[llvm-commits] [llvm] r43256 - /llvm/trunk/lib/CodeGen/TwoAddressInstructionPass.cpp

[Evan Cheng]

Author: evancheng
Date: Tue Oct 23 15:14:40 2007
New Revision: 43256

URL: http://llvm.org/viewvc/llvm-project?rev=43256&view=rev
Log:
It's possible to commute instrctions with more than 3 operands.

Modified:
    llvm/trunk/lib/CodeGen/TwoAddressInstructionPass.cpp

Modified: llvm/trunk/lib/CodeGen/TwoAddressInstructionPass.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/TwoAddressInstructionPass.cpp?rev=43256&r1=43255&r2=43256&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/TwoAddressInstructionPass.cpp (original)
+++ llvm/trunk/lib/CodeGen/TwoAddressInstructionPass.cpp Tue Oct 23 15:14:40 2007
@@ -143,7 +143,7 @@
             // so, swap the B and C operands.  This makes the live ranges of A
             // and C joinable.
             // FIXME: This code also works for A := B op C instructions.
-            if ((TID->Flags & M_COMMUTABLE) && mi->getNumOperands() == 3) {
+            if ((TID->Flags & M_COMMUTABLE) && mi->getNumOperands() >= 3) {
               assert(mi->getOperand(3-si).isRegister() &&
                      "Not a proper commutative instruction!");
               unsigned regC = mi->getOperand(3-si).getReg();