500 iv_add (struct rtx_iv *iv0, struct rtx_iv *iv1, enum rtx_code op)  in iv_add()  argument
509       && GET_MODE_SIZE (iv0->extend_mode) < GET_MODE_SIZE (iv1->extend_mode))  in iv_add()
511       iv0->extend_mode = iv1->extend_mode;  in iv_add()
515   if (iv1->extend == UNKNOWN  in iv_add()
516       && iv1->mode == iv1->extend_mode  in iv_add()
517       && iv1->step == const0_rtx  in iv_add()
518       && GET_MODE_SIZE (iv1->extend_mode) < GET_MODE_SIZE (iv0->extend_mode))  in iv_add()
520       iv1->extend_mode = iv0->extend_mode;  in iv_add()
521       iv1->base = simplify_gen_unary (ZERO_EXTEND, iv1->extend_mode,  in iv_add()
522 				      iv1->base, iv1->mode);  in iv_add()
526   if (mode != iv1->extend_mode)  in iv_add()
529   if (iv0->extend == UNKNOWN && iv1->extend == UNKNOWN)  in iv_add()
531       if (iv0->mode != iv1->mode)  in iv_add()
534       iv0->base = simplify_gen_binary (op, mode, iv0->base, iv1->base);  in iv_add()
535       iv0->step = simplify_gen_binary (op, mode, iv0->step, iv1->step);  in iv_add()
541   if (iv1->extend == UNKNOWN  in iv_add()
542       && iv1->mode == mode  in iv_add()
543       && iv1->step == const0_rtx)  in iv_add()
545       iv0->delta = simplify_gen_binary (op, mode, iv0->delta, iv1->base);  in iv_add()
554       *iv0 = *iv1;  in iv_add()
930   struct rtx_iv iv0, iv1;  in iv_analyze_expr()  local
1004       && !iv_analyze_expr (insn, op1, omode, &iv1))  in iv_analyze_expr()
1022       if (!iv_add (&iv0, &iv1, code))  in iv_analyze_expr()
2083 canonicalize_iv_subregs (struct rtx_iv *iv0, struct rtx_iv *iv1,  in canonicalize_iv_subregs()  argument
2093   if (iv1->first_special || iv1->mult != const1_rtx || iv1->delta != const0_rtx)  in canonicalize_iv_subregs()
2102 	    || iv1->extend == ZERO_EXTEND)  in canonicalize_iv_subregs()
2110 	    || iv1->extend == SIGN_EXTEND)  in canonicalize_iv_subregs()
2117 	    && iv1->extend != UNKNOWN  in canonicalize_iv_subregs()
2118 	    && iv0->extend != iv1->extend)  in canonicalize_iv_subregs()
2124 	if (iv1->extend != UNKNOWN)  in canonicalize_iv_subregs()
2125 	  signed_p = iv1->extend == SIGN_EXTEND;  in canonicalize_iv_subregs()
2146   if (GET_MODE_BITSIZE (comp_mode) < GET_MODE_BITSIZE (iv1->extend_mode))  in canonicalize_iv_subregs()
2147     comp_mode = iv1->extend_mode;  in canonicalize_iv_subregs()
2160   if (iv1->extend_mode != comp_mode)  in canonicalize_iv_subregs()
2162       if (iv1->mode != iv1->extend_mode  in canonicalize_iv_subregs()
2163 	  || iv1->step != const0_rtx)  in canonicalize_iv_subregs()
2166       iv1->base = simplify_gen_unary (signed_p ? SIGN_EXTEND : ZERO_EXTEND,  in canonicalize_iv_subregs()
2167 				      comp_mode, iv1->base, iv1->mode);  in canonicalize_iv_subregs()
2168       iv1->extend_mode = comp_mode;  in canonicalize_iv_subregs()
2176       && iv0->mode != iv1->mode)  in canonicalize_iv_subregs()
2177     shorten_into_mode (iv0, iv1->mode, cond, signed_p, desc);  in canonicalize_iv_subregs()
2179   if (iv1->mode == iv1->extend_mode  in canonicalize_iv_subregs()
2180       && iv1->step == const0_rtx  in canonicalize_iv_subregs()
2181       && iv0->mode != iv1->mode)  in canonicalize_iv_subregs()
2182     shorten_into_mode (iv1, iv0->mode, swap_condition (cond), signed_p, desc);  in canonicalize_iv_subregs()
2184   if (iv0->mode != iv1->mode)  in canonicalize_iv_subregs()
