diff options
| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2015-06-08 16:19:00 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2015-06-08 16:19:00 +0000 |
| commit | 4791f6d89b01860d68e861522fb68bac6d29a149 (patch) | |
| tree | 54d079f82a8cb078a8798077d204221a54b5b6ec /llvm/lib | |
| parent | 59902c229f5146875fc229057e8dae4cee327f97 (diff) | |
| download | bcm5719-llvm-4791f6d89b01860d68e861522fb68bac6d29a149.tar.gz bcm5719-llvm-4791f6d89b01860d68e861522fb68bac6d29a149.zip | |
[DAGCombiner] Added CTLZ vector constant folding support.
llvm-svn: 239305
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 4 | ||||
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp | 2 |
2 files changed, 4 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 4b9167723f4..a71c6761c75 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -4769,7 +4769,7 @@ SDValue DAGCombiner::visitCTLZ(SDNode *N) { EVT VT = N->getValueType(0); // fold (ctlz c1) -> c2 - if (isa<ConstantSDNode>(N0)) + if (isConstantIntBuildVectorOrConstantInt(N0)) return DAG.getNode(ISD::CTLZ, SDLoc(N), VT, N0); return SDValue(); } @@ -4779,7 +4779,7 @@ SDValue DAGCombiner::visitCTLZ_ZERO_UNDEF(SDNode *N) { EVT VT = N->getValueType(0); // fold (ctlz_zero_undef c1) -> c2 - if (isa<ConstantSDNode>(N0)) + if (isConstantIntBuildVectorOrConstantInt(N0)) return DAG.getNode(ISD::CTLZ_ZERO_UNDEF, SDLoc(N), VT, N0); return SDValue(); } diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp index 92b6a0029b4..804c0805c34 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp @@ -2911,6 +2911,8 @@ SDValue SelectionDAG::getNode(unsigned Opcode, SDLoc DL, case ISD::TRUNCATE: case ISD::UINT_TO_FP: case ISD::SINT_TO_FP: + case ISD::CTLZ: + case ISD::CTLZ_ZERO_UNDEF: case ISD::CTTZ: case ISD::CTTZ_ZERO_UNDEF: case ISD::CTPOP: { |
