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| author | Andrew Trick <atrick@apple.com> | 2010-12-23 03:43:21 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2010-12-23 03:43:21 +0000 |
| commit | cb7947b81be4cb55fc647ea3722eb7a8613545cb (patch) | |
| tree | 41b3598a854282a28cb3552e728619c8c00b6852 /lib/CodeGen | |
| parent | 1b1658741aa4bc88fc488ef217d9603294e16c58 (diff) | |
| download | llvm-cb7947b81be4cb55fc647ea3722eb7a8613545cb.tar.gz llvm-cb7947b81be4cb55fc647ea3722eb7a8613545cb.tar.bz2 llvm-cb7947b81be4cb55fc647ea3722eb7a8613545cb.tar.xz | |
In CheckForLiveRegDef use TRI->getOverlaps.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122473 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp index 793fa3d599..21227950d0 100644 --- a/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp +++ b/lib/CodeGen/SelectionDAG/ScheduleDAGRRList.cpp @@ -659,15 +659,18 @@ static void CheckForLiveRegDef(SUnit *SU, unsigned Reg, SmallSet<unsigned, 4> &RegAdded, SmallVector<unsigned, 4> &LRegs, const TargetRegisterInfo *TRI) { - if (LiveRegDefs[Reg] && LiveRegDefs[Reg] != SU) { + for (const unsigned *AliasI = TRI->getOverlaps(Reg); *AliasI; ++AliasI) { + + // Check if Ref is live. + if (!LiveRegDefs[Reg]) continue; + + // Allow multiple uses of the same def. + if (LiveRegDefs[Reg] == SU) continue; + + // Add Reg to the set of interfering live regs. if (RegAdded.insert(Reg)) LRegs.push_back(Reg); } - for (const unsigned *Alias = TRI->getAliasSet(Reg); *Alias; ++Alias) - if (LiveRegDefs[*Alias] && LiveRegDefs[*Alias] != SU) { - if (RegAdded.insert(*Alias)) - LRegs.push_back(*Alias); - } } /// DelayForLiveRegsBottomUp - Returns true if it is necessary to delay |