ARC: Correct instruction length attributes.

This patch changes/corrects the "type" insn attribute on the SImode shift
by one bit instructions in arc.md: {ashl,lshr,ashr}si2_cnt1.  These insns
can use a compact representation, but the default method to determine the
"length" attribute of ARC instruction assumes that instructions of type
"shift" have two input operands, and therefore accesses operands[2].
For the shift by constant templates, a type attribute of "unary" is more
appropriate (when an explicit length isn't specified) to avoid an ICE.

2023-10-04  Roger Sayle  <roger@nextmovesoftware.com>

gcc/ChangeLog
	* config/arc/arc.md (ashlsi3_cnt1): Rename define_insn *ashlsi2_cnt1.
	Change type attribute to "unary", as this doesn't have operands[2].
	Change length attribute to "*,4" to allow compact representation.
	(lshrsi3_cnt1): Rename define_insn from *lshrsi3_cnt1.  Change
	insn type attribute to "unary", as this doesn't have operands[2].
	(ashrsi3_cnt1): Rename define_insn from *ashrsi3_cnt1.  Change
	insn type attribute to "unary", as this doesn't have operands[2].

0 files changed, 0 insertions, 0 deletions