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| author | Pete Cooper <peter_cooper@apple.com> | 2011-12-22 02:13:25 +0000 |
|---|---|---|
| committer | Pete Cooper <peter_cooper@apple.com> | 2011-12-22 02:13:25 +0000 |
| commit | 3cfecf5cc2279cbbcdd497f2898161e40e690c86 (patch) | |
| tree | f7d93e8d5e1ca508b891382c322610860433bc71 /lib/CodeGen/MachineLICM.cpp | |
| parent | dcc557f1463107d0f2f6b0099c99593b8fce4e36 (diff) | |
| download | external_llvm-3cfecf5cc2279cbbcdd497f2898161e40e690c86.zip external_llvm-3cfecf5cc2279cbbcdd497f2898161e40e690c86.tar.gz external_llvm-3cfecf5cc2279cbbcdd497f2898161e40e690c86.tar.bz2 | |
Hoisted some loop invariant smallvector lookups out of a MachineLICM loop
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147127 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/MachineLICM.cpp')
| -rw-r--r-- | lib/CodeGen/MachineLICM.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/CodeGen/MachineLICM.cpp b/lib/CodeGen/MachineLICM.cpp index 3a82700..6854838 100644 --- a/lib/CodeGen/MachineLICM.cpp +++ b/lib/CodeGen/MachineLICM.cpp @@ -1036,9 +1036,11 @@ bool MachineLICM::CanCauseHighRegPressure(DenseMap<unsigned, int> &Cost) { continue; unsigned RCId = CI->first; + unsigned Limit = RegLimit[RCId]; + int Cost = CI->second; for (unsigned i = BackTrace.size(); i != 0; --i) { SmallVector<unsigned, 8> &RP = BackTrace[i-1]; - if (RP[RCId] + CI->second >= RegLimit[RCId]) + if (RP[RCId] + Cost >= Limit) return true; } } |