From: Simon Pilgrim <llvm-dev@redking.me.uk>
Date: Sat, 13 Jun 2015 15:23:58 +0000 (+0000)
Subject: [SelectionDAG] Added assertions + UNDEF handling for BSWAP node creation.
X-Git-Tag: llvmorg-3.7.0-rc1~2418
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2c35e7a264608de328d65755d499fb9a94bbf9fe;p=platform%2Fupstream%2Fllvm.git

[SelectionDAG] Added assertions + UNDEF handling for BSWAP node creation.

llvm-svn: 239679
---

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 27fa3d2..20cec6e 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -3082,6 +3082,14 @@ SDValue SelectionDAG::getNode(unsigned Opcode, SDLoc DL,
     if (OpOpcode == ISD::UNDEF)
       return getUNDEF(VT);
     break;
+  case ISD::BSWAP:
+    assert(VT.isInteger() && VT == Operand.getValueType() &&
+           "Invalid BSWAP!");
+    assert((VT.getScalarSizeInBits() % 16 == 0) &&
+           "BSWAP types must be a multiple of 16 bits!");
+    if (OpOpcode == ISD::UNDEF)
+      return getUNDEF(VT);
+    break;
   case ISD::BITCAST:
     // Basic sanity checking.
     assert(VT.getSizeInBits() == Operand.getValueType().getSizeInBits()