From 1b63391fdfb4ec3bd02c9fd6cd9e9e85dc9b76f5 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Sat, 16 Sep 2006 00:21:44 +0000 Subject: simplify control flow, no functionality change llvm-svn: 30403 --- llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) (limited to 'llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp') 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(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; -- cgit v1.2.3