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| author | Evan Cheng <evan.cheng@apple.com> | 2012-01-12 18:27:52 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2012-01-12 18:27:52 +0000 |
| commit | f0a95356d649dc0fb65691c4acebee450f3529b4 (patch) | |
| tree | c9118d780c29e453a38401330f4b022dc8f9bdb7 | |
| parent | dd929fc704054fa79cc1171354f95d91a5b62de2 (diff) | |
| download | external_llvm-f0a95356d649dc0fb65691c4acebee450f3529b4.zip external_llvm-f0a95356d649dc0fb65691c4acebee450f3529b4.tar.gz external_llvm-f0a95356d649dc0fb65691c4acebee450f3529b4.tar.bz2 | |
Allow targets to select source order pre-RA scheduler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148033 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | include/llvm/Target/TargetLowering.h | 1 | ||||
| -rw-r--r-- | lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp | 3 |
2 files changed, 3 insertions, 1 deletions
diff --git a/include/llvm/Target/TargetLowering.h b/include/llvm/Target/TargetLowering.h index 456966b..5c891e9 100644 --- a/include/llvm/Target/TargetLowering.h +++ b/include/llvm/Target/TargetLowering.h @@ -56,6 +56,7 @@ namespace llvm { namespace Sched { enum Preference { None, // No preference + Source, // Follow source order. RegPressure, // Scheduling for lowest register pressure. Hybrid, // Scheduling for both latency and register pressure. ILP // Scheduling for ILP in low register pressure mode. diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp index bfb6dfa..9f39699 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp @@ -218,7 +218,8 @@ namespace llvm { CodeGenOpt::Level OptLevel) { const TargetLowering &TLI = IS->getTargetLowering(); - if (OptLevel == CodeGenOpt::None) + if (OptLevel == CodeGenOpt::None || + TLI.getSchedulingPreference() == Sched::Source) return createSourceListDAGScheduler(IS, OptLevel); if (TLI.getSchedulingPreference() == Sched::RegPressure) return createBURRListDAGScheduler(IS, OptLevel); |