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Reapply "[RISCV] Support RISCV Atomics ABI attributes (#84597)"
This patch adds support for the atomic_abi attribute, specifid in https://github.com/riscv-non-isa/riscv-elf-psabi-doc/blob/master/riscv-elf.adoc#tag_riscv_atomic_abi-14-uleb128version. This was previously reverted due to ld.bfd segfaulting w/ unknown riscv attributes. Attribute emission is now guarded by a backend flag `--riscv-abi-attributes`, which is off by default. Linker support in LLD for attribute merging is now in a standalone patch. Reviewers: kito-cheng, MaskRay, asb Reviewed By: MaskRay Pull Request: #90266
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Original file line number | Diff line number | Diff line change |
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@@ -24,3 +24,6 @@ | |
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.attribute priv_spec_revision, 0 | ||
# CHECK: attribute 12, 0 | ||
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.attribute atomic_abi, 0 | ||
# CHECK: attribute 14, 0 |
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