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| author | Evan Cheng <evan.cheng@apple.com> | 2010-01-06 19:43:21 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-01-06 19:43:21 +0000 |
| commit | 54eb4c2991796c3014e831fc07e4a6c0a3df10f0 (patch) | |
| tree | 2226409fab428d762b8d9d1286ada7dba69aa308 | |
| parent | d40d03e1bd1d51857fc2f9f9230e334c3a32b249 (diff) | |
Comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92850 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp index 8ed24cce74..352b0efe06 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp @@ -438,6 +438,9 @@ void SelectionDAGISel::SelectBasicBlock(BasicBlock *LLVMBB, SDB->clear(); } +/// ShrinkDemandedOps - A late transformation pass that shrink expressions +/// using TargetLowering::TargetLoweringOpt::ShrinkDemandedOp. It converts +/// x+y to (VT)((SmallVT)x+(SmallVT)y) if the casts are free. void SelectionDAGISel::ShrinkDemandedOps() { SmallVector<SDNode*, 128> Worklist; |