TLABWasteIncrement is loaded as 16 bit immediate, but can be bigger.
This was seen when running TestOptionsWithRanges without G1. With G1, the code is not used. So I also fix the test to run without G1. Then we see an assertion in the debug build.
This was seen when running TestOptionsWithRanges without G1. With G1, the code is not used. So I also fix the test to run without G1. Then we see an assertion in the debug build.