On Wed, Nov 11, 2015 at 11:27:37AM +1100, Benjamin Herrenschmidt wrote: > There's no point inlining this, if you hit the exception case you exit > anyway,
That doesn't quite seem relevant - IIUC this is affecting inlining in
the code generation path, rather than the code execution path.
> and not inlining saves about 100K of code size (and cache
> footprint).
That sounds like a win, though.
>
> Signed-off-by: Benjamin Herrenschmidt <b...@kernel.crashing.org>
> ---
> target-ppc/translate.c | 9 ++++++---
> 1 file changed, 6 insertions(+), 3 deletions(-)
>
> diff --git a/target-ppc/translate.c b/target-ppc/translate.c
> index a5ab2eb..ac62942 100644
> --- a/target-ppc/translate.c
> +++ b/target-ppc/translate.c
> @@ -279,7 +279,8 @@ void gen_update_current_nip(void *opaque)
> tcg_gen_movi_tl(cpu_nip, ctx->nip);
> }
>
> -static inline void gen_exception_err(DisasContext *ctx, uint32_t excp,
> uint32_t error)
> +static void __attribute__((noinline))
> +gen_exception_err(DisasContext *ctx, uint32_t excp, uint32_t error)
I thought we generally avoided bare gcc attributes in qemu, but I
don't see a helper macro for it and I do see it used in a few other
places, so I guess its ok.
> {
> TCGv_i32 t0, t1;
> if (ctx->exception == POWERPC_EXCP_NONE) {
> @@ -293,7 +294,8 @@ static inline void gen_exception_err(DisasContext *ctx,
> uint32_t excp, uint32_t
> ctx->exception = (excp);
> }
>
> -static inline void gen_exception(DisasContext *ctx, uint32_t excp)
> +static void __attribute__((noinline))
> +gen_exception(DisasContext *ctx, uint32_t excp)
> {
> TCGv_i32 t0;
> if (ctx->exception == POWERPC_EXCP_NONE) {
> @@ -305,7 +307,8 @@ static inline void gen_exception(DisasContext *ctx,
> uint32_t excp)
> ctx->exception = (excp);
> }
>
> -static inline void gen_debug_exception(DisasContext *ctx)
> +static void __attribute__((noinline))
> +gen_debug_exception(DisasContext *ctx)
> {
> TCGv_i32 t0;
>
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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