forked from OSchip/llvm-project
[JumpTables] Let targets decide which switch instructions are suitable
This commits the non-controversial part of https://reviews.llvm.org/D41029 (making the queries virtual). The PPC-specific portion of this will be committed in a subsequent patch once some of the finer points are ironed out. llvm-svn: 321182
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@ -824,7 +824,7 @@ public:
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/// also combined within this function. Currently, the minimum size check is
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/// performed in findJumpTable() in SelectionDAGBuiler and
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/// getEstimatedNumberOfCaseClusters() in BasicTTIImpl.
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bool isSuitableForJumpTable(const SwitchInst *SI, uint64_t NumCases,
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virtual bool isSuitableForJumpTable(const SwitchInst *SI, uint64_t NumCases,
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uint64_t Range) const {
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const bool OptForSize = SI->getParent()->getParent()->optForSize();
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const unsigned MinDensity = getMinimumJumpTableDensity(OptForSize);
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@ -1276,7 +1276,7 @@ public:
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}
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/// Return lower limit for number of blocks in a jump table.
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unsigned getMinimumJumpTableEntries() const;
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virtual unsigned getMinimumJumpTableEntries() const;
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/// Return lower limit of the density in a jump table.
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unsigned getMinimumJumpTableDensity(bool OptForSize) const;
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