From ad1cc1d1bfc0accd3f1af5c02ac367ff46a4bfdf Mon Sep 17 00:00:00 2001 From: Andrew Trick Date: Tue, 13 Nov 2012 08:47:29 +0000 Subject: misched: Allow subtargets to enable misched and dependent options. This allows me to begin enabling (or backing out) misched by default for one subtarget at a time. To run misched we typically want to: - Disable SelectionDAG scheduling (use the source order scheduler) - Enable more aggressive coalescing (until we decide to always run the coalescer this way) - Enable MachineScheduler pass itself. Disabling PostRA sched may follow for some subtargets. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167826 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp') diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp index c314fa5b51..d63a5b7a3b 100644 --- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp +++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp @@ -45,6 +45,7 @@ #include "llvm/Target/TargetLowering.h" #include "llvm/Target/TargetMachine.h" #include "llvm/Target/TargetOptions.h" +#include "llvm/Target/TargetSubtargetInfo.h" #include "llvm/Transforms/Utils/BasicBlockUtils.h" #include "llvm/Support/Compiler.h" #include "llvm/Support/Debug.h" @@ -216,8 +217,9 @@ namespace llvm { ScheduleDAGSDNodes* createDefaultScheduler(SelectionDAGISel *IS, CodeGenOpt::Level OptLevel) { const TargetLowering &TLI = IS->getTargetLowering(); + const TargetSubtargetInfo &ST = IS->TM.getSubtarget(); - if (OptLevel == CodeGenOpt::None || + if (OptLevel == CodeGenOpt::None || ST.enableMachineScheduler() || TLI.getSchedulingPreference() == Sched::Source) return createSourceListDAGScheduler(IS, OptLevel); if (TLI.getSchedulingPreference() == Sched::RegPressure) -- cgit v1.2.3