Fix the SPR field for MTLR, MFLR, MTCTR, and MFCTR instructions.

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

diff --git a/lib/CodeGen/RegAllocLocal.cpp b/lib/CodeGen/RegAllocLocal.cpp
index 68d5fd95eedbc200fa1738744d4587e58d2f5ce3..2cf8e6327e44a44a718baf919890d204a658652a 100644 (file)
--- a/lib/CodeGen/RegAllocLocal.cpp
+++ b/lib/CodeGen/RegAllocLocal.cpp
@@ -21,10 +21,10 @@
 #include "llvm/CodeGen/LiveVariables.h"
 #include "llvm/Target/TargetInstrInfo.h"
 #include "llvm/Target/TargetMachine.h"
-#include "Support/CommandLine.h"
-#include "Support/Debug.h"
-#include "Support/DenseMap.h"
-#include "Support/Statistic.h"
+#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/Statistic.h"
 using namespace llvm;
 
 namespace {
@@ -225,7 +225,8 @@ int RA::getStackSpaceFor(unsigned VirtReg, const TargetRegisterClass *RC) {
     return I->second;          // Already has space allocated?
 
   // Allocate a new stack object for this spill location...
-  int FrameIdx = MF->getFrameInfo()->CreateStackObject(RC);
+  int FrameIdx = MF->getFrameInfo()->CreateStackObject(RC->getSize(),
+                                                       RC->getAlignment());
 
   // Assign the slot...
   StackSlotForVirtReg.insert(I, std::make_pair(VirtReg, FrameIdx));
@@ -355,39 +356,6 @@ unsigned RA::getFreeReg(const TargetRegisterClass *RC) {
 ///
 void RA::liberatePhysReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator &I,
                          unsigned PhysReg) {
-  // FIXME: This code checks to see if a register is available, but it really
-  // wants to know if a reg is available BEFORE the instruction executes.  If
-  // called after killed operands are freed, it runs the risk of reallocating a
-  // used operand...
-#if 0
-  if (isPhysRegAvailable(PhysReg)) return;  // Already available...
-
-  // Check to see if the register is directly used, not indirectly used through
-  // aliases.  If aliased registers are the ones actually used, we cannot be
-  // sure that we will be able to save the whole thing if we do a reg-reg copy.
-  if (PhysRegsUsed[PhysReg] != -1) {
-    // The virtual register held...
-    unsigned VirtReg = PhysRegsUsed[PhysReg]->second;
-
-    // Check to see if there is a compatible register available.  If so, we can
-    // move the value into the new register...
-    //
-    const TargetRegisterClass *RC = RegInfo->getRegClass(PhysReg);
-    if (unsigned NewReg = getFreeReg(RC)) {
-      // Emit the code to copy the value...
-      RegInfo->copyRegToReg(MBB, I, NewReg, PhysReg, RC);
-
-      // Update our internal state to indicate that PhysReg is available and Reg
-      // isn't.
-      getVirt2PhysRegMapSlot[VirtReg] = 0;
-      removePhysReg(PhysReg);  // Free the physreg
-
-      // Move reference over to new register...
-      assignVirtToPhysReg(VirtReg, NewReg);
-      return;
-    }
-  }
-#endif
   spillPhysReg(MBB, I, PhysReg);
 }
 
@@ -423,7 +391,7 @@ unsigned RA::getReg(MachineBasicBlock &MBB, MachineInstr *I,
              "PhysReg in PhysRegsUseOrder, but is not allocated?");
       if (PhysRegsUsed[R]) {
         // If the current register is compatible, use it.
-        if (RegInfo->getRegClass(R) == RC) {
+        if (RC->contains(R)) {
           PhysReg = R;
           break;
         } else {
@@ -431,7 +399,7 @@ unsigned RA::getReg(MachineBasicBlock &MBB, MachineInstr *I,
           // compatible, use it.
           for (const unsigned *AliasSet = RegInfo->getAliasSet(R);
                *AliasSet; ++AliasSet) {
-            if (RegInfo->getRegClass(*AliasSet) == RC) {
+            if (RC->contains(*AliasSet)) {
               PhysReg = *AliasSet;    // Take an aliased register
               break;
             }