forked from OSchip/llvm-project
aa71bdd3af
The cost model should not assume vector casts get completely scalarized, since on targets that have vector support, the common case is a partial split up to the legal vector size. So, when a vector cast gets split, the resulting casts end up legal and cheap. Instead of pessimistically assuming scalarization, base TTI can use the costs the concrete TTI provides for the split vector, plus a fudge factor to account for the cost of the split itself. This fudge factor is currently 1 by default, except on AMDGPU where inserts and extracts are considered free. Differential Revision: http://reviews.llvm.org/D21251 llvm-svn: 274642 |
||
|---|---|---|
| .. | ||
| cast.ll | ||
| divrem.ll | ||
| gep.ll | ||
| insertelement.ll | ||
| lit.local.cfg | ||
| select.ll | ||
| shuffle.ll | ||