+//===-- SparcRegClassInfo.cpp - Register class def'ns for Sparc -----------===//
+//
+// This file defines the register classes used by the Sparc target description.
+//
+//===----------------------------------------------------------------------===//
+
#include "SparcRegClassInfo.h"
-#include "llvm/CodeGen/IGNode.h"
+#include "llvm/CodeGen/RegAllocCommon.h"
#include "llvm/Target/Sparc.h"
-#include <iostream>
+#include "llvm/Type.h"
using std::cerr;
+using std::vector;
//-----------------------------------------------------------------------------
// Int Register Class - method for coloring a node in the interference graph.
// If both above fail, spill.
//
//-----------------------------------------------------------------------------
-void SparcIntRegClass::colorIGNode(IGNode * Node, bool IsColorUsedArr[]) const {
+void SparcIntRegClass::colorIGNode(IGNode * Node, vector<bool> &IsColorUsedArr) const {
LiveRange *LR = Node->getParentLR();
- unsigned NumNeighbors = Node->getNumOfNeighbors(); // total # of neighbors
-
- for (unsigned n=0; n < NumNeighbors; n++) { // for each neigh
- IGNode *NeighIGNode = Node->getAdjIGNode(n);
- LiveRange *NeighLR = NeighIGNode->getParentLR();
-
- if(NeighLR->hasColor()) // if has a color
- IsColorUsedArr[NeighLR->getColor()] = true; // record that color
-
- else if (NeighLR->hasSuggestedColor()) {
-
- // if the neighbout can use the suggested color
- if(NeighLR->isSuggestedColorUsable())
- IsColorUsedArr[NeighLR->getSuggestedColor()] = true;
- }
- }
if( DEBUG_RA ) {
cerr << "\nColoring LR [CallInt=" << LR->isCallInterference() <<"]:";
unsigned SugCol = LR->getSuggestedColor();
- if( ! IsColorUsedArr[ SugCol ] ) {
+ if (!IsColorUsedArr[SugCol]) {
if( LR->isSuggestedColorUsable() ) {
if( ! LR->isCallInterference() ) {
// start with volatiles (we can allocate volatiles safely)
- SearchStart = SparcIntRegOrder::StartOfAllRegs;
+ SearchStart = SparcIntRegClass::StartOfAllRegs;
}
else {
// start with non volatiles (no non-volatiles)
- SearchStart = SparcIntRegOrder::StartOfNonVolatileRegs;
+ SearchStart = SparcIntRegClass::StartOfNonVolatileRegs;
}
unsigned c=0; // color
// find first unused color
- for( c=SearchStart; c < SparcIntRegOrder::NumOfAvailRegs; c++) {
- if( ! IsColorUsedArr[ c ] ) { ColorFound = true; break; }
+ for( c=SearchStart; c < SparcIntRegClass::NumOfAvailRegs; c++) {
+ if(!IsColorUsedArr[c] ) { ColorFound = true; break; }
}
if( ColorFound) {
else if( LR->isCallInterference() )
{
// start from 0 - try to find even a volatile this time
- SearchStart = SparcIntRegOrder::StartOfAllRegs;
+ SearchStart = SparcIntRegClass::StartOfAllRegs;
// find first unused volatile color
- for(c=SearchStart; c < SparcIntRegOrder::StartOfNonVolatileRegs; c++) {
+ for(c=SearchStart; c < SparcIntRegClass::StartOfNonVolatileRegs; c++) {
if( ! IsColorUsedArr[ c ] ) { ColorFound = true; break; }
}
// If a color is still not fond, mark for spilling
//
//----------------------------------------------------------------------------
-void SparcFloatRegClass::colorIGNode(IGNode * Node,bool IsColorUsedArr[]) const
-{
+void SparcFloatRegClass::colorIGNode(IGNode * Node,
+ vector<bool> &IsColorUsedArr) const{
+ LiveRange *LR = Node->getParentLR();
- LiveRange * LR = Node->getParentLR();
+ // Mark the second color for double-precision registers:
+ // This is UGLY and should be merged into nearly identical code
+ // in RegClass::colorIGNode that handles the first color.
