commit 62ad138d7033e207842337c9fb909f70e32b14ea
author Dan Gohman <gohman@apple.com> Tue Apr 14 22:45:05 2009 +0000
committer Dan Gohman <gohman@apple.com> Tue Apr 14 22:45:05 2009 +0000
tree 29511f1919493bb21b19cc885ae8b78054c6a104
parent 00f16283cf12c53c2626d21fb534f9422500f0f1

For the h-register addressing-mode trick, use the correct value for
any non-address uses of the address value. This fixes 186.crafty.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69094 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/X86/X86ISelDAGToDAG.cpp

diff --git a/lib/Target/X86/X86ISelDAGToDAG.cpp b/lib/Target/X86/X86ISelDAGToDAG.cpp
index 41a3c41..18a574f 100644
--- a/lib/Target/X86/X86ISelDAGToDAG.cpp
+++ b/lib/Target/X86/X86ISelDAGToDAG.cpp
@@ -1049,6 +1049,9 @@
                                       X, Eight);
         SDValue And = CurDAG->getNode(ISD::AND, dl, N.getValueType(),
                                       Srl, Mask);
+        SDValue ShlCount = CurDAG->getConstant(ScaleLog, MVT::i8);
+        SDValue Shl = CurDAG->getNode(ISD::SHL, dl, N.getValueType(),
+                                      And, ShlCount);
 
         // Insert the new nodes into the topological ordering.
         if (Eight.getNode()->getNodeId() == -1 ||
@@ -1071,7 +1074,17 @@
           CurDAG->RepositionNode(N.getNode(), And.getNode());
           And.getNode()->setNodeId(N.getNode()->getNodeId());
         }
-        CurDAG->ReplaceAllUsesWith(N, And);
+        if (ShlCount.getNode()->getNodeId() == -1 ||
+            ShlCount.getNode()->getNodeId() > X.getNode()->getNodeId()) {
+          CurDAG->RepositionNode(X.getNode(), ShlCount.getNode());
+          ShlCount.getNode()->setNodeId(N.getNode()->getNodeId());
+        }
+        if (Shl.getNode()->getNodeId() == -1 ||
+            Shl.getNode()->getNodeId() > N.getNode()->getNodeId()) {
+          CurDAG->RepositionNode(N.getNode(), Shl.getNode());
+          Shl.getNode()->setNodeId(N.getNode()->getNodeId());
+        }
+        CurDAG->ReplaceAllUsesWith(N, Shl);
         AM.IndexReg = And;
         AM.Scale = (1 << ScaleLog);
         return false;