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* Eliminate `using' directive 

* Fix order of #includes
* Make code layout more consistent
* Eliminate extraneous whitespace and comment-lines

llvm-svn: 9433
This commit is contained in:
Misha Brukman 2003-10-23 18:10:02 +00:00
parent dc07775d58
commit 88df876012
2 changed files with 26 additions and 52 deletions
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5
llvm/lib/CodeGen/RegAlloc/InterferenceGraph.cpp
View File

@ -11,12 +11,11 @@
//
//===----------------------------------------------------------------------===//
#include "RegAllocCommon.h"
#include "InterferenceGraph.h"
#include "IGNode.h"
#include "InterferenceGraph.h"
#include "RegAllocCommon.h"
#include "Support/STLExtras.h"
#include <algorithm>
using std::cerr;
// for asserting this IG node is infact in the IGNodeList of this class
inline static void assertIGNode(const InterferenceGraph *IG,

73
llvm/lib/CodeGen/RegAlloc/RegClass.cpp
View File

@ -11,9 +11,9 @@
//
//===----------------------------------------------------------------------===//
#include "RegClass.h"
#include "RegAllocCommon.h"
#include "IGNode.h"
#include "RegAllocCommon.h"
#include "RegClass.h"
#include "llvm/Target/TargetRegInfo.h"
//----------------------------------------------------------------------------
@ -26,7 +26,7 @@ RegClass::RegClass(const Function *M,
: Meth(M), MRI(_MRI_), MRC(_MRC_),
RegClassID( _MRC_->getRegClassID() ),
IG(this), IGNodeStack() {
if( DEBUG_RA >= RA_DEBUG_Interference)
if (DEBUG_RA >= RA_DEBUG_Interference)
std::cerr << "Created Reg Class: " << RegClassID << "\n";
IsColorUsedArr.resize(MRC->getNumOfAllRegs());
@ -39,23 +39,19 @@ RegClass::RegClass(const Function *M,
//----------------------------------------------------------------------------
void RegClass::colorAllRegs()
{
if(DEBUG_RA >= RA_DEBUG_Coloring)
if (DEBUG_RA >= RA_DEBUG_Coloring)
std::cerr << "Coloring IG of reg class " << RegClassID << " ...\n";
// pre-color IGNodes
pushAllIGNodes(); // push all IG Nodes
unsigned int StackSize = IGNodeStack.size();
IGNode *CurIGNode;
// for all LRs on stack
for( unsigned int IGN=0; IGN < StackSize; IGN++) {
for (unsigned int IGN=0; IGN < StackSize; IGN++) {
CurIGNode = IGNodeStack.top(); // pop the IGNode on top of stack
IGNodeStack.pop();
colorIGNode (CurIGNode); // color it
}
}
@ -73,13 +69,13 @@ void RegClass::pushAllIGNodes()
// push non-constrained IGNodes
bool PushedAll = pushUnconstrainedIGNodes();
if( DEBUG_RA >= RA_DEBUG_Coloring) {
if (DEBUG_RA >= RA_DEBUG_Coloring) {
std::cerr << " Puhsed all-unconstrained IGNodes. ";
if( PushedAll ) std::cerr << " No constrained nodes left.";
std::cerr << "\n";
}
if( PushedAll ) // if NO constrained nodes left
if (PushedAll) // if NO constrained nodes left
return;
@ -89,24 +85,15 @@ void RegClass::pushAllIGNodes()
do {
//get node with min spill cost
//
IGNode *IGNodeSpill = getIGNodeWithMinSpillCost();
// push that node on to stack
//
IGNodeStack.push(IGNodeSpill);
// set its OnStack flag and decrement degree of neighs
//
IGNodeSpill->pushOnStack();
// now push NON-constrained ones, if any
//
NeedMoreSpills = !pushUnconstrainedIGNodes();
if (DEBUG_RA >= RA_DEBUG_Coloring)
std::cerr << "\nConstrained IG Node found !@!" << IGNodeSpill->getIndex();
} while(NeedMoreSpills); // repeat until we have pushed all
}
@ -127,21 +114,21 @@ bool RegClass::pushUnconstrainedIGNodes()
bool pushedall = true;
