[llvm-commits] [llvm] r47575 - /llvm/trunk/lib/Target/X86/X86ISelDAGToDAG.cpp

[Dan Gohman]

Author: djg
Date: Mon Feb 25 16:43:48 2008
New Revision: 47575

URL: http://llvm.org/viewvc/llvm-project?rev=47575&view=rev
Log:
Revert the assert for MUL_LOHI with an unused high result; Chris
pointed out that this isn't correct at -O0.

Modified:
    llvm/trunk/lib/Target/X86/X86ISelDAGToDAG.cpp

Modified: llvm/trunk/lib/Target/X86/X86ISelDAGToDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelDAGToDAG.cpp?rev=47575&r1=47574&r2=47575&view=diff

==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelDAGToDAG.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelDAGToDAG.cpp Mon Feb 25 16:43:48 2008
@@ -1221,9 +1221,6 @@
 
     case ISD::SMUL_LOHI:
     case ISD::UMUL_LOHI: {
-      assert(!N.getValue(1).use_empty() &&
-             "A MUL_LOHI with an unused high result should fold to a MUL!");
-
       SDOperand N0 = Node->getOperand(0);
       SDOperand N1 = Node->getOperand(1);