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target-insns.def (clear_cache): New targetm instruction pattern.

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gcc/
	* target-insns.def (clear_cache): New targetm instruction pattern.
	* builtins.c (expand_builtin___clear_cache): Use it instead of
	HAVE_*/gen_* interface.

From-SVN: r225430
This commit is contained in:
Richard Sandiford 2015-07-05 07:59:14 +00:00 committed by Richard Sandiford
parent 10169a8b99
commit f2cf13bd7c
3 changed files with 21 additions and 13 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2015-07-05 Richard Sandiford <richard.sandiford@arm.com>
* target-insns.def (clear_cache): New targetm instruction pattern.
* builtins.c (expand_builtin___clear_cache): Use it instead of
HAVE_*/gen_* interface.
2015-07-05 Richard Sandiford <richard.sandiford@arm.com>
* target-insns.def (allocate_stack, check_stack, probe_stack)

27
gcc/builtins.c
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@ -4807,20 +4807,22 @@ expand_builtin_copysign (tree exp, rtx target, rtx subtarget)
/* Expand a call to __builtin___clear_cache. */
static rtx
expand_builtin___clear_cache (tree exp ATTRIBUTE_UNUSED)
expand_builtin___clear_cache (tree exp)
{
#ifndef HAVE_clear_cache
if (!targetm.code_for_clear_cache)
{
#ifdef CLEAR_INSN_CACHE
/* There is no "clear_cache" insn, and __clear_cache() in libgcc
does something. Just do the default expansion to a call to
__clear_cache(). */
return NULL_RTX;
/* There is no "clear_cache" insn, and __clear_cache() in libgcc
does something. Just do the default expansion to a call to
__clear_cache(). */
return NULL_RTX;
#else
/* There is no "clear_cache" insn, and __clear_cache() in libgcc
does nothing. There is no need to call it. Do nothing. */
return const0_rtx;
/* There is no "clear_cache" insn, and __clear_cache() in libgcc
does nothing. There is no need to call it. Do nothing. */
return const0_rtx;
#endif /* CLEAR_INSN_CACHE */
#else
}
/* We have a "clear_cache" insn, and it will handle everything. */
tree begin, end;
rtx begin_rtx, end_rtx;
@ -4834,7 +4836,7 @@ expand_builtin___clear_cache (tree exp ATTRIBUTE_UNUSED)
return const0_rtx;
}
if (HAVE_clear_cache)
if (targetm.have_clear_cache ())
{
struct expand_operand ops[2];
@ -4846,11 +4848,10 @@ expand_builtin___clear_cache (tree exp ATTRIBUTE_UNUSED)
create_address_operand (&ops[0], begin_rtx);
create_address_operand (&ops[1], end_rtx);
if (maybe_expand_insn (CODE_FOR_clear_cache, 2, ops))
if (maybe_expand_insn (targetm.code_for_clear_cache, 2, ops))
return const0_rtx;
}
return const0_rtx;
#endif /* HAVE_clear_cache */
}
/* Given a trampoline address, make sure it satisfies TRAMPOLINE_ALIGNMENT. */

1
gcc/target-insns.def
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@ -37,6 +37,7 @@ DEF_TARGET_INSN (builtin_setjmp_setup, (rtx x0))
DEF_TARGET_INSN (canonicalize_funcptr_for_compare, (rtx x0, rtx x1))
DEF_TARGET_INSN (casesi, (rtx x0, rtx x1, rtx x2, rtx x3, rtx x4))
DEF_TARGET_INSN (check_stack, (rtx x0))
DEF_TARGET_INSN (clear_cache, (rtx x0, rtx x1))
DEF_TARGET_INSN (epilogue, (void))
DEF_TARGET_INSN (exception_receiver, (void))
DEF_TARGET_INSN (jump, (rtx x0))