[LLVMdev] Instcombine increases the number of instructions?

[Duncan Sands]

Hi Rafael,

> I perform the Instcombine pass over Rijndael benchmark from Mibench ( suite of
> benchmarks). For compile, I use "-Instcount" for counting the instructions.
> Comparing the bench without transformation with the bench transformed by
> instcombine, I perceived a 10% of increase in the number of instructions. This
> is possible?

apparently so, otherwise you wouldn't be seeing it :)  Why don't you stick the
bitcode somewhere and provide instructions for reproducing this, otherwise it
is hard for us to make pertinent comments.

Ciao, Duncan.