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| author | Richard Stallman <rms@gnu.org> | 1993-06-29 22:05:11 +0000 |
|---|---|---|
| committer | Richard Stallman <rms@gnu.org> | 1993-06-29 22:05:11 +0000 |
| commit | c070dcf73313ae48f3686b3beaa267802d757ab3 (patch) | |
| tree | f80ac1d91af5d306853f2d30f9fcad622f11bce0 /gcc | |
| parent | 72cdb410fd69dac68bc8c6ba190dff6534ba7e8b (diff) | |
| download | gcc-c070dcf73313ae48f3686b3beaa267802d757ab3.zip gcc-c070dcf73313ae48f3686b3beaa267802d757ab3.tar.gz gcc-c070dcf73313ae48f3686b3beaa267802d757ab3.tar.bz2 | |
comment change.
From-SVN: r4797
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/combine.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index d6c1ef8..fb63387 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -3997,7 +3997,7 @@ subst (x, from, to, in_dest, unique_copy) means that we only care about the low bits of the result. However, on most machines (those with neither BYTE_LOADS_ZERO_EXTEND - nor BYTES_LOADS_SIGN_EXTEND defined), we cannot perform a + nor BYTE_LOADS_SIGN_EXTEND defined), we cannot perform a narrower operation that requested since the high-order bits will be undefined. On machine where BYTE_LOADS_*_EXTEND is defined, however, this transformation is safe as long as M1 and M2 have |