Switch a number of loops in lib/CodeGen over to range-based for-loops, now that

the MachineRegisterInfo iterators are compatible with it.

llvm-svn: 204075

1 files changed, 6 insertions, 13 deletions

diff --git a/llvm/lib/CodeGen/PeepholeOptimizer.cpp b/llvm/lib/CodeGen/PeepholeOptimizer.cpp
index eac72599a2a..73c9e1ce1a8 100644
--- a/llvm/lib/CodeGen/PeepholeOptimizer.cpp
+++ b/llvm/lib/CodeGen/PeepholeOptimizer.cpp
@@ -187,10 +187,8 @@ optimizeExtInstr(MachineInstr *MI, MachineBasicBlock *MBB,
   // The source has other uses. See if we can replace the other uses with use of
   // the result of the extension.
   SmallPtrSet<MachineBasicBlock*, 4> ReachedBBs;
-  for (MachineRegisterInfo::use_instr_nodbg_iterator
-       UI = MRI->use_instr_nodbg_begin(DstReg), UE = MRI->use_instr_nodbg_end();
-       UI != UE; ++UI)
-    ReachedBBs.insert(UI->getParent());
+  for (MachineInstr &UI : MRI->use_nodbg_instructions(DstReg))
+    ReachedBBs.insert(UI.getParent());
 
   // Uses that are in the same BB of uses of the result of the instruction.
   SmallVector<MachineOperand*, 8> Uses;
@@ -199,10 +197,7 @@ optimizeExtInstr(MachineInstr *MI, MachineBasicBlock *MBB,
   SmallVector<MachineOperand*, 8> ExtendedUses;
 
   bool ExtendLife = true;
-  for (MachineRegisterInfo::use_nodbg_iterator
-       UI = MRI->use_nodbg_begin(SrcReg), UE = MRI->use_nodbg_end();
-       UI != UE; ++UI) {
-    MachineOperand &UseMO = *UI;
+  for (MachineOperand &UseMO : MRI->use_nodbg_operands(SrcReg)) {
     MachineInstr *UseMI = UseMO.getParent();
     if (UseMI == MI)
       continue;
@@ -270,11 +265,9 @@ optimizeExtInstr(MachineInstr *MI, MachineBasicBlock *MBB,
     // Look for PHI uses of the extended result, we don't want to extend the
     // liveness of a PHI input. It breaks all kinds of assumptions down
     // stream. A PHI use is expected to be the kill of its source values.
-    for (MachineRegisterInfo::use_instr_nodbg_iterator
-         UI = MRI->use_instr_nodbg_begin(DstReg),
-         UE = MRI->use_instr_nodbg_end(); UI != UE; ++UI)
-      if (UI->isPHI())
-        PHIBBs.insert(UI->getParent());
+    for (MachineInstr &UI : MRI->use_nodbg_instructions(DstReg))
+      if (UI.isPHI())
+        PHIBBs.insert(UI.getParent());
 
     const TargetRegisterClass *RC = MRI->getRegClass(SrcReg);
     for (unsigned i = 0, e = Uses.size(); i != e; ++i) {