Add a SchedMachineModel for the PPC G5

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178850 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/PowerPC/PPC.td b/lib/Target/PowerPC/PPC.td
index 82a69b4..3892162 100644 (file)
--- a/lib/Target/PowerPC/PPC.td
+++ b/lib/Target/PowerPC/PPC.td
@@ -139,12 +139,12 @@ def : Processor<"7450", G4PlusItineraries, [Directive7400, FeatureAltivec,
                                             FeatureFRES, FeatureFRSQRTE]>;
 def : Processor<"g4+", G4PlusItineraries, [Directive7400, FeatureAltivec,
                                            FeatureFRES, FeatureFRSQRTE]>;
-def : Processor<"970", G5Itineraries,
+def : ProcessorModel<"970", G5Model,
                   [Directive970, FeatureAltivec,
                    FeatureMFOCRF, FeatureFSqrt,
                    FeatureFRES, FeatureFRSQRTE, FeatureSTFIWX,
                    Feature64Bit /*, Feature64BitRegs */]>;
-def : Processor<"g5", G5Itineraries,
+def : ProcessorModel<"g5", G5Model,
                   [Directive970, FeatureAltivec,
                    FeatureMFOCRF, FeatureFSqrt, FeatureSTFIWX,
                    FeatureFRES, FeatureFRSQRTE,
@@ -171,37 +171,37 @@ def : ProcessorModel<"a2q", PPCA2Model,
                    FeatureFPRND, FeatureFPCVT, FeatureISEL,
                    FeaturePOPCNTD, FeatureLDBRX, Feature64Bit
                /*, Feature64BitRegs */, FeatureQPX]>;
-def : Processor<"pwr3", G5Itineraries,
+def : ProcessorModel<"pwr3", G5Model,
                   [DirectivePwr3, FeatureAltivec,
                    FeatureFRES, FeatureFRSQRTE, FeatureMFOCRF,
                    FeatureSTFIWX, Feature64Bit]>;
-def : Processor<"pwr4", G5Itineraries,
+def : ProcessorModel<"pwr4", G5Model,
                   [DirectivePwr4, FeatureAltivec, FeatureMFOCRF,
                    FeatureFSqrt, FeatureFRES, FeatureFRSQRTE,
                    FeatureSTFIWX, Feature64Bit]>;
-def : Processor<"pwr5", G5Itineraries,
+def : ProcessorModel<"pwr5", G5Model,
                   [DirectivePwr5, FeatureAltivec, FeatureMFOCRF,
                    FeatureFSqrt, FeatureFRE, FeatureFRES,
                    FeatureFRSQRTE, FeatureFRSQRTES,
                    FeatureSTFIWX, Feature64Bit]>;
-def : Processor<"pwr5x", G5Itineraries,
+def : ProcessorModel<"pwr5x", G5Model,
                   [DirectivePwr5x, FeatureAltivec, FeatureMFOCRF,
                    FeatureFSqrt, FeatureFRE, FeatureFRES,
                    FeatureFRSQRTE, FeatureFRSQRTES,
                    FeatureSTFIWX, FeatureFPRND, Feature64Bit]>;
-def : Processor<"pwr6", G5Itineraries,
+def : ProcessorModel<"pwr6", G5Model,
                   [DirectivePwr6, FeatureAltivec,
                    FeatureMFOCRF, FeatureFSqrt, FeatureFRE,
                    FeatureFRES, FeatureFRSQRTE, FeatureFRSQRTES,
                    FeatureRecipPrec, FeatureSTFIWX, FeatureLFIWAX,
                    FeatureFPRND, Feature64Bit /*, Feature64BitRegs */]>;
-def : Processor<"pwr6x", G5Itineraries,
+def : ProcessorModel<"pwr6x", G5Model,
                   [DirectivePwr5x, FeatureAltivec, FeatureMFOCRF,
                    FeatureFSqrt, FeatureFRE, FeatureFRES,
                    FeatureFRSQRTE, FeatureFRSQRTES, FeatureRecipPrec,
                    FeatureSTFIWX, FeatureLFIWAX,
                    FeatureFPRND, Feature64Bit]>;
-def : Processor<"pwr7", G5Itineraries,
+def : ProcessorModel<"pwr7", G5Model,
                   [DirectivePwr7, FeatureAltivec,
                    FeatureMFOCRF, FeatureFSqrt, FeatureFRE,
                    FeatureFRES, FeatureFRSQRTE, FeatureFRSQRTES,
@@ -210,7 +210,7 @@ def : Processor<"pwr7", G5Itineraries,
                    FeaturePOPCNTD, FeatureLDBRX,
                    Feature64Bit /*, Feature64BitRegs */]>;
 def : Processor<"ppc", G3Itineraries, [Directive32]>;
-def : Processor<"ppc64", G5Itineraries,
+def : ProcessorModel<"ppc64", G5Model,
                   [Directive64, FeatureAltivec,
                    FeatureMFOCRF, FeatureFSqrt, FeatureFRES,
                    FeatureFRSQRTE, FeatureSTFIWX,

diff --git a/lib/Target/PowerPC/PPCScheduleG5.td b/lib/Target/PowerPC/PPCScheduleG5.td
index 7c02ea0..c64998d 100644 (file)
--- a/lib/Target/PowerPC/PPCScheduleG5.td
+++ b/lib/Target/PowerPC/PPCScheduleG5.td
@@ -92,3 +92,18 @@ def G5Itineraries : ProcessorItineraries<
   InstrItinData<VecVSL      , [InstrStage<2, [VIU1]>]>,
   InstrItinData<VecVSR      , [InstrStage<3, [VPU]>]>
 ]>;
+
+// ===---------------------------------------------------------------------===//
+// e5500 machine model for scheduling and other instruction cost heuristics.
+
+def G5Model : SchedMachineModel {
+  let IssueWidth = 4;  // 4 (non-branch) instructions are dispatched per cycle.
+  let MinLatency = 0;  // Out-of-order dispatch.
+  let LoadLatency = 3; // Optimistic load latency assuming bypass.
+                       // This is overriden by OperandCycles if the
+                       // Itineraries are queried instead.
+  let MispredictPenalty = 16;
+
+  let Itineraries = G5Itineraries;
+}
+