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Allow target to disable if-converting predicable instructions. e.g. NEON instructions under ARM mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89541 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -514,6 +514,13 @@ public:
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return false;
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}
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/// isPredicable - Return true if the specified instruction can be predicated.
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/// By default, this returns true for every instruction with a
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/// PredicateOperand.
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virtual bool isPredicable(MachineInstr *MI) const {
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return MI->getDesc().isPredicable();
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}
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/// isSafeToMoveRegClassDefs - Return true if it's safe to move a machine
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/// instruction that defines the specified register class.
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virtual bool isSafeToMoveRegClassDefs(const TargetRegisterClass *RC) const {
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@ -608,7 +608,7 @@ void IfConverter::ScanInstructions(BBInfo &BBI) {
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if (TII->DefinesPredicate(I, PredDefs))
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BBI.ClobbersPred = true;
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if (!TID.isPredicable()) {
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if (!TII->isPredicable(I)) {
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BBI.IsUnpredicable = true;
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return;
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}
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