diff options
Diffstat (limited to 'lib/CodeGen/MachineScheduler.cpp')
| -rw-r--r-- | lib/CodeGen/MachineScheduler.cpp | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/CodeGen/MachineScheduler.cpp b/lib/CodeGen/MachineScheduler.cpp index 89ac6a8..7a3c80b 100644 --- a/lib/CodeGen/MachineScheduler.cpp +++ b/lib/CodeGen/MachineScheduler.cpp @@ -209,6 +209,11 @@ static MachineSchedRegistry DefaultSchedRegistry("default", "Use the target's default scheduler choice.", useDefaultMachineSched); +static cl::opt<bool> EnableMachineSched( + "enable-misched", + cl::desc("Enable the machine instruction scheduling pass."), cl::init(true), + cl::Hidden); + /// Forward declare the standard machine scheduler. This will be used as the /// default scheduler if the target does not set a default. static ScheduleDAGInstrs *createGenericSchedLive(MachineSchedContext *C); @@ -304,6 +309,12 @@ ScheduleDAGInstrs *PostMachineScheduler::createPostMachineScheduler() { /// design would be to split blocks at scheduling boundaries, but LLVM has a /// general bias against block splitting purely for implementation simplicity. bool MachineScheduler::runOnMachineFunction(MachineFunction &mf) { + if (EnableMachineSched.getNumOccurrences()) { + if (!EnableMachineSched) + return false; + } else if (!mf.getSubtarget().enableMachineScheduler()) + return false; + DEBUG(dbgs() << "Before MISsched:\n"; mf.print(dbgs())); // Initialize the context of the pass. |