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misched: initialize BB

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155226 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Trick 2012-04-20 20:05:21 +00:00
parent d4786e221c
commit 918f38ab24
1 changed files with 4 additions and 2 deletions
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6
lib/CodeGen/ScheduleDAGInstrs.cpp
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@ -126,7 +126,8 @@ static const Value *getUnderlyingObjectForInstr(const MachineInstr *MI,
return 0;
}
void ScheduleDAGInstrs::startBlock(MachineBasicBlock *BB) {
void ScheduleDAGInstrs::startBlock(MachineBasicBlock *bb) {
BB = bb;
LoopRegs.Deps.clear();
if (MachineLoop *ML = MLI.getLoopFor(BB))
if (BB == ML->getLoopLatch())
@ -134,6 +135,7 @@ void ScheduleDAGInstrs::startBlock(MachineBasicBlock *BB) {
}
void ScheduleDAGInstrs::finishBlock() {
BB = 0;
// Nothing to do.
}
@ -159,7 +161,7 @@ void ScheduleDAGInstrs::enterRegion(MachineBasicBlock *bb,
MachineBasicBlock::iterator begin,
MachineBasicBlock::iterator end,
unsigned endcount) {
BB = bb;
assert(bb == BB && "startBlock should set BB");
RegionBegin = begin;
RegionEnd = end;
EndIndex = endcount;