diff options
| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-06-01 20:36:54 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-06-01 20:36:54 +0000 |
| commit | f152fe8d487c46873bbdd4abab43200f783e978b (patch) | |
| tree | 42739be7996946e18e2b54ca3c1d801a96f73207 /lib/CodeGen/BranchFolding.cpp | |
| parent | 73c2f7f5ed767a6fc062fd198551be902b7b7d5b (diff) | |
Switch some getAliasSet clients to MCRegAliasIterator.
MCRegAliasIterator can optionally visit the register itself, allowing
for simpler code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157837 91177308-0d34-0410-b5e6-96231b3b80d8
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); } } |