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Add a SchedMachineModel for the PPC A2

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178848 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Hal Finkel 2013-04-05 05:34:08 +00:00
parent 3bc45c2ed1
commit 575e9229bd
2 changed files with 17 additions and 2 deletions
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4
lib/Target/PowerPC/PPC.td
View File

@ -155,7 +155,7 @@ def : ProcessorModel<"e500mc", PPCE500mcModel,
def : ProcessorModel<"e5500", PPCE5500Model,
[DirectiveE5500, FeatureMFOCRF, Feature64Bit,
FeatureSTFIWX, FeatureBookE, FeatureISEL]>;
def : Processor<"a2", PPCA2Itineraries,
def : ProcessorModel<"a2", PPCA2Model,
[DirectiveA2, FeatureBookE, FeatureMFOCRF,
FeatureFSqrt, FeatureFRE, FeatureFRES,
FeatureFRSQRTE, FeatureFRSQRTES, FeatureRecipPrec,
@ -163,7 +163,7 @@ def : Processor<"a2", PPCA2Itineraries,
FeatureFPRND, FeatureFPCVT, FeatureISEL,
FeaturePOPCNTD, FeatureLDBRX, Feature64Bit
/*, Feature64BitRegs */]>;
def : Processor<"a2q", PPCA2Itineraries,
def : ProcessorModel<"a2q", PPCA2Model,
[DirectiveA2, FeatureBookE, FeatureMFOCRF,
FeatureFSqrt, FeatureFRE, FeatureFRES,
FeatureFRSQRTE, FeatureFRSQRTES, FeatureRecipPrec,

15
lib/Target/PowerPC/PPCScheduleA2.td
View File

@ -749,3 +749,18 @@ def PPCA2Itineraries : ProcessorItineraries<
[15, 7],
[FPR_Bypass, FPR_Bypass]>
]>;
// ===---------------------------------------------------------------------===//
// A2 machine model for scheduling and other instruction cost heuristics.
def PPCA2Model : SchedMachineModel {
let IssueWidth = 1; // 2 micro-ops are dispatched per cycle.
let MinLatency = -1; // OperandCycles are interpreted as MinLatency.
let LoadLatency = 6; // Optimistic load latency assuming bypass.
// This is overriden by OperandCycles if the
// Itineraries are queried instead.
let MispredictPenalty = 6;
let Itineraries = PPCA2Itineraries;
}