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| H A D | Makefile | 6b24442d Fri Feb 09 07:19:47 CST 2018 Will Deacon <will.deacon@arm.com> arm64: lse: Pass -fomit-frame-pointer to out-of-line ll/sc atomics
In cases where x30 is used as a temporary in the out-of-line ll/sc atomics
(e.g. atomic_fetch_add), the compiler tends to put out a full stackframe,
which included pointing the x29 at the new frame.
Since these things aren't traceable anyway, we can pass -fomit-frame-pointer
to reduce the work when spilling. Since this is incompatible with -pg, we
also remove that from the CFLAGS for this file.
Signed-off-by: Will Deacon <will.deacon@arm.com>
6b24442d Fri Feb 09 07:19:47 CST 2018 Will Deacon <will.deacon@arm.com> arm64: lse: Pass -fomit-frame-pointer to out-of-line ll/sc atomics
In cases where x30 is used as a temporary in the out-of-line ll/sc atomics
(e.g. atomic_fetch_add), the compiler tends to put out a full stackframe,
which included pointing the x29 at the new frame.
Since these things aren't traceable anyway, we can pass -fomit-frame-pointer
to reduce the work when spilling. Since this is incompatible with -pg, we
also remove that from the CFLAGS for this file.
Signed-off-by: Will Deacon <will.deacon@arm.com>
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