diff options
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.patch | 79 |
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"); | ||
