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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2021-06-07 18:01:55 +0100 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2021-06-08 10:41:03 +0100 |
| commit | 49d3a367c0376a95b9518e90426cdd6d5508e64a (patch) | |
| tree | 25b05aeaac5e030e6261ffb6fa6b9b557a062080 /llvm/lib/CodeGen/CommandFlags.cpp | |
| parent | 596004a94748e427ff59956e74d8ed4eb0e109d4 (diff) | |
| download | llvm-49d3a367c0376a95b9518e90426cdd6d5508e64a.zip llvm-49d3a367c0376a95b9518e90426cdd6d5508e64a.tar.gz llvm-49d3a367c0376a95b9518e90426cdd6d5508e64a.tar.bz2 | |
[CostModel][X86] Improve AVX1/AVX2 truncation costs
Based off the worse case numbers generated by D103695, we were overestimating the cost of a number of vector truncations:
AVX2: v2i32->v2i8, v2i64->v2i16 + v4i64->v4i32
AVX1: v2i32->v2i8, v4i64->v4i16 + v16i16->v16i8
Once we have a working set of conversion costs, the intention is to cleanup the tables and use legalized types a lot more to reduce the number of entries we currently have.
Diffstat (limited to 'llvm/lib/CodeGen/CommandFlags.cpp')
0 files changed, 0 insertions, 0 deletions