-//===-- SparcRegClassInfo.cpp - Register class def'ns for Sparc -----------===//
+//===-- SparcV9RegClassInfo.cpp - Register class def'ns for SparcV9 -------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
//
-// This file defines the register classes used by the Sparc target description.
+// This file defines the methods used by the SparcV9 register allocator
+// to pick registers of various classes. Most of this code should be
+// considered part of the register allocator.
//
//===----------------------------------------------------------------------===//
-#include "SparcRegClassInfo.h"
-#include "SparcInternals.h"
#include "llvm/Type.h"
-#include "../../CodeGen/RegAlloc/RegAllocCommon.h" // FIXME!
+#include "SparcV9RegClassInfo.h"
+#include "SparcV9Internals.h"
+#include "SparcV9RegInfo.h"
+#include "RegAlloc/RegAllocCommon.h"
+#include "RegAlloc/IGNode.h"
+#include <iostream>
+
+namespace llvm {
//-----------------------------------------------------------------------------
// Int Register Class - method for coloring a node in the interference graph.
// If both above fail, spill.
//
//-----------------------------------------------------------------------------
-void SparcIntRegClass::colorIGNode(IGNode * Node,
+void SparcV9IntRegClass::colorIGNode(IGNode * Node,
const std::vector<bool> &IsColorUsedArr) const
{
LiveRange *LR = Node->getParentLR();
- if (DEBUG_RA) {
- std::cerr << "\nColoring LR [CallInt=" << LR->isCallInterference() <<"]:";
- printSet(*LR);
- }
+ if (DEBUG_RA)
+ std::cerr << "\nColoring LR [CallInt=" << LR->isCallInterference() <<"]:"
+ << *LR << "\n";
if (LR->hasSuggestedColor()) {
unsigned SugCol = LR->getSuggestedColor();
std::cerr << "\n Couldn't alloc Sug col - LR volatile & calls interf";
}
} else if (DEBUG_RA) { // can't allocate the suggested col
- std::cerr << "\n Could NOT allocate the suggested color (already used) ";
- printSet(*LR); std::cerr << "\n";
+ std::cerr << "\n Could NOT allocate the suggested color (already used) "
+ << *LR << "\n";
}
}
//if this Node is between calls
if (! LR->isCallInterference()) {
// start with volatiles (we can allocate volatiles safely)
- SearchStart = SparcIntRegClass::StartOfAllRegs;
+ SearchStart = SparcV9IntRegClass::StartOfAllRegs;
} else {
// start with non volatiles (no non-volatiles)
- SearchStart = SparcIntRegClass::StartOfNonVolatileRegs;
+ SearchStart = SparcV9IntRegClass::StartOfNonVolatileRegs;
}
unsigned c=0; // color
// find first unused color
- for (c=SearchStart; c < SparcIntRegClass::NumOfAvailRegs; c++) {
+ for (c=SearchStart; c < SparcV9IntRegClass::NumOfAvailRegs; c++) {
if (!IsColorUsedArr[c]) {
ColorFound = true;
break;
}
if (ColorFound) {
- LR->setColor(c); // first color found in preffered order
+ LR->setColor(c); // first color found in preferred order
if (DEBUG_RA) std::cerr << "\n Colored after first search with col " << c;
}
//
else if (LR->isCallInterference()) {
// start from 0 - try to find even a volatile this time
- SearchStart = SparcIntRegClass::StartOfAllRegs;
+ SearchStart = SparcV9IntRegClass::StartOfAllRegs;
// find first unused volatile color
- for(c=SearchStart; c < SparcIntRegClass::StartOfNonVolatileRegs; c++) {
+ for(c=SearchStart; c < SparcV9IntRegClass::StartOfNonVolatileRegs; c++) {
if (! IsColorUsedArr[c]) {
ColorFound = true;
break;
// get the live range corresponding to live var
// since LR span across calls, must save across calls
//
- LR->markForSaveAcrossCalls();
if (DEBUG_RA)
std::cerr << "\n Colored after SECOND search with col " << c;
}
// Note: The third name (%ccr) is essentially an assembly mnemonic and
// depends solely on the opcode, so the name can be chosen in EmitAssembly.
