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-rw-r--r--llvm/lib/Target/PowerPC/PPC.td2
-rw-r--r--llvm/lib/Target/PowerPC/PPCSchedule.td1
-rw-r--r--llvm/lib/Target/PowerPC/PPCScheduleP7.td386
-rw-r--r--llvm/lib/Target/PowerPC/PPCSubtarget.cpp3
4 files changed, 390 insertions, 2 deletions
diff --git a/llvm/lib/Target/PowerPC/PPC.td b/llvm/lib/Target/PowerPC/PPC.td
index 18430d47a46..a8bb52d90dc 100644
--- a/llvm/lib/Target/PowerPC/PPC.td
+++ b/llvm/lib/Target/PowerPC/PPC.td
@@ -254,7 +254,7 @@ def : ProcessorModel<"pwr6x", G5Model,
FeatureSTFIWX, FeatureLFIWAX,
FeatureFPRND, Feature64Bit,
DeprecatedMFTB, DeprecatedDST]>;
-def : ProcessorModel<"pwr7", G5Model,
+def : ProcessorModel<"pwr7", P7Model,
[DirectivePwr7, FeatureAltivec,
FeatureMFOCRF, FeatureFCPSGN, FeatureFSqrt, FeatureFRE,
FeatureFRES, FeatureFRSQRTE, FeatureFRSQRTES,
diff --git a/llvm/lib/Target/PowerPC/PPCSchedule.td b/llvm/lib/Target/PowerPC/PPCSchedule.td
index ce048f9d224..1221d414999 100644
--- a/llvm/lib/Target/PowerPC/PPCSchedule.td
+++ b/llvm/lib/Target/PowerPC/PPCSchedule.td
@@ -117,6 +117,7 @@ include "PPCSchedule440.td"
include "PPCScheduleG4.td"
include "PPCScheduleG4Plus.td"
include "PPCScheduleG5.td"
+include "PPCScheduleP7.td"
include "PPCScheduleA2.td"
include "PPCScheduleE500mc.td"
include "PPCScheduleE5500.td"
diff --git a/llvm/lib/Target/PowerPC/PPCScheduleP7.td b/llvm/lib/Target/PowerPC/PPCScheduleP7.td
new file mode 100644
index 00000000000..95b5a8b2c65
--- /dev/null
+++ b/llvm/lib/Target/PowerPC/PPCScheduleP7.td
@@ -0,0 +1,386 @@
+//===-- PPCScheduleP7.td - PPC P7 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 itinerary class data for the POWER7 processor.
+//
+//===----------------------------------------------------------------------===//
+
+// Primary reference:
+// IBM POWER7 multicore server processor
+// B. Sinharoy, et al.
+// IBM J. Res. & Dev. (55) 3. May/June 2011.
+
+// Scheduling for the P7 involves tracking two types of resources:
+// 1. The dispatch bundle slots
+// 2. The functional unit resources
+
+// Dispatch units:
+def P7_DU1 : FuncUnit;
+def P7_DU2 : FuncUnit;
+def P7_DU3 : FuncUnit;
+def P7_DU4 : FuncUnit;
+def P7_DU5 : FuncUnit;
+def P7_DU6 : FuncUnit;
+
+def P7_LS1 : FuncUnit; // Load/Store pipeline 1
+def P7_LS2 : FuncUnit; // Load/Store pipeline 2
+
+def P7_FX1 : FuncUnit; // FX pipeline 1
+def P7_FX2 : FuncUnit; // FX pipeline 2
+
+// VS pipeline 1 (vector integer ops. always here)
+def P7_VS1 : FuncUnit; // VS pipeline 1
+// VS pipeline 2 (128-bit stores and perms. here)
+def P7_VS2 : FuncUnit; // VS pipeline 2
+
+def P7_CRU : FuncUnit; // CR unit (CR logicals and move-from-SPRs)
+def P7_BRU : FuncUnit; // BR unit
+
+// Notes:
+// Each LSU pipeline can also execute FX add and logical instructions.
+// Each LSU pipeline can complete a load or store in one cycle.
