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First chunk of MachineInstr bundle support.

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1. Added opcode BUNDLE
2. Taught MachineInstr class to deal with bundled MIs
3. Changed MachineBasicBlock iterator to skip over bundled MIs; added an iterator to walk all the MIs
4. Taught MachineBasicBlock methods about bundled MIs


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145975 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2011-12-06 22:12:01 +00:00
parent 3d5d8f6b76
commit 7c2a4a30e0
19 changed files with 369 additions and 69 deletions
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lib/CodeGen/LiveVariables.cpp
+1 -1
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@@ -754,7 +754,7 @@ void LiveVariables::addNewBlock(MachineBasicBlock *BB,
const unsigned NumNew = BB->getNumber();
// All registers used by PHI nodes in SuccBB must be live through BB.
for (MachineBasicBlock::const_iterator BBI = SuccBB->begin(),
for (MachineBasicBlock::iterator BBI = SuccBB->begin(),
BBE = SuccBB->end(); BBI != BBE && BBI->isPHI(); ++BBI)
for (unsigned i = 1, e = BBI->getNumOperands(); i != e; i += 2)
if (BBI->getOperand(i+1).getMBB() == BB)