Andrea Di Biagio
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106b79744b
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[X86] Add extra rules for combining vselect dag nodes into movsd.
This improves the fix committed at revision 199683 adding the
following new target specific combine rules:
1) fold (v4i32: vselect <0,0,-1,-1>, A, B) ->
(v4i32 (bitcast (movsd (v2i64 (bitcast A)), (v2i64 (bitcast B))) ))
2) fold (v4f32: vselect <0,0,-1,-1>, A, B) ->
(v4f32 (bitcast (movsd (v2f64 (bitcast A)), (v2f64 (bitcast B))) ))
3) fold (v4i32: vselect <-1,-1,0,0>, A, B) ->
(v4i32 (bitcast (movsd (v2i64 (bitcast B)), (v2i64 (bitcast A))) ))
4) fold (v4f32: vselect <-1,-1,0,0>, A, B) ->
(v4f32 (bitcast (movsd (v2i64 (bitcast B)), (v2i64 (bitcast A))) ))
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200324 91177308-0d34-0410-b5e6-96231b3b80d8
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2014-01-28 18:14:21 +00:00 |
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