// a pass over IGNodeList
for( unsigned i =0; i < IGNodeListSize; i++) {
for (unsigned i =0; i < IGNodeListSize; i++) {
// get IGNode i from IGNodeList
IGNode *IGNode = IG.getIGNodeList()[i];
if( !IGNode ) // can be null due to merging
if (!IGNode ) // can be null due to merging
continue;
// if already pushed on stack, continue. This can happen since this
// method can be called repeatedly until all constrained nodes are
// pushed
if( IGNode->isOnStack() )
if (IGNode->isOnStack() )
continue;
// if the degree of IGNode is lower
if( (unsigned) IGNode->getCurDegree() < MRC->getNumOfAvailRegs()) {
if ((unsigned) IGNode->getCurDegree() < MRC->getNumOfAvailRegs()) {
IGNodeStack.push( IGNode ); // push IGNode on to the stack
IGNode->pushOnStack(); // set OnStack and dec deg of neighs
@ -163,9 +150,7 @@ bool RegClass::pushUnconstrainedIGNodes()
//----------------------------------------------------------------------------
// Get the IGNode with the minimum spill cost
//----------------------------------------------------------------------------
IGNode * RegClass::getIGNodeWithMinSpillCost()
{
IGNode * RegClass::getIGNodeWithMinSpillCost() {
unsigned int IGNodeListSize = IG.getIGNodeList().size();
double MinSpillCost = 0;
IGNode *MinCostIGNode = NULL;
@ -173,45 +158,37 @@ IGNode * RegClass::getIGNodeWithMinSpillCost()
// pass over IGNodeList to find the IGNode with minimum spill cost
// among all IGNodes that are not yet pushed on to the stack
//
for( unsigned int i =0; i < IGNodeListSize; i++) {
for (unsigned int i =0; i < IGNodeListSize; i++) {
IGNode *IGNode = IG.getIGNodeList()[i];
if( ! IGNode ) // can be null due to merging
if (!IGNode) // can be null due to merging
continue;
if( ! IGNode->isOnStack() ) {
if (!IGNode->isOnStack()) {
double SpillCost = (double) IGNode->getParentLR()->getSpillCost() /
(double) (IGNode->getCurDegree() + 1);
if( isFirstNode ) { // for the first IG node
if (isFirstNode) { // for the first IG node
MinSpillCost = SpillCost;
MinCostIGNode = IGNode;
isFirstNode = false;
}
else if( MinSpillCost > SpillCost) {
} else if (MinSpillCost > SpillCost) {
MinSpillCost = SpillCost;
MinCostIGNode = IGNode;
}
}
}
assert( MinCostIGNode && "No IGNode to spill");
assert (MinCostIGNode && "No IGNode to spill");
return MinCostIGNode;
}
//----------------------------------------------------------------------------
// Color the IGNode using the machine specific code.
//----------------------------------------------------------------------------
void RegClass::colorIGNode(IGNode *const Node)
{
if( ! Node->hasColor() ) { // not colored as an arg etc.
void RegClass::colorIGNode(IGNode *const Node) {
if (! Node->hasColor()) { // not colored as an arg etc.
// init all elements of to IsColorUsedAr false;
clearColorsUsed();
@ -242,22 +219,20 @@ void RegClass::colorIGNode(IGNode *const Node)
// call the target specific code for coloring
//
MRC->colorIGNode(Node, IsColorUsedArr);
}
else {
if( DEBUG_RA >= RA_DEBUG_Coloring) {
} else {
if (DEBUG_RA >= RA_DEBUG_Coloring) {
std::cerr << " Node " << Node->getIndex();
std::cerr << " already colored with color " << Node->getColor() << "\n";
}
}
if( !Node->hasColor() ) {
if( DEBUG_RA >= RA_DEBUG_Coloring) {
if (!Node->hasColor() ) {
if (DEBUG_RA >= RA_DEBUG_Coloring) {
std::cerr << " Node " << Node->getIndex();
std::cerr << " - could not find a color (needs spilling)\n";
}
}
}
void RegClass::printIGNodeList() const {