From 657416cfba9f0b2823cf885391441971edcf4190 Mon Sep 17 00:00:00 2001 From: Evan Cheng Date: Wed, 1 Feb 2006 06:06:31 +0000 Subject: [PATCH] If a pattern's root node is a constant, its size should be 3 rather than 2. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25870 91177308-0d34-0410-b5e6-96231b3b80d8 --- utils/TableGen/DAGISelEmitter.cpp | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/utils/TableGen/DAGISelEmitter.cpp b/utils/TableGen/DAGISelEmitter.cpp index c384f536239..f0ecd66fb2f 100644 --- a/utils/TableGen/DAGISelEmitter.cpp +++ b/utils/TableGen/DAGISelEmitter.cpp @@ -1709,6 +1709,10 @@ static unsigned getPatternSize(TreePatternNode *P, DAGISelEmitter &ISE) { P->getExtTypeNum(0) == MVT::Flag && "Not a valid pattern node to size!"); unsigned Size = 2; // The node itself. + // If the root node is a ConstantSDNode, increases its size. + // e.g. (set R32:$dst, 0). + if (P->isLeaf() && dynamic_cast(P->getLeafValue())) + Size++; // FIXME: This is a hack to statically increase the priority of patterns // which maps a sub-dag to a complex pattern. e.g. favors LEA over ADD. -- 2.34.1