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Increment use count of new virtuals created during PHI elimination.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36233 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-04-18 00:36:11 +00:00
parent b1b2f0bc44
commit 3fefc182a0
1 changed files with 3 additions and 0 deletions
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lib/CodeGen/PHIElimination.cpp
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@ -138,6 +138,9 @@ void PNE::LowerAtomicPHINode(MachineBasicBlock &MBB,
if (LV) {
MachineInstr *PHICopy = prior(AfterPHIsIt);
// Increment use count of the newly created virtual register.
LV->getVarInfo(IncomingReg).NumUses++;
// Add information to LiveVariables to know that the incoming value is
// killed. Note that because the value is defined in several places (once
// each for each incoming block), the "def" block and instruction fields