diff options
author | Roman Divacky <rdivacky@FreeBSD.org> | 2010-03-06 09:22:29 +0000 |
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committer | Roman Divacky <rdivacky@FreeBSD.org> | 2010-03-06 09:22:29 +0000 |
commit | f5a3459adfde823bc7617f8ecfdd9fbc5a1ffadf (patch) | |
tree | 542734eaa7870f95912cbaebccb87dbec0c20b4f /lib/CodeGen/PHIElimination.cpp | |
parent | 67a71b3184ce20a901e874d0ee25e01397dd87ef (diff) |
Notes
Diffstat (limited to 'lib/CodeGen/PHIElimination.cpp')
-rw-r--r-- | lib/CodeGen/PHIElimination.cpp | 31 |
1 files changed, 0 insertions, 31 deletions
diff --git a/lib/CodeGen/PHIElimination.cpp b/lib/CodeGen/PHIElimination.cpp index bdfd448acdb2..8bbe0a725286 100644 --- a/lib/CodeGen/PHIElimination.cpp +++ b/lib/CodeGen/PHIElimination.cpp @@ -443,34 +443,3 @@ MachineBasicBlock *PHIElimination::SplitCriticalEdge(MachineBasicBlock *A, return NMBB; } - -unsigned -PHIElimination::PHINodeTraits::getHashValue(const MachineInstr *MI) { - if (!MI || MI==getEmptyKey() || MI==getTombstoneKey()) - return DenseMapInfo<MachineInstr*>::getHashValue(MI); - unsigned hash = 0; - for (unsigned ni = 1, ne = MI->getNumOperands(); ni != ne; ni += 2) - hash = hash*37 + DenseMapInfo<BBVRegPair>:: - getHashValue(BBVRegPair(MI->getOperand(ni+1).getMBB()->getNumber(), - MI->getOperand(ni).getReg())); - return hash; -} - -bool PHIElimination::PHINodeTraits::isEqual(const MachineInstr *LHS, - const MachineInstr *RHS) { - const MachineInstr *EmptyKey = getEmptyKey(); - const MachineInstr *TombstoneKey = getTombstoneKey(); - if (!LHS || !RHS || LHS==EmptyKey || RHS==EmptyKey || - LHS==TombstoneKey || RHS==TombstoneKey) - return LHS==RHS; - - unsigned ne = LHS->getNumOperands(); - if (ne != RHS->getNumOperands()) - return false; - // Ignore operand 0, the defined register. - for (unsigned ni = 1; ni != ne; ni += 2) - if (LHS->getOperand(ni).getReg() != RHS->getOperand(ni).getReg() || - LHS->getOperand(ni+1).getMBB() != RHS->getOperand(ni+1).getMBB()) - return false; - return true; -} |