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Add MachineBasicBlock2IndexFunctor. This is useful for densemaps from

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MachineBasicBlocks to an arbitrary type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16068 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alkis Evlogimenos 2004-08-27 04:00:26 +00:00
parent fc093bd081
commit 6177d3f448
1 changed files with 10 additions and 0 deletions
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10
include/llvm/CodeGen/MachineBasicBlock.h
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@ -220,6 +220,16 @@ private: // Methods used to maintain doubly linked list of blocks...
}
};
// This is useful when building DenseMaps keyed on MachineBasicBlocks
struct MachineBasicBlock2IndexFunctor
: std::unary_function<const MachineBasicBlock*, unsigned> {
unsigned operator()(const MachineBasicBlock* MBB) const {
assert(MBB->getNumber() != -1 &&
"MachineBasicBlock does not belong to a MachineFunction");
return MBB->getNumber();
}
};
//===--------------------------------------------------------------------===//
// GraphTraits specializations for machine basic block graphs (machine-CFGs)