RFR: JDK-8219486: Missing reg_mask_init() breaks x86_32 build

[Roman Kennke]

I don't think so, otherwise it would have caught the original change.

> Does jdk/submit test 32bit?
> 
> dl
> 
> On 2/20/19 12:41 PM, Roman Kennke wrote:
>> JDK-8217909 introduced a method reg_mask_init() which is defined only in
>> x86_64.ad, and thus breaks build (linkage) on x86_32.
>>
>> I propose to fix this by enclosing the function declaration and call in
>> #ifdef _LP64. Alternatively I could add an empty reg_mask_init() to
>> x86_32.ad, but I don't like empty code very much. We might want to
>> consider to do the with_rbp/no_rbp stuff in x86_32.ad later though. I
>> don't have enough time & interest to do it right now.
>>
>> Bug:
>> https://bugs.openjdk.java.net/browse/JDK-8219486
>> Webrev:
>> http://cr.openjdk.java.net/~rkennke/JDK-8219486/webrev.00/
>>
>> Testing: built 32bit locally, will push through jdk/submit in a minute
>>
>> Ok?
>>
>> Roman
>>
> 

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