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[LoongArch] Add option for disable MI scheduling #163150

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[LoongArch] Add option for disable MI scheduling #163150

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10 changes: 10 additions & 0 deletions llvm/lib/Target/LoongArch/LoongArchSubtarget.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -22,11 +22,21 @@ using namespace llvm;
#define GET_SUBTARGETINFO_CTOR
#include "LoongArchGenSubtargetInfo.inc"

static cl::opt<bool>
DisableMISched("loongarch-disable-misched", cl::Hidden,
cl::desc("Disable LoongArch MI Scheduling"));

static cl::opt<bool> UseAA("loongarch-use-aa", cl::init(true),
cl::desc("Enable the use of AA during codegen."));

void LoongArchSubtarget::anchor() {}

bool LoongArchSubtarget::enableMachineScheduler() const {
if (DisableMISched.getNumOccurrences())
return !DisableMISched;
return true;
}

// Enable use of alias analysis during code generation (during MI scheduling,
// DAGCombine, etc.).
bool LoongArchSubtarget::useAA() const { return UseAA; }
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2 changes: 1 addition & 1 deletion llvm/lib/Target/LoongArch/LoongArchSubtarget.h
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Expand Up @@ -104,7 +104,7 @@ class LoongArchSubtarget : public LoongArchGenSubtargetInfo {
Align getPrefLoopAlignment() const { return PrefLoopAlignment; }
unsigned getMaxBytesForAlignment() const { return MaxBytesForAlignment; }
unsigned getMaxInterleaveFactor() const { return MaxInterleaveFactor; }
bool enableMachineScheduler() const override { return true; }
bool enableMachineScheduler() const override;
bool useAA() const override;
};
} // end namespace llvm
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