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Reserve a goodly amount of room for the vectors.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108448 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2010-07-15 19:41:20 +00:00
parent 20d256e479
commit e4a4147c87
1 changed files with 4 additions and 2 deletions
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6
lib/CodeGen/AggressiveAntiDepBreaker.cpp
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@ -42,6 +42,9 @@ DebugMod("agg-antidep-debugmod",
AggressiveAntiDepState::AggressiveAntiDepState(const unsigned TargetRegs,
MachineBasicBlock *BB) :
NumTargetRegs(TargetRegs), GroupNodes(TargetRegs, 0) {
GroupNodeIndices.reserve(TargetRegs);
KillIndices.reserve(TargetRegs);
DefIndices.reserve(TargetRegs);
const unsigned BBSize = BB->size();
for (unsigned i = 0; i < NumTargetRegs; ++i) {
@ -54,8 +57,7 @@ AggressiveAntiDepState::AggressiveAntiDepState(const unsigned TargetRegs,
}
}
unsigned AggressiveAntiDepState::GetGroup(unsigned Reg)
{
unsigned AggressiveAntiDepState::GetGroup(unsigned Reg) {
unsigned Node = GroupNodeIndices[Reg];
while (GroupNodes[Node] != Node)
Node = GroupNodes[Node];