+ //
unsigned NumNeighbors = Node->getNumOfNeighbors(); // total # of neighbors
-
for(unsigned n=0; n < NumNeighbors; n++) { // for each neigh
IGNode *NeighIGNode = Node->getAdjIGNode(n);
LiveRange *NeighLR = NeighIGNode->getParentLR();
-
- if( NeighLR->hasColor() ) { // if neigh has a color
- IsColorUsedArr[ NeighLR->getColor() ] = true; // record that color
- if( NeighLR->getTypeID() == Type::DoubleTyID )
- IsColorUsedArr[ (NeighLR->getColor()) + 1 ] = true;
- }
- else if( NeighLR->hasSuggestedColor() ) { // if neigh has sugg color
-
- if( NeighLR-> isSuggestedColorUsable() ) {
-
- // if the neighbout can use the suggested color
-
+
+ if( NeighLR->hasColor() &&
+ NeighLR->getType() == Type::DoubleTy) {
+ IsColorUsedArr[ (NeighLR->getColor()) + 1 ] = true;
+
+ } else if (NeighLR->hasSuggestedColor() &&
+ NeighLR-> isSuggestedColorUsable() ) {
+
+ // if the neighbour can use the suggested color
IsColorUsedArr[ NeighLR->getSuggestedColor() ] = true;
- if( NeighLR->getTypeID() == Type::DoubleTyID )
+ if (NeighLR->getType() == Type::DoubleTy)
IsColorUsedArr[ (NeighLR->getSuggestedColor()) + 1 ] = true;
- }
-
- }
-
+ }
}
-
// **NOTE: We don't check for call interferences in allocating suggested
// color in this class since ALL registers are volatile. If this fact
// changes, we should change the following part
//- see SparcIntRegClass::colorIGNode()
-
+ //
if( LR->hasSuggestedColor() ) {
if( ! IsColorUsedArr[ LR->getSuggestedColor() ] ) {
LR->setColor( LR->getSuggestedColor() );
int ColorFound = -1; // have we found a color yet?
bool isCallInterf = LR->isCallInterference();
- // if value is a double - search the double only reigon (f32 - f63)
+ // if value is a double - search the double only region (f32 - f63)
// i.e. we try to allocate f32 - f63 first for doubles since singles
// cannot go there. By doing that, we provide more space for singles
// in f0 - f31
//
- if( LR->getTypeID() == Type::DoubleTyID )
+ if (LR->getType() == Type::DoubleTy)
ColorFound = findFloatColor( LR, 32, 64, IsColorUsedArr );
//if this Node is between calls (i.e., no call interferences )
if( ! isCallInterf ) {
// start with volatiles (we can allocate volatiles safely)
- SearchStart = SparcFloatRegOrder::StartOfAllRegs;
+ SearchStart = SparcFloatRegClass::StartOfAllRegs;
}
else {
// start with non volatiles (no non-volatiles)
- SearchStart = SparcFloatRegOrder::StartOfNonVolatileRegs;
+ SearchStart = SparcFloatRegClass::StartOfNonVolatileRegs;
}
ColorFound = findFloatColor( LR, SearchStart, 32, IsColorUsedArr );
// color could be found.
// Now try to allocate even a volatile color
- ColorFound = findFloatColor( LR, SparcFloatRegOrder::StartOfAllRegs,
- SparcFloatRegOrder::StartOfNonVolatileRegs,
+ ColorFound = findFloatColor( LR, SparcFloatRegClass::StartOfAllRegs,
+ SparcFloatRegClass::StartOfNonVolatileRegs,
IsColorUsedArr);
}
-
-
if( ColorFound >= 0 ) {
- LR->setColor(ColorFound); // first color found in preffered order
+ LR->setColor(ColorFound); // first color found in prefered order
LR->markForSaveAcrossCalls();
} else {
// we are here because no color could be found
int SparcFloatRegClass::findFloatColor(const LiveRange *LR,
unsigned Start, unsigned End,
- bool IsColorUsedArr[] ) const {
+ vector<bool> &IsColorUsedArr) const {
bool ColorFound = false;
unsigned c;
- if (LR->getTypeID() == Type::DoubleTyID) {
+ if (LR->getType() == Type::DoubleTy) {
// find first unused color for a double
for (c=Start; c < End ; c+= 2)
if (!IsColorUsedArr[c] && !IsColorUsedArr[c+1])
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