Segher Boessenkool <segher@kernel.crashing.org> wrote: > This simply isn't true. The compiler *can* combine asm stuff: > > > typedef struct { int counter; } atomic_t; > > static inline __attribute__((pure)) int atomic_read(const atomic_t *v) > { > int x; > asm("ld %0,@%1" : "=r"(x) : "r"(&v->counter), "m"(v->counter)); > return x; > } That's not precisely combining asm stuff. The compiler is ditching a whole function because you've told it it can cache the result. David - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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- Re: [PATCH 11/23] make atomic_read() and atomic_set() behavior consistent on m32r
- From: Segher Boessenkool <segher@kernel.crashing.org>
- [PATCH 0/23] make atomic_read() and atomic_set() behavior consistent across all architectures
- From: Chris Snook <csnook@redhat.com>
- [PATCH 11/23] make atomic_read() and atomic_set() behavior consistent on m32r
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- Re: [PATCH 11/23] make atomic_read() and atomic_set() behavior consistent on m32r
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- Re: [PATCH 11/23] make atomic_read() and atomic_set() behavior consistent on m32r
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- Re: [PATCH 11/23] make atomic_read() and atomic_set() behavior consistent on m32r
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- Re: [PATCH 11/23] make atomic_read() and atomic_set() behavior consistent on m32r
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- Re: [PATCH 11/23] make atomic_read() and atomic_set() behavior consistent on m32r
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