//-----------------------------------------------------------------------------
-void SparcIntCCRegClass::colorIGNode(IGNode *Node,
+void SparcV9IntCCRegClass::colorIGNode(IGNode *Node,
const std::vector<bool> &IsColorUsedArr) const
{
if (Node->getNumOfNeighbors() > 0)
#ifndef NDEBUG
// Let's just make sure values of two different types have not been
// coalesced into this LR.
- for (ValueSet::const_iterator I=ccLR->begin(), E=ccLR->end(); I!=E; ++I) {
+ for (LiveRange::const_iterator I=ccLR->begin(), E=ccLR->end(); I!=E; ++I) {
const Type* ccType = (*I)->getType();
assert((ccReg == xcc && (isa<PointerType>(ccType)
|| ccType == Type::LongTy)) ||
}
+void SparcV9FloatCCRegClass::colorIGNode(IGNode *Node,
+ const std::vector<bool> &IsColorUsedArr) const {
+ for(unsigned c = 0; c != 4; ++c)
+ if (!IsColorUsedArr[c]) { // find unused color
+ Node->setColor(c);
+ return;
+ }
+
+ Node->getParentLR()->markForSpill();
+}
+
+
+
//-----------------------------------------------------------------------------
// Float Register Class - method for coloring a node in the interference graph.
//
// If a color is still not fond, mark for spilling
//
//----------------------------------------------------------------------------
-void SparcFloatRegClass::colorIGNode(IGNode * Node,
+void SparcV9FloatRegClass::colorIGNode(IGNode * Node,
const std::vector<bool> &IsColorUsedArr) const
{
LiveRange *LR = Node->getParentLR();
//
// FIXME: This is old code that is no longer needed. Temporarily converting
// it into a big assertion just to check that the replacement logic
- // (invoking SparcFloatRegClass::markColorsUsed() directly from
+ // (invoking SparcV9FloatRegClass::markColorsUsed() directly from
// RegClass::colorIGNode) works correctly.
//
// In fact, this entire function should be identical to
- // SparcIntRegClass::colorIGNode(), and perhaps can be
+ // SparcV9IntRegClass::colorIGNode(), and perhaps can be
// made into a general case in CodeGen/RegAlloc/RegClass.cpp.
//
unsigned NumNeighbors = Node->getNumOfNeighbors(); // total # of neighbors
IGNode *NeighIGNode = Node->getAdjIGNode(n);
LiveRange *NeighLR = NeighIGNode->getParentLR();
- if (NeighLR->hasColor() &&
- NeighLR->getType() == Type::DoubleTy) {
- assert(IsColorUsedArr[ NeighLR->getColor() ] &&
- IsColorUsedArr[ NeighLR->getColor()+1 ]);
+ if (NeighLR->hasColor()) {
+ assert(IsColorUsedArr[ NeighLR->getColor() ]);
+ if (NeighLR->getType() == Type::DoubleTy)
+ assert(IsColorUsedArr[ NeighLR->getColor()+1 ]);
} else if (NeighLR->hasSuggestedColor() &&
NeighLR-> isSuggestedColorUsable() ) {
// **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()
+ //- see SparcV9IntRegClass::colorIGNode()
//
if( LR->hasSuggestedColor() ) {
if( ! IsColorUsedArr[ LR->getSuggestedColor() ] ) {
LR->setColor( LR->getSuggestedColor() );
return;
} else if (DEBUG_RA) { // can't allocate the suggested col
- std::cerr << " Could NOT allocate the suggested color for LR ";
- printSet(*LR); std::cerr << "\n";
+ std::cerr << " Could NOT allocate the suggested color for LR " << *LR
+ << "\n";
}
}
return;
} else {
- // if we didn't find a color becuase the LR was single precision or
+ // if we didn't find a color because the LR was single precision or
// all f32-f63 range is filled, we try to allocate a register from
// the f0 - f31 region
//if this Node is between calls (i.e., no call interferences )
if (! isCallInterf) {
// start with volatiles (we can allocate volatiles safely)
- SearchStart = SparcFloatRegClass::StartOfAllRegs;
+ SearchStart = SparcV9FloatRegClass::StartOfAllRegs;
} else {
// start with non volatiles (no non-volatiles)
- SearchStart = SparcFloatRegClass::StartOfNonVolatileRegs;
+ SearchStart = SparcV9FloatRegClass::StartOfNonVolatileRegs;
}
ColorFound = findFloatColor(LR, SearchStart, 32, IsColorUsedArr);
// We are here because there is a call interference and no non-volatile
// color could be found.
