diff options
| author |  digit@google.com <digit@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> | 2012-08-06 14:53:32 +0000 |
|---|---|---|
| committer | digit@google.com <digit@google.com@2bbb7eff-a529-9590-31e7-b0007b416f81> | 2012-08-06 14:53:32 +0000 |
| commit | 157d94465a47a57e30e5cf49cd57dccd903e27e2 (patch) | |
| tree | b8a4f2bd2c2b03a88865a2c13e58173bfe2f6eba /src/core/SkUtilsArm.h | |
| parent | b932407520663c3b636fb6e6027dc53732a115fb (diff) | |
rm: Introduce SK_ARM_NEON_WRAP handy wrapper macro.
It is used to simplify arm/neon dispatch logic code.
Review URL: https://codereview.appspot.com/6458060
git-svn-id: http://skia.googlecode.com/svn/trunk@4958 2bbb7eff-a529-9590-31e7-b0007b416f81
Diffstat (limited to 'src/core/SkUtilsArm.h')
| -rw-r--r-- | src/core/SkUtilsArm.h | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/src/core/SkUtilsArm.h b/src/core/SkUtilsArm.h index 4562b01923..6a5aab8067 100644 --- a/src/core/SkUtilsArm.h +++ b/src/core/SkUtilsArm.h @@ -47,7 +47,41 @@ static bool sk_cpu_arm_has_neon(void) { return true; } #else // SK_ARM_NEON_IS_DYNAMIC -extern bool sk_cpu_arm_has_neon(void); + +extern bool sk_cpu_arm_has_neon(void) SK_PURE_FUNC; +#endif + +// Use SK_ARM_NEON_WRAP(symbol) to map 'symbol' to a NEON-specific symbol +// when applicable. This will transform 'symbol' differently depending on +// the current NEON configuration, i.e.: +// +// NONE -> 'symbol' +// ALWAYS -> 'symbol_neon' +// DYNAMIC -> 'symbol' or 'symbol_neon' depending on runtime check. +// +// The goal is to simplify user code, for example: +// +// return SK_ARM_NEON_WRAP(do_something)(params); +// +// Replaces the equivalent: +// +// #if SK_ARM_NEON_IS_NONE +// return do_something(params); +// #elif SK_ARM_NEON_IS_ALWAYS +// return do_something_neon(params); +// #elif SK_ARM_NEON_IS_DYNAMIC +// if (sk_cpu_arm_has_neon()) +// return do_something_neon(params); +// else +// return do_something(params); +// #endif +// +#if SK_ARM_NEON_IS_NONE +# define SK_ARM_NEON_WRAP(x) (x) +#elif SK_ARM_NEON_IS_ALWAYS +# define SK_ARM_NEON_WRAP(x) (x ## _neon) +#elif SK_ARM_NEON_IS_DYNAMIC +# define SK_ARM_NEON_WRAP(x) (sk_cpu_arm_has_neon() ? x ## _neon : x) #endif #endif // SkUtilsArm_DEFINED |