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
diff --git a/lib/CodeGen/BranchFolding.cpp b/lib/CodeGen/BranchFolding.cpp
index 2e978b3..9715521 100644
--- a/lib/CodeGen/BranchFolding.cpp
+++ b/lib/CodeGen/BranchFolding.cpp
@@ -1491,9 +1491,8 @@
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 @@
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);
}
}