[llvm-commits] [llvm] r151223 - /llvm/trunk/lib/CodeGen/CriticalAntiDepBreaker.cpp

[Jakob Stoklund Olesen]

Author: stoklund
Date: Wed Feb 22 19:15:26 2012
New Revision: 151223

URL: http://llvm.org/viewvc/llvm-project?rev=151223&view=rev
Log:
Handle regmasks in CriticalAntiDepBreaker.

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

Modified: llvm/trunk/lib/CodeGen/CriticalAntiDepBreaker.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/CriticalAntiDepBreaker.cpp?rev=151223&r1=151222&r2=151223&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/CriticalAntiDepBreaker.cpp (original)
+++ llvm/trunk/lib/CodeGen/CriticalAntiDepBreaker.cpp Wed Feb 22 19:15:26 2012
@@ -253,6 +253,17 @@
     // address updates.
     for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
       MachineOperand &MO = MI->getOperand(i);
+
+      if (MO.isRegMask())
+        for (unsigned i = 0, e = TRI->getNumRegs(); i != e; ++i)
+          if (MO.clobbersPhysReg(i)) {
+            DefIndices[i] = Count;
+            KillIndices[i] = ~0u;
+            KeepRegs.erase(i);
+            Classes[i] = 0;
+            RegRefs.erase(i);
+          }
+
       if (!MO.isReg()) continue;
       unsigned Reg = MO.getReg();
       if (Reg == 0) continue;
@@ -355,6 +366,9 @@
     for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) {
       const MachineOperand &CheckOper = MI->getOperand(i);
 
+      if (CheckOper.isRegMask() && CheckOper.clobbersPhysReg(NewReg))
+        return true;
+
       if (!CheckOper.isReg() || !CheckOper.isDef() ||
           CheckOper.getReg() != NewReg)
         continue;