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[Bug tree-optimization/40210] gcc needs byte swap builtins
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 20 May 2009 19:01:24 -0000
- Subject: [Bug tree-optimization/40210] gcc needs byte swap builtins
- References: <bug-40210-4564@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #1 from pinskia at gcc dot gnu dot org 2009-05-20 19:01 -------
http://gcc.gnu.org/onlinedocs/gcc-4.3.0/gcc/Other-Builtins.html#Other-Builtins
? Built-in Function: int32_t __builtin_bswap32 (int32_t x)
Returns x with the order of the bytes reversed; for example, 0xaabbccdd becomes
0xddccbbaa. Byte here always means exactly 8 bits.
? Built-in Function: int64_t __builtin_bswap64 (int64_t x)
Similar to __builtin_bswap32, except the argument and return types are 64-bit.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40210