how to get the .dfa output file in gcc

how to get the .dfa output file in gcc

[ddmetro]

Hi All,

We are trying to get the .dfa output file, showing details about the
automaton constructed for - instruction scheduling, using pipeline hazard
detector. However we are unable to do so.

We tried
(a.)uncommenting - (automata_option "v") - in ia64.md file
(b.)adding v_flag = 1 in gen_automata_option() function of genautomata.c
file
and running: make insn-automata.c

None of these gave a .dfa output file.
 
Target language for which optimization is being done: C
Target machine architecture: i686
GCC version: 4.4.1

Kindly help us with our issue.

Thanking All
-Dhiraj

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Re: how to get the .dfa output file in gcc

[ddmetro]

Hi All,
         Got the output i386.dfa file in the location -
{$gcc_home}/host-i686-pc-linux-gnu/gcc.
         Followed 2 steps:
1. In the initiate_automaton_gen() function of 'genautomata.c', initialize
the v_flag variable to 1 i.e., v_flag = 1;
2. Build target 'insn-automata.c'.

-Dhiraj
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Re: how to get the .dfa output file in gcc

[Ben Elliston]

On Sat, 2009-10-03 at 11:37 -0700, ddmetro wrote:

> 1. In the initiate_automaton_gen() function of 'genautomata.c', initialize
> the v_flag variable to 1 i.e., v_flag = 1;

It should not be necessary to do this.  Can you retry with the .md
syntax?

Ben