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authorRichard Purdie <richard@openedhand.com>2008-03-18 10:41:39 +0000
committerRichard Purdie <richard@openedhand.com>2008-03-18 10:41:39 +0000
commit1255ee64ee58fb5f0acd0bdbf4f0a54afd5ceeaf (patch)
tree293d34ede70b906b04967ac077e32a8fee4e855b /meta/packages/gcc/gcc-3.4.3/gcc34-arm-ldm-peephole.patch
parent402c7dcb2790bd51de9436befe8c273e538be441 (diff)
downloadpoky-1255ee64ee58fb5f0acd0bdbf4f0a54afd5ceeaf.tar.gz
gcc: Merge in the major cleanup I made in OE.dev
git-svn-id: https://svn.o-hand.com/repos/poky/trunk@4038 311d38ba-8fff-0310-9ca6-ca027cbcb966
Diffstat (limited to 'meta/packages/gcc/gcc-3.4.3/gcc34-arm-ldm-peephole.patch')
-rw-r--r--meta/packages/gcc/gcc-3.4.3/gcc34-arm-ldm-peephole.patch79
1 files changed, 0 insertions, 79 deletions
diff --git a/meta/packages/gcc/gcc-3.4.3/gcc34-arm-ldm-peephole.patch b/meta/packages/gcc/gcc-3.4.3/gcc34-arm-ldm-peephole.patch
deleted file mode 100644
index fb317e1537..0000000000
--- a/meta/packages/gcc/gcc-3.4.3/gcc34-arm-ldm-peephole.patch
+++ /dev/null
@@ -1,79 +0,0 @@
1--- gcc-3.4.0/gcc/config/arm/arm.md.arm-ldm-peephole 2004-01-13 08:24:37.000000000 -0500
2+++ gcc-3.4.0/gcc/config/arm/arm.md 2004-04-24 18:18:04.000000000 -0400
3@@ -8810,13 +8810,16 @@
4 (set_attr "length" "4,8,8")]
5 )
6
7+; Try to convert LDR+LDR+arith into [add+]LDM+arith
8+; On XScale, LDM is always slower than two LDRs, so only do this if
9+; optimising for size.
10 (define_insn "*arith_adjacentmem"
11 [(set (match_operand:SI 0 "s_register_operand" "=r")
12 (match_operator:SI 1 "shiftable_operator"
13 [(match_operand:SI 2 "memory_operand" "m")
14 (match_operand:SI 3 "memory_operand" "m")]))
15 (clobber (match_scratch:SI 4 "=r"))]
16- "TARGET_ARM && adjacent_mem_locations (operands[2], operands[3])"
17+ "TARGET_ARM && (!arm_tune_xscale || optimize_size) && adjacent_mem_locations (operands[2], operands[3])"
18 "*
19 {
20 rtx ldm[3];
21@@ -8851,6 +8854,8 @@
22 }
23 if (val1 && val2)
24 {
25+ /* This would be a loss on a Harvard core, but adjacent_mem_locations()
26+ will prevent it from happening. */
27 rtx ops[3];
28 ldm[0] = ops[0] = operands[4];
29 ops[1] = XEXP (XEXP (operands[2], 0), 0);
30--- gcc-3.4.0/gcc/config/arm/arm.c.arm-ldm-peephole 2004-04-24 18:16:25.000000000 -0400
31+++ gcc-3.4.0/gcc/config/arm/arm.c 2004-04-24 18:18:04.000000000 -0400
32@@ -4593,8 +4593,11 @@
33 arith_adjacentmem pattern to output an overlong sequence. */
34 if (!const_ok_for_op (PLUS, val0) || !const_ok_for_op (PLUS, val1))
35 return 0;
36-
37- return (reg0 == reg1) && ((val1 - val0) == 4 || (val0 - val1) == 4);
38+
39+ /* For Harvard cores, only accept pairs where one offset is zero.
40+ See comment in load_multiple_sequence. */
41+ return (reg0 == reg1) && ((val1 - val0) == 4 || (val0 - val1) == 4)
42+ && (!arm_ld_sched || val0 == 0 || val1 == 0);
43 }
44 return 0;
45 }
46@@ -4838,6 +4841,11 @@
47 *load_offset = unsorted_offsets[order[0]];
48 }
49
50+ /* For XScale a two-word LDM is a performance loss, so only do this if
51+ size is more important. See comments in arm_gen_load_multiple. */
52+ if (nops == 2 && arm_tune_xscale && !optimize_size)
53+ return 0;
54+
55 if (unsorted_offsets[order[0]] == 0)
56 return 1; /* ldmia */
57
58@@ -5064,6 +5072,11 @@
59 *load_offset = unsorted_offsets[order[0]];
60 }
61
62+ /* For XScale a two-word LDM is a performance loss, so only do this if
63+ size is more important. See comments in arm_gen_load_multiple. */
64+ if (nops == 2 && arm_tune_xscale && !optimize_size)
65+ return 0;
66+
67 if (unsorted_offsets[order[0]] == 0)
68 return 1; /* stmia */
69
70--- gcc-3.4.0/gcc/genpeep.c.arm-ldm-peephole 2003-07-05 01:27:22.000000000 -0400
71+++ gcc-3.4.0/gcc/genpeep.c 2004-04-24 18:18:04.000000000 -0400
72@@ -381,6 +381,7 @@
73 printf ("#include \"recog.h\"\n");
74 printf ("#include \"except.h\"\n\n");
75 printf ("#include \"function.h\"\n\n");
76+ printf ("#include \"flags.h\"\n\n");
77
78 printf ("#ifdef HAVE_peephole\n");
79 printf ("extern rtx peep_operand[];\n\n");