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pa.h (INSN_SETS_ARE_DELAYED): Define for the PA.

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* pa.h (INSN_SETS_ARE_DELAYED): Define for the PA.  Sets and
	clobbers that occur in millicode insns are delayed effects.
	(INSN_REFERENCES_ARE_DELAYED): Likewise but for argument references
	occuring in millicode insns.

From-SVN: r3809
This commit is contained in:
Jeff Law 1993-03-20 20:44:15 -07:00
parent 742920c7bd
commit 72abf94189
1 changed files with 30 additions and 0 deletions
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30
gcc/config/pa/pa.h
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@ -1431,6 +1431,36 @@ while (0)
if (GET_CODE (INSN) == CALL_INSN \
|| (GET_CODE (INSN) == JUMP_INSN && ! simplejump_p (insn))) \
LENGTH += 1;
/* Millicode insns are actually function calls with some special
constraints on arguments and register usage.
Millicode calls always expect their arguments in the integer argument
registers, and always return their result in %r29 (ret1). They
are expected to clobber their arguments, %r1, %r29, and %r31 and
nothing else.
These macros tell reorg that the references to arguments and
register clobbers for millicode calls do not appear to happen
until after the millicode call. This allows reorg to put insns
which set the argument registers into the delay slot of the millicode
call -- thus they act more like traditional CALL_INSNs.
get_attr_type will try to recognize the given insn, so make sure to
filter out things it will not accept. SEQUENCE and USE insns in
particular. */
#define INSN_SETS_ARE_DELAYED(X) \
((GET_CODE (X) == INSN \
&& GET_CODE (PATTERN (X)) != SEQUENCE \
&& GET_CODE (PATTERN (X)) != USE \
&& get_attr_type (X) == TYPE_MILLI))
#define INSN_REFERENCES_ARE_DELAYED(X) \
((GET_CODE (X) == INSN \
&& GET_CODE (PATTERN (X)) != SEQUENCE \
&& GET_CODE (PATTERN (X)) != USE \
&& get_attr_type (X) == TYPE_MILLI))
/* Control the assembler format that we output. */