This patch add command line support for ARMv8.3-A through new architecture:
-march=armv8.3-a
ARMv8.3-A implies all default features of ARMv8.2-A and meanwhile it includes
the new pointer authentication extension.
gcc/
2016-11-08 Jiong Wang<[email protected]>
* config/aarch64/aarch64-arches.def: New entry for "armv8.3-a".
* config/aarch64/aarch64.h (AARCH64_FL_PAUTH, AARCH64_FL_V8_3,
AARCH64_FL_FOR_ARCH8_3, AARCH64_ISA_PAUTH, AARCH64_ISA_V8_3,
TARGET_PAUTH, TARGET_ARMV8_3): New.
* doc/invoke.texi (AArch64 Options): Document "armv8.3-a".
diff --git a/gcc/config/aarch64/aarch64-arches.def b/gcc/config/aarch64/aarch64-arches.def
index 7dcf140411f6eb95504d9b92df9dadce50529a28..0a33f799e66b4ec6e016845eb333f24aaf63383e 100644
--- a/gcc/config/aarch64/aarch64-arches.def
+++ b/gcc/config/aarch64/aarch64-arches.def
@@ -33,4 +33,5 @@
AARCH64_ARCH("armv8-a", generic, 8A, 8, AARCH64_FL_FOR_ARCH8)
AARCH64_ARCH("armv8.1-a", generic, 8_1A, 8, AARCH64_FL_FOR_ARCH8_1)
AARCH64_ARCH("armv8.2-a", generic, 8_2A, 8, AARCH64_FL_FOR_ARCH8_2)
+AARCH64_ARCH("armv8.3-a", generic, 8_3A, 8, AARCH64_FL_FOR_ARCH8_3)
diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h
index 19caf9f2979e30671720823829464300b5349273..70efbe9b5f97bd38d61ad66e38608f7ac5bdfb38 100644
--- a/gcc/config/aarch64/aarch64.h
+++ b/gcc/config/aarch64/aarch64.h
@@ -138,6 +138,10 @@ extern unsigned aarch64_architecture_version;
/* ARMv8.2-A architecture extensions. */
#define AARCH64_FL_V8_2 (1 << 8) /* Has ARMv8.2-A features. */
#define AARCH64_FL_F16 (1 << 9) /* Has ARMv8.2-A FP16 extensions. */
+/* ARMv8.3-A architecture extensions. */
+#define AARCH64_FL_PAUTH (1 << 10) /* Has Pointer Authentication
+ Extensions. */
+#define AARCH64_FL_V8_3 (1 << 11) /* Has ARMv8.3-A features. */
/* Has FP and SIMD. */
#define AARCH64_FL_FPSIMD (AARCH64_FL_FP | AARCH64_FL_SIMD)
@@ -151,6 +155,8 @@ extern unsigned aarch64_architecture_version;
(AARCH64_FL_FOR_ARCH8 | AARCH64_FL_LSE | AARCH64_FL_CRC | AARCH64_FL_V8_1)
#define AARCH64_FL_FOR_ARCH8_2 \
(AARCH64_FL_FOR_ARCH8_1 | AARCH64_FL_V8_2)
+#define AARCH64_FL_FOR_ARCH8_3 \
+ (AARCH64_FL_FOR_ARCH8_2 | AARCH64_FL_V8_3 | AARCH64_FL_PAUTH)
/* Macros to test ISA flags. */
@@ -162,6 +168,8 @@ extern unsigned aarch64_architecture_version;
#define AARCH64_ISA_RDMA (aarch64_isa_flags & AARCH64_FL_V8_1)
#define AARCH64_ISA_V8_2 (aarch64_isa_flags & AARCH64_FL_V8_2)
#define AARCH64_ISA_F16 (aarch64_isa_flags & AARCH64_FL_F16)
+#define AARCH64_ISA_PAUTH (aarch64_isa_flags & AARCH64_FL_PAUTH)
+#define AARCH64_ISA_V8_3 (aarch64_isa_flags & AARCH64_FL_V8_3)
/* Crypto is an optional extension to AdvSIMD. */
#define TARGET_CRYPTO (TARGET_SIMD && AARCH64_ISA_CRYPTO)
@@ -176,6 +184,12 @@ extern unsigned aarch64_architecture_version;
#define TARGET_FP_F16INST (TARGET_FLOAT && AARCH64_ISA_F16)
#define TARGET_SIMD_F16INST (TARGET_SIMD && AARCH64_ISA_F16)
+/* Pointer Authentication extension. */
+#define TARGET_PAUTH (AARCH64_ISA_PAUTH)
+
+/* ARMv8.3-A extension. */
+#define TARGET_ARMV8_3 (AARCH64_ISA_V8_3)
+
/* Make sure this is always defined so we don't have to check for ifdefs
but rather use normal ifs. */
#ifndef TARGET_FIX_ERR_A53_835769_DEFAULT
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 87da1f1c12b718fa63c9b89fdd8f85fbc6b54cb0..18ab6d9f20eca7fa29317e10678f1e46f64039bd 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -13257,7 +13257,10 @@ more feature modifiers. This option has the form
@option{-march=@var{arch}@r{@{}+@r{[}no@r{]}@var{feature}@r{@}*}}.
The permissible values for @var{arch} are @samp{armv8-a},
-@samp{armv8.1-a}, @samp{armv8.2-a} or @var{native}.
+@samp{armv8.1-a}, @samp{armv8.2-a}, @samp{armv8.3-a} or @var{native}.
+
+The value @samp{armv8.3-a} implies @samp{armv8.2-a} and enables compiler
+support for the ARMv8.3-A architecture extensions.
The value @samp{armv8.2-a} implies @samp{armv8.1-a} and enables compiler
support for the ARMv8.2-A architecture extensions.
