s390: [wasm-simd] Implement Simd128 Load and Store

Change-Id: I01a449f098c7be3f1e071f57542dac6b67fb366d
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1944279Reviewed-by: Junliang Yan <jyan@ca.ibm.com>
Commit-Queue: Milad Farazmand <miladfar@ca.ibm.com>
Cr-Commit-Position: refs/heads/master@{#65294}

src/compiler/backend/s390/code-generator-s390.cc

@@ -2578,6 +2578,13 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
     case kS390_LoadDouble:
       ASSEMBLE_LOAD_FLOAT(LoadDouble);
       break;
+    case kS390_LoadSimd128: {
+      AddressingMode mode = kMode_None;
+      MemOperand operand = i.MemoryOperand(&mode);
+      __ vl(i.OutputSimd128Register(), operand, Condition(0));
+      EmitWordLoadPoisoningIfNeeded(this, instr, i);
+      break;
+    }
     case kS390_StoreWord8:
       ASSEMBLE_STORE_INTEGER(StoreByte);
       break;
@@ -2624,6 +2631,13 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
     case kS390_StoreDouble:
       ASSEMBLE_STORE_DOUBLE();
       break;
+    case kS390_StoreSimd128: {
+      size_t index = 0;
+      AddressingMode mode = kMode_None;
+      MemOperand operand = i.MemoryOperand(&mode, &index);
+      __ vst(i.InputSimd128Register(index), operand, Condition(0));
+      break;
+    }
     case kS390_Lay:
       __ lay(i.OutputRegister(), i.MemoryOperand());
       break;

src/compiler/backend/s390/instruction-codes-s390.h

@@ -196,7 +196,9 @@ namespace compiler {
   V(S390_Word64AtomicXorUint8)              \
   V(S390_Word64AtomicXorUint16)             \
   V(S390_Word64AtomicXorUint32)             \
-  V(S390_Word64AtomicXorUint64)
+  V(S390_Word64AtomicXorUint64)             \
+  V(S390_StoreSimd128)                      \
+  V(S390_LoadSimd128)
 
 // Addressing modes represent the "shape" of inputs to an instruction.
 // Many instructions support multiple addressing modes. Addressing modes

src/compiler/backend/s390/instruction-scheduler-s390.cc

@@ -154,6 +154,7 @@ int InstructionScheduler::GetTargetInstructionFlags(
     case kS390_LoadWord64:
     case kS390_LoadFloat32:
     case kS390_LoadDouble:
+    case kS390_LoadSimd128:
     case kS390_LoadReverse16:
     case kS390_LoadReverse32:
     case kS390_LoadReverse64:
@@ -170,6 +171,7 @@ int InstructionScheduler::GetTargetInstructionFlags(
     case kS390_StoreReverse64:
     case kS390_StoreFloat32:
     case kS390_StoreDouble:
+    case kS390_StoreSimd128:
     case kS390_Push:
     case kS390_PushFrame:
     case kS390_StoreToStackSlot:

src/compiler/backend/s390/instruction-selector-s390.cc

@@ -293,6 +293,9 @@ ArchOpcode SelectLoadOpcode(Node* node) {
     case MachineRepresentation::kWord32:
       opcode = kS390_LoadWordU32;
       break;
+    case MachineRepresentation::kSimd128:
+      opcode = kS390_LoadSimd128;
+      break;
 #if V8_TARGET_ARCH_S390X
     case MachineRepresentation::kTaggedSigned:   // Fall through.
     case MachineRepresentation::kTaggedPointer:  // Fall through.
@@ -305,7 +308,6 @@ ArchOpcode SelectLoadOpcode(Node* node) {
 #endif
     case MachineRepresentation::kCompressedPointer:  // Fall through.
     case MachineRepresentation::kCompressed:         // Fall through.
-    case MachineRepresentation::kSimd128:  // Fall through.
     case MachineRepresentation::kNone:
     default:
       UNREACHABLE();
@@ -766,6 +768,13 @@ static void VisitGeneralStore(
           value = value->InputAt(0);
         }
         break;
+      case MachineRepresentation::kSimd128:
+        opcode = kS390_StoreSimd128;
+        if (m.IsSimd128ReverseBytes()) {
+          opcode = kS390_StoreReverseSimd128;
+          value = value->InputAt(0);
+        }
+        break;
 #if V8_TARGET_ARCH_S390X
       case MachineRepresentation::kTaggedSigned:       // Fall through.
       case MachineRepresentation::kTaggedPointer:      // Fall through.
@@ -782,7 +791,6 @@ static void VisitGeneralStore(
 #else
       case MachineRepresentation::kWord64:  // Fall through.
 #endif
-      case MachineRepresentation::kSimd128:  // Fall through.
       case MachineRepresentation::kNone:
         UNREACHABLE();
         return;