From: Chris Lattner <sabre@nondot.org>
Date: Thu, 12 Jan 2006 18:57:33 +0000 (+0000)
Subject: Don't create rotate instructions in unsupported types, because we don't have
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=af551bcf6be6c2c44b1b5dac5573c58bdc3da972;p=oota-llvm.git

Don't create rotate instructions in unsupported types, because we don't have
promote/expand code yet.  This fixes the 177.mesa failure on PPC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25250 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 1d356689fb8..cb80e250380 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -1184,7 +1184,7 @@ SDOperand DAGCombiner::visitOR(SDNode *N) {
   // check for rotl, rotr
   if (N0.getOpcode() == ISD::SHL && N1.getOpcode() == ISD::SRL &&
       N0.getOperand(0) == N1.getOperand(0) &&
-      TLI.isOperationLegal(ISD::ROTL, VT)) {
+      TLI.isOperationLegal(ISD::ROTL, VT) && TLI.isTypeLegal(VT)) {
     // fold (or (shl x, C1), (srl x, C2)) -> (rotl x, C1)
     if (N0.getOperand(1).getOpcode() == ISD::Constant &&
         N1.getOperand(1).getOpcode() == ISD::Constant) {
@@ -1206,7 +1206,7 @@ SDOperand DAGCombiner::visitOR(SDNode *N) {
       if (ConstantSDNode *SUBC = 
           dyn_cast<ConstantSDNode>(N0.getOperand(1).getOperand(0)))
         if (SUBC->getValue() == OpSizeInBits) {
-          if (TLI.isOperationLegal(ISD::ROTR, VT))
+          if (TLI.isOperationLegal(ISD::ROTR, VT) && TLI.isTypeLegal(VT))
             return DAG.getNode(ISD::ROTR, VT, N0.getOperand(0), 
                                N1.getOperand(1));
           else