
We had this functionality before but I removed it when we moved to the multi-block design because it was too complicated.
llvm-svn: 185230
2013-06-28 22:07:09 +00:00
4c5b2d1de6
Erase all of the instructions that we RAUWed
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llvm-svn: 184969
2013-06-26 17:16:09 +00:00
f4ca3994b8
Do not add cse-ed instructions into the visited map because we dont want to consider them as a candidate for replacement of instructions to be visited.
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llvm-svn: 184966
2013-06-26 16:54:53 +00:00
0323925d51
SLP Vectorizer: Fix a bug in the code that does CSE on the generated gather sequences.
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Make sure that we don't replace and RAUW two sequences if one does not dominate the other.
llvm-svn: 184674
2013-06-23 21:57:27 +00:00
eb65e67eea
SLP Vectorizer: Implement a simple CSE optimization for the gather sequences.
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llvm-svn: 184660
2013-06-23 06:15:46 +00:00
Nadav Rotem