[llvm-commits] [llvm] r72567 - /llvm/trunk/lib/Transforms/Scalar/GVN.cpp

[Török Edwin]

On 2009-05-29 18:30, Chris Lattner wrote:
> On May 29, 2009, at 3:28 AM, Torok Edwin wrote:
>
>   
>> Author: edwin
>> Date: Fri May 29 05:28:44 2009
>> New Revision: 72567
>>
>> URL: http://llvm.org/viewvc/llvm-project?rev=72567&view=rev
>> Log:
>> for instructions with void type we have no choice but print the  
>> instruction as
>> is, otherwise we get a <badref>.
>>     
>
> Hi Edwin, would it make sense to print the clobbering instruction as  
> an instruction, instead of as an operand?

It would, but for some reason printing lots of instructions as
instructions is very slow for me.
I haven't tried with GVN, but with my own pass printing all the
instructions in a module is very slow for example.
Printing SCEV expressions is slow too. Has this ever happened to you?
The difference I'm talking about is several minutes vs. just a few
seconds when printing with WriteAsOperand.

GVN may not print that many instructions, so I think I could just print
the instruction.

Best regards,
--Edwin