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RAGreedy: Keep track of allocated PhysRegs internally

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Do not use MachineRegisterInfo::setPhysRegUsed()/isPhysRegUsed()
anymore. This bitset changes function-global state and is set by the
VirtRegRewriter anyway.
Simply use a bitvector private to RAGreedy.

Differential Revision: http://reviews.llvm.org/D10910

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242169 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matthias Braun
2015-07-14 17:38:17 +00:00
parent 582194d3b8
commit 65a4053af8
4 changed files with 40 additions and 18 deletions
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5
include/llvm/CodeGen/LiveIntervalUnion.h
View File

@@ -203,6 +203,11 @@ public:
assert(idx < Size && "idx out of bounds");
return LIUs[idx];
}
const LiveIntervalUnion& operator[](unsigned Idx) const {
assert(Idx < Size && "Idx out of bounds");
return LIUs[Idx];
}
};
};

3
include/llvm/CodeGen/LiveRegMatrix.h
View File

@@ -114,6 +114,9 @@ public:
/// the assignment and updates VirtRegMap accordingly.
void unassign(LiveInterval &VirtReg);
/// Returns true if the given \p PhysReg has any live intervals assigned.
bool isPhysRegUsed(unsigned PhysReg) const;
//===--------------------------------------------------------------------===//
// Low-level interface.
//===--------------------------------------------------------------------===//