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| author | Owen Anderson <resistor@mac.com> | 2014-01-20 18:41:34 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2014-01-20 18:41:34 +0000 |
| commit | daa4c91647ae5abfc55bd1425ecf146680ca7bd1 (patch) | |
| tree | fd21e8dd21cb02cc65e9245f1a26ea50a53cff00 /lib/CodeGen | |
| parent | 61a7bb039a1d218a17db16383ebed43abbdd1b2b (diff) | |
| download | llvm-daa4c91647ae5abfc55bd1425ecf146680ca7bd1.tar.gz llvm-daa4c91647ae5abfc55bd1425ecf146680ca7bd1.tar.bz2 llvm-daa4c91647ae5abfc55bd1425ecf146680ca7bd1.tar.xz | |
Allow SMUL_LOHI and UMUL_LOHI to be narrow to MUL on targets where MUL is Custom rather than Legal. Even if the target is doing some kind of expansion for MUL, it's pretty much guaranteed to be more efficent than whatever it does for SMUL_LOHI or UMUL_LOHI!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199678 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 0530dbc12b..8205feafbd 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -2249,7 +2249,7 @@ SDValue DAGCombiner::SimplifyNodeWithTwoResults(SDNode *N, unsigned LoOp, bool HiExists = N->hasAnyUseOfValue(1); if (!HiExists && (!LegalOperations || - TLI.isOperationLegal(LoOp, N->getValueType(0)))) { + TLI.isOperationLegalOrCustom(LoOp, N->getValueType(0)))) { SDValue Res = DAG.getNode(LoOp, SDLoc(N), N->getValueType(0), N->op_begin(), N->getNumOperands()); return CombineTo(N, Res, Res); |