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Added code so that colorIGNode does not unnecessarily reserve unusable

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Suggested colors for neighbors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@921 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ruchira Sasanka 2001-10-19 21:41:16 +00:00
parent 0e62aa6d14
commit b49865fa02
2 changed files with 18 additions and 8 deletions
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25
lib/Target/SparcV9/SparcV9RegClassInfo.cpp
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@ -31,9 +31,13 @@ void SparcIntRegClass::colorIGNode(IGNode * Node, bool IsColorUsedArr[]) const
if( NeighLR->hasColor() ) // if has a color
IsColorUsedArr[ NeighLR->getColor() ] = true; // record that color
else if( NeighLR->hasSuggestedColor() ) // or has a suggest col
IsColorUsedArr[ NeighLR->getSuggestedColor() ] = true;
else if( NeighLR->hasSuggestedColor() ) {
// if the neighbout can use the suggested color
if( NeighLR-> isSuggestedColorUsable() )
IsColorUsedArr[ NeighLR->getSuggestedColor() ] = true;
}
}
if( DEBUG_RA ) {
@ -49,7 +53,7 @@ void SparcIntRegClass::colorIGNode(IGNode * Node, bool IsColorUsedArr[]) const
if( ! IsColorUsedArr[ SugCol ] ) {
if(! (isRegVolatile( SugCol ) && LR->isCallInterference()) ) {
if( LR->isSuggestedColorUsable() ) {
// if the suggested color is volatile, we should use it only if
// there are no call interferences. Otherwise, it will get spilled.
@ -205,9 +209,16 @@ void SparcFloatRegClass::colorIGNode(IGNode * Node,bool IsColorUsedArr[]) const
IsColorUsedArr[ (NeighLR->getColor()) + 1 ] = true;
}
else if( NeighLR->hasSuggestedColor() ) { // if neigh has sugg color
IsColorUsedArr[ NeighLR->getSuggestedColor() ] = true;
if( NeighLR->getTypeID() == Type::DoubleTyID )
IsColorUsedArr[ (NeighLR->getSuggestedColor()) + 1 ] = true;
if( NeighLR-> isSuggestedColorUsable() ) {
// if the neighbout can use the suggested color
IsColorUsedArr[ NeighLR->getSuggestedColor() ] = true;
if( NeighLR->getTypeID() == Type::DoubleTyID )
IsColorUsedArr[ (NeighLR->getSuggestedColor()) + 1 ] = true;
}
}
}

1
lib/Target/SparcV9/SparcV9RegInfo.cpp
View File

@ -61,7 +61,6 @@ void UltraSparcRegInfo::suggestReg4CallAddr(const MachineInstr * CallMI) const
MachineOperand & MO = ( MachineOperand &) CallMI->getOperand(2);
MO.setRegForValue( getUnifiedRegNum( IntRegClassID,SparcIntRegOrder::o7) );
}