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Delete getMultiUseBlocks and splitSingleBlocks.

Browse Source 
These functions are no longer used, and they are easily replaced with a
loop calling shouldSplitSingleBlock and splitSingleBlock.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136993 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2011-08-05 22:52:17 +00:00
parent b3ef7f6b97
commit 75e28f74b0
2 changed files with 0 additions and 38 deletions
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29
lib/CodeGen/SplitKit.cpp
View File

@ -1105,22 +1105,6 @@ bool SplitAnalysis::shouldSplitSingleBlock(const BlockInfo &BI,
return isOriginalEndpoint(BI.FirstInstr);
}
/// getMultiUseBlocks - if CurLI has more than one use in a basic block, it
/// may be an advantage to split CurLI for the duration of the block.
bool SplitAnalysis::getMultiUseBlocks(BlockPtrSet &Blocks) {
// If CurLI is local to one block, there is no point to splitting it.
if (UseBlocks.size() <= 1)
return false;
// Add blocks with multiple uses.
for (unsigned i = 0, e = UseBlocks.size(); i != e; ++i) {
const BlockInfo &BI = UseBlocks[i];
if (BI.FirstInstr == BI.LastInstr)
continue;
Blocks.insert(BI.MBB);
}
return !Blocks.empty();
}
void SplitEditor::splitSingleBlock(const SplitAnalysis::BlockInfo &BI) {
openIntv();
SlotIndex LastSplitPoint = SA.getLastSplitPoint(BI.MBB->getNumber());
@ -1136,19 +1120,6 @@ void SplitEditor::splitSingleBlock(const SplitAnalysis::BlockInfo &BI) {
}
}
/// splitSingleBlocks - Split CurLI into a separate live interval inside each
/// basic block in Blocks.
void SplitEditor::splitSingleBlocks(const SplitAnalysis::BlockPtrSet &Blocks) {
DEBUG(dbgs() << " splitSingleBlocks for " << Blocks.size() << " blocks.\n");
ArrayRef<SplitAnalysis::BlockInfo> UseBlocks = SA.getUseBlocks();
for (unsigned i = 0; i != UseBlocks.size(); ++i) {
const SplitAnalysis::BlockInfo &BI = UseBlocks[i];
if (Blocks.count(BI.MBB))
splitSingleBlock(BI);
}
finish();
}
//===----------------------------------------------------------------------===//
// Global Live Range Splitting Support

9
lib/CodeGen/SplitKit.h
View File

@ -194,11 +194,6 @@ public:
/// @param BI The block to be isolated.
/// @param SingleInstrs True when single instructions should be isolated.
bool shouldSplitSingleBlock(const BlockInfo &BI, bool SingleInstrs) const;
/// getMultiUseBlocks - Add basic blocks to Blocks that may benefit from
/// having CurLI split to a new live interval. Return true if Blocks can be
/// passed to SplitEditor::splitSingleBlocks.
bool getMultiUseBlocks(BlockPtrSet &Blocks);
};
@ -433,10 +428,6 @@ public:
/// split, and doesn't call finish().
void splitSingleBlock(const SplitAnalysis::BlockInfo &BI);
/// splitSingleBlocks - Split CurLI into a separate live interval inside each
/// basic block in Blocks.
void splitSingleBlocks(const SplitAnalysis::BlockPtrSet &Blocks);
/// splitLiveThroughBlock - Split CurLI in the given block such that it
/// enters the block in IntvIn and leaves it in IntvOut. There may be uses in
/// the block, but they will be ignored when placing split points.