diff options
Diffstat (limited to 'lib/CodeGen/LiveRangeCalc.h')
-rw-r--r-- | lib/CodeGen/LiveRangeCalc.h | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/lib/CodeGen/LiveRangeCalc.h b/lib/CodeGen/LiveRangeCalc.h index 697d5cf179..3c9e40f0fe 100644 --- a/lib/CodeGen/LiveRangeCalc.h +++ b/lib/CodeGen/LiveRangeCalc.h @@ -159,11 +159,26 @@ public: /// single existing value, Alloc may be null. void extend(LiveInterval *LI, SlotIndex Kill); - /// extendToUses - Extend the live range of LI to reach all uses. + /// createDeadDefs - Create a dead def in LI for every def operand of Reg. + /// Each instruction defining Reg gets a new VNInfo with a corresponding + /// minimal live range. + void createDeadDefs(LiveInterval *LI, unsigned Reg); + + /// createDeadDefs - Create a dead def in LI for every def of LI->reg. + void createDeadDefs(LiveInterval *LI) { + createDeadDefs(LI, LI->reg); + } + + /// extendToUses - Extend the live range of LI to reach all uses of Reg. /// /// All uses must be jointly dominated by existing liveness. PHI-defs are /// inserted as needed to preserve SSA form. - void extendToUses(LiveInterval *LI); + void extendToUses(LiveInterval *LI, unsigned Reg); + + /// extendToUses - Extend the live range of LI to reach all uses of LI->reg. + void extendToUses(LiveInterval *LI) { + extendToUses(LI, LI->reg); + } //===--------------------------------------------------------------------===// // Low-level interface. |