[Patch,microblaze]: Optimized usage of fint instruction.

[Michael Eager]

On 03/04/2015 08:20 AM, Michael Eager wrote:
> On 03/04/15 03:53, Ajit Kumar Agarwal wrote:
>>
>>
>> -----Original Message-----
>> From: Michael Eager [mailto:eager@eagerm.com]
>> Sent: Thursday, February 26, 2015 4:33 AM
>> To: Ajit Kumar Agarwal; GCC Patches
>> Cc: Vinod Kathail; Shail Aditya Gupta; Vidhumouli Hunsigida; Nagaraju Mekala
>> Subject: Re: [Patch,microblaze]: Optimized usage of fint instruction.
>>
>> On 02/25/15 02:20, Ajit Kumar Agarwal wrote:
>>> Hello All:
>>>
>>> Please find the patch for the optimized usage of fint instruction
>>> changes. No regression is seen in the deja GNU tests.
>>>
>>> commit ed4dc0b96bf43c200cacad97f73a98ab7048e51b
>>> Author: Ajit Kumar Agarwal <ajitkum@xhdspdgnu.(none)>
>>> Date:   Wed Feb 25 15:36:29 2015 +0530
>>>
>>>       [Patch,microblaze]: Optimized usage of fint instruction.
>>>
>>>       The changes are made in the patch for optimized usage of fint instruction.
>>>       The sequence of fint/cond_branch is replaced with fcmp/cond_branch. The
>>>       fint instruction takes 6/7 cycles as compared to fcmp instruction which
>>>       takes 1 cycles. The conversion from float to int with fint instruction
>>>       is not required and can directly compared with fcmp instruction which
>>>       takes 1 cycle as compared to 6/7 cycles with fint instruction.
>>>
>>>       ChangeLog:
>>>       2015-02-25  Ajit Agarwal  <ajitkum@xilinx.com>
>>>
>>>           * config/microblaze/microblaze.md (peephole2): New.
>>
>>>
>> +    emit_insn (gen_cstoresf4 (comp_reg, operands[2],
>> +                              gen_rtx_REG(SFmode,REGNO(cmp_op0)),
>> +                              gen_rtx_REG(SFmode,REGNO(cmp_op1))));
>>
>>>> Spaces before left parens and after comma in last two lines.
>>
>> Changes are incorporated. Please find the log for updated patch.
>>
>> commit 492b0d0b67a5b12d2dc239de3215630c8838edea
>> Author: Ajit Kumar Agarwal <ajitkum@xhdspdgnu.(none)>
>> Date:   Wed Mar 4 17:15:16 2015 +0530
>>
>>      [Patch,microblaze]: Optimized usage of fint instruction.
>>
>>      The changes are made in the patch for optimized usage of fint instruction.
>>      The sequence of fint/cond_branch is replaced with fcmp/cond_branch. The
>>      fint instruction takes 6/7 cycles as compared to fcmp instruction which
>>      takes 1 cycles. The conversion from float to int with fint instruction
>>      is not required and can directly compared with fcmp instruction which
>>      takes 1 cycle as compared to 6/7 cycles with fint instruction.
>>
>>      ChangeLog:
>>      2015-03-04  Ajit Agarwal  <ajitkum@xilinx.com>
>>
>>          * config/microblaze/microblaze.md (peephole2): New.
>>
>>      Signed-off-by:Ajit Agarwal ajitkum@xilinx.com
>>
>> Thanks & Regards
>> Ajit
>
> OK.

Committed revision 222790.


-- 
Michael Eager	 eager@eagercon.com
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