The ARMv8.1 architecture extension adds two Adv.SIMD instructions,
sqrdmlah and sqrdmlsh. This patch adds the feature macro
__ARM_FEATURE_QRDMX to indicate the presence of these instructions,
generating it when the feature is available, as it is when
-march=armv8.1-a is selected.
Tested the series for aarch64-none-linux-gnu with native bootstrap and
make check on an ARMv8 architecture. Also tested aarch64-none-elf with
cross-compiled check-gcc on an ARMv8.1 emulator.
Ok for trunk?
Matthew
gcc/
2015-10-23 Matthew Wahab <matthew.wa...@arm.com>
* config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins): Add
ARM_FEATURE_QRDMX.
>From 3af8c483a2def95abec264ca8591547d6c0e0b3e Mon Sep 17 00:00:00 2001
From: Matthew Wahab <matthew.wa...@arm.com>
Date: Thu, 27 Aug 2015 13:31:49 +0100
Subject: [PATCH 4/7] Add ACLE QRDMX feature macro.
Change-Id: I91af172637603ea89fc93a8e715973d7d304a92f
---
gcc/config/aarch64/aarch64-c.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/gcc/config/aarch64/aarch64-c.c b/gcc/config/aarch64/aarch64-c.c
index 303025f..ad95c78 100644
--- a/gcc/config/aarch64/aarch64-c.c
+++ b/gcc/config/aarch64/aarch64-c.c
@@ -126,6 +126,7 @@ aarch64_update_cpp_builtins (cpp_reader *pfile)
aarch64_def_or_undef (TARGET_ILP32, "__ILP32__", pfile);
aarch64_def_or_undef (TARGET_CRYPTO, "__ARM_FEATURE_CRYPTO", pfile);
+ aarch64_def_or_undef (TARGET_SIMD_RDMA, "__ARM_FEATURE_QRDMX", pfile);
}
/* Implement TARGET_CPU_CPP_BUILTINS. */
--
2.1.4
