Enable the integrated assembler for s390 on -next and mainline #367
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have you tested that LLVM_IAS=1 works today for s390? I thought @hcahca 's kernel patches were pending, and would depend further on
https://reviews.llvm.org/D125982
llvm/llvm-project#55411 (comment)
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I’ll check my build logs from last night but the patches were in https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/log/arch/s390?h=next-20220518 There is a patch on the kernel side to work around that issue. |
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Maybe @hcahca can clarify, will either:
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We will go this route (option 1). As soon as clang-15 is released we might increase the required clang version once again - just to avoid that somebody by accident adds new code which otherwise would be silently miscompiled with clang-14. |
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I'll wait for https://lore.kernel.org/Yot+xzLZETNTxNo+@osiris/ to be merged into mainline then I'll update this pull to turn the integrated assembler on for mainline and -next. |
The s390 folks are requiring LLVM 14 and newer so that the integrated assembler can be used. Remove these builds for -next and mainline, as they won't be able to start. Link: https://git.kernel.org/s390/c/8218827b73c6e41029438a2d3cc573286beee914 Signed-off-by: Nathan Chancellor <nathan@kernel.org>
…inline The s390 folks have updated their asm to work with the integrated assembler. Enable it for s390 builds on -next and mainline. We cannot switch to LLVM=1 because ld.lld and llvm-objcopy do not support s390: ClangBuiltLinux/linux#1524 ClangBuiltLinux/linux#1530 For now, we will just use 'CC=clang LLVM_IAS=1'. Closes: ClangBuiltLinux#363 Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
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Alright, this should be good to go now. |
The s390 folks are requiring LLVM 14 and newer so that the integrated
assembler can be used. Remove these builds for -next and mainline, as
they won't be able to start.
The s390 folks have updated their asm to work with the integrated
assembler. Enable it for s390 builds on -next and mainline.
We cannot switch to LLVM=1 because ld.lld and llvm-objcopy do not
support s390:
ClangBuiltLinux/linux#1524
ClangBuiltLinux/linux#1530
For now, we will just use
CC=clang LLVM_IAS=1.Closes: #363
Link: https://git.kernel.org/s390/c/8218827b73c6e41029438a2d3cc573286beee914