Hi all,
This is a much-delayed respin of the patch in response to Richards
feedback at:
http://gcc.gnu.org/ml/gcc-patches/2014-05/msg00068.html
We now let recursion do its magic and just add the cost of the
arithmetic operation on top.
Tested on arm-none-eabi
Ok for trunk?
2014-11-12 Kyrylo Tkachov <kyrylo.tkac...@arm.com>
* config/arm/arm.c (arm_new_rtx_costs, case PLUS, MINUS):
Add cost of alu.arith in simple SImode case.diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 4bada64..f1cd242 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -9615,6 +9615,8 @@ arm_new_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer_code,
*cost += rtx_cost (XEXP (x, 1), code, 1, speed_p);
return true;
}
+ else if (speed_p)
+ *cost += extra_cost->alu.arith;
return false;
}
@@ -9850,6 +9852,9 @@ arm_new_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer_code,
*cost += rtx_cost (XEXP (x, 0), PLUS, 0, speed_p);
return true;
}
+ else if (speed_p)
+ *cost += extra_cost->alu.arith;
+
return false;
}
