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| author | Arnold Schwaighofer <aschwaighofer@apple.com> | 2013-02-04 02:52:05 +0000 |
|---|---|---|
| committer | Arnold Schwaighofer <aschwaighofer@apple.com> | 2013-02-04 02:52:05 +0000 |
| commit | a7ad84851b018602487779d97195bad0536f9a7a (patch) | |
| tree | 3c0839201b04eeff17851e5ff8baab233f86f7d1 /include/llvm/Support/MathExtras.h | |
| parent | 4b5dbaa96a6e51e925ac017468538754aad8e5cc (diff) | |
| download | external_llvm-a7ad84851b018602487779d97195bad0536f9a7a.tar.gz external_llvm-a7ad84851b018602487779d97195bad0536f9a7a.tar.bz2 external_llvm-a7ad84851b018602487779d97195bad0536f9a7a.zip | |
ARM cost model: Penalize insertelement into D subregisters
Swift has a renaming dependency if we load into D subregisters. We don't have a
way of distinguishing between insertelement operations of values from loads and
other values. Therefore, we are pessimistic for now (The performance problem
showed up in example 14 of gcc-loops).
radar://13096933
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174300 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Support/MathExtras.h')
0 files changed, 0 insertions, 0 deletions