Minor fix to original CL https://chromium-review.googlesource.com/527156
adding the cmp instr to set the condition code for 32bit.

R=joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com
BUG=
LOG=N

Review-Url: https://codereview.chromium.org/2934553002
Cr-Commit-Position: refs/heads/master@{#45828}