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mi-sched: Don't call MBB.size() in initSUnits. The driver already has instr count.

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This fixes a pathological compile time problem with very large blocks
and lots of scheduling boundaries.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@189116 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Trick
2013-08-23 17:48:33 +00:00
parent f89c749870
commit d2763f6ce6
6 changed files with 34 additions and 25 deletions
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3
lib/CodeGen/DFAPacketizer.cpp
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@ -160,7 +160,8 @@ void VLIWPacketizerList::PacketizeMIs(MachineBasicBlock *MBB,
MachineBasicBlock::iterator EndItr) {
assert(VLIWScheduler && "VLIW Scheduler is not initialized!");
VLIWScheduler->startBlock(MBB);
VLIWScheduler->enterRegion(MBB, BeginItr, EndItr, MBB->size());
VLIWScheduler->enterRegion(MBB, BeginItr, EndItr,
std::distance(BeginItr, EndItr));
VLIWScheduler->schedule();
// Generate MI -> SU map.