aarch64: Add +sve2p1 to -march=armv9.4-a flags

The ArmARM says:
"In an Armv9.4 implementation, if FEAT_SVE2 is implemented, FEAT_SVE2p1
is implemented."

We should enable +sve2p1 as part of -march=armv9.4-a, which this patch does.
This makes gcc consistent with gas.
Bootstrapped and tested on aarch64-none-linux-gnu.

Signed-off-by: Kyrylo Tkachov <ktkachov@nvidia.com>
gcc/

	* config/aarch64/aarch64-arches.def (...): Add SVE2p1.
	* doc/invoke.texi (AArch64 Options): Document +sve2p1 in
	-march=armv9.4-a.

diff --git a/gcc/config/aarch64/aarch64-arches.def b/gcc/config/aarch64/aarch64-arches.def
index 34a792d69510f967e738d233c1e35aed47349971..bf56fe9b4449275bdf86d421bcb879b8c43bee76 100644 (file)
--- a/gcc/config/aarch64/aarch64-arches.def
+++ b/gcc/config/aarch64/aarch64-arches.def
@@ -45,7 +45,7 @@ AARCH64_ARCH("armv9-a",       generic_armv9_a,   V9A  ,     9,  (V8_5A, SVE2))
 AARCH64_ARCH("armv9.1-a",     generic_armv9_a,   V9_1A,     9,  (V8_6A, V9A))
 AARCH64_ARCH("armv9.2-a",     generic_armv9_a,   V9_2A,     9,  (V8_7A, V9_1A))
 AARCH64_ARCH("armv9.3-a",     generic_armv9_a,   V9_3A,     9,  (V8_8A, V9_2A))
-AARCH64_ARCH("armv9.4-a",     generic_armv9_a,   V9_4A,     9,  (V8_9A, V9_3A))
+AARCH64_ARCH("armv9.4-a",     generic_armv9_a,   V9_4A,     9,  (V8_9A, V9_3A, SVE2p1))
 AARCH64_ARCH("armv9.5-a",     generic_armv9_a,   V9_5A,     9,  (V9_4A, CPA, FAMINMAX, LUT))
 
 #undef AARCH64_ARCH

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 7bef9bbf1c00c014538379c732eacc50918b942f..1819bcdcdfb9b640ed5ca0629414e6df31ffc0d2 100644 (file)
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -21708,7 +21708,7 @@ and the features that they enable by default:
 @item @samp{armv9.1-a} @tab Armv9.1-A @tab @samp{armv9-a}, @samp{+bf16}, @samp{+i8mm}
 @item @samp{armv9.2-a} @tab Armv9.2-A @tab @samp{armv9.1-a}, @samp{+wfxt}, @samp{+xs}
 @item @samp{armv9.3-a} @tab Armv9.3-A @tab @samp{armv9.2-a}, @samp{+mops}
-@item @samp{armv9.4-a} @tab Armv9.4-A @tab @samp{armv9.3-a}
+@item @samp{armv9.4-a} @tab Armv9.4-A @tab @samp{armv9.3-a}, @samp{+sve2p1}
 @item @samp{armv9.5-a} @tab Armv9.4-A @tab @samp{armv9.4-a}, @samp{cpa}, @samp{+faminmax}, @samp{+lut}
 @item @samp{armv8-r} @tab Armv8-R @tab @samp{armv8-r}
 @end multitable