2 Commits

Author	SHA1	Message	Date
Chris Lattner	8cb4abbc0e	fix the buildvector->insertp[sd] logic to not always create a redundant ... insertp[sd] $0, which is a noop. Before: _f32: ## @f32 pshufd $1, %xmm1, %xmm2 pshufd $1, %xmm0, %xmm3 addss %xmm2, %xmm3 addss %xmm1, %xmm0 ## kill: XMM0<def> XMM0<kill> XMM0<def> insertps $0, %xmm0, %xmm0 insertps $16, %xmm3, %xmm0 ret after: _f32: ## @f32 movdqa %xmm0, %xmm2 addss %xmm1, %xmm2 pshufd $1, %xmm1, %xmm1 pshufd $1, %xmm0, %xmm3 addss %xmm1, %xmm3 movdqa %xmm2, %xmm0 insertps $16, %xmm3, %xmm0 ret The extra movs are due to a random (poor) scheduling decision. llvm-svn: 112379	2010-08-28 17:59:08 +00:00
Nate Begeman	820b07ed10	BUILD_VECTOR was missing out on some prime opportunities to use SSE 4.1 inserts. ... llvm-svn: 99423	2010-03-24 20:49:50 +00:00