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Author SHA1 Message Date
Rafael Espindola ae6000e86d Replace more uses of sse41 with sse4.1. 
llc using the host cpu features and *waning* on unknown features is probably
not a good thing :-(

llvm-svn: 189144
 2013-08-23 20:39:19 +00:00
Chris Lattner 94656b1c8c 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 583e05d8ce 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