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author | Chris Lattner <sabre@nondot.org> | 2006-09-16 00:21:44 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2006-09-16 00:21:44 +0000 |
commit | 1b63391fdfb4ec3bd02c9fd6cd9e9e85dc9b76f5 (patch) | |
tree | 92f9bb94718f06ef35fa582693c2445e5a0b9a2c /llvm/lib | |
parent | fbadbda6ba2a9a4620a4de11f2ed2d902d181c07 (diff) | |
download | bcm5719-llvm-1b63391fdfb4ec3bd02c9fd6cd9e9e85dc9b76f5.tar.gz bcm5719-llvm-1b63391fdfb4ec3bd02c9fd6cd9e9e85dc9b76f5.zip |
simplify control flow, no functionality change
llvm-svn: 30403
Diffstat (limited to 'llvm/lib')
-rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index 8eddebd01aa..7c7dc437b9e 100644 --- a/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -4723,22 +4723,28 @@ void SelectionDAGLegalize::ExpandOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi){ LH.getOpcode() == ISD::SRA && LH.getOperand(0) == LL && LH.getOperand(1).getOpcode() == ISD::Constant && cast<ConstantSDNode>(LH.getOperand(1))->getValue() == SH) { + // FIXME: Move this to the dag combiner. + + // Low part: + Lo = DAG.getNode(ISD::MUL, NVT, LL, RL); + // High part: Hi = DAG.getNode(ISD::MULHS, NVT, LL, RL); - UseLibCall = false; + break; } else if (HasMULHU) { + // Low part: + Lo = DAG.getNode(ISD::MUL, NVT, LL, RL); + + // High part: Hi = DAG.getNode(ISD::MULHU, NVT, LL, RL); RH = DAG.getNode(ISD::MUL, NVT, LL, RH); LH = DAG.getNode(ISD::MUL, NVT, LH, RL); Hi = DAG.getNode(ISD::ADD, NVT, Hi, RH); Hi = DAG.getNode(ISD::ADD, NVT, Hi, LH); - UseLibCall = false; + break; } - if (!UseLibCall) - Lo = DAG.getNode(ISD::MUL, NVT, LL, RL); } - if (UseLibCall) - Lo = ExpandLibCall("__muldi3" , Node, Hi); + Lo = ExpandLibCall("__muldi3" , Node, Hi); break; } case ISD::SDIV: Lo = ExpandLibCall("__divdi3" , Node, Hi); break; |