In message <[EMAIL PROTECTED]>you write: > This is a multi-part message in MIME format. > --------------9CB81803EC0384A5CE331D38 > Content-Type: text/plain; charset=us-ascii > Content-Transfer-Encoding: 7bit > > This bug is present in gcc-2.95.1 and in the gcc snapshot extracted the > 21 th October from CVS with the correct gcc-2.95.2 branch tag. > > Attached with this mail you will find : > 1) The C code that triggers the bug (standalone so that you can > regenerate it) > 2) The side by side asm code generated by egcc 1.1.2 (-mcpu=604) and > gcc-2.95.2 (-mcpu=750) (and probably gcc-2.95.1 as the bug also happens > with this gcc version) > 3) The explanation of the bug in the form of commented asm, > > Basically the bug is due to the new way used to generate C "for" > instruction. Now for the PPC targets the PPC' "CTR" register is used in > cunjunction of the "bdnz". The problem is that the CTR register is > automatically decremented by the bdnz instruction but the CTR value is > not always used as the input value for the index variable of the loop. > See comments in the asm code. I've got a fix for this, but I'm not sure whether or not I'm comfortable with including it in gcc-2.95.2 this late in the process. We'll see.
jeff
