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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-08-07 18:02:19 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-08-07 18:02:19 +0000 |
| commit | 84ef6ba44394f983d985b02e328cbb2dd779e4b0 (patch) | |
| tree | 812ee61ad1b74460235e7a09aafd4d7f8da79249 /lib/CodeGen/SelectionDAG/SelectionDAG.cpp | |
| parent | 3f5d1a2396915ebff20ce4f5d668ee5c839d1d91 (diff) | |
Add trace accessor methods, implement primitive if-conversion heuristic.
Compare the critical paths of the two traces through an if-conversion
candidate. If the difference is larger than the branch brediction
penalty, reject the if-conversion. If would never pay.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161433 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/SelectionDAG.cpp')
0 files changed, 0 insertions, 0 deletions