+//
+// Each store is broken into two parts, AGEN goes to the LSU while a
+// "data steering" op. goes to the FXU or VSU.
+//
+// FX loads have a two cycle load-to-use latency (so one "bubble" cycle).
+// VSU loads have a three cycle load-to-use latency (so two "bubble" cycle).
+//
+// Frequent FX ops. take only one cycle and results can be used again in the
+// next cycle (there is a self-bypass). Getting results from the other FX
+// pipeline takes an additional cycle.
+//
+// The VSU XS is similar to the POWER6, but with a pipeline length of 2 cycles
+// (instead of 3 cycles on the POWER6). VSU XS handles vector FX-style ops.
+// Dispatch of an instruction to VS1 that uses four single prec. inputs
+// (either to a float or XC op). prevents dispatch in that cycle to VS2 of any
+// floating point instruction.
+//
+// The VSU PM is similar to the POWER6, but with a pipeline length of 3 cycles
+// (instead of 4 cycles on the POWER6). vsel is handled by the PM pipeline
+// (unlike on the POWER6).
+//
+// FMA from the VSUs can forward results in 6 cycles. VS1 XS and vector FP
+// share the same write-back, and have a 5-cycle latency difference, so the
+// IFU/IDU will not dispatch an XS instructon 5 cycles after a vector FP
+// op. has been dispatched to VS1.
+//
+// Three cycles after an L1 cache hit, a dependent VSU instruction can issue.
+//
+// Instruction dispatch groups have (at most) four non-branch instructions, and
+// two branches. Unlike on the POWER4/5, a branch does not automatically
+// end the dispatch group, but a second branch must be the last in the group.
+
+def P7Itineraries : ProcessorItineraries<
+ [P7_DU1, P7_DU2, P7_DU3, P7_DU4, P7_DU5, P7_DU6,
+ P7_LS1, P7_LS2, P7_FX1, P7_FX2, P7_VS1, P7_VS2, P7_CRU, P7_BRU], [], [
+ InstrItinData<IIC_IntSimple , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2,
+ P7_LS1, P7_LS2]>],
+ [1, 1, 1]>,
+ InstrItinData<IIC_IntGeneral , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [1, 1, 1]>,
+ InstrItinData<IIC_IntCompare , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [1, 1, 1]>,
+ InstrItinData<IIC_IntDivW , [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<36, [P7_FX1, P7_FX2]>],
+ [36, 1, 1]>,
+ InstrItinData<IIC_IntDivD , [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<68, [P7_FX1, P7_FX2]>],
+ [68, 1, 1]>,
+ InstrItinData<IIC_IntMulHW , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [4, 1, 1]>,
+ InstrItinData<IIC_IntMulHWU , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [4, 1, 1]>,
+ InstrItinData<IIC_IntMulLI , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [4, 1, 1]>,
+ InstrItinData<IIC_IntRotate , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [1, 1, 1]>,
+ InstrItinData<IIC_IntRotateD , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [1, 1, 1]>,
+ InstrItinData<IIC_IntShift , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [1, 1, 1]>,
+ InstrItinData<IIC_IntTrapW , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [1, 1]>,
+ InstrItinData<IIC_IntTrapD , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [1, 1]>,
+ InstrItinData<IIC_BrB , [InstrStage<1, [P7_DU5, P7_DU6], 0>,
+ InstrStage<1, [P7_BRU]>],
+ [3, 1, 1]>,
+ InstrItinData<IIC_BrCR , [InstrStage<1, [P7_DU5, P7_DU6], 0>,
+ InstrStage<1, [P7_BRU]>],
+ [3, 1, 1]>,
+ InstrItinData<IIC_BrMCR , [InstrStage<1, [P7_DU5, P7_DU6], 0>,
+ InstrStage<1, [P7_BRU]>],
+ [3, 1, 1]>,
+ InstrItinData<IIC_BrMCRX , [InstrStage<1, [P7_DU5, P7_DU6], 0>,
+ InstrStage<1, [P7_BRU]>],
+ [3, 1, 1]>,
+ InstrItinData<IIC_LdStLoad , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2]>],
+ [2, 1, 1]>,
