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i386.c (TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD): Define.

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* i386.c (TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD): Define.
        (ia32_multipass_dfa_lookahead): New function.

From-SVN: r53427
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Jeff Law 2002-05-13 13:54:24 -06:00 committed by Jeff Law
parent e4723404c1
commit 765b8f90f4
2 changed files with 20 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2002-05-13 Jeffrey A Law (law@redhat.com)
* i386.c (TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD): Define.
(ia32_multipass_dfa_lookahead): New function.
2002-05-13 Neil Booth <neil@daikokuya.demon.co.uk>
* gcc.c (SWITCH_TAKES_ARG): Remove 'V'.

15
gcc/config/i386/i386.c
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@ -48,6 +48,8 @@ static int ia32_use_dfa_pipeline_interface PARAMS ((void));
#undef TARGET_SCHED_USE_DFA_PIPELINE_INTERFACE
#define TARGET_SCHED_USE_DFA_PIPELINE_INTERFACE ia32_use_dfa_pipeline_interface
#undef TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD
#define TARGET_SCHED_FIRST_CYCLE_MULTIPASS_DFA_LOOKAHEAD ia32_multipass_dfa_lookahead
static int
ia32_use_dfa_pipeline_interface ()
@ -57,6 +59,19 @@ ia32_use_dfa_pipeline_interface ()
return 0;
}
/* How many alternative schedules to try. This should be as wide as the
scheduling freedom in the DFA, but no wider. Making this value too
large results extra work for the scheduler. */
static int
ia32_multipass_dfa_lookahead ()
{
if (ix86_cpu == PROCESSOR_PENTIUM)
return 2;
else
return 0;
}
#ifndef CHECK_STACK_LIMIT
#define CHECK_STACK_LIMIT (-1)
#endif