From fa404e8a76abfdafefb8806b35f596d288609496 Mon Sep 17 00:00:00 2001 From: Chris Lattner Date: Sun, 9 Jan 2005 19:03:49 +0000 Subject: [PATCH] Teach legalize to deal with DYNAMIC_STACKALLOC (aka a dynamic llvm alloca) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19415 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp index 19e70f59279..a81dbee2406 100644 --- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp +++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp @@ -229,7 +229,7 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) { if (I != LegalizedNodes.end()) return I->second; } - SDOperand Tmp1, Tmp2; + SDOperand Tmp1, Tmp2, Tmp3; SDOperand Result = Op; SDNode *Node = Op.Val; @@ -307,6 +307,21 @@ SDOperand SelectionDAGLegalize::LegalizeOp(SDOperand Op) { Result = DAG.getNode(Node->getOpcode(), MVT::Other, Tmp1, Node->getOperand(1)); break; + case ISD::DYNAMIC_STACKALLOC: + Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. + Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the size. + Tmp3 = LegalizeOp(Node->getOperand(2)); // Legalize the alignment. + if (Tmp1 != Node->getOperand(0) || Tmp2 != Node->getOperand(1) || + Tmp3 != Node->getOperand(2)) + Result = DAG.getNode(ISD::DYNAMIC_STACKALLOC, Node->getValueType(0), + Tmp1, Tmp2, Tmp3); + + // Since this op produces two values, make sure to remember that we + // legalized both of them. + AddLegalizedOperand(SDOperand(Node, 0), Result); + AddLegalizedOperand(SDOperand(Node, 1), Result.getValue(1)); + return Result.getValue(Op.ResNo); + case ISD::CALL: Tmp1 = LegalizeOp(Node->getOperand(0)); // Legalize the chain. Tmp2 = LegalizeOp(Node->getOperand(1)); // Legalize the callee. -- 2.34.1