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Remove useMachineScheduler and replace it with subtarget options

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that control, individually, all of the disparate things it was
controlling.

At the same time move a FIXME in the Hexagon port to a new
subtarget function that will enable a user of the machine
scheduler to avoid using the source scheduler for pre-RA-scheduling.
The FIXME would have this removed, but involves either testcase
changes or adding -pre-RA-sched=source to a few testcases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231980 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher
2015-03-11 22:56:10 +00:00
parent 85aa6fd741
commit fba5b65942
9 changed files with 46 additions and 69 deletions
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33
lib/CodeGen/Passes.cpp
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@ -55,9 +55,6 @@ static cl::opt<bool> DisableMachineCSE("disable-machine-cse", cl::Hidden,
static cl::opt<cl::boolOrDefault>
OptimizeRegAlloc("optimize-regalloc", cl::Hidden,
cl::desc("Enable optimized register allocation compilation path."));
static cl::opt<cl::boolOrDefault>
EnableMachineSched("enable-misched",
cl::desc("Enable the machine instruction scheduling pass."));
static cl::opt<bool> DisablePostRAMachineLICM("disable-postra-machine-licm",
cl::Hidden,
cl::desc("Disable Machine LICM"));
@ -116,28 +113,6 @@ static IdentifyingPassPtr applyDisable(IdentifyingPassPtr PassID,
return PassID;
}
/// Allow Pass selection to be overriden by command line options. This supports
/// flags with ternary conditions. TargetID is passed through by default. The
/// pass is suppressed when the option is false. When the option is true, the
/// StandardID is selected if the target provides no default.
static IdentifyingPassPtr applyOverride(IdentifyingPassPtr TargetID,
cl::boolOrDefault Override,
AnalysisID StandardID) {
switch (Override) {
case cl::BOU_UNSET:
return TargetID;
case cl::BOU_TRUE:
if (TargetID.isValid())
return TargetID;
if (StandardID == nullptr)
report_fatal_error("Target cannot enable pass");
return StandardID;
case cl::BOU_FALSE:
return IdentifyingPassPtr();
}
llvm_unreachable("Invalid command line option state");
}
/// Allow standard passes to be disabled by the command line, regardless of who
/// is adding the pass.
///
@ -182,9 +157,6 @@ static IdentifyingPassPtr overridePass(AnalysisID StandardID,
if (StandardID == &MachineCSEID)
return applyDisable(TargetID, DisableMachineCSE);
if (StandardID == &MachineSchedulerID)
return applyOverride(TargetID, EnableMachineSched, StandardID);
if (StandardID == &TargetPassConfig::PostRAMachineLICMID)
return applyDisable(TargetID, DisablePostRAMachineLICM);
@ -249,11 +221,6 @@ TargetPassConfig::TargetPassConfig(TargetMachine *tm, PassManagerBase &pm)
// Substitute Pseudo Pass IDs for real ones.
substitutePass(&EarlyTailDuplicateID, &TailDuplicateID);
substitutePass(&PostRAMachineLICMID, &MachineLICMID);
// Temporarily disable experimental passes.
const TargetSubtargetInfo &ST = *TM->getSubtargetImpl();
if (!ST.useMachineScheduler())
disablePass(&MachineSchedulerID);
}
/// Insert InsertedPassID pass after TargetPassID.