PPC: Add new relocation type WASM_MEMORY_SIZE_REFERENCE, use relocatable pointers to update wasm me…

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 044608813fe389a12b65b99e99154de22e88dbf7..ebbecf8b48894aff09111b864caa22a76bb5d513 100644
--- a/src/compiler/ppc/code-generator-ppc.cc
+++ b/src/compiler/ppc/code-generator-ppc.cc
@@ -1924,21 +1924,23 @@ void CodeGenerator::AssembleMove(InstructionOperand* source,
           destination->IsRegister() ? g.ToRegister(destination) : kScratchReg;
       switch (src.type()) {
         case Constant::kInt32:
-#if !V8_TARGET_ARCH_PPC64
-          if (src.rmode() == RelocInfo::WASM_MEMORY_REFERENCE) {
+#if V8_TARGET_ARCH_PPC64
+          if (src.rmode() == RelocInfo::WASM_MEMORY_SIZE_REFERENCE) {
+#else
+          if (src.rmode() == RelocInfo::WASM_MEMORY_REFERENCE ||
+              src.rmode() == RelocInfo::WASM_MEMORY_SIZE_REFERENCE) {
+#endif
             __ mov(dst, Operand(src.ToInt32(), src.rmode()));
           } else {
-#endif
             __ mov(dst, Operand(src.ToInt32()));
-#if !V8_TARGET_ARCH_PPC64
           }
-#endif
           break;
         case Constant::kInt64:
 #if V8_TARGET_ARCH_PPC64
           if (src.rmode() == RelocInfo::WASM_MEMORY_REFERENCE) {
             __ mov(dst, Operand(src.ToInt64(), src.rmode()));
           } else {
+            DCHECK(src.rmode() != RelocInfo::WASM_MEMORY_SIZE_REFERENCE);
 #endif
             __ mov(dst, Operand(src.ToInt64()));
 #if V8_TARGET_ARCH_PPC64