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| author | Dan Gohman <gohman@apple.com> | 2009-02-10 23:27:53 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2009-02-10 23:27:53 +0000 |
| commit | 9e64bbb322417c09f27afdf08e3946287c9df5aa (patch) | |
| tree | 0f45649b9b97d56f71574d34dbaa1e9efe3ea096 /lib/CodeGen/ScheduleDAG.cpp | |
| parent | 0464a1431b79ed2be54413de239347c56ad84bfa (diff) | |
| download | llvm-9e64bbb322417c09f27afdf08e3946287c9df5aa.tar.gz llvm-9e64bbb322417c09f27afdf08e3946287c9df5aa.tar.bz2 llvm-9e64bbb322417c09f27afdf08e3946287c9df5aa.tar.xz | |
Factor out more code for computing register live-range informationfor
scheduling, and generalize is so that preserves state across
scheduling regions. This fixes incorrect live-range information around
terminators and labels, which are effective region boundaries.
In place of looking for terminators to anchor inter-block dependencies,
introduce special entry and exit scheduling units for this purpose.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64254 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/ScheduleDAG.cpp')
| -rw-r--r-- | lib/CodeGen/ScheduleDAG.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/CodeGen/ScheduleDAG.cpp b/lib/CodeGen/ScheduleDAG.cpp index 718f591902..f9b9408354 100644 --- a/lib/CodeGen/ScheduleDAG.cpp +++ b/lib/CodeGen/ScheduleDAG.cpp @@ -28,7 +28,8 @@ ScheduleDAG::ScheduleDAG(MachineFunction &mf) TRI(TM.getRegisterInfo()), TLI(TM.getTargetLowering()), MF(mf), MRI(mf.getRegInfo()), - ConstPool(MF.getConstantPool()) { + ConstPool(MF.getConstantPool()), + EntrySU(), ExitSU() { } ScheduleDAG::~ScheduleDAG() {} @@ -58,6 +59,8 @@ void ScheduleDAG::Run(SelectionDAG *dag, MachineBasicBlock *bb, BB = bb; Begin = begin; End = end; + EntrySU = SUnit(); + ExitSU = SUnit(); Schedule(); |