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James Morse authored
Some uses of ALTERNATIVE() may depend on a feature that is disabled at compile time by a Kconfig option. In this case the unused alternative instructions waste space, and if the original instruction is a nop, it wastes time and space. This patch adds an optional 'config' option to ALTERNATIVE() and alternative_insn that allows the compiler to remove both the original and alternative instructions if the config option is not defined. Suggested-by:
Catalin Marinas <catalin.marinas@arm.com> Acked-by:
Catalin Marinas <catalin.marinas@arm.com> Signed-off-by:
James Morse <james.morse@arm.com> Signed-off-by:
Will Deacon <will.deacon@arm.com>
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