507 iv_add (struct rtx_iv *iv0, struct rtx_iv *iv1, enum rtx_code op)  in iv_add()  argument
516       && GET_MODE_SIZE (iv0->extend_mode) < GET_MODE_SIZE (iv1->extend_mode))  in iv_add()
518       iv0->extend_mode = iv1->extend_mode;  in iv_add()
522   if (iv1->extend == IV_UNKNOWN_EXTEND  in iv_add()
523       && iv1->mode == iv1->extend_mode  in iv_add()
524       && iv1->step == const0_rtx  in iv_add()
525       && GET_MODE_SIZE (iv1->extend_mode) < GET_MODE_SIZE (iv0->extend_mode))  in iv_add()
527       iv1->extend_mode = iv0->extend_mode;  in iv_add()
528       iv1->base = simplify_gen_unary (ZERO_EXTEND, iv1->extend_mode,  in iv_add()
529 				      iv1->base, iv1->mode);  in iv_add()
533   if (mode != iv1->extend_mode)  in iv_add()
537       && iv1->extend == IV_UNKNOWN_EXTEND)  in iv_add()
539       if (iv0->mode != iv1->mode)  in iv_add()
542       iv0->base = simplify_gen_binary (op, mode, iv0->base, iv1->base);  in iv_add()
543       iv0->step = simplify_gen_binary (op, mode, iv0->step, iv1->step);  in iv_add()
549   if (iv1->extend == IV_UNKNOWN_EXTEND  in iv_add()
550       && iv1->mode == mode  in iv_add()
551       && iv1->step == const0_rtx)  in iv_add()
553       iv0->delta = simplify_gen_binary (op, mode, iv0->delta, iv1->base);  in iv_add()
562       *iv0 = *iv1;  in iv_add()
934   struct rtx_iv iv0, iv1;  in iv_analyze_expr()  local
994       && !iv_analyze_expr (insn, omode, op1, &iv1))  in iv_analyze_expr()
1016       if (!iv_add (&iv0, &iv1, code))  in iv_analyze_expr()
2132 canonicalize_iv_subregs (struct rtx_iv *iv0, struct rtx_iv *iv1,  in canonicalize_iv_subregs()  argument
2142   if (iv1->first_special || iv1->mult != const1_rtx || iv1->delta != const0_rtx)  in canonicalize_iv_subregs()
2151 	    || iv1->extend == IV_ZERO_EXTEND)  in canonicalize_iv_subregs()
2159 	    || iv1->extend == IV_SIGN_EXTEND)  in canonicalize_iv_subregs()
2166 	    && iv1->extend != IV_UNKNOWN_EXTEND  in canonicalize_iv_subregs()
2167 	    && iv0->extend != iv1->extend)  in canonicalize_iv_subregs()
2173 	if (iv1->extend != IV_UNKNOWN_EXTEND)  in canonicalize_iv_subregs()
2174 	  signed_p = iv1->extend == IV_SIGN_EXTEND;  in canonicalize_iv_subregs()
2195   if (GET_MODE_BITSIZE (comp_mode) < GET_MODE_BITSIZE (iv1->extend_mode))  in canonicalize_iv_subregs()
2196     comp_mode = iv1->extend_mode;  in canonicalize_iv_subregs()
2209   if (iv1->extend_mode != comp_mode)  in canonicalize_iv_subregs()
2211       if (iv1->mode != iv1->extend_mode  in canonicalize_iv_subregs()
2212 	  || iv1->step != const0_rtx)  in canonicalize_iv_subregs()
2215       iv1->base = simplify_gen_unary (signed_p ? SIGN_EXTEND : ZERO_EXTEND,  in canonicalize_iv_subregs()
2216 				      comp_mode, iv1->base, iv1->mode);  in canonicalize_iv_subregs()
2217       iv1->extend_mode = comp_mode;  in canonicalize_iv_subregs()
2225       && iv0->mode != iv1->mode)  in canonicalize_iv_subregs()
2226     shorten_into_mode (iv0, iv1->mode, cond, signed_p, desc);  in canonicalize_iv_subregs()
2228   if (iv1->mode == iv1->extend_mode  in canonicalize_iv_subregs()
2229       && iv1->step == const0_rtx  in canonicalize_iv_subregs()
2230       && iv0->mode != iv1->mode)  in canonicalize_iv_subregs()
2231     shorten_into_mode (iv1, iv0->mode, swap_condition (cond), signed_p, desc);  in canonicalize_iv_subregs()
