diff options
Diffstat (limited to 'lib/CodeGen/BranchFolding.cpp')
| -rw-r--r-- | lib/CodeGen/BranchFolding.cpp | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/lib/CodeGen/BranchFolding.cpp b/lib/CodeGen/BranchFolding.cpp index 2e978b333e..971552144f 100644 --- a/lib/CodeGen/BranchFolding.cpp +++ b/lib/CodeGen/BranchFolding.cpp @@ -1491,9 +1491,8 @@ MachineBasicBlock::iterator findHoistingInsertPosAndDeps(MachineBasicBlock *MBB, if (!Reg) continue; if (MO.isUse()) { - Uses.insert(Reg); - for (const uint16_t *AS = TRI->getAliasSet(Reg); *AS; ++AS) - Uses.insert(*AS); + for (MCRegAliasIterator AI(Reg, TRI, true); AI.isValid(); ++AI) + Uses.insert(*AI); } else if (!MO.isDead()) // Don't try to hoist code in the rare case the terminator defines a // register that is later used. @@ -1553,18 +1552,16 @@ MachineBasicBlock::iterator findHoistingInsertPosAndDeps(MachineBasicBlock *MBB, if (!Reg) continue; if (MO.isUse()) { - Uses.insert(Reg); - for (const uint16_t *AS = TRI->getAliasSet(Reg); *AS; ++AS) - Uses.insert(*AS); + for (MCRegAliasIterator AI(Reg, TRI, true); AI.isValid(); ++AI) + Uses.insert(*AI); } else { if (Uses.count(Reg)) { Uses.erase(Reg); for (const uint16_t *SR = TRI->getSubRegisters(Reg); *SR; ++SR) Uses.erase(*SR); // Use getSubRegisters to be conservative } - Defs.insert(Reg); - for (const uint16_t *AS = TRI->getAliasSet(Reg); *AS; ++AS) - Defs.insert(*AS); + for (MCRegAliasIterator AI(Reg, TRI, true); AI.isValid(); ++AI) + Defs.insert(*AI); } } |