------- Comment #3 from pinskia at gcc dot gnu dot org 2007-01-16 22:11 ------- (In reply to comment #1) > Is this specific to x86? On PowerPC (gcc 4.0.1 from Mac OS X), I get:
This is because the PPC ISA says for divide: If an attempt is made to perform either of the divisions -- 0x8000_0000 / -1 or <anything> / 0, then the contents of rD are undefined, as are the contents of the LT, GT, and EQ bits of the CR0 field (if Rc = 1). In this case, if OE = 1 then OV is set. The 32-bit signed remainder of diving the contents of rA by the contents of rB can be computed as follows, exept in the case that hthe constnat of ra = - 2^31 and the constants of rB = -1. divw rD, rA, rB mullw rD, rD, rB subf rD, rD, rA ---------------------- So the ISA in fact even mentions this case :). -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30484
