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Re: [Qemu-devel] [PATCH 1/3] cputlb: Disable __always_inline__ without o
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] [PATCH 1/3] cputlb: Disable __always_inline__ without optimization |
Date: |
Wed, 11 Sep 2019 09:34:26 +0100 |
On Wed, 11 Sep 2019 at 02:43, Richard Henderson
<address@hidden> wrote:
>
> This forced inlining can result in missing symbols,
> which makes a debugging build harder to follow.
>
> Reported-by: Peter Maydell <address@hidden>
> Signed-off-by: Richard Henderson <address@hidden>
> ---
> accel/tcg/cputlb.c | 16 ++++++++++++++--
> 1 file changed, 14 insertions(+), 2 deletions(-)
>
> diff --git a/accel/tcg/cputlb.c b/accel/tcg/cputlb.c
> index abae79650c..909f01ebcc 100644
> --- a/accel/tcg/cputlb.c
> +++ b/accel/tcg/cputlb.c
> @@ -1269,6 +1269,18 @@ static void *atomic_mmu_lookup(CPUArchState *env,
> target_ulong addr,
> cpu_loop_exit_atomic(env_cpu(env), retaddr);
> }
>
> +/*
> + * In order for the expected constant folding to happen,
> + * we require that some functions be inlined.
> + * However, this inlining can make debugging harder for a
> + * non-optimizing build.
> + */
> +#ifdef __OPTIMIZE__
> +#define ALWAYS_INLINE __attribute__((always_inline))
> +#else
> +#define ALWAYS_INLINE
> +#endif
> +
Maybe this should go in compiler.h ?
> /*
> * Load Helpers
> *
> @@ -1281,7 +1293,7 @@ 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 ALWAYS_INLINE
> load_helper(CPUArchState *env, target_ulong addr, TCGMemOpIdx oi,
> uintptr_t retaddr, MemOp op, bool code_read,
> FullLoadHelper *full_load)
> @@ -1530,7 +1542,7 @@ tcg_target_ulong helper_be_ldsl_mmu(CPUArchState *env,
> target_ulong addr,
> * Store Helpers
> */
>
> -static inline void __attribute__((always_inline))
> +static inline void ALWAYS_INLINE
> store_helper(CPUArchState *env, target_ulong addr, uint64_t val,
> TCGMemOpIdx oi, uintptr_t retaddr, MemOp op)
> {
> --
> 2.17.1
Either way
Reviewed-by: Peter Maydell <address@hidden>
thanks
-- PMM