===================================================================
@@ -393,6 +393,9 @@
;; The integer modes up to word size
(define_mode_iterator QHSI [QI HI SI])
+;; The integer modes below word size
+(define_mode_iterator QHI [QI HI])
+
;;---------------------------------------------------------------------------
;; Predicates
@@ -6686,6 +6689,63 @@
(const_int 8))))]
)
+(define_mode_attr mode_lshift [(QI "24") (HI "16")])
+
+(define_insn "cbranch<mode>4_insn"
+ [(set (pc) (if_then_else
+ (match_operator 0 "arm_comparison_operator"
+ [(match_operand:QHI 1 "s_register_operand" "l")
+ (const_int 0)])
+ (label_ref (match_operand 2 "" ""))
+ (pc)))
+ (clobber (match_scratch:QHI 3 "=l"))]
+ "TARGET_THUMB1"
+{
+ int len = get_attr_length (insn);
+ output_asm_insn ("lsl\t%3, %1, #<mode_lshift>", operands);
+
+ if (!noov_comparison_operator (operands[0], VOIDmode))
+ {
+ output_asm_insn ("cmp\t%3, #0", operands);
+ len -= 2;
+ }
+
+ switch (len)
+ {
+ case 4: return "b%d0\t%l2";
+ case 6: return "b%D0\t.LCB%=\;b\t%l2\t%@long jump\n.LCB%=:";
+ default: return "b%D0\t.LCB%=\;bl\t%l2\t%@far jump\n.LCB%=:";
+ }
+}
+ [(set (attr "far_jump")
+ (if_then_else
+ (ior (and (match_operand 0 "noov_comparison_operator")
+ (eq_attr "length" "8"))
+ (eq_attr "length" "10"))
+ (const_string "yes")
+ (const_string "no")))
+ (set (attr "length")
+ (if_then_else
+ (match_operand 0 "noov_comparison_operator")
+ (if_then_else
+ (and (ge (minus (match_dup 2) (pc)) (const_int -250))
+ (le (minus (match_dup 2) (pc)) (const_int 256)))
+ (const_int 4)
+ (if_then_else
+ (and (ge (minus (match_dup 2) (pc)) (const_int -2040))
+ (le (minus (match_dup 2) (pc)) (const_int 2048)))
+ (const_int 6)
+ (const_int 8)))
+ (if_then_else
+ (and (ge (minus (match_dup 2) (pc)) (const_int -248))
+ (le (minus (match_dup 2) (pc)) (const_int 256)))
+ (const_int 6)
+ (if_then_else
+ (and (ge (minus (match_dup 2) (pc)) (const_int -2038))
+ (le (minus (match_dup 2) (pc)) (const_int 2048)))
+ (const_int 8)
+ (const_int 10)))))])
+
(define_insn "cbranchsi4_scratch"
[(set (pc) (if_then_else
(match_operator 4 "arm_comparison_operator"
===================================================================
@@ -235,6 +235,9 @@
(define_special_predicate "lt_ge_comparison_operator"
(match_code "lt,ge"))
+(define_special_predicate "noov_comparison_operator"
+ (match_code "lt,ge,eq,ne"))
+
(define_special_predicate "minmax_operator"
(and (match_code "smin,smax,umin,umax")
(match_test "mode == GET_MODE (op)")))