Add a subtarget hook: enablePostMachineScheduler.
As requested by AArch64 subtargets.
Note that this will have no effect until the
AArch64 target actually enables the pass like this:
substitutePass(&PostRASchedulerID, &PostMachineSchedulerID);
As soon as armv7 switches over, PostMachineScheduler will become the
default postRA scheduler, so this won't be necessary any more.
Targets using the old postRA schedule would then do:
substitutePass(&PostMachineSchedulerID, &PostRASchedulerID);
llvm-svn: 210167
diff --git a/llvm/lib/CodeGen/Passes.cpp b/llvm/lib/CodeGen/Passes.cpp
index b3f7198..9568e23 100644
--- a/llvm/lib/CodeGen/Passes.cpp
+++ b/llvm/lib/CodeGen/Passes.cpp
@@ -92,9 +92,9 @@
// Temporary option to allow experimenting with MachineScheduler as a post-RA
// scheduler. Targets can "properly" enable this with
-// substitutePass(&PostRASchedulerID, &MachineSchedulerID); Ideally it wouldn't
-// be part of the standard pass pipeline, and the target would just add a PostRA
-// scheduling pass wherever it wants.
+// substitutePass(&PostRASchedulerID, &PostMachineSchedulerID); Ideally it
+// wouldn't be part of the standard pass pipeline, and the target would just add
+// a PostRA scheduling pass wherever it wants.
static cl::opt<bool> MISchedPostRA("misched-postra", cl::Hidden,
cl::desc("Run MachineScheduler post regalloc (independent of preRA sched)"));