[PATCH] D26972: [AArch64] Add a basic SchedMachineModel for Falkor.

[Chad Rosier via llvm-commits]

mcrosier created this revision.
mcrosier added reviewers: MatzeB, rengolin.
mcrosier added a subscriber: llvm-commits.
Herald added a subscriber: aemerson.

PTAL,
Chad


https://reviews.llvm.org/D26972

Files:
  lib/Target/AArch64/AArch64.td
  lib/Target/AArch64/AArch64SchedFalkor.td


Index: lib/Target/AArch64/AArch64SchedFalkor.td
===================================================================
--- /dev/null
+++ lib/Target/AArch64/AArch64SchedFalkor.td
@@ -0,0 +1,26 @@
+//==- AArch64SchedFalkor.td - Falkor Scheduling Definitions -*- tablegen -*-==//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the machine model for Qualcomm Falkor to support
+// instruction scheduling and other instruction cost heuristics.
+//
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+// Define the SchedMachineModel and provide basic properties for coarse grained
+// instruction cost model.
+
+def FalkorModel : SchedMachineModel {
+  let IssueWidth = 4;          // 4-wide issue for expanded uops.
+  let MicroOpBufferSize = 128; // Out-of-order with temporary unified issue buffer.
+  let LoopMicroOpBufferSize = 16;
+  let LoadLatency = 3;         // Optimistic load latency.
+  let MispredictPenalty = 11;  // Minimum branch misprediction penalty.
+  let CompleteModel = 0;
+}
Index: lib/Target/AArch64/AArch64.td
===================================================================
--- lib/Target/AArch64/AArch64.td
+++ lib/Target/AArch64/AArch64.td
@@ -144,8 +144,9 @@
 include "AArch64SchedA53.td"
 include "AArch64SchedA57.td"
 include "AArch64SchedCyclone.td"
-include "AArch64SchedM1.td"
+include "AArch64SchedFalkor.td"
 include "AArch64SchedKryo.td"
+include "AArch64SchedM1.td"
 include "AArch64SchedVulcan.td"
 
 def ProcA35     : SubtargetFeature<"a35", "ARMProcFamily", "CortexA35",
@@ -292,7 +293,7 @@
 def : ProcessorModel<"cyclone", CycloneModel, [ProcCyclone]>;
 def : ProcessorModel<"exynos-m1", ExynosM1Model, [ProcExynosM1]>;
 def : ProcessorModel<"exynos-m2", ExynosM1Model, [ProcExynosM2]>;
-def : ProcessorModel<"falkor", NoSchedModel, [ProcFalkor]>;
+def : ProcessorModel<"falkor", FalkorModel, [ProcFalkor]>;
 def : ProcessorModel<"kryo", KryoModel, [ProcKryo]>;
 def : ProcessorModel<"vulcan", VulcanModel, [ProcVulcan]>;
 


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