Restore the -post-RA-scheduler flag as an override for the target specification. Remove -mattr for setting PostRAScheduler enable and instead use CPU string.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83215 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/PostRASchedulerList.cpp b/lib/CodeGen/PostRASchedulerList.cpp
index 1a744be..eddc489 100644
--- a/lib/CodeGen/PostRASchedulerList.cpp
+++ b/lib/CodeGen/PostRASchedulerList.cpp
@@ -48,11 +48,17 @@
STATISTIC(NumNoops, "Number of noops inserted");
STATISTIC(NumStalls, "Number of pipeline stalls");
+// Post-RA scheduling is enabled with
+// TargetSubtarget.enablePostRAScheduler(). This flag can be used to
+// override the target.
+static cl::opt<bool>
+EnablePostRAScheduler("post-RA-scheduler",
+ cl::desc("Enable scheduling after register allocation"),
+ cl::init(false));
static cl::opt<bool>
EnableAntiDepBreaking("break-anti-dependencies",
cl::desc("Break post-RA scheduling anti-dependencies"),
cl::init(true), cl::Hidden);
-
static cl::opt<bool>
EnablePostRAHazardAvoidance("avoid-hazards",
cl::desc("Enable exact hazard avoidance"),
@@ -215,10 +221,16 @@
}
bool PostRAScheduler::runOnMachineFunction(MachineFunction &Fn) {
- // Check that post-RA scheduling is enabled for this function
- const TargetSubtarget &ST = Fn.getTarget().getSubtarget<TargetSubtarget>();
- if (!ST.enablePostRAScheduler())
- return true;
+ // Check for explicit enable/disable of post-ra scheduling.
+ if (EnablePostRAScheduler.getPosition() > 0) {
+ if (!EnablePostRAScheduler)
+ return true;
+ } else {
+ // Check that post-RA scheduling is enabled for this function
+ const TargetSubtarget &ST = Fn.getTarget().getSubtarget<TargetSubtarget>();
+ if (!ST.enablePostRAScheduler())
+ return true;
+ }
DEBUG(errs() << "PostRAScheduler\n");