Hi,
As commented at https://gcc.gnu.org/ml/gcc-patches/2014-09/msg00684.html,
this is a simple patch enabling neon memset inlining on
cortex-a53/cortex-a57 in AArch32 mode.
Test on
arm-none-linux-gnueabihf/--with-cpu=cortex-a57/--with-fpu=crypto-neon-fp-arm
v8/--with-float=hard. I will further collect benchmark data, see if there
is regression.
Is it ok if benchmark results are good?
2014-11-13 Bin Cheng <bin.ch...@arm.com>
* config/arm/arm.c (arm_cortex_a53_tune, arm_cortex_a57_tune):
Prefer
neon for stringops on cortex-a53/a57 in AArch32 mode.
Index: gcc/config/arm/arm.c
===================================================================
--- gcc/config/arm/arm.c (revision 215108)
+++ gcc/config/arm/arm.c (working copy)
@@ -1893,7 +1893,7 @@ const struct tune_params arm_cortex_a53_tune =
&arm_default_vec_cost, /* Vectorizer costs. */
false, /* Prefer Neon for 64-bits
bitops. */
false, false, /* Prefer 32-bit encodings. */
- false, /* Prefer Neon for stringops.
*/
+ true, /* Prefer Neon for
stringops. */
8 /* Maximum insns to inline
memset. */
};
@@ -1912,7 +1912,7 @@ const struct tune_params arm_cortex_a57_tune =
&arm_default_vec_cost, /* Vectorizer costs. */
false, /* Prefer Neon for 64-bits
bitops. */
true, true, /* Prefer 32-bit encodings. */
- false, /* Prefer Neon for stringops.
*/
+ true, /* Prefer Neon for
stringops. */
8 /* Maximum insns to inline
memset. */
};
