We raise the minimal supported binutils version from time to time.
The last bump was commit 1fb12b35e5ff ("kbuild: Raise the minimum
required binutils version to 2.21").
We need to keep these as-instr checks because binutils 2.21 does not
support them.
I hope this will be a good hint which one can be dropped when we
bump the minimal binutils version next time.
As for the Clang/LLVM builds, we require very new LLVM version,
so the LLVM integrated assembler supports all of them.
Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx>
Acked-by: Jason A. Donenfeld <Jason@xxxxxxxxx>
---
Changes in v2:
- Change the patch order and rebase
arch/x86/Kconfig.assembler | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/x86/Kconfig.assembler b/arch/x86/Kconfig.assembler
index 91230bf11a14..a5a1d2766b3a 100644
--- a/arch/x86/Kconfig.assembler
+++ b/arch/x86/Kconfig.assembler
@@ -3,15 +3,25 @@
config AS_AVX2
def_bool $(as-instr,vpbroadcastb %xmm0$(comma)%ymm1)
+ help
+ Supported by binutils >= 2.22 and LLVM integrated assembler
config AS_AVX512
def_bool $(as-instr,vpmovm2b %k1$(comma)%zmm5)
+ help
+ Supported by binutils >= 2.25 and LLVM integrated assembler
config AS_SHA1_NI
def_bool $(as-instr,sha1msg1 %xmm0$(comma)%xmm1)
+ help
+ Supported by binutils >= 2.24 and LLVM integrated assembler
config AS_SHA256_NI
def_bool $(as-instr,sha256msg1 %xmm0$(comma)%xmm1)
+ help
+ Supported by binutils >= 2.24 and LLVM integrated assembler
config AS_ADX
def_bool $(as-instr,adox %eax$(comma)%eax)
+ help
+ Supported by binutils >= 2.23 and LLVM integrated assembler
--
2.17.1
