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| -rw-r--r-- | lib/Target/README.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/Target/README.txt b/lib/Target/README.txt index 422d021655..c04e06fbfe 100644 --- a/lib/Target/README.txt +++ b/lib/Target/README.txt @@ -303,6 +303,16 @@ unsigned int swap_32(unsigned int v) { return v; } +Nor is this (yes, it really is bswap): + +unsigned long reverse(unsigned v) { + unsigned t; + t = v ^ ((v << 16) | (v >> 16)); + t &= ~0xff0000; + v = (v << 24) | (v >> 8); + return v ^ (t >> 8); +} + //===---------------------------------------------------------------------===// These should turn into single 16-bit (unaligned?) loads on little/big endian |