------- Comment #2 from falk at debian dot org 2006-08-10 21:11 -------
Confirmed. This is a smaller test case:
int vformat(char *buffer) {
return buffer[32767];
}
This needs -mcpu=ev45. It is triggered by the synthetization
of the 8-bit load by 64-bit loads. ldb v0, x(a0) is done as
lda a0,x+1(a0)
ldq_u v0,-1(a0)
extqh v0,a0,v0
sra v0,56,v0
and if x=32767, this fails.
(Incidentally, maybe we should do
ldq_u t1,x(a0)
lda a0,x+1(a0)
extqh t1,a0,t1
sra t1,56,v0
and save one cycle at the cost of one extra register.)
--
falk at debian dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rth at gcc dot gnu dot org
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28623
