mirror of
https://github.com/crosstool-ng/crosstool-ng.git
synced 2024-12-22 14:12:26 +00:00
69 lines
2.6 KiB
Diff
69 lines
2.6 KiB
Diff
diff -durN gcc-3.4.6.orig/gcc/config/arm/arm.c gcc-3.4.6/gcc/config/arm/arm.c
|
|
--- gcc-3.4.6.orig/gcc/config/arm/arm.c 2005-10-01 15:31:38.000000000 +0200
|
|
+++ gcc-3.4.6/gcc/config/arm/arm.c 2007-08-15 22:54:59.000000000 +0200
|
|
@@ -4857,6 +4857,11 @@
|
|
*load_offset = unsorted_offsets[order[0]];
|
|
}
|
|
|
|
+ /* For XScale a two-word LDM is a performance loss, so only do this if
|
|
+ size is more important. See comments in arm_gen_load_multiple. */
|
|
+ if (nops == 2 && arm_tune_xscale && !optimize_size)
|
|
+ return 0;
|
|
+
|
|
if (unsorted_offsets[order[0]] == 0)
|
|
return 1; /* ldmia */
|
|
|
|
@@ -5083,6 +5088,11 @@
|
|
*load_offset = unsorted_offsets[order[0]];
|
|
}
|
|
|
|
+ /* For XScale a two-word LDM is a performance loss, so only do this if
|
|
+ size is more important. See comments in arm_gen_load_multiple. */
|
|
+ if (nops == 2 && arm_tune_xscale && !optimize_size)
|
|
+ return 0;
|
|
+
|
|
if (unsorted_offsets[order[0]] == 0)
|
|
return 1; /* stmia */
|
|
|
|
diff -durN gcc-3.4.6.orig/gcc/config/arm/arm.md gcc-3.4.6/gcc/config/arm/arm.md
|
|
--- gcc-3.4.6.orig/gcc/config/arm/arm.md 2005-10-01 15:31:38.000000000 +0200
|
|
+++ gcc-3.4.6/gcc/config/arm/arm.md 2007-08-15 22:54:59.000000000 +0200
|
|
@@ -8811,13 +8811,16 @@
|
|
(set_attr "length" "4,8,8")]
|
|
)
|
|
|
|
+; Try to convert LDR+LDR+arith into [add+]LDM+arith
|
|
+; On XScale, LDM is always slower than two LDRs, so only do this if
|
|
+; optimising for size.
|
|
(define_insn "*arith_adjacentmem"
|
|
[(set (match_operand:SI 0 "s_register_operand" "=r")
|
|
(match_operator:SI 1 "shiftable_operator"
|
|
[(match_operand:SI 2 "memory_operand" "m")
|
|
(match_operand:SI 3 "memory_operand" "m")]))
|
|
(clobber (match_scratch:SI 4 "=r"))]
|
|
- "TARGET_ARM && adjacent_mem_locations (operands[2], operands[3])"
|
|
+ "TARGET_ARM && (!arm_tune_xscale || optimize_size) && adjacent_mem_locations (operands[2], operands[3])"
|
|
"*
|
|
{
|
|
rtx ldm[3];
|
|
@@ -8852,6 +8855,8 @@
|
|
}
|
|
if (val1 && val2)
|
|
{
|
|
+ /* This would be a loss on a Harvard core, but adjacent_mem_locations()
|
|
+ will prevent it from happening. */
|
|
rtx ops[3];
|
|
ldm[0] = ops[0] = operands[4];
|
|
ops[1] = XEXP (XEXP (operands[2], 0), 0);
|
|
diff -durN gcc-3.4.6.orig/gcc/genpeep.c gcc-3.4.6/gcc/genpeep.c
|
|
--- gcc-3.4.6.orig/gcc/genpeep.c 2003-07-05 07:27:22.000000000 +0200
|
|
+++ gcc-3.4.6/gcc/genpeep.c 2007-08-15 22:54:59.000000000 +0200
|
|
@@ -381,6 +381,7 @@
|
|
printf ("#include \"recog.h\"\n");
|
|
printf ("#include \"except.h\"\n\n");
|
|
printf ("#include \"function.h\"\n\n");
|
|
+ printf ("#include \"flags.h\"\n\n");
|
|
|
|
printf ("#ifdef HAVE_peephole\n");
|
|
printf ("extern rtx peep_operand[];\n\n");
|