1 Upstream-Status: Inappropriate [Backport]
2 From 5ff95d9c48276f6495b8ebefeb2ce4ac1ab6a1fe Mon Sep 17 00:00:00 2001
3 From: rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4>
4 Date: Wed, 20 Apr 2011 09:48:00 +0000
5 Subject: [PATCH 153/200] 2011-04-20 Richard Guenther <rguenther@suse.de>
8 2011-04-19 Bernd Schmidt <bernds@codesourcery.com>
11 * reload1.c (inc_for_reload): Return void. All callers changed.
12 (emit_input_reload_insns): Don't try to delete previous output
13 reloads to a register, or record spill_reg_store for autoincs.
16 git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@172765 138bc75d-0d04-0410-961f-82ee72b054a4
18 index 3d58e58..5120315 100644
21 @@ -445,7 +445,7 @@ static void emit_reload_insns (struct insn_chain *);
22 static void delete_output_reload (rtx, int, int, rtx);
23 static void delete_address_reloads (rtx, rtx);
24 static void delete_address_reloads_1 (rtx, rtx, rtx);
25 -static rtx inc_for_reload (rtx, rtx, rtx, int);
26 +static void inc_for_reload (rtx, rtx, rtx, int);
28 static void add_auto_inc_notes (rtx, rtx);
30 @@ -7152,22 +7152,12 @@ emit_input_reload_insns (struct insn_chain *chain, struct reload *rl,
32 old = XEXP (rl->in_reg, 0);
34 - if (optimize && REG_P (oldequiv)
35 - && REGNO (oldequiv) < FIRST_PSEUDO_REGISTER
36 - && spill_reg_store[REGNO (oldequiv)]
38 - && (dead_or_set_p (insn,
39 - spill_reg_stored_to[REGNO (oldequiv)])
40 - || rtx_equal_p (spill_reg_stored_to[REGNO (oldequiv)],
42 - delete_output_reload (insn, j, REGNO (oldequiv), reloadreg);
44 /* Prevent normal processing of this reload. */
46 - /* Output a special code sequence for this case. */
47 - new_spill_reg_store[REGNO (reloadreg)]
48 - = inc_for_reload (reloadreg, oldequiv, rl->out,
50 + /* Output a special code sequence for this case, and forget about
51 + spill reg information. */
52 + new_spill_reg_store[REGNO (reloadreg)] = NULL;
53 + inc_for_reload (reloadreg, oldequiv, rl->out, rl->inc);
56 /* If we are reloading a pseudo-register that was set by the previous
57 @@ -8981,11 +8971,9 @@ delete_address_reloads_1 (rtx dead_insn, rtx x, rtx current_insn)
58 IN is either identical to VALUE, or some cheaper place to reload from.
60 INC_AMOUNT is the number to increment or decrement by (always positive).
61 - This cannot be deduced from VALUE.
63 - Return the instruction that stores into RELOADREG. */
64 + This cannot be deduced from VALUE. */
68 inc_for_reload (rtx reloadreg, rtx in, rtx value, int inc_amount)
70 /* REG or MEM to be copied and incremented. */
71 @@ -8997,7 +8985,6 @@ inc_for_reload (rtx reloadreg, rtx in, rtx value, int inc_amount)
76 rtx real_in = in == value ? incloc : in;
78 /* No hard register is equivalent to this register after
79 @@ -9045,9 +9032,8 @@ inc_for_reload (rtx reloadreg, rtx in, rtx value, int inc_amount)
80 be used as an address. */
83 - add_insn = emit_insn (gen_move_insn (reloadreg, incloc));
86 + emit_insn (gen_move_insn (reloadreg, incloc));
90 delete_insns_since (last);
91 @@ -9063,7 +9049,7 @@ inc_for_reload (rtx reloadreg, rtx in, rtx value, int inc_amount)
93 emit_insn (gen_move_insn (reloadreg, real_in));
94 emit_insn (gen_add2_insn (reloadreg, inc));
95 - store = emit_insn (gen_move_insn (incloc, reloadreg));
96 + emit_insn (gen_move_insn (incloc, reloadreg));
100 @@ -9077,14 +9063,12 @@ inc_for_reload (rtx reloadreg, rtx in, rtx value, int inc_amount)
101 the original value. */
103 emit_insn (gen_add2_insn (reloadreg, inc));
104 - store = emit_insn (gen_move_insn (incloc, reloadreg));
105 + emit_insn (gen_move_insn (incloc, reloadreg));
106 if (CONST_INT_P (inc))
107 emit_insn (gen_add2_insn (reloadreg, GEN_INT (-INTVAL (inc))));
109 emit_insn (gen_sub2_insn (reloadreg, inc));