2233   if (iv0->mode != iv1->mode)  in canonicalize_iv_subregs()
2310   struct rtx_iv iv0, iv1;  in iv_number_of_iterations()  local
2355   if (!iv_analyze (insn, mode, op1, &iv1))  in iv_number_of_iterations()
2359       || GET_MODE_BITSIZE (iv1.extend_mode) > HOST_BITS_PER_WIDE_INT)  in iv_number_of_iterations()
2370 	std::swap (iv0, iv1);  in iv_number_of_iterations()
2388   if (!canonicalize_iv_subregs (&iv0, &iv1, cond, desc))  in iv_number_of_iterations()
2398   if (!CONST_INT_P (iv0.step) || !CONST_INT_P (iv1.step))  in iv_number_of_iterations()
2404   if (iv0.step != const0_rtx && iv1.step != const0_rtx)  in iv_number_of_iterations()
2409       iv0.step = simplify_gen_binary (MINUS, comp_mode, iv0.step, iv1.step);  in iv_number_of_iterations()
2410       iv1.step = const0_rtx;  in iv_number_of_iterations()
2414   iv1.step = lowpart_subreg (mode, iv1.step, comp_mode);  in iv_number_of_iterations()
2418   if (iv0.step == const0_rtx && iv1.step == const0_rtx)  in iv_number_of_iterations()
2424 	step_val = -INTVAL (iv1.step);  in iv_number_of_iterations()
2466 	    tmp = lowpart_subreg (mode, iv1.base, comp_mode);  in iv_number_of_iterations()
2471 	    iv1.base = simplify_gen_binary (PLUS, comp_mode,  in iv_number_of_iterations()
2472 					    iv1.base, constm1_rtx);  in iv_number_of_iterations()
2503 	  tmp = lowpart_subreg (mode, iv1.base, comp_mode);  in iv_number_of_iterations()
2523 	step = simplify_gen_unary (NEG, comp_mode, iv1.step, comp_mode);  in iv_number_of_iterations()
2527       delta = simplify_gen_binary (MINUS, comp_mode, iv1.base, iv0.base);  in iv_number_of_iterations()
2565 	      tmp = lowpart_subreg (mode, iv1.base, comp_mode);  in iv_number_of_iterations()
2595 	  inc = INTVAL (iv0.step) - INTVAL (iv1.step);  in iv_number_of_iterations()
2596 	  if (CONST_INT_P (iv1.base))  in iv_number_of_iterations()
2597 	    up = INTVAL (iv1.base);  in iv_number_of_iterations()
2615 	      iv1.base = simplify_gen_binary (MINUS, comp_mode, iv1.base, delta);  in iv_number_of_iterations()
2616 	      iv1.base = simplify_gen_binary (PLUS, comp_mode, iv1.base, step);  in iv_number_of_iterations()
2620 	  tmp1 = lowpart_subreg (mode, iv1.base, comp_mode);  in iv_number_of_iterations()
2639       iv1.base = simplify_gen_binary (MINUS, comp_mode, iv1.base, iv0.base);  in iv_number_of_iterations()
2641       iv0.step = simplify_gen_binary (MINUS, comp_mode, iv0.step, iv1.step);  in iv_number_of_iterations()
2642       iv1.step = const0_rtx;  in iv_number_of_iterations()
2646 	  iv1.base = simplify_gen_unary (NEG, comp_mode, iv1.base, comp_mode);  in iv_number_of_iterations()
2662       tmp1 = lowpart_subreg (mode, iv1.base, comp_mode);  in iv_number_of_iterations()
2674       if (iv1.step == const0_rtx)  in iv_number_of_iterations()
2684 	  tmp1 = lowpart_subreg (mode, iv1.base, comp_mode);  in iv_number_of_iterations()
2714 	  tmp = simplify_gen_binary (PLUS, comp_mode, iv1.base, iv0.step);  in iv_number_of_iterations()
2727 	  step = simplify_gen_unary (NEG, mode, iv1.step, mode);  in iv_number_of_iterations()
2729 	  tmp1 = lowpart_subreg (mode, iv1.base, comp_mode);  in iv_number_of_iterations()
2758 	  tmp = simplify_gen_binary (PLUS, comp_mode, iv0.base, iv1.step);  in iv_number_of_iterations()