operands[5] = hppa_compare_op1;
}")
-; We need the first constraint alternative in order to avoid
-; earlyclobbers on all other alternatives.
+;; We used to accept any register for op1.
+;;
+;; However, it loses sometimes because the compiler will end up using
+;; different registers for op0 and op1 in some critical cases. local-alloc
+;; will not tie op0 and op1 because op0 is used in multiple basic blocks.
+;;
+;; If/when global register allocation supports tying we should allow any
+;; register for op1 again.
(define_insn ""
- [(set (match_operand:SI 0 "register_operand" "=r,r,r,r,r")
+ [(set (match_operand:SI 0 "register_operand" "=r,r,r,r")
(if_then_else:SI
(match_operator 5 "comparison_operator"
- [(match_operand:SI 3 "register_operand" "r,r,r,r,r")
- (match_operand:SI 4 "arith11_operand" "rI,rI,rI,rI,rI")])
- (match_operand:SI 1 "reg_or_cint_move_operand" "0,r,J,N,K")
+ [(match_operand:SI 3 "register_operand" "r,r,r,r")
+ (match_operand:SI 4 "arith11_operand" "rI,rI,rI,rI")])
+ (match_operand:SI 1 "reg_or_cint_move_operand" "0,J,N,K")
(const_int 0)))]
""
"@
{com%I4clr|cmp%I4clr},%S5 %4,%3,%%r0\;ldi 0,%0
- {com%I4clr|cmp%I4clr},%B5 %4,%3,%0\;copy %1,%0
{com%I4clr|cmp%I4clr},%B5 %4,%3,%0\;ldi %1,%0
{com%I4clr|cmp%I4clr},%B5 %4,%3,%0\;ldil L'%1,%0
{com%I4clr|cmp%I4clr},%B5 %4,%3,%0\;{zdepi|depwi,z} %Z1,%0"
- [(set_attr "type" "multi,multi,multi,multi,nullshift")
- (set_attr "length" "8,8,8,8,8")])
+ [(set_attr "type" "multi,multi,multi,nullshift")
+ (set_attr "length" "8,8,8,8")])
(define_insn ""
[(set (match_operand:SI 0 "register_operand" "=r,r,r,r,r,r,r,r")