commit d31f972bd33de85071c716f69bf5c6d735f730f2
author Rafael Espindola <rafael.espindola@gmail.com> Tue Jun 29 14:02:34 2010 +0000
committer Rafael Espindola <rafael.espindola@gmail.com> Tue Jun 29 14:02:34 2010 +0000
tree 043445afb1aebab394f490a791eb8f072a6f7377
parent 17c6e6d9cf4c9e56a6a28e4d0ae3699d376a8962

Add a VT argument to getMinimalPhysRegClass and replace the copy related uses
of getPhysicalRegisterRegClass with it.

If we want to make a copy (or estimate its cost), it is better to use the
smallest class as more efficient operations might be possible.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107140 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/SelectionDAG/InstrEmitter.cpp

diff --git a/lib/CodeGen/SelectionDAG/InstrEmitter.cpp b/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
index 61a7341..0cb463d 100644
--- a/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
+++ b/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
@@ -123,7 +123,7 @@
 
   EVT VT = Node->getValueType(ResNo);
   const TargetRegisterClass *SrcRC = 0, *DstRC = 0;
-  SrcRC = TRI->getPhysicalRegisterRegClass(SrcReg, VT);
+  SrcRC = TRI->getMinimalPhysRegClass(SrcReg, VT);
   
   // Figure out the register class to create for the destreg.
   if (VRBase) {
@@ -794,13 +794,13 @@
     if (TargetRegisterInfo::isVirtualRegister(SrcReg))
       SrcTRC = MRI->getRegClass(SrcReg);
     else
-      SrcTRC = TRI->getPhysicalRegisterRegClass(SrcReg,SrcVal.getValueType());
+      SrcTRC = TRI->getMinimalPhysRegClass(SrcReg,SrcVal.getValueType());
 
     if (TargetRegisterInfo::isVirtualRegister(DestReg))
       DstTRC = MRI->getRegClass(DestReg);
     else
-      DstTRC = TRI->getPhysicalRegisterRegClass(DestReg,
-                                            Node->getOperand(1).getValueType());
+      DstTRC = TRI->getMinimalPhysRegClass(DestReg,
+                                           Node->getOperand(1).getValueType());
 
     bool Emitted = TII->copyRegToReg(*MBB, InsertPos, DestReg, SrcReg,
                                      DstTRC, SrcTRC, Node->getDebugLoc());

lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp

diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp
index ad8630a..3b86c32 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGFast.cpp
@@ -535,7 +535,7 @@
         SUnit *LRDef = LiveRegDefs[Reg];
         EVT VT = getPhysicalRegisterVT(LRDef->getNode(), Reg, TII);
         const TargetRegisterClass *RC =
-          TRI->getPhysicalRegisterRegClass(Reg, VT);
+          TRI->getMinimalPhysRegClass(Reg, VT);
         const TargetRegisterClass *DestRC = TRI->getCrossCopyRegClass(RC);
 
         // If cross copy register class is null, then it must be possible copy

lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp

diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
index f5d4d65..3ef521c 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp
@@ -795,7 +795,7 @@
         SUnit *LRDef = LiveRegDefs[Reg];
         EVT VT = getPhysicalRegisterVT(LRDef->getNode(), Reg, TII);
         const TargetRegisterClass *RC =
-          TRI->getPhysicalRegisterRegClass(Reg, VT);
+          TRI->getMinimalPhysRegClass(Reg, VT);
         const TargetRegisterClass *DestRC = TRI->getCrossCopyRegClass(RC);
 
         // If cross copy register class is null, then it must be possible copy

lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp

diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
index aa6ce05..ebc76e9 100644
--- a/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
+++ b/lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp
@@ -101,7 +101,7 @@
         II.ImplicitDefs[ResNo - II.getNumDefs()] == Reg) {
       PhysReg = Reg;
       const TargetRegisterClass *RC =
-        TRI->getPhysicalRegisterRegClass(Reg, Def->getValueType(ResNo));
+        TRI->getMinimalPhysRegClass(Reg, Def->getValueType(ResNo));
       Cost = RC->getCopyCost();
     }
   }