Jakub Jelinek wrote: > What's the reason why ppc-linux and s390-linux targetted GCC > requires 64-bit HWI these days? > If it is a native compiler, this means using long long in a huge part > of the compiler and therefore slower compile times and bigger memory > consumption. > ppc-linux configured compiler (nor s390-linux) isn't multilibbed and > ppc-linux only supports -m32 (s390-linux one apparently supports > both -m31 and -m64 on the GCC side, but without multilibs it isn't very > helpful).
There are two reasons why we require 64-bit HWI on s390: we want to support -m64 (multilibs can be easily added), and 64-bit HWI simplifies constant handling significantly. There are multiple places in the s390 backend that rely on the size of HWI being > 32-bit, and would likely cause overflow problems otherwise ... Bye, Ulrich -- Dr. Ulrich Weigand Linux on zSeries Development [EMAIL PROTECTED]
