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After legalizing a DAG, delete dead nodes to save space.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19346 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-01-07 21:09:37 +00:00
parent 0e12e6e041
commit 62fd269c14
1 changed files with 1 additions and 6 deletions
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7
lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
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@ -167,7 +167,6 @@ SelectionDAGLegalize::SelectionDAGLegalize(TargetLowering &tli,
setValueTypeAction(MVT::f32, Promote);
}
void SelectionDAGLegalize::LegalizeDAG() {
SDOperand OldRoot = DAG.getRoot();
SDOperand NewRoot = LegalizeOp(OldRoot);
@ -177,11 +176,7 @@ void SelectionDAGLegalize::LegalizeDAG() {
LegalizedNodes.clear();
// Remove dead nodes now.
if (OldRoot != NewRoot)
// Delete all of these efficiently first.
;
// Then scan AllNodes.
DAG.RemoveDeadNodes(OldRoot.Val);
}
SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) {