On Mon, Feb 24, 2025 at 02:19:14PM +0100, Christophe Leroy wrote: > Well, this problem already exists on clang 18 it seems: > > 00000004 <btext_map>: > 4: 7c 08 02 a6 mflr r0 > 8: 94 21 ff e0 stwu r1,-32(r1) > c: 93 c1 00 18 stw r30,24(r1) > 10: 90 01 00 24 stw r0,36(r1) > 14: 93 a1 00 14 stw r29,20(r1) > 18: 48 00 00 05 bl 1c <btext_map+0x18> > 1c: 38 a0 00 00 li r5,0 > 20: 7f c8 02 a6 mflr r30 > > While GCC generates: > > 00000418 <btext_map>: > 418: 94 21 ff e0 stwu r1,-32(r1) > 41c: 7c 08 02 a6 mflr r0 > 420: 42 9f 00 05 bcl 20,4*cr7+so,424 <btext_map+0xc> > 424: 39 20 00 00 li r9,0 > 428: 93 c1 00 18 stw r30,24(r1) > 42c: 7f c8 02 a6 mflr r30 > > So lets make the kernel tolerate it allthough it should be fixed on clang at > the end. > > I can't find any related issue in the clang issues database > (https://github.com/llvm/llvm-project/issues), should we open one ?
Yes please, especially if you happen to have a simplified reproducer (but no worries if not). I can make sure it gets labeled for the PowerPC backend folks to take a look at. Cheers, Nathan
