diff options
| author | Dean Michael Berris <dberris@google.com> | 2018-07-26 00:02:54 +0000 |
|---|---|---|
| committer | Dean Michael Berris <dberris@google.com> | 2018-07-26 00:02:54 +0000 |
| commit | 12c27f5b5398e4f7aca5bf1cea997365a2ab58d8 (patch) | |
| tree | 27a504396bad7d2ed2e4c76adaaf1b27c70e1e3c /tools | |
| parent | 327eaad5f0c74a1edc87eddc895ae20e05e9ccec (diff) | |
[MCA] Avoid an InstrDesc copy in mca::LSUnit::reserve.
Summary:
InstrDesc contains 4 vectors (as well as some other data), so it's
expensive to copy.
Authored By: orodley
Reviewers: andreadb, mattd, dberris
Reviewed By: mattd, dberris
Subscribers: dberris, gbedwell, llvm-commits
Differential Revision: https://reviews.llvm.org/D49775
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337985 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/llvm-mca/LSUnit.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/llvm-mca/LSUnit.cpp b/tools/llvm-mca/LSUnit.cpp index 4406e30a593..9ee3b617189 100644 --- a/tools/llvm-mca/LSUnit.cpp +++ b/tools/llvm-mca/LSUnit.cpp @@ -52,7 +52,7 @@ void LSUnit::assignSQSlot(unsigned Index) { } bool LSUnit::reserve(const InstRef &IR) { - const InstrDesc Desc = IR.getInstruction()->getDesc(); + const InstrDesc &Desc = IR.getInstruction()->getDesc(); unsigned MayLoad = Desc.MayLoad; unsigned MayStore = Desc.MayStore; unsigned IsMemBarrier = Desc.HasSideEffects; |