[turbofan] Run everything after representation selection concurrently.

src/ia32/macro-assembler-ia32.h

Index: src/ia32/macro-assembler-ia32.h
diff --git a/src/ia32/macro-assembler-ia32.h b/src/ia32/macro-assembler-ia32.h
index 82046465225e437f7592d77a2664ebdf3cd25a14..8f3dd0e145353407a3dacbc26f773cd0765ac974 100644
--- a/src/ia32/macro-assembler-ia32.h
+++ b/src/ia32/macro-assembler-ia32.h
@@ -19,6 +19,7 @@ const Register kReturnRegister1 = {Register::kCode_edx};
 const Register kReturnRegister2 = {Register::kCode_edi};
 const Register kJSFunctionRegister = {Register::kCode_edi};
 const Register kContextRegister = {Register::kCode_esi};
+const Register kAllocateSizeRegister = {Register::kCode_edx};
 const Register kInterpreterAccumulatorRegister = {Register::kCode_eax};
 const Register kInterpreterBytecodeOffsetRegister = {Register::kCode_ecx};
 const Register kInterpreterBytecodeArrayRegister = {Register::kCode_edi};