re PR target/89434 (wrong code with -Og and __builtin_mul_overflow())

re PR target/89434 (wrong code with -Og and __builtin_mul_overflow())

	PR target/89434
	* config/arm/arm.md (*subsi3_carryin_const): Use
	arm_neg_immediate_operand predicate instead of
	arm_not_immediate_operand, "L" constraint instead of "K" and
	print it using %n2 instead of %B2.
	(*subsi3_carryin_const0): New define_insn.
	(*subsi3_carryin_compare_const): Use const_int_I_operand predicate
	instead of arm_not_operand and "I" constraint instead of "K" and
	print it using %n3 instead of %B2.  Instead of using match_dup 2 add
	another match_operand and in the condition check that it is negation
	of operands[2].
	(*subsi3_carryin_compare_const0): New define_ins.
	(*subdi_di_zesidi): Adjust to use *subsi3_carryin_const0 instead of
	*subsi3_carryin_const.
	(*arm_cmpdi_insn): Fix splitting into *subsi3_carryin_compare_const,
	split into *subsi3_carryin_compare_const0 if the highpart is zero.

	* gcc.c-torture/execute/pr89434.c: New test.

From-SVN: r269186