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");