[SDAG] Revert r296476 (and r296486, r296668, r296690).

This patch causes compile times for some patterns to explode. I have
a (large, unreduced) test case that slows down by more than 20x and
several test cases slow down by 2x. I'm sending some of the test cases
directly to Nirav and following up with more details in the review log,
but this should unblock anyone else hitting this.

llvm-svn: 296862

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 123938646a3..fb1c3bcea59 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -3355,7 +3355,7 @@ void SelectionDAGISel::SelectCodeCommon(SDNode *NodeToMatch,
       // a single use.
       bool HasMultipleUses = false;
       for (unsigned i = 1, e = NodeStack.size()-1; i != e; ++i)
-        if (!NodeStack[i].getNode()->hasOneUse()) {
+        if (!NodeStack[i].hasOneUse()) {
           HasMultipleUses = true;
           break;
         }