// Now try to allocate even a volatile color
- ColorFound = findFloatColor(LR, SparcFloatRegClass::StartOfAllRegs,
- SparcFloatRegClass::StartOfNonVolatileRegs,
+ ColorFound = findFloatColor(LR, SparcV9FloatRegClass::StartOfAllRegs,
+ SparcV9FloatRegClass::StartOfNonVolatileRegs,
IsColorUsedArr);
}
if (ColorFound >= 0) {
- LR->setColor(ColorFound); // first color found in prefered order
- LR->markForSaveAcrossCalls();
+ LR->setColor(ColorFound); // first color found in preferred order
} else {
// we are here because no color could be found
LR->markForSpill(); // no color found - must spill
// for double-precision registers.
//-----------------------------------------------------------------------------
-void SparcFloatRegClass::markColorsUsed(unsigned RegInClass,
+void SparcV9FloatRegClass::markColorsUsed(unsigned RegInClass,
int UserRegType,
int RegTypeWanted,
std::vector<bool> &IsColorUsedArr) const
{
- if (UserRegType == UltraSparcRegInfo::FPDoubleRegType ||
- RegTypeWanted == UltraSparcRegInfo::FPDoubleRegType) {
+ if (UserRegType == SparcV9RegInfo::FPDoubleRegType ||
+ RegTypeWanted == SparcV9RegInfo::FPDoubleRegType) {
// This register is used as or is needed as a double-precision reg.
// We need to mark the [even,odd] pair corresponding to this reg.
// Get the even numbered register corresponding to this reg.
// for double-precision registers
// It returns -1 if no unused color is found.
//
-int SparcFloatRegClass::findUnusedColor(int RegTypeWanted,
+int SparcV9FloatRegClass::findUnusedColor(int RegTypeWanted,
const std::vector<bool> &IsColorUsedArr) const
{
- if (RegTypeWanted == UltraSparcRegInfo::FPDoubleRegType) {
+ if (RegTypeWanted == SparcV9RegInfo::FPDoubleRegType) {
unsigned NC = 2 * this->getNumOfAvailRegs();
assert(IsColorUsedArr.size() == NC && "Invalid colors-used array");
for (unsigned c = 0; c < NC; c+=2)
// type of the Node (i.e., float/double)
//-----------------------------------------------------------------------------
-int SparcFloatRegClass::findFloatColor(const LiveRange *LR,
+int SparcV9FloatRegClass::findFloatColor(const LiveRange *LR,
unsigned Start,
unsigned End,
const std::vector<bool> &IsColorUsedArr) const
for (unsigned c=Start; c < End ; c+= 2)
if (!IsColorUsedArr[c]) {
assert(!IsColorUsedArr[c+1] &&
- "Incorrect marking of used regs for Sparc FP double!");
+ "Incorrect marking of used regs for SparcV9 FP double!");
return c;
}
} else {
return -1;
}
+
+} // End llvm namespace
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