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[AArch64] Adjust the scheduling model for Exynos M1.
Further refine the model for loads. llvm-svn: 280734
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@ -64,9 +64,16 @@ let SchedModel = ExynosM1Model in {
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//===----------------------------------------------------------------------===//
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// Coarse scheduling model for the Exynos-M1.
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def M1WriteLDIdxA : SchedWriteRes<[M1UnitL]> { let Latency = 5; }
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def M1WriteLDIdxB : SchedWriteRes<[M1UnitL,
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M1UnitALU]> { let Latency = 5; }
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def M1WriteA1 : SchedWriteRes<[M1UnitALU]> { let Latency = 1; }
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def M1WriteL5 : SchedWriteRes<[M1UnitL]> { let Latency = 5; }
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def M1WriteLA : SchedWriteVariant<[SchedVar<ScaledIdxPred, [M1WriteL5,
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M1WriteA1]>,
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SchedVar<NoSchedPred, [M1WriteL5]>]>;
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def M1ReadAdrBase : SchedReadVariant<[SchedVar<ScaledIdxPred, [ReadDefault]>,
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SchedVar<NoSchedPred, [ReadDefault]>]>;
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def : SchedAlias<ReadAdrBase, M1ReadAdrBase>;
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// Branch instructions.
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// NOTE: Unconditional direct branches actually take neither cycles nor units.
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@ -106,14 +113,7 @@ def : WriteRes<WriteAdr, []> { let Latency = 0; }
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// Load instructions.
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def : WriteRes<WriteLD, [M1UnitL]> { let Latency = 4; }
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def : WriteRes<WriteLDHi, [M1UnitALU]> { let Latency = 4; }
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def M1WriteLDIdx : SchedWriteVariant<[
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SchedVar<ScaledIdxPred, [M1WriteLDIdxB]>,
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SchedVar<NoSchedPred, [M1WriteLDIdxA]>]>;
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def : SchedAlias<WriteLDIdx, M1WriteLDIdx>;
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def M1ReadAdrBase : SchedReadVariant<[
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SchedVar<ScaledIdxPred, [ReadDefault]>,
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SchedVar<NoSchedPred, [ReadDefault]>]>;
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def : SchedAlias<ReadAdrBase, M1ReadAdrBase>;
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def : SchedAlias<WriteLDIdx, M1WriteLA>;
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// Store instructions.
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def : WriteRes<WriteST, [M1UnitS]> { let Latency = 1; }
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