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resource.c (mark_set_resources): Handle UNSPEC_VOLATILE... 

* resource.c (mark_set_resources): Handle UNSPEC_VOLATILE,
	ASM_INPUT, TRAP_IF, and ASM_OPERANDS just like in
	mark_referenced_resources.

From-SVN: r26769
This commit is contained in:
Mark Mitchell 1999-05-04 16:02:07 +00:00 committed by Mark Mitchell
parent 50e0211ea0
commit 3d298f8f0e
2 changed files with 28 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
Tue May 4 13:17:55 1999 Mark Mitchell <mark@codesourcery.com>
* resource.c (mark_set_resources): Handle UNSPEC_VOLATILE,
ASM_INPUT, TRAP_IF, and ASM_OPERANDS just like in
mark_referenced_resources.
Mon May 3 22:38:41 1999 David Edelsohn <edelsohn@gnu.org>
* rs6000/aix43.h (SUBTARGET_OVERRIDE_OPTIONS): Change non-PowerPC

22
gcc/resource.c
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@ -739,6 +739,28 @@ mark_set_resources (x, res, in_dest, include_delayed_effects)
SET_HARD_REG_BIT (res->regs, REGNO (x) + i);
return;
case UNSPEC_VOLATILE:
case ASM_INPUT:
/* Traditional asm's are always volatile. */
res->volatil = 1;
return;
case TRAP_IF:
res->volatil = 1;
break;
case ASM_OPERANDS:
res->volatil = MEM_VOLATILE_P (x);
/* For all ASM_OPERANDS, we must traverse the vector of input operands.
We can not just fall through here since then we would be confused
by the ASM_INPUT rtx inside ASM_OPERANDS, which do not indicate
traditional asms unlike their normal usage. */
for (i = 0; i < ASM_OPERANDS_INPUT_LENGTH (x); i++)
mark_set_resources (ASM_OPERANDS_INPUT (x, i), res, in_dest, 0);
return;
default:
break;
}