| Message ID | 55433731.6020304@arm.com |
|---|---|
| State | New |
| Headers | show |
On 1 May 2015 at 09:20, Kyrill Tkachov <kyrylo.tkachov@arm.com> wrote: > 2015-05-01 Kyrylo Tkachov <kyrylo.tkachov@arm.com> > > * config/aarch64/aarch64.c (aarch64_rtx_costs, COMPARE case): > Add cost of op0 in the compare-with-fpzero case. ok /Marcus
commit fb206cd3597ca541692ca5d1f1f4bc1d8353ebfa
Author: Kyrylo Tkachov <kyrylo.tkachov@arm.com>
Date: Tue Mar 3 10:44:53 2015 +0000
[AArch64] Remember to cost operand 0 in FP compare-with-0.0 case
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index e19b592..fb9b839 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -5857,6 +5857,7 @@ aarch64_rtx_costs (rtx x, int code, int outer ATTRIBUTE_UNUSED,
if (CONST_DOUBLE_P (op1) && aarch64_float_const_zero_rtx_p (op1))
{
+ *cost += rtx_cost (op0, COMPARE, 0, speed);
/* FCMP supports constant 0.0 for no extra cost. */
return true;
}
Hi all, In rtx costs we should remember to add the cost of operand 0 when handling the compare-with-0.0 case. This simple patch does that. Bootstrapped and tested on aarch64-linux. Ok for stage 1? Thanks, Kyrill 2015-05-01 Kyrylo Tkachov <kyrylo.tkachov@arm.com> * config/aarch64/aarch64.c (aarch64_rtx_costs, COMPARE case): Add cost of op0 in the compare-with-fpzero case.