Add basic instruction latency modeling for ia32 and x64 respectively.

The bigcore shares same instruction latency table as smallcore (ATOM).
The accurate latency modeling will benefit the instruction scheduler for
ia32 and x64 without introducing extra regression.

Review-Url: https://chromiumcodereview.appspot.com/2130153003
Cr-Commit-Position: refs/heads/master@{#40493}

src/compiler/ia32/instruction-scheduler-ia32.cc

@@ -146,8 +146,72 @@ int InstructionScheduler::GetTargetInstructionFlags(
 
 
 int InstructionScheduler::GetInstructionLatency(const Instruction* instr) {
-  // TODO(all): Add instruction cost modeling.
-  return 1;
+  // Basic latency modeling for ia32 instructions. They have been determined
+  // in an empirical way.
+  switch (instr->arch_opcode()) {
+    case kCheckedLoadInt8:
+    case kCheckedLoadUint8:
+    case kCheckedLoadInt16:
+    case kCheckedLoadUint16:
+    case kCheckedLoadWord32:
+    case kCheckedLoadFloat32:
+    case kCheckedLoadFloat64:
+    case kCheckedStoreWord8:
+    case kCheckedStoreWord16:
+    case kCheckedStoreWord32:
+    case kCheckedStoreFloat32:
+    case kCheckedStoreFloat64:
+    case kSSEFloat64Mul:
+      return 5;
+    case kIA32Imul:
+    case kIA32ImulHigh:
+      return 5;
+    case kSSEFloat32Cmp:
+    case kSSEFloat64Cmp:
+      return 9;
+    case kSSEFloat32Add:
+    case kSSEFloat32Sub:
+    case kSSEFloat32Abs:
+    case kSSEFloat32Neg:
+    case kSSEFloat64Add:
+    case kSSEFloat64Sub:
+    case kSSEFloat64Max:
+    case kSSEFloat64Min:
+    case kSSEFloat64Abs:
+    case kSSEFloat64Neg:
+      return 5;
+    case kSSEFloat32Mul:
+      return 4;
+    case kSSEFloat32ToFloat64:
+    case kSSEFloat64ToFloat32:
+      return 6;
+    case kSSEFloat32Round:
+    case kSSEFloat64Round:
+    case kSSEFloat32ToInt32:
+    case kSSEFloat64ToInt32:
+      return 8;
+    case kSSEFloat32ToUint32:
+      return 21;
+    case kSSEFloat64ToUint32:
+      return 15;
+    case kIA32Idiv:
+      return 33;
+    case kIA32Udiv:
+      return 26;
+    case kSSEFloat32Div:
+      return 35;
+    case kSSEFloat64Div:
+      return 63;
+    case kSSEFloat32Sqrt:
+    case kSSEFloat64Sqrt:
+      return 25;
+    case kSSEFloat64Mod:
+      return 50;
+    case kArchTruncateDoubleToI:
+      return 9;
+    default:
+      return 1;
+  }
 }
 
 }  // namespace compiler

src/compiler/x64/instruction-scheduler-x64.cc

@@ -194,8 +194,77 @@ int InstructionScheduler::GetTargetInstructionFlags(
 
 
 int InstructionScheduler::GetInstructionLatency(const Instruction* instr) {
-  // TODO(all): Add instruction cost modeling.
-  return 1;
+  // Basic latency modeling for x64 instructions. They have been determined
+  // in an empirical way.
+  switch (instr->arch_opcode()) {
+    case kCheckedLoadInt8:
+    case kCheckedLoadUint8:
+    case kCheckedLoadInt16:
+    case kCheckedLoadUint16:
+    case kCheckedLoadWord32:
+    case kCheckedLoadWord64:
+    case kCheckedLoadFloat32:
+    case kCheckedLoadFloat64:
+    case kCheckedStoreWord8:
+    case kCheckedStoreWord16:
+    case kCheckedStoreWord32:
+    case kCheckedStoreWord64:
+    case kCheckedStoreFloat32:
+    case kCheckedStoreFloat64:
+    case kSSEFloat64Mul:
+      return 5;
+    case kX64Imul:
+    case kX64Imul32:
+    case kX64ImulHigh32:
+    case kX64UmulHigh32:
+    case kSSEFloat32Cmp:
+    case kSSEFloat32Add:
+    case kSSEFloat32Sub:
+    case kSSEFloat32Abs:
+    case kSSEFloat32Neg:
+    case kSSEFloat64Cmp:
+    case kSSEFloat64Add:
+    case kSSEFloat64Sub:
+    case kSSEFloat64Max:
+    case kSSEFloat64Min:
+    case kSSEFloat64Abs:
+    case kSSEFloat64Neg:
+      return 3;
+    case kSSEFloat32Mul:
+    case kSSEFloat32ToFloat64:
+    case kSSEFloat64ToFloat32:
+    case kSSEFloat32Round:
+    case kSSEFloat64Round:
+    case kSSEFloat32ToInt32:
+    case kSSEFloat32ToUint32:
+    case kSSEFloat64ToInt32:
+    case kSSEFloat64ToUint32:
+      return 4;
+    case kX64Idiv:
+      return 49;
+    case kX64Idiv32:
+      return 35;
+    case kX64Udiv:
+      return 38;
+    case kX64Udiv32:
+      return 26;
+    case kSSEFloat32Div:
+    case kSSEFloat64Div:
+    case kSSEFloat32Sqrt:
+    case kSSEFloat64Sqrt:
+      return 13;
+    case kSSEFloat32ToInt64:
+    case kSSEFloat64ToInt64:
+    case kSSEFloat32ToUint64:
+    case kSSEFloat64ToUint64:
+      return 10;
+    case kSSEFloat64Mod:
+      return 50;
+    case kArchTruncateDoubleToI:
+      return 6;
+    default:
+      return 1;
+  }
 }
 
 }  // namespace compiler