PPC: [wasm] Int64Lowering of Int64Add.

src/ppc/assembler-ppc.cc

Index: src/ppc/assembler-ppc.cc
diff --git a/src/ppc/assembler-ppc.cc b/src/ppc/assembler-ppc.cc
index aed149bcab43403517c2d8a3f6b87124b194f13e..b70af66b014f9024546ee9cfc084d51a55f8087e 100644
--- a/src/ppc/assembler-ppc.cc
+++ b/src/ppc/assembler-ppc.cc
@@ -849,6 +849,10 @@ void Assembler::addc(Register dst, Register src1, Register src2, OEBit o,
   xo_form(EXT2 | ADDCX, dst, src1, src2, o, r);
 }
 
+void Assembler::adde(Register dst, Register src1, Register src2, OEBit o,
+                     RCBit r) {
+  xo_form(EXT2 | ADDEX, dst, src1, src2, o, r);
+}
 
 void Assembler::addze(Register dst, Register src1, OEBit o, RCBit r) {
   // a special xo_form