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Use a SparseSet instead of a BitVector for UsedInInstr in RAFast.

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This is just as fast, and it makes it possible to avoid leaking the
UsedPhysRegs BitVector implementation through
MachineRegisterInfo::addPhysRegsUsed().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166083 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2012-10-17 01:37:59 +00:00
parent e9403c1fd6
commit d7ea7d5cd7
2 changed files with 30 additions and 27 deletions
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4
include/llvm/CodeGen/MachineRegisterInfo.h
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@@ -377,10 +377,6 @@ public:
/// This should only be called during and after register allocation.
void setPhysRegUsed(unsigned Reg) { UsedPhysRegs.set(Reg); }
/// addPhysRegsUsed - Mark the specified registers used in this function.
/// This should only be called during and after register allocation.
void addPhysRegsUsed(const BitVector &Regs) { UsedPhysRegs |= Regs; }
/// addPhysRegsUsedFromRegMask - Mark any registers not in RegMask as used.
/// This corresponds to the bit mask attached to register mask operands.
void addPhysRegsUsedFromRegMask(const uint32_t *RegMask) {