[SelectionDAG] Add a SDTCisSameSizeAs type constraint that can be used to ensure...

[oota-llvm.git] / lib / CodeGen / CriticalAntiDepBreaker.cpp

diff --git a/lib/CodeGen/CriticalAntiDepBreaker.cpp b/lib/CodeGen/CriticalAntiDepBreaker.cpp
index 5c643d43ff160814d71bdf603272d68264849158..c924ba30c8a11b54a4f1df39cc749f2493f1ec4b 100644 (file)
--- a/lib/CodeGen/CriticalAntiDepBreaker.cpp
+++ b/lib/CodeGen/CriticalAntiDepBreaker.cpp
@@ -20,7 +20,6 @@
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/raw_ostream.h"
 #include "llvm/Target/TargetInstrInfo.h"
-#include "llvm/Target/TargetMachine.h"
 #include "llvm/Target/TargetRegisterInfo.h"
 #include "llvm/Target/TargetSubtargetInfo.h"
 
@@ -53,14 +52,13 @@ void CriticalAntiDepBreaker::StartBlock(MachineBasicBlock *BB) {
   // Clear "do not change" set.
   KeepRegs.reset();
 
-  bool IsReturnBlock = (BBSize != 0 && BB->back().isReturn());
+  bool IsReturnBlock = BB->isReturnBlock();
 
   // Examine the live-in regs of all successors.
   for (MachineBasicBlock::succ_iterator SI = BB->succ_begin(),
          SE = BB->succ_end(); SI != SE; ++SI)
-    for (MachineBasicBlock::livein_iterator I = (*SI)->livein_begin(),
-           E = (*SI)->livein_end(); I != E; ++I) {
-      for (MCRegAliasIterator AI(*I, TRI, true); AI.isValid(); ++AI) {
+    for (const auto &LI : (*SI)->liveins()) {
+      for (MCRegAliasIterator AI(LI.PhysReg, TRI, true); AI.isValid(); ++AI) {
         unsigned Reg = *AI;
         Classes[Reg] = reinterpret_cast<TargetRegisterClass *>(-1);
         KillIndices[Reg] = BBSize;
@@ -72,7 +70,7 @@ void CriticalAntiDepBreaker::StartBlock(MachineBasicBlock *BB) {
   // all callee-saved registers. In non-return this is any
   // callee-saved register that is not saved in the prolog.
   const MachineFrameInfo *MFI = MF.getFrameInfo();
-  BitVector Pristine = MFI->getPristineRegs(BB);
+  BitVector Pristine = MFI->getPristineRegs(MF);
   for (const MCPhysReg *I = TRI->getCalleeSavedRegs(&MF); *I; ++I) {
     if (!IsReturnBlock && !Pristine.test(*I)) continue;
     for (MCRegAliasIterator AI(*I, TRI, true); AI.isValid(); ++AI) {