PPC: Split kPPC_Add into kPPC_Add[32|64]

src/compiler/ppc/code-generator-ppc.cc

Index: src/compiler/ppc/code-generator-ppc.cc
diff --git a/src/compiler/ppc/code-generator-ppc.cc b/src/compiler/ppc/code-generator-ppc.cc
index a838ede47c37aff888b2ef033aa78d0ae9cc9e8b..d7232bf3f9f558badc48aa6a98c047086b029091 100644
--- a/src/compiler/ppc/code-generator-ppc.cc
+++ b/src/compiler/ppc/code-generator-ppc.cc
@@ -263,7 +263,8 @@ Condition FlagsConditionToCondition(FlagsCondition condition, ArchOpcode op) {
       // Overflow checked for add/sub only.
       switch (op) {
 #if V8_TARGET_ARCH_PPC64
-        case kPPC_Add:
+        case kPPC_Add32:
+        case kPPC_Add64:
         case kPPC_Sub:
 #endif
         case kPPC_AddWithOverflow32:
@@ -276,7 +277,8 @@ Condition FlagsConditionToCondition(FlagsCondition condition, ArchOpcode op) {
     case kNotOverflow:
       switch (op) {
 #if V8_TARGET_ARCH_PPC64
-        case kPPC_Add:
+        case kPPC_Add32:
+        case kPPC_Add64:
         case kPPC_Sub:
 #endif
         case kPPC_AddWithOverflow32:
@@ -1322,7 +1324,7 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
                 63 - i.InputInt32(2), i.OutputRCBit());
       break;
 #endif
-    case kPPC_Add:
+    case kPPC_Add32:
 #if V8_TARGET_ARCH_PPC64
       if (FlagsModeField::decode(instr->opcode()) != kFlags_none) {
         ASSEMBLE_ADD_WITH_OVERFLOW();
@@ -1335,10 +1337,26 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
           __ addi(i.OutputRegister(), i.InputRegister(0), i.InputImmediate(1));
           DCHECK_EQ(LeaveRC, i.OutputRCBit());
         }
+        __ extsw(i.OutputRegister(), i.OutputRegister());
 #if V8_TARGET_ARCH_PPC64
       }
 #endif
       break;
+#if V8_TARGET_ARCH_PPC64
+    case kPPC_Add64:
+      if (FlagsModeField::decode(instr->opcode()) != kFlags_none) {
+        ASSEMBLE_ADD_WITH_OVERFLOW();
+      } else {
+        if (HasRegisterInput(instr, 1)) {
+          __ add(i.OutputRegister(), i.InputRegister(0), i.InputRegister(1),
+                 LeaveOE, i.OutputRCBit());
+        } else {
+          __ addi(i.OutputRegister(), i.InputRegister(0), i.InputImmediate(1));
+          DCHECK_EQ(LeaveRC, i.OutputRCBit());
+        }
+      }
+      break;
+#endif
     case kPPC_AddWithOverflow32:
       ASSEMBLE_ADD_WITH_OVERFLOW32();
       break;