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Make the SSE3.1 VideoCommon code available in GCC builds.

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The GCC model for extended instructions like these is that you compile
with -msse3 etc. These affect code generation for whole compilation units,
so the idea is that you have a separate .c file for each instruction set
class and then indirect to the desired one at runtime.

Without e.g. -msse4.1, the GCC built-ins used by <foointrin.h> are not
available. However, in our specific case of compiling with -msse2 and
wanting to use SSE3.1 code, enough built-ins are available that we only
need to provide a little hack for pshufb.

Upgrading this to also use SSE4.1 instructions doesn't appear feasible
without a lot of undesirable duplication of GCC built-in functions and
headers, so we'd probably have to move to the GCC model of separate
source files for that.


git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6014 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Soren Jorvang
2010-07-31 14:40:01 +00:00
parent 840bd3613f
commit 824b509d2e
4 changed files with 29 additions and 12 deletions
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17
Source/Core/Common/Src/CommonFuncs.h
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@ -27,6 +27,19 @@
template <bool> struct CompileTimeAssert;
template<> struct CompileTimeAssert<true> {};
#if defined __GNUC__ && !defined __SSSE3__
#include <emmintrin.h>
static __inline __m128i __attribute__((__always_inline__))
_mm_shuffle_epi8(__m128i a, __m128i mask)
{
__m128i result;
__asm__("pshufb %1, %0"
: "=x" (result)
: "xm" (mask), "0" (a));
return result;
}
#endif
#ifndef _WIN32
#include <errno.h>
@ -44,6 +57,7 @@ size_t strnlen(const char *s, size_t n);
#define Crash() {asm ("int $3");}
#endif
#define ARRAYSIZE(A) (sizeof(A)/sizeof((A)[0]))
inline u32 _rotl(u32 x, int shift) {
shift &= 31;
if (!shift) return x;
@ -65,7 +79,7 @@ inline u64 _rotr64(u64 x, unsigned int shift){
unsigned int n = shift % 64;
return (x >> n) | (x << (64 - n));
}
#define SLEEP(x) usleep(x*1000)
#else // WIN32
// Function Cross-Compatibility
#define strcasecmp _stricmp
@ -80,7 +94,6 @@ char* strndup (char const *s, size_t n);
#define ftell _ftelli64
#define atoll _atoi64
#define stat64 _stat64
#define SLEEP(x) Sleep(x)
#if _M_IX86
#define Crash() {__asm int 3}