Displaying 2 results from an estimated 2 matches for "92c5be11".
2014 Jul 30
2
[LLVMdev] FPOpFusion = Fast and Multiply-and-add combines
Hi all,
The AllowFPOpFusion option passed to a target can currently take 3
different values, Fast, Standard or Strict (TargetOptions.h), being
Standard the default.
In the DAGCombiner, during the combination of mul and add/subtract into
multiply-and-add/subtract, this option is expected to be Fast in order to
enable the combine. This means, that by default no multiply-and-add opcodes
are going
2014 Jul 31
2
[LLVMdev] FPOpFusion = Fast and Multiply-and-add combines
...a that it's not
> usually OK to fuse them (i.e. not Fast mode), but this particular one
> actually is OK.
>
> Cheers.
>
> Tim.
>
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