Prevent PPC::BCC first operand, the PRED number, from being isel'd into a LI instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37790 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
index 35ab9de1134855f98652a1086352f47075c56916..730bac653a40787c7595db90ab042bba0b0dc33f 100644 (file)
--- a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
+++ b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
@@ -1080,7 +1080,10 @@ SDNode *PPCDAGToDAGISel::Select(SDOperand Op) {
     // Op #2 is the CR#
     // Op #3 is the Dest MBB
     AddToISelQueue(N->getOperand(4));  // Op #4 is the Flag.
-    SDOperand Ops[] = { N->getOperand(1), N->getOperand(2), N->getOperand(3),
+    // Prevent PPC::PRED_* from being selected into LI.
+    SDOperand Pred =
+      getI32Imm(cast<ConstantSDNode>(N->getOperand(1))->getValue());
+    SDOperand Ops[] = { Pred, N->getOperand(2), N->getOperand(3),
       N->getOperand(0), N->getOperand(4) };
     return CurDAG->SelectNodeTo(N, PPC::BCC, MVT::Other, Ops, 5);
   }