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| author | Andrew Trick <atrick@apple.com> | 2012-10-10 05:43:16 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2012-10-10 05:43:16 +0000 |
| commit | 85c7b6108f8c8cea77d0bce30343f736f6c15981 (patch) | |
| tree | 3d375096ce1bfac49bdae4a8c629d55d58a2d0ac /include/llvm/MC | |
| parent | dbe6d43dfac78d567973dac8fc2a0190dad5135f (diff) | |
| download | llvm-85c7b6108f8c8cea77d0bce30343f736f6c15981.tar.gz llvm-85c7b6108f8c8cea77d0bce30343f736f6c15981.tar.bz2 llvm-85c7b6108f8c8cea77d0bce30343f736f6c15981.tar.xz | |
TODO comment
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165605 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/MC')
| -rw-r--r-- | include/llvm/MC/MCSubtargetInfo.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/llvm/MC/MCSubtargetInfo.h b/include/llvm/MC/MCSubtargetInfo.h index 451f435fe3..69213cd77d 100644 --- a/include/llvm/MC/MCSubtargetInfo.h +++ b/include/llvm/MC/MCSubtargetInfo.h @@ -109,6 +109,9 @@ public: int getReadAdvanceCycles(const MCSchedClassDesc *SC, unsigned UseIdx, unsigned WriteResID) const { + // TODO: The number of read advance entries in a class can be significant + // (~50). Consider compressing the WriteID into a dense ID of those that are + // used by ReadAdvance and representing them as a bitset. for (const MCReadAdvanceEntry *I = &ReadAdvanceTable[SC->ReadAdvanceIdx], *E = I + SC->NumReadAdvanceEntries; I != E; ++I) { if (I->UseIdx < UseIdx) |