+ InstrItinData<IIC_LdStLoadUpd , [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [2, 2, 1, 1]>,
+ InstrItinData<IIC_LdStLoadUpdX, [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<1, [P7_DU3], 0>,
+ InstrStage<1, [P7_DU4], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>,
+ InstrStage<1, [P7_LS1, P7_LS2], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [3, 3, 1, 1]>,
+ InstrItinData<IIC_LdStLD , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2]>],
+ [2, 1, 1]>,
+ InstrItinData<IIC_LdStLDU , [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [2, 2, 1, 1]>,
+ InstrItinData<IIC_LdStLDUX , [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<1, [P7_DU3], 0>,
+ InstrStage<1, [P7_DU4], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>,
+ InstrStage<1, [P7_LS1, P7_LS2], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [3, 3, 1, 1]>,
+ InstrItinData<IIC_LdStLFD , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2]>],
+ [3, 1, 1]>,
+ InstrItinData<IIC_LdStLVecX , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2]>],
+ [3, 1, 1]>,
+ InstrItinData<IIC_LdStLFDU , [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [3, 3, 1, 1]>,
+ InstrItinData<IIC_LdStLFDUX , [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [3, 3, 1, 1]>,
+ InstrItinData<IIC_LdStLHA , [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2]>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [3, 1, 1]>,
+ InstrItinData<IIC_LdStLHAU , [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [4, 4, 1, 1]>,
+ InstrItinData<IIC_LdStLHAUX , [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<1, [P7_DU3], 0>,
+ InstrStage<1, [P7_DU4], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>,
+ InstrStage<1, [P7_LS1, P7_LS2], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [4, 4, 1, 1]>,
+ InstrItinData<IIC_LdStLWA , [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2]>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [3, 1, 1]>,
+ InstrItinData<IIC_LdStLWARX, [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<1, [P7_DU3], 0>,
+ InstrStage<1, [P7_DU4], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2]>],
+ [3, 1, 1]>,
+ InstrItinData<IIC_LdStLDARX, [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<1, [P7_DU3], 0>,
+ InstrStage<1, [P7_DU4], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2]>],
+ [3, 1, 1]>,
+ InstrItinData<IIC_LdStLMW , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2]>],
+ [2, 1, 1]>,
+ InstrItinData<IIC_LdStStore , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [1, 1, 1]>,
+ InstrItinData<IIC_LdStSTD , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [1, 1, 1]>,
+ InstrItinData<IIC_LdStSTDU , [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [2, 1, 1, 1]>,
+ InstrItinData<IIC_LdStSTDUX , [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<1, [P7_DU3], 0>,
+ InstrStage<1, [P7_DU4], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2]>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [2, 1, 1, 1]>,
+ InstrItinData<IIC_LdStSTFD , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2], 0>,
+ InstrStage<1, [P7_VS1, P7_VS2]>],
+ [1, 1, 1]>,
+ InstrItinData<IIC_LdStSTFDU , [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2], 0>,
+ InstrStage<1, [P7_FX1, P7_FX2], 0>,
+ InstrStage<1, [P7_VS1, P7_VS2]>],
+ [2, 1, 1, 1]>,
+ InstrItinData<IIC_LdStSTVEBX , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2], 0>,
+ InstrStage<1, [P7_VS2]>],
+ [1, 1, 1]>,
+ InstrItinData<IIC_LdStSTDCX , [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<1, [P7_DU3], 0>,
+ InstrStage<1, [P7_DU4], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2]>],
+ [1, 1, 1]>,
