[llvm] r315313 - [PowerPC] Add missing record form instructions to the P9 Scheduling Model

[Stefan Pintilie via llvm-commits]

Author: stefanp
Date: Tue Oct 10 06:45:35 2017
New Revision: 315313

URL: http://llvm.org/viewvc/llvm-project?rev=315313&view=rev
Log:
[PowerPC] Add missing record form instructions to the P9 Scheduling Model

A number of record form instructions were missing from the P9 scheduling
model. Added those instructions and marked the P9 model as complete.

Differential Revision: https://reviews.llvm.org/D38560

Modified:
    llvm/trunk/lib/Target/PowerPC/P9InstrResources.td
    llvm/trunk/lib/Target/PowerPC/PPCScheduleP9.td

Modified: llvm/trunk/lib/Target/PowerPC/P9InstrResources.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/P9InstrResources.td?rev=315313&r1=315312&r2=315313&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/P9InstrResources.td (original)
+++ llvm/trunk/lib/Target/PowerPC/P9InstrResources.td Tue Oct 10 06:45:35 2017
@@ -495,6 +495,18 @@ def : InstRW<[P9_DP_7C, IP_EXEC_1C, DISP
     XSNMSUBMSP
 )>;
 
+// 7 cycle Restricted DP operation and one 2 cycle ALU operation.
+//  The DP is restricted so we need a full 5 dispatches.
+def : InstRW<[P9_DPOpAndALUOp_9C, IP_EXEC_1C, IP_EXEC_1C,
+              DISP_1C, DISP_1C, DISP_1C, DISP_1C, DISP_1C],
+      (instrs
+    FMULo,
+    FMADDo,
+    FMSUBo,
+    FNMADDo,
+    FNMSUBo
+)>;
+
 // 7 cycle DP operation. One DP unit, one EXEC pipeline and two dispatch units.
 def : InstRW<[P9_DP_7C, IP_EXEC_1C, DISP_1C, DISP_1C],
       (instrs
@@ -823,6 +835,8 @@ def : InstRW<[P9_DIV_40C_8, IP_EXECO_1C,
 def : InstRW<[P9_IntDivAndALUOp_26C_8, IP_EXECE_1C, IP_EXECO_1C, IP_EXEC_1C,
               DISP_1C, DISP_1C, DISP_1C, DISP_1C, DISP_1C],
       (instrs
+    DIVDo,
+    DIVDUo,
     DIVWEo,
     DIVWEUo
 )>;
@@ -872,6 +886,13 @@ def : InstRW<[P9_DP_33C_8, IP_EXEC_1C, D
     FDIV
 )>;
 
+// 33 Cycle DP Instruction Restricted and Cracked with 2 Cycle ALU.
+def : InstRW<[P9_DPOpAndALUOp_35C_8, IP_EXEC_1C, IP_EXEC_1C,
+              DISP_1C, DISP_1C, DISP_1C, DISP_1C, DISP_1C],
+      (instrs
+    FDIVo
+)>;
+
 // 33 Cycle DP Instruction. Takes one slice and 2 dispatches.
 def : InstRW<[P9_DP_33C_8, IP_EXEC_1C, DISP_1C, DISP_1C],
       (instrs
@@ -884,6 +905,13 @@ def : InstRW<[P9_DP_22C_5, IP_EXEC_1C, D
     FDIVS
 )>;
 
+// 22 Cycle DP Instruction Restricted and Cracked with 2 Cycle ALU.
+def : InstRW<[P9_DPOpAndALUOp_24C_5, IP_EXEC_1C, IP_EXEC_1C,
+              DISP_1C, DISP_1C, DISP_1C, DISP_1C, DISP_1C],
+      (instrs
+    FDIVSo
+)>;
+
 // 22 Cycle DP Instruction. Takes one slice and 2 dispatches.
 def : InstRW<[P9_DP_22C_5, IP_EXEC_1C, DISP_1C, DISP_1C],
       (instrs

Modified: llvm/trunk/lib/Target/PowerPC/PPCScheduleP9.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCScheduleP9.td?rev=315313&r1=315312&r2=315313&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCScheduleP9.td (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCScheduleP9.td Tue Oct 10 06:45:35 2017
@@ -22,7 +22,7 @@ def P9Model : SchedMachineModel {
   // Try to make sure we have at least 10 dispatch groups in a loop.
   let LoopMicroOpBufferSize = 60;
 
-  let CompleteModel = 0;
+  let CompleteModel = 1;
 
   let UnsupportedFeatures = [HasQPX];
 
@@ -301,6 +301,9 @@ let SchedModel = P9Model in {
   def P9_IntDivAndALUOp_42C_8 : WriteSequence<[P9_DIV_40C_8, P9_ALU_2C]>;
   def P9_StoreAndALUOp_4C : WriteSequence<[P9_LS_1C, P9_ALU_3C]>;
   def P9_ALUOpAndALUOp_4C : WriteSequence<[P9_ALU_2C, P9_ALU_2C]>;
+  def P9_DPOpAndALUOp_9C : WriteSequence<[P9_DP_7C, P9_ALU_2C]>;
+  def P9_DPOpAndALUOp_24C_5 : WriteSequence<[P9_DP_22C_5, P9_ALU_2C]>;
+  def P9_DPOpAndALUOp_35C_8 : WriteSequence<[P9_DP_33C_8, P9_ALU_2C]>;
 
   // ***************** Defining Itinerary Class Resources *****************