2257   struct rtx_iv iv0, iv1, tmp_iv;  in iv_number_of_iterations()  local
2304   if (!iv_analyze (insn, op1, &iv1))  in iv_number_of_iterations()
2306   if (iv1.extend_mode == VOIDmode)  in iv_number_of_iterations()
2307     iv1.mode = iv1.extend_mode = mode;  in iv_number_of_iterations()
2310       || GET_MODE_BITSIZE (iv1.extend_mode) > HOST_BITS_PER_WIDE_INT)  in iv_number_of_iterations()
2321 	tmp_iv = iv0; iv0 = iv1; iv1 = tmp_iv;  in iv_number_of_iterations()
2339   if (!canonicalize_iv_subregs (&iv0, &iv1, cond, desc))  in iv_number_of_iterations()
2349   if (!CONST_INT_P (iv0.step) || !CONST_INT_P (iv1.step))  in iv_number_of_iterations()
2355   if (iv0.step != const0_rtx && iv1.step != const0_rtx)  in iv_number_of_iterations()
2360       iv0.step = simplify_gen_binary (MINUS, comp_mode, iv0.step, iv1.step);  in iv_number_of_iterations()
2361       iv1.step = const0_rtx;  in iv_number_of_iterations()
2365   iv1.step = lowpart_subreg (mode, iv1.step, comp_mode);  in iv_number_of_iterations()
2369   if (iv0.step == const0_rtx && iv1.step == const0_rtx)  in iv_number_of_iterations()
2375 	step_val = -INTVAL (iv1.step);  in iv_number_of_iterations()
2417 	    tmp = lowpart_subreg (mode, iv1.base, comp_mode);  in iv_number_of_iterations()
2422 	    iv1.base = simplify_gen_binary (PLUS, comp_mode,  in iv_number_of_iterations()
2423 					    iv1.base, constm1_rtx);  in iv_number_of_iterations()
2454 	  tmp = lowpart_subreg (mode, iv1.base, comp_mode);  in iv_number_of_iterations()
2474 	step = simplify_gen_unary (NEG, comp_mode, iv1.step, comp_mode);  in iv_number_of_iterations()
2478       delta = simplify_gen_binary (MINUS, comp_mode, iv1.base, iv0.base);  in iv_number_of_iterations()
2516 	      tmp = lowpart_subreg (mode, iv1.base, comp_mode);  in iv_number_of_iterations()
2546 	  inc = INTVAL (iv0.step) - INTVAL (iv1.step);  in iv_number_of_iterations()
2547 	  if (CONST_INT_P (iv1.base))  in iv_number_of_iterations()
2548 	    up = INTVAL (iv1.base);  in iv_number_of_iterations()
2563 	      iv1.base = simplify_gen_binary (MINUS, comp_mode, iv1.base, delta);  in iv_number_of_iterations()
2564 	      iv1.base = simplify_gen_binary (PLUS, comp_mode, iv1.base, step);  in iv_number_of_iterations()
2568 	  tmp1 = lowpart_subreg (mode, iv1.base, comp_mode);  in iv_number_of_iterations()
2587       iv1.base = simplify_gen_binary (MINUS, comp_mode, iv1.base, iv0.base);  in iv_number_of_iterations()
2589       iv0.step = simplify_gen_binary (MINUS, comp_mode, iv0.step, iv1.step);  in iv_number_of_iterations()
2590       iv1.step = const0_rtx;  in iv_number_of_iterations()
2594 	  iv1.base = simplify_gen_unary (NEG, comp_mode, iv1.base, mode);  in iv_number_of_iterations()
2610       tmp1 = lowpart_subreg (mode, iv1.base, comp_mode);  in iv_number_of_iterations()
2622       if (iv1.step == const0_rtx)  in iv_number_of_iterations()
2632 	  tmp1 = lowpart_subreg (mode, iv1.base, comp_mode);  in iv_number_of_iterations()
2662 	  tmp = simplify_gen_binary (PLUS, comp_mode, iv1.base, iv0.step);  in iv_number_of_iterations()
2675 	  step = simplify_gen_unary (NEG, mode, iv1.step, mode);  in iv_number_of_iterations()
2677 	  tmp1 = lowpart_subreg (mode, iv1.base, comp_mode);  in iv_number_of_iterations()
2706 	  tmp = simplify_gen_binary (PLUS, comp_mode, iv0.base, iv1.step);  in iv_number_of_iterations()