Ian Lance Taylor 7fd19291a5 runtime: adapt memory management to AIX mmap
On AIX:
    * mmap does not allow to map an already mapped range,
    * mmap range start at 0x30000000 for 32 bits processes,
    * mmap range start at 0x70000000_00000000 for 64 bits processes
    
    This is adapted from change 37845.
    
    Issue golang/go#19200
    
    Reviewed-on: https://go-review.googlesource.com/46772

From-SVN: r249713
2017-06-27 22:36:48 +00:00
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