This is useful when trying to figure out why GVN didn't eliminate redundant
loads.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72565
91177308-0d34-0410-b5e6-
96231b3b80d8
MemDepResult dep = MD->getDependency(L);
// If the value isn't available, don't do anything!
MemDepResult dep = MD->getDependency(L);
// If the value isn't available, don't do anything!
+ if (dep.isClobber()) {
+ DEBUG(
+ // fast print dep, using operator<< on instruction would be too slow
+ DOUT << "GVN: load ";
+ WriteAsOperand(*DOUT.stream(), L);
+ Instruction *I = dep.getInst();
+ DOUT << " is clobbered by " << I->getOpcodeName() << " instruction ";
+ WriteAsOperand(*DOUT.stream(), I, false);
+ DOUT << "\n";
+ );
// If it is defined in another block, try harder.
if (dep.isNonLocal())
// If it is defined in another block, try harder.
if (dep.isNonLocal())