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| author | Sjoerd Meijer <sjoerd.meijer@arm.com> | 2016-07-08 15:32:01 +0000 |
|---|---|---|
| committer | Sjoerd Meijer <sjoerd.meijer@arm.com> | 2016-07-08 15:32:01 +0000 |
| commit | 1ee119f897125df5df7acaec00103e86da46898e (patch) | |
| tree | aa28b1cc23863b32fa02ac1074d4af691b1e936b /llvm/lib | |
| parent | 50ecf5de016df669b85241ab55a66f80c0443ac5 (diff) | |
| download | bcm5719-llvm-1ee119f897125df5df7acaec00103e86da46898e.tar.gz bcm5719-llvm-1ee119f897125df5df7acaec00103e86da46898e.zip | |
Do not expand SDIV when compiling for minimum code size
Differential Revision: http://reviews.llvm.org/D22139
llvm-svn: 274855
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 2931ad276a4..3a67fe4ec9d 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -14475,6 +14475,11 @@ SDValue DAGCombiner::SimplifySetCC(EVT VT, SDValue N0, SDValue N1, /// by a magic number. /// Ref: "Hacker's Delight" or "The PowerPC Compiler Writer's Guide". SDValue DAGCombiner::BuildSDIV(SDNode *N) { + // when optimising for minimum size, we don't want to expand a div to a mul + // and a shift. + if (DAG.getMachineFunction().getFunction()->optForMinSize()) + return SDValue(); + ConstantSDNode *C = isConstOrConstSplat(N->getOperand(1)); if (!C) return SDValue(); |
