X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FRegAllocBase.cpp;h=894aee7a9917024b9fbba90585fe5fc1e8cef738;hb=0526d167a9f8fcd476f4382d933dda208a4eb5c8;hp=3a4d5462a8a0a29ba0fd11c4d70db4152f386779;hpb=5a364c5561ec04e33a6f5d52c14f1bac6f247ea0;p=oota-llvm.git

diff --git a/lib/CodeGen/RegAllocBase.cpp b/lib/CodeGen/RegAllocBase.cpp
index 3a4d5462a8a..894aee7a991 100644
--- a/lib/CodeGen/RegAllocBase.cpp
+++ b/lib/CodeGen/RegAllocBase.cpp
@@ -7,12 +7,11 @@
 //
 //===----------------------------------------------------------------------===//
 //
-// This file defines the RegAllocBase class which provides comon functionality
+// This file defines the RegAllocBase class which provides common functionality
 // for LiveIntervalUnion-based register allocators.
 //
 //===----------------------------------------------------------------------===//
 
-#define DEBUG_TYPE "regalloc"
 #include "RegAllocBase.h"
 #include "Spiller.h"
 #include "llvm/ADT/Statistic.h"
@@ -35,6 +34,8 @@
 
 using namespace llvm;
 
+#define DEBUG_TYPE "regalloc"
+
 STATISTIC(NumNewQueued    , "Number of new live ranges queued");
 
 // Temporary verification option until we can put verification inside
@@ -50,7 +51,7 @@ bool RegAllocBase::VerifyEnabled = false;
 //                         RegAllocBase Implementation
 //===----------------------------------------------------------------------===//
 
-// pin vtable to this file
+// Pin the vtable to this file.
 void RegAllocBase::anchor() {}
 
 void RegAllocBase::init(VirtRegMap &vrm,
@@ -101,8 +102,8 @@ void RegAllocBase::allocatePhysRegs() {
     // register if possible and populate a list of new live intervals that
     // result from splitting.
     DEBUG(dbgs() << "\nselectOrSplit "
-                 << MRI->getRegClass(VirtReg->reg)->getName()
-                 << ':' << *VirtReg << '\n');
+          << MRI->getRegClass(VirtReg->reg)->getName()
+          << ':' << *VirtReg << " w=" << VirtReg->weight << '\n');
     typedef SmallVector<unsigned, 4> VirtRegVec;
     VirtRegVec SplitVRegs;
     unsigned AvailablePhysReg = selectOrSplit(*VirtReg, SplitVRegs);
@@ -110,11 +111,16 @@ void RegAllocBase::allocatePhysRegs() {
     if (AvailablePhysReg == ~0u) {
       // selectOrSplit failed to find a register!
       // Probably caused by an inline asm.
-      MachineInstr *MI;
-      for (MachineRegisterInfo::reg_iterator I = MRI->reg_begin(VirtReg->reg);
-           (MI = I.skipInstruction());)
-        if (MI->isInlineAsm())
+      MachineInstr *MI = nullptr;
+      for (MachineRegisterInfo::reg_instr_iterator
+           I = MRI->reg_instr_begin(VirtReg->reg), E = MRI->reg_instr_end();
+           I != E; ) {
+        MachineInstr *TmpMI = &*(I++);
+        if (TmpMI->isInlineAsm()) {
+          MI = TmpMI;
           break;
+        }
+      }
       if (MI)
         MI->emitError("inline assembly requires more registers than available");
       else