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Author SHA1 Message Date
Simon Pilgrim e633741c3a [SLPVectorizer][X86] Tests to show missed buildvector sitofp/fptosi vectorizations 
e.g.
buildvector(sitofp(i32), sitofp(i32), sitofp(i32), sitofp(i32)) --> sitofp(buildvector(i32, i32, i32, i32))

llvm-svn: 288807
 2016-12-06 13:29:55 +00:00
Simon Pilgrim 4ddc92b6cd [X86][SSE] Add lowering to cvttpd2dq/cvttps2dq for sitofp v2f64/2f32 to 2i32 
As discussed on PR28461 we currently miss the chance to lower "fptosi <2 x double> %arg to <2 x i32>" to cvttpd2dq due to its use of illegal types.

This patch adds support for fptosi to 2i32 from both 2f64 and 2f32.

It also recognises that cvttpd2dq zeroes the upper 64-bits of the xmm result (similar to D23797) - we still don't do this for the cvttpd2dq/cvttps2dq intrinsics - this can be done in a future patch.

Differential Revision: https://reviews.llvm.org/D23808

llvm-svn: 284459
 2016-10-18 07:42:15 +00:00
Simon Pilgrim 04e249b128 [SLPVectorizer][X86] Added fptosi/fptoui tests 
llvm-svn: 283048
 2016-10-01 19:35:59 +00:00