Hi all,
The Cortex-A55 and Cortex-A75 processors support the fp16 extension.
We already specify them as such in the arm port.
This patch makes aarch64 consistent on this front.
Bootstrapped and tested on aarch64-none-linux-gnu.
Manually checked that compiling with aarch64-none-linux-gnu-gcc
-mcpu=cortex-a55 -dM -E - < /dev/null
shows __ARM_FEATURE_FP16_VECTOR_ARITHMETIC and
__ARM_FEATURE_FP16_SCALAR_ARITHMETIC being specified
as expected whereas they were not before this patch.
Ok for trunk?
Thanks,
Kyrill
2017-12-11 Kyrylo Tkachov <kyrylo.tkac...@arm.com>
* config/aarch64/aarch64-cores.def (cortex-a55, cortex-a75,
cortex-a75.cortex-a55): Specify AARCH64_FL_F16 in the arch features.
commit e9148d4af145bcd094dddf1b23fdaa3b4c1a95b5
Author: Kyrylo Tkachov <kyrylo.tkac...@arm.com>
Date: Wed Dec 6 16:07:05 2017 +0000
[AArch64] Specify fp16 support for Cortex-A55 and Cortex-A75
diff --git a/gcc/config/aarch64/aarch64-cores.def b/gcc/config/aarch64/aarch64-cores.def
index cdf047c..fa08cdf 100644
--- a/gcc/config/aarch64/aarch64-cores.def
+++ b/gcc/config/aarch64/aarch64-cores.def
@@ -83,8 +83,8 @@ AARCH64_CORE("thunderx2t99", thunderx2t99, thunderx2t99, 8_1A, AARCH64_FL_FOR
/* ARMv8.2-A Architecture Processors. */
/* ARM ('A') cores. */
-AARCH64_CORE("cortex-a55", cortexa55, cortexa53, 8_2A, AARCH64_FL_FOR_ARCH8_2 | AARCH64_FL_RCPC | AARCH64_FL_DOTPROD, cortexa53, 0x41, 0xd05, -1)
-AARCH64_CORE("cortex-a75", cortexa75, cortexa57, 8_2A, AARCH64_FL_FOR_ARCH8_2 | AARCH64_FL_RCPC | AARCH64_FL_DOTPROD, cortexa73, 0x41, 0xd0a, -1)
+AARCH64_CORE("cortex-a55", cortexa55, cortexa53, 8_2A, AARCH64_FL_FOR_ARCH8_2 | AARCH64_FL_F16 | AARCH64_FL_RCPC | AARCH64_FL_DOTPROD, cortexa53, 0x41, 0xd05, -1)
+AARCH64_CORE("cortex-a75", cortexa75, cortexa57, 8_2A, AARCH64_FL_FOR_ARCH8_2 | AARCH64_FL_F16 | AARCH64_FL_RCPC | AARCH64_FL_DOTPROD, cortexa73, 0x41, 0xd0a, -1)
/* ARMv8.3-A Architecture Processors. */
@@ -100,6 +100,6 @@ AARCH64_CORE("cortex-a73.cortex-a53", cortexa73cortexa53, cortexa53, 8A, AARCH
/* ARM DynamIQ big.LITTLE configurations. */
-AARCH64_CORE("cortex-a75.cortex-a55", cortexa75cortexa55, cortexa53, 8_2A, AARCH64_FL_FOR_ARCH8_2 | AARCH64_FL_RCPC | AARCH64_FL_DOTPROD, cortexa73, 0x41, AARCH64_BIG_LITTLE (0xd0a, 0xd05), -1)
+AARCH64_CORE("cortex-a75.cortex-a55", cortexa75cortexa55, cortexa53, 8_2A, AARCH64_FL_FOR_ARCH8_2 | AARCH64_FL_F16 | AARCH64_FL_RCPC | AARCH64_FL_DOTPROD, cortexa73, 0x41, AARCH64_BIG_LITTLE (0xd0a, 0xd05), -1)
#undef AARCH64_CORE