[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [PATCH v4 02/16] cputlb: Disable __always_inline__ without optimizat
From: |
Alex Bennée |
Subject: |
Re: [PATCH v4 02/16] cputlb: Disable __always_inline__ without optimization |
Date: |
Tue, 24 Sep 2019 14:56:16 +0100 |
User-agent: |
mu4e 1.3.4; emacs 27.0.50 |
Richard Henderson <address@hidden> writes:
> This forced inlining can result in missing symbols,
> which makes a debugging build harder to follow.
>
> Reviewed-by: Philippe Mathieu-Daudé <address@hidden>
> Reviewed-by: David Hildenbrand <address@hidden>
> Reported-by: Peter Maydell <address@hidden>
> Signed-off-by: Richard Henderson <address@hidden>
Reviewed-by: Alex Bennée <address@hidden>
> ---
> include/qemu/compiler.h | 11 +++++++++++
> accel/tcg/cputlb.c | 4 ++--
> 2 files changed, 13 insertions(+), 2 deletions(-)
>
> diff --git a/include/qemu/compiler.h b/include/qemu/compiler.h
> index 09fc44cca4..20780e722d 100644
> --- a/include/qemu/compiler.h
> +++ b/include/qemu/compiler.h
> @@ -170,6 +170,17 @@
> # define QEMU_NONSTRING
> #endif
>
> +/*
> + * Forced inlining may be desired to encourage constant propagation
> + * of function parameters. However, it can also make debugging harder,
> + * so disable it for a non-optimizing build.
> + */
> +#if defined(__OPTIMIZE__)
> +#define QEMU_ALWAYS_INLINE __attribute__((always_inline))
> +#else
> +#define QEMU_ALWAYS_INLINE
> +#endif
> +
> /* Implement C11 _Generic via GCC builtins. Example:
> *
> * QEMU_GENERIC(x, (float, sinf), (long double, sinl), sin) (x)
> diff --git a/accel/tcg/cputlb.c b/accel/tcg/cputlb.c
> index abae79650c..2222b87764 100644
> --- a/accel/tcg/cputlb.c
> +++ b/accel/tcg/cputlb.c
> @@ -1281,7 +1281,7 @@ static void *atomic_mmu_lookup(CPUArchState *env,
> target_ulong addr,
> typedef uint64_t FullLoadHelper(CPUArchState *env, target_ulong addr,
> TCGMemOpIdx oi, uintptr_t retaddr);
>
> -static inline uint64_t __attribute__((always_inline))
> +static inline uint64_t QEMU_ALWAYS_INLINE
> load_helper(CPUArchState *env, target_ulong addr, TCGMemOpIdx oi,
> uintptr_t retaddr, MemOp op, bool code_read,
> FullLoadHelper *full_load)
> @@ -1530,7 +1530,7 @@ tcg_target_ulong helper_be_ldsl_mmu(CPUArchState *env,
> target_ulong addr,
> * Store Helpers
> */
>
> -static inline void __attribute__((always_inline))
> +static inline void QEMU_ALWAYS_INLINE
> store_helper(CPUArchState *env, target_ulong addr, uint64_t val,
> TCGMemOpIdx oi, uintptr_t retaddr, MemOp op)
> {
--
Alex Bennée