Changes in directory llvm/utils/TableGen:
DAGISelEmitter.cpp updated: 1.243 -> 1.244
---
Log message:
The generated runloop shouldn't require Select to update 'Result'. In fact
we'd like to remove result entirely.
---
Diffs of the changes: (+6 -3)
DAGISelEmitter.cpp | 9 ++++++---
1 files changed, 6 insertions(+), 3 deletions(-)
Index: llvm/utils/TableGen/DAGISelEmitter.cpp
diff -u llvm/utils/TableGen/DAGISelEmitter.cpp:1.243
llvm/utils/TableGen/DAGISelEmitter.cpp:1.244
--- llvm/utils/TableGen/DAGISelEmitter.cpp:1.243 Tue Aug 15 18:27:50 2006
+++ llvm/utils/TableGen/DAGISelEmitter.cpp Tue Aug 15 18:42:26 2006
@@ -3646,8 +3646,11 @@
OS << " memset(ISelQueued, 0, NumBytes);\n";
OS << " memset(ISelSelected, 0, NumBytes);\n";
OS << "\n";
- OS << " SDOperand ResNode;\n";
- OS << " Select(ResNode, Root);\n";
+ OS << " // Create a dummy node (which is not added to allnodes), that
adds\n"
+ << " // a reference to the root node, preventing it from being
deleted,\n"
+ << " // and tracking any changes of the root.\n"
+ << " HandleSDNode Dummy(CurDAG->getRoot());\n"
+ << " ISelQueue.push_back(CurDAG->getRoot().Val);\n";
OS << " while (!ISelQueue.empty()) {\n";
OS << " SDOperand Tmp;\n";
OS << " SDNode *Node = ISelQueue.front();\n";
@@ -3663,7 +3666,7 @@
OS << " ISelQueued = NULL;\n";
OS << " delete[] ISelSelected;\n";
OS << " ISelSelected = NULL;\n";
- OS << " return ResNode;\n";
+ OS << " return Dummy.getValue();\n";
OS << "}\n";
Intrinsics = LoadIntrinsics(Records);
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