Simplify this code by using use_iterator instead of reg_iterator

and skipping the defs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82811 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/MachineSink.cpp b/lib/CodeGen/MachineSink.cpp
index 7fb33c6e4cedf51301621c7593b88760a11a83da..f975ad344ade007da7dc342ae88f0e5903fac10c 100644 (file)
--- a/lib/CodeGen/MachineSink.cpp
+++ b/lib/CodeGen/MachineSink.cpp
@@ -70,10 +70,8 @@ bool MachineSinking::AllUsesDominatedByBlock(unsigned Reg,
                                              MachineBasicBlock *MBB) const {
   assert(TargetRegisterInfo::isVirtualRegister(Reg) &&
          "Only makes sense for vregs");
-  for (MachineRegisterInfo::reg_iterator I = RegInfo->reg_begin(Reg),
-       E = RegInfo->reg_end(); I != E; ++I) {
-    if (I.getOperand().isDef()) continue;  // ignore def.
-    
+  for (MachineRegisterInfo::use_iterator I = RegInfo->use_begin(Reg),
+       E = RegInfo->use_end(); I != E; ++I) {
     // Determine the block of the use.
     MachineInstr *UseInst = &*I;
     MachineBasicBlock *UseBlock = UseInst->getParent();