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flow.c (REVERSE_CONDEXEC_PREDICATES_P): Use the whole comparison, not just the codes, call reversed_comparison_code ().

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* flow.c (REVERSE_CONDEXEC_PREDICATES_P): Use the whole comparison, not
just the codes, call reversed_comparison_code ().
(ior_reg_cond): Update arguments to REVERSE_CONDEXEC_PREDICATES_P.
(not_reg_cond): Use reversed_comparison_code.
(and_reg_cond): Likewise.
* ifcvt.c (cond_exec_process_if_block): Likewise.
* doc/tm.texi (REVERSE_CONDEXEC_PREDICATES_P): Update documentation.

From-SVN: r86737
This commit is contained in:
Richard Earnshaw 2004-08-29 22:10:44 +00:00 committed by Richard Earnshaw
parent 6903ecd491
commit 15dce8121c
4 changed files with 28 additions and 18 deletions
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10
gcc/ChangeLog
View File

@ -1,3 +1,13 @@
2004-08-29 Richard Earnshaw <rearnsha@arm.com>
* flow.c (REVERSE_CONDEXEC_PREDICATES_P): Use the whole comparison, not
just the codes, call reversed_comparison_code ().
(ior_reg_cond): Update arguments to REVERSE_CONDEXEC_PREDICATES_P.
(not_reg_cond): Use reversed_comparison_code.
(and_reg_cond): Likewise.
* ifcvt.c (cond_exec_process_if_block): Likewise.
* doc/tm.texi (REVERSE_CONDEXEC_PREDICATES_P): Update documentation.
2004-08-29 Richard Earnshaw <rearnsha@arm.com>
* sched-deps.c (get_condition): Rewrite using jump support functions.

13
gcc/doc/tm.texi
View File

@ -5240,16 +5240,17 @@ like:
@end smallexample
@end defmac
@defmac REVERSE_CONDEXEC_PREDICATES_P (@var{code1}, @var{code2})
@defmac REVERSE_CONDEXEC_PREDICATES_P (@var{op1}, @var{op2})
A C expression that returns true if the conditional execution predicate
@var{code1} is the inverse of @var{code2} and vice versa. Define this to
return 0 if the target has conditional execution predicates that cannot be
reversed safely. If no expansion is specified, this macro is defined as
follows:
@var{op1}, a comparison operation, is the inverse of @var{op2} and vice
versa. Define this to return 0 if the target has conditional execution
predicates that cannot be reversed safely. There is no need to validate
that the arguments of op1 and op2 are the same, this is done separately.
If no expansion is specified, this macro is defined as follows:
@smallexample
#define REVERSE_CONDEXEC_PREDICATES_P (x, y) \
((x) == reverse_condition (y))
(GET_CODE ((x)) == reversed_comparison_code ((y), NULL))
@end smallexample
@end defmac

14
gcc/flow.c
View File

@ -160,7 +160,8 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
#ifdef HAVE_conditional_execution
#ifndef REVERSE_CONDEXEC_PREDICATES_P
#define REVERSE_CONDEXEC_PREDICATES_P(x, y) ((x) == reverse_condition (y))
#define REVERSE_CONDEXEC_PREDICATES_P(x, y) \
(GET_CODE ((x)) == reversed_comparison_code ((y), NULL))
#endif
#endif
@ -2996,7 +2997,7 @@ ior_reg_cond (rtx old, rtx x, int add)
if (COMPARISON_P (old))
{
if (COMPARISON_P (x)
&& REVERSE_CONDEXEC_PREDICATES_P (GET_CODE (x), GET_CODE (old))
&& REVERSE_CONDEXEC_PREDICATES_P (x, old)
&& REGNO (XEXP (x, 0)) == REGNO (XEXP (old, 0)))
return const1_rtx;
if (GET_CODE (x) == GET_CODE (old)
@ -3079,14 +3080,11 @@ ior_reg_cond (rtx old, rtx x, int add)
static rtx
not_reg_cond (rtx x)
{
enum rtx_code x_code;
if (x == const0_rtx)
return const1_rtx;
else if (x == const1_rtx)
return const0_rtx;
x_code = GET_CODE (x);
if (x_code == NOT)
if (GET_CODE (x) == NOT)
return XEXP (x, 0);
if (COMPARISON_P (x)
&& REG_P (XEXP (x, 0)))
@ -3094,7 +3092,7 @@ not_reg_cond (rtx x)
if (XEXP (x, 1) != const0_rtx)
abort ();
return gen_rtx_fmt_ee (reverse_condition (x_code),
return gen_rtx_fmt_ee (reversed_comparison_code (x, NULL),
VOIDmode, XEXP (x, 0), const0_rtx);
}
return gen_rtx_NOT (0, x);
@ -3108,7 +3106,7 @@ and_reg_cond (rtx old, rtx x, int add)
if (COMPARISON_P (old))
{
if (COMPARISON_P (x)
&& GET_CODE (x) == reverse_condition (GET_CODE (old))
&& GET_CODE (x) == reversed_comparison_code (old, NULL)
&& REGNO (XEXP (x, 0)) == REGNO (XEXP (old, 0)))
return const0_rtx;
if (GET_CODE (x) == GET_CODE (old)

9
gcc/ifcvt.c
View File

@ -491,6 +491,7 @@ cond_exec_process_if_block (ce_if_block_t * ce_info,
{
rtx start, end;
rtx t, f;
enum rtx_code f_code;
bb = block_fallthru (bb);
start = first_active_insn (bb);
@ -510,11 +511,11 @@ cond_exec_process_if_block (ce_if_block_t * ce_info,
if (! t)
goto fail;
f = gen_rtx_fmt_ee (reverse_condition (GET_CODE (t)),
GET_MODE (t),
XEXP (t, 0),
XEXP (t, 1));
f_code = reversed_comparison_code (t, BB_END (bb));
if (f_code == UNKNOWN)
goto fail;
f = gen_rtx_fmt_ee (f_code, GET_MODE (t), XEXP (t, 0), XEXP (t, 1));
if (ce_info->and_and_p)
{
t = gen_rtx_AND (GET_MODE (t), true_expr, t);