[clang] [DRAFT][RISCV] Emit arch string macro to facilitate ASM programming (PR #85063)
nemanjai wrote: Ah, I missed the fact that there is an option `-riscv-add-build-attributes` that the clang driver passes when invoking `cc1as`. Perhaps that option should default to `true`? Thanks and sorry for the noise. https://github.com/llvm/llvm-project/pull/85063 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
[clang] [DRAFT][RISCV] Emit arch string macro to facilitate ASM programming (PR #85063)
https://github.com/nemanjai closed https://github.com/llvm/llvm-project/pull/85063 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
[clang] [DRAFT][RISCV] Emit arch string macro to facilitate ASM programming (PR #85063)
jrtc27 wrote: Attributes are added automatically, unless you override it with your own .attribute arch. https://github.com/llvm/llvm-project/pull/85063 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
[clang] [DRAFT][RISCV] Emit arch string macro to facilitate ASM programming (PR #85063)
wangpc-pp wrote:
I think we will add attributes automatically?
```shell
~/workspace# cat a.S
.globl foo
.p2align1
.type foo,@function
foo:
ret
~/workspace# clang -march=rv64gcv -c a.S
~/workspace# llvm-readobj -A a.o
File: a.o
Format: elf64-littleriscv
Arch: riscv64
AddressSize: 64bit
LoadName:
BuildAttributes {
FormatVersion: 0x41
Section 1 {
SectionLength: 157
Vendor: riscv
Tag: Tag_File (0x1)
Size: 147
FileAttributes {
Attribute {
Tag: 5
TagName: arch
Value:
rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_v1p0_zicsr2p0_zifencei2p0_zve32f1p0_zve32x1p0_zve64d1p0_zve64f1p0_zve64x1p0_zvl128b1p0_zvl32b1p0_zvl64b1p0
}
}
}
}
```
https://github.com/llvm/llvm-project/pull/85063
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[clang] [DRAFT][RISCV] Emit arch string macro to facilitate ASM programming (PR #85063)
nemanjai wrote: This is a suggestion born out of a request from a user to have a way to emit the ISA attributes into objects produced from pre-processed asm files. Perhaps there is already a method to do this that I'm not aware of, but if not, I think this is a convenient and lightweight way to do so. https://github.com/llvm/llvm-project/pull/85063 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
[clang] [DRAFT][RISCV] Emit arch string macro to facilitate ASM programming (PR #85063)
https://github.com/nemanjai edited https://github.com/llvm/llvm-project/pull/85063 ___ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
