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| author | Arnold Schwaighofer <aschwaighofer@apple.com> | 2013-03-14 19:17:02 +0000 |
|---|---|---|
| committer | Arnold Schwaighofer <aschwaighofer@apple.com> | 2013-03-14 19:17:02 +0000 |
| commit | d81511f0a671a9271d7ba10cce6c27331b57f553 (patch) | |
| tree | 776bf66db17ca79ca91b4e7b7ba8ae5bb29d4df0 /lib/Target/ARM/ARMFrameLowering.cpp | |
| parent | 042b79625f315da6378d06b5480b15894d6b06b1 (diff) | |
ARM cost model: Increase cost of some vector selects we do terrible on
By terrible I mean we store/load from the stack.
This matters on PAQp8 in _Z5trainPsS_ii (which is inlined into Mixer::update)
where we decide to vectorize a loop with a VF of 8 resulting in a 25%
degradation on a cortex-a8.
LV: Found an estimated cost of 2 for VF 8 For instruction: icmp slt i32
LV: Found an estimated cost of 2 for VF 8 For instruction: select i1, i32, i32
The bug that tracks the CodeGen part is PR14868.
radar://13403975
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177105 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/ARM/ARMFrameLowering.cpp')
0 files changed, 0 insertions, 0 deletions