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Author SHA1 Message Date
Nadav Rotem 7b3120b9ae On Sandybridge split unaligned 256bit stores into two xmm-sized stores. 
llvm-svn: 172894
 2013-01-19 08:38:41 +00:00
Nadav Rotem b5ce6ee835 On AVX, we can load v8i32 at a time. The bug happens when two uneven loads are used. 
When we load the v12i32 type, the GenWidenVectorLoads method generates two loads: v8i32 and v4i32 
and attempts to use CONCAT_VECTORS to join them. In this fix I concat undef values to widen 
the smaller value. The test "widen_load-2.ll" also exposes this bug on AVX.

llvm-svn: 147964
 2012-01-11 20:19:17 +00:00