In test regress-492.js, the return sequence require to adjust sp to
sp + 513 * 8 bytes, which causes overflow of the displacement in LA.

R=michael_dawson@ca.ibm.com,mbrandy@us.ibm.com,joransiu@ca.ibm.com
BUG=

Review URL: https://codereview.chromium.org/1865443002

Cr-Commit-Position: refs/heads/master@{#35267}