diff options
Diffstat (limited to 'gcc/emit-rtl.c')
| -rw-r--r-- | gcc/emit-rtl.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c index c49628040f8..2b790636366 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -939,11 +939,13 @@ validate_subreg (machine_mode omode, machine_mode imode, && GET_MODE_INNER (imode) == omode) ; /* ??? x86 sse code makes heavy use of *paradoxical* vector subregs, - i.e. (subreg:V4SF (reg:SF) 0). This surely isn't the cleanest way to - represent this. It's questionable if this ought to be represented at - all -- why can't this all be hidden in post-reload splitters that make - arbitrarily mode changes to the registers themselves. */ - else if (VECTOR_MODE_P (omode) && GET_MODE_INNER (omode) == imode) + i.e. (subreg:V4SF (reg:SF) 0) or (subreg:V4SF (reg:V2SF) 0). This + surely isn't the cleanest way to represent this. It's questionable + if this ought to be represented at all -- why can't this all be hidden + in post-reload splitters that make arbitrarily mode changes to the + registers themselves. */ + else if (VECTOR_MODE_P (omode) + && GET_MODE_INNER (omode) == GET_MODE_INNER (imode)) ; /* Subregs involving floating point modes are not allowed to change size. Therefore (subreg:DI (reg:DF) 0) is fine, but |