created a proj in quartus 6.0 upgrding to 9.0 compile problem

thanks for reply,

i have selected timequest and generated <>.sdc file from sdc gui with older settings. but i cont found critical path report,it showing only setup,hold slack timings.

guide me to find critical path.

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ihave a doubt that timing analyzers are only for showing reports or for auto optimization of code also?

it is running after assembler, so where is the point of timing optimization of the code? or fitter only itself optimizes?

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thanks in advance