1 From 5ff95d9c48276f6495b8ebefeb2ce4ac1ab6a1fe Mon Sep 17 00:00:00 2001
2 From: rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
3 Date: Wed, 20 Apr 2011 09:48:00 +0000
4 Subject: [PATCH 153/200] 2011-04-20 Richard Guenther <rguenther@suse.de>
7 2011-04-19 Bernd Schmidt <bernds@codesourcery.com>
10 * reload1.c (inc_for_reload): Return void. All callers changed.
11 (emit_input_reload_insns): Don't try to delete previous output
12 reloads to a register, or record spill_reg_store for autoincs.
15 git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@172765 138bc75d-0d04-0410-961f-82ee72b054a4
17 index 3d58e58..5120315 100644
20 @@ -445,7 +445,7 @@ static void emit_reload_insns (struct insn_chain *);
21 static void delete_output_reload (rtx, int, int, rtx);
22 static void delete_address_reloads (rtx, rtx);
23 static void delete_address_reloads_1 (rtx, rtx, rtx);
24 -static rtx inc_for_reload (rtx, rtx, rtx, int);
25 +static void inc_for_reload (rtx, rtx, rtx, int);
27 static void add_auto_inc_notes (rtx, rtx);
29 @@ -7152,22 +7152,12 @@ emit_input_reload_insns (struct insn_chain *chain, struct reload *rl,
31 old = XEXP (rl->in_reg, 0);
33 - if (optimize && REG_P (oldequiv)
34 - && REGNO (oldequiv) < FIRST_PSEUDO_REGISTER
35 - && spill_reg_store[REGNO (oldequiv)]
37 - && (dead_or_set_p (insn,
38 - spill_reg_stored_to[REGNO (oldequiv)])
39 - || rtx_equal_p (spill_reg_stored_to[REGNO (oldequiv)],
41 - delete_output_reload (insn, j, REGNO (oldequiv), reloadreg);
43 /* Prevent normal processing of this reload. */
45 - /* Output a special code sequence for this case. */
46 - new_spill_reg_store[REGNO (reloadreg)]
47 - = inc_for_reload (reloadreg, oldequiv, rl->out,
49 + /* Output a special code sequence for this case, and forget about
50 + spill reg information. */
51 + new_spill_reg_store[REGNO (reloadreg)] = NULL;
52 + inc_for_reload (reloadreg, oldequiv, rl->out, rl->inc);
55 /* If we are reloading a pseudo-register that was set by the previous
56 @@ -8981,11 +8971,9 @@ delete_address_reloads_1 (rtx dead_insn, rtx x, rtx current_insn)
57 IN is either identical to VALUE, or some cheaper place to reload from.
59 INC_AMOUNT is the number to increment or decrement by (always positive).
60 - This cannot be deduced from VALUE.
62 - Return the instruction that stores into RELOADREG. */
63 + This cannot be deduced from VALUE. */
67 inc_for_reload (rtx reloadreg, rtx in, rtx value, int inc_amount)
69 /* REG or MEM to be copied and incremented. */
70 @@ -8997,7 +8985,6 @@ inc_for_reload (rtx reloadreg, rtx in, rtx value, int inc_amount)
75 rtx real_in = in == value ? incloc : in;
77 /* No hard register is equivalent to this register after
78 @@ -9045,9 +9032,8 @@ inc_for_reload (rtx reloadreg, rtx in, rtx value, int inc_amount)
79 be used as an address. */
82 - add_insn = emit_insn (gen_move_insn (reloadreg, incloc));
85 + emit_insn (gen_move_insn (reloadreg, incloc));
89 delete_insns_since (last);
90 @@ -9063,7 +9049,7 @@ inc_for_reload (rtx reloadreg, rtx in, rtx value, int inc_amount)
92 emit_insn (gen_move_insn (reloadreg, real_in));
93 emit_insn (gen_add2_insn (reloadreg, inc));
94 - store = emit_insn (gen_move_insn (incloc, reloadreg));
95 + emit_insn (gen_move_insn (incloc, reloadreg));
99 @@ -9077,14 +9063,12 @@ inc_for_reload (rtx reloadreg, rtx in, rtx value, int inc_amount)
100 the original value. */
102 emit_insn (gen_add2_insn (reloadreg, inc));
103 - store = emit_insn (gen_move_insn (incloc, reloadreg));
104 + emit_insn (gen_move_insn (incloc, reloadreg));
105 if (CONST_INT_P (inc))
106 emit_insn (gen_add2_insn (reloadreg, GEN_INT (-INTVAL (inc))));
108 emit_insn (gen_sub2_insn (reloadreg, inc));