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Enable use of the __builtin_bswap32() only with GCC 4.3 and higher.

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FossilOrigin-Name: 030f60a7ba171650ce8c0ac32dc166eab80aca32
This commit is contained in:
mistachkin
2015-07-03 17:54:49 +00:00
parent ec7c1de354
commit f156c9b684
3 changed files with 10 additions and 10 deletions
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4
src/util.c
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@@ -1082,7 +1082,7 @@ u32 sqlite3Get4byte(const u8 *p){
u32 x;
memcpy(&x,p,4);
return x;
#elif SQLITE_BYTEORDER==1234 && defined(__GNUC__)
#elif SQLITE_BYTEORDER==1234 && defined(__GNUC__) && GCC_VERSION>=4003000
u32 x;
memcpy(&x,p,4);
return __builtin_bswap32(x);
@@ -1098,7 +1098,7 @@ u32 sqlite3Get4byte(const u8 *p){
void sqlite3Put4byte(unsigned char *p, u32 v){
#if SQLITE_BYTEORDER==4321
memcpy(p,&v,4);
#elif SQLITE_BYTEORDER==1234 && defined(__GNUC__)
#elif SQLITE_BYTEORDER==1234 && defined(__GNUC__) && GCC_VERSION>=4003000
u32 x = __builtin_bswap32(v);
memcpy(p,&x,4);
#elif SQLITE_BYTEORDER==1234 && defined(_MSC_VER) && _MSC_VER>=1300