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RegAllocFast: Move vector to class level to avoid reallocation; NFC 

llvm-svn: 312845
This commit is contained in:
Matthias Braun 2017-09-09 00:52:45 +00:00
parent a5225e8cb0
commit a09d18deb0
1 changed files with 5 additions and 2 deletions
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7
llvm/lib/CodeGen/RegAllocFast.cpp
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@ -112,6 +112,9 @@ namespace {
// PhysRegState - One of the RegState enums, or a virtreg.
std::vector<unsigned> PhysRegState;
SmallVector<unsigned, 16> VirtDead;
SmallVector<MachineInstr*, 32> Coalesced;
// Set of register units.
typedef SparseSet<unsigned> UsedInInstrSet;
@ -810,8 +813,8 @@ void RAFast::AllocateBasicBlock() {
if (MRI->isAllocatable(LI.PhysReg))
definePhysReg(*MII, LI.PhysReg, regReserved);
SmallVector<unsigned, 8> VirtDead;
SmallVector<MachineInstr*, 32> Coalesced;
VirtDead.clear();
Coalesced.clear();
// Otherwise, sequentially allocate each instruction in the MBB.
while (MII != MBB->end()) {