Do a scheduling pass ignoring anti-dependencies to identify candidate registers that should be renamed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85939 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 4 insertions, 0 deletions

diff --git a/lib/CodeGen/AggressiveAntiDepBreaker.h b/lib/CodeGen/AggressiveAntiDepBreaker.h
index 720f39080f..5d9b40b00c 100644
--- a/lib/CodeGen/AggressiveAntiDepBreaker.h
+++ b/lib/CodeGen/AggressiveAntiDepBreaker.h
@@ -131,6 +131,9 @@ namespace llvm {
     /// dependencies may be exposed, so multiple passes are required.
     unsigned GetMaxTrials();
 
+    /// NeedCandidates - Candidates required.
+    bool NeedCandidates() { return true; }
+
     /// Start - Initialize anti-dep breaking for a new basic block.
     void StartBlock(MachineBasicBlock *BB);
 
@@ -138,6 +141,7 @@ namespace llvm {
     /// of the ScheduleDAG and break them by renaming registers.
     ///
     unsigned BreakAntiDependencies(std::vector<SUnit>& SUnits,
+                                   CandidateMap& Candidates,
                                    MachineBasicBlock::iterator& Begin,
                                    MachineBasicBlock::iterator& End,
                                    unsigned InsertPosIndex);