5 Commits

Author	SHA1	Message	Date
Nadav Rotem	82609df647	AVX2: Build splat vectors by broadcasting a scalar from the constant pool. ... Previously we used three instructions to broadcast an immediate value into a vector register. On Sandybridge we continue to load the broadcasted value from the constant pool. llvm-svn: 154284	2012-04-08 12:54:54 +00:00
Craig Topper	430f3f1bd6	Fix a crash in AVX2 when trying to broadcast a double into a 128-bit vector. There is no vbroadcastsd xmm, but we do need to support 64-bit integers broadcasted into xmm. Also factor the AVX check into the isVectorBroadcast function. This makes more sense since the AVX2 check was already inside. ... llvm-svn: 147844	2012-01-10 08:23:59 +00:00
Nadav Rotem	37010002f2	AVX: Add support for vbroadcast from BUILD_VECTOR and refactor some of the vbroadcast code. ... llvm-svn: 144720	2011-11-15 22:50:37 +00:00
Bruno Cardoso Lopes	f61d1c072e	Fix vbroadcast matching logic to early unmatch if the node doesn't have ... only one use. Fix PR10825. llvm-svn: 138951	2011-09-01 18:15:06 +00:00
Bruno Cardoso Lopes	be5e987379	Introduce matching patterns for vbroadcast AVX instruction. The idea is to ... match splats in the form (splat (scalar_to_vector (load ...))) whenever the load can be folded. All the logic and instruction emission is working but because of PR8156, there are no ways to match loads, cause they can never be folded for splats. Thus, the tests are XFAILed, but I've tested and exercised all the logic using a relaxed version for checking the foldable loads, as if the bug was already fixed. This should work out of the box once PR8156 gets fixed since MayFoldLoad will work as expected. llvm-svn: 137810	2011-08-17 02:29:19 +00:00