diff options
Diffstat (limited to 'lib/CodeGen/RegAllocBase.h')
| -rw-r--r-- | lib/CodeGen/RegAllocBase.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/CodeGen/RegAllocBase.h b/lib/CodeGen/RegAllocBase.h index a0416d27d8..8c7e5f53b8 100644 --- a/lib/CodeGen/RegAllocBase.h +++ b/lib/CodeGen/RegAllocBase.h @@ -139,6 +139,15 @@ protected: // exists, return the interfering register, which may be preg or an alias. unsigned checkPhysRegInterference(LiveInterval& VirtReg, unsigned PhysReg); + /// assign - Assign VirtReg to PhysReg. + /// This should not be called from selectOrSplit for the current register. + void assign(LiveInterval &VirtReg, unsigned PhysReg); + + /// unassign - Undo a previous assignment of VirtReg to PhysReg. + /// This can be invoked from selectOrSplit, but be careful to guarantee that + /// allocation is making progress. + void unassign(LiveInterval &VirtReg, unsigned PhysReg); + // Helper for spilling all live virtual registers currently unified under preg // that interfere with the most recently queried lvr. Return true if spilling // was successful, and append any new spilled/split intervals to splitLVRs. |