diff options
Diffstat (limited to 'lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp')
| -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; |