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alpha: pass -Wa,-mev6 only when using GNU as

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That flag exists to stop gas emulating instructions the assembler thinks
the target lacks.  It is a gas-only option, and LLVM's integrated
assembler does not emulate instructions in the first place, so nothing
is needed there.

Condition it on CONFIG_AS_IS_GNU rather than the compiler, so it is
still passed for clang builds using GNU as (LLVM_IAS=0) and omitted only
for the integrated assembler.

Signed-off-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Magnus Lindholm <linmag7@gmail.com>
Link: https://lore.kernel.org/r/20260805185557.3283233-1-mattst88@gmail.com
Signed-off-by: Magnus Lindholm <linmag7@gmail.com>
This commit is contained in:
Matt Turner
2026-08-05 14:55:57 -04:00
committed by Magnus Lindholm
parent f32977deb1
commit 89679d7908
1 changed files with 7 additions and 1 deletions
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8
arch/alpha/Makefile
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@@ -27,10 +27,16 @@ cpuflags-$(CONFIG_ALPHA_GENERIC) := -mcpu=ev56 -mtune=ev6
cflags-y += $(cpuflags-y)
KBUILD_CFLAGS += $(cflags-y)
# For TSUNAMI, we must have the assembler not emulate our instructions.
# The same is true for IRONGATE, POLARIS, PYXIS.
# BWX is most important, but we don't really want any emulation ever.
KBUILD_CFLAGS += $(cflags-y) -Wa,-mev6
# Only gas emulates instructions the target does not implement, and only gas
# understands -mev6. LLVM's integrated assembler never emulates.
ifdef CONFIG_AS_IS_GNU
KBUILD_CFLAGS += -Wa,-mev6
endif
libs-y += arch/alpha/lib/