+ InstrItinData<IIC_LdStSTWCX , [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_DU2], 0>,
+ InstrStage<1, [P7_DU3], 0>,
+ InstrStage<1, [P7_DU4], 0>,
+ InstrStage<1, [P7_LS1, P7_LS2]>],
+ [1, 1, 1]>,
+ InstrItinData<IIC_BrMCRX , [InstrStage<1, [P7_DU4], 0>,
+ InstrStage<1, [P7_CRU]>,
+ InstrStage<1, [P7_FX1, P7_FX2]>],
+ [3, 1]>, // mtcr
+ InstrItinData<IIC_SprMFCR , [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_CRU]>],
+ [6, 1]>,
+ InstrItinData<IIC_SprMFCRF , [InstrStage<1, [P7_DU1], 0>,
+ InstrStage<1, [P7_CRU]>],
+ [3, 1]>,
+ InstrItinData<IIC_FPGeneral , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_VS1, P7_VS2]>],
+ [5, 1, 1]>,
+ InstrItinData<IIC_FPCompare , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_VS1, P7_VS2]>],
+ [8, 1, 1]>,
+ InstrItinData<IIC_FPDivD , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_VS1, P7_VS2]>],
+ [33, 1, 1]>,
+ InstrItinData<IIC_FPDivS , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_VS1, P7_VS2]>],
+ [27, 1, 1]>,
+ InstrItinData<IIC_FPSqrtD , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_VS1, P7_VS2]>],
+ [44, 1, 1]>,
+ InstrItinData<IIC_FPSqrtS , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_VS1, P7_VS2]>],
+ [32, 1, 1]>,
+ InstrItinData<IIC_FPFused , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_VS1, P7_VS2]>],
+ [5, 1, 1, 1]>,
+ InstrItinData<IIC_FPRes , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_VS1, P7_VS2]>],
+ [5, 1, 1]>,
+ InstrItinData<IIC_VecGeneral , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_VS1]>],
+ [2, 1, 1]>,
+ InstrItinData<IIC_VecVSL , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_VS1]>],
+ [2, 1, 1]>,
+ InstrItinData<IIC_VecVSR , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_VS1]>],
+ [2, 1, 1]>,
+ InstrItinData<IIC_VecFP , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_VS1, P7_VS2]>],
+ [6, 1, 1]>,
+ InstrItinData<IIC_VecFPCompare, [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_VS1, P7_VS2]>],
+ [6, 1, 1]>,
+ InstrItinData<IIC_VecFPRound , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_VS1, P7_VS2]>],
+ [6, 1, 1]>,
+ InstrItinData<IIC_VecComplex , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_VS1]>],
+ [7, 1, 1]>,
+ InstrItinData<IIC_VecPerm , [InstrStage<1, [P7_DU1, P7_DU2,
+ P7_DU3, P7_DU4], 0>,
+ InstrStage<1, [P7_VS2]>],
+ [2, 1, 1]>
+]>;
+
+// ===---------------------------------------------------------------------===//
+// P7 machine model for scheduling and other instruction cost heuristics.
+
+def P7Model : SchedMachineModel {
+ let IssueWidth = 6; // 4 (non-branch) instructions are dispatched per cycle.
+ // Note that the dispatch bundle size is 6 (including
+ // branches), but the total internal issue bandwidth per
+ // cycle (from all queues) is 8.
+
+ 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 = P7Itineraries;
+}
+
diff --git a/llvm/lib/Target/PowerPC/PPCSubtarget.cpp b/llvm/lib/Target/PowerPC/PPCSubtarget.cpp
index 7231ab101a2..4de558377b6 100644
--- a/llvm/lib/Target/PowerPC/PPCSubtarget.cpp
+++ b/llvm/lib/Target/PowerPC/PPCSubtarget.cpp
@@ -179,7 +179,7 @@ bool PPCSubtarget::enablePostRAScheduler(
return OptLevel >= CodeGenOpt::Default;
}
-// Embedded cores need aggressive scheduling.
+// Embedded cores need aggressive scheduling (and some others also benefit).
static bool needsAggressiveScheduling(unsigned Directive) {
switch (Directive) {
default: return false;
@@ -187,6 +187,7 @@ static bool needsAggressiveScheduling(unsigned Directive) {
case PPC::DIR_A2:
case PPC::DIR_E500mc:
case PPC::DIR_E5500:
+ case PPC::DIR_PWR7:
return true;
}
}
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