[llvm] r201974 - LocalStackSlotAllocation: Turn one-iteration loop into if.

[Benjamin Kramer]

Author: d0k
Date: Sun Feb 23 07:34:21 2014
New Revision: 201974

URL: http://llvm.org/viewvc/llvm-project?rev=201974&view=rev
Log:
LocalStackSlotAllocation: Turn one-iteration loop into if.

No functionality change.

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

Modified: llvm/trunk/lib/CodeGen/LocalStackSlotAllocation.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/LocalStackSlotAllocation.cpp?rev=201974&r1=201973&r2=201974&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/LocalStackSlotAllocation.cpp (original)
+++ llvm/trunk/lib/CodeGen/LocalStackSlotAllocation.cpp Sun Feb 23 07:34:21 2014
@@ -377,18 +377,11 @@ bool LocalStackSlotPass::insertFrameRefe
       // processed all FrameRefs before this one, just check whether or not
       // the next FrameRef will be able to reuse this new register. If not,
       // then don't bother creating it.
-      bool CanReuse = false;
-      for (int refn = ref + 1; refn < e; ++refn) {
-        FrameRef &FRN = FrameReferenceInsns[refn];
-        MachineBasicBlock::iterator J = FRN.getMachineInstr();
-        MachineInstr *MIN = J;
-
-        CanReuse = lookupCandidateBaseReg(BaseOffset, FrameSizeAdjust,
-                                          FRN.getLocalOffset(), MIN, TRI);
-        break;
-      }
-
-      if (!CanReuse) {
+      if (ref + 1 >= e ||
+          !lookupCandidateBaseReg(
+              BaseOffset, FrameSizeAdjust,
+              FrameReferenceInsns[ref + 1].getLocalOffset(),
+              FrameReferenceInsns[ref + 1].getMachineInstr(), TRI)) {
         BaseOffset = PrevBaseOffset;
         continue;
       }