Request for reviews (M): 7059034: Use movxtod/movdtox on T4
vladimir.kozlov at oracle.com
Thu Jul 7 09:37:18 PDT 2011
Thank you, Tom
Tom Rodriguez wrote:
> These look good.
> On Jul 6, 2011, at 4:04 PM, Vladimir Kozlov wrote:
>> Fixed 7059034: Use movxtod/movdtox on T4
>> Currently VM uses stack to move data between general and float registers on Sparc. Use new VIS3 mov instructions on T4 for such moves.
>> I removed R_F30,R_F31 from dflt_low_reg since they used as temps (see line 412).
>> Also fixed float<->integer conversion instructions since they used incorrect Width for float register encoding. For example, encoding failed for next instr ftoi(FloatRegisterImpl::D,F4,F1) and fitof(FloatRegisterImpl::D,F1,F8).
>> Tested with CTW, nsk.
>> I attached microbenchmark test to the bug report.
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