Hi! On Tue, Jun 06, 2023 at 08:35:22PM +0530, Umesh Kalappa wrote: > Hi Adnrew, > Thank you for the quick response and for PPC64 too ,we do have > mismatches in ABI b/w complex operations like > https://godbolt.org/z/bjsYovx4c . > > Any reason why GCC chose to use GPR 's here ?
What did you expect, what happened instead? Why did you expect that, and why then is it an error what did happen? You used -O0. As long as the code works, all is fine. But unoptimised code frequently is hard to read, please use -O2 instead? As Andrew says, why did you use -m32 for GCC but -m64 for LLVM? It is hard to compare those at all! 32-bit PowerPC Linux ABI (based on 32-bit PowerPC ELF ABI from 1995, BE version) vs. 64-bit ELFv2 ABI from 2015 (LE version). Segher
