GNU3 demangler: rewrite, bug fixes, and type name corrections#8038

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plafosse wants to merge 27 commits intodevfrom

test_gnu3_demangler_improvements

Commits on Mar 26, 2026

Rewrite GNU3 demangler for performance using DemangledTypeNode

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Implement GNU3 transaction clone demangling (GTt/GTn)

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Implement TLS init/wrapper functions and covariant return thunks

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Demangle _block_invoke symbols (Clang/Apple block invocations)

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Use underscores in block invocation prefix

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Fix demangling of generic lambdas with auto parameters (T_/T0_ refs)

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Fix substitution table and local-name template scoping issues

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Fix I...E argument pack and Dp pack expansion for concrete types

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Add Intel Vector Function ABI demangling support

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Implement vendor-extended type (U) and fix typeinfo rendering

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Fix sr expression qualifier substitution table tracking

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Fix substitution seq-id parsing for multi-character indices

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Fix ABI tag (B <source-name>) handling in nested names and function names

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Fix L_Z embedded mangled name in primary expressions

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Fix GNU3 demangler substitution table and decltype handling

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Fix LZ function-pointer template args, cl/dt expression formatting, fp_ in decltype
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GNU3 demangler: fix sr substitutions, CI2 constructors, M prefix, Z guard disambiguation
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GNU3 demangler: fix multi-level sr scope resolution without N prefix

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GNU3 demangler: fix substitution table for unscoped template names and sr intermediate qualifiers

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GNU3 demangler: fix sr N-prefix source-name qualifiers and digit-branch substitution pushes

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GNU3 demangler: GR reference temporaries, u vendor types, $tlv$init, fL fix, decltype

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GNU3 demangler: ABI tags, operator<=>, multi-digit T-params, cv cast fix

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GNU3 demangler: fix two bugs, remove dead code, guard debug helpers

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GNU3 demangler: remove dead code and unused function

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GNU3 demangler: fix __int128 literal type and .eh extension spacing

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GNU3 demangler: fix type names to match Itanium ABI spec

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Restore return type confidence which was lost from the initial refactor
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GNU3 demangler: rewrite, bug fixes, and type name corrections#8038

GNU3 demangler: rewrite, bug fixes, and type name corrections#8038
plafosse wants to merge 27 commits intodevfrom
test_gnu3_demangler_improvements

Commits on Mar 26, 2026

Rewrite GNU3 demangler for performance using DemangledTypeNode

Implement GNU3 transaction clone demangling (GTt/GTn)

Implement TLS init/wrapper functions and covariant return thunks

Demangle _block_invoke symbols (Clang/Apple block invocations)

Use underscores in block invocation prefix

Fix demangling of generic lambdas with auto parameters (T_/T0_ refs)

Fix substitution table and local-name template scoping issues

Fix I...E argument pack and Dp pack expansion for concrete types

Add Intel Vector Function ABI demangling support

Implement vendor-extended type (U) and fix typeinfo rendering

Fix sr expression qualifier substitution table tracking

Fix substitution seq-id parsing for multi-character indices

Fix ABI tag (B <source-name>) handling in nested names and function names

Fix L_Z embedded mangled name in primary expressions

Fix GNU3 demangler substitution table and decltype handling

Fix LZ function-pointer template args, cl/dt expression formatting, fp_ in decltype

GNU3 demangler: fix sr substitutions, CI2 constructors, M prefix, Z guard disambiguation

GNU3 demangler: fix multi-level sr scope resolution without N prefix

GNU3 demangler: fix substitution table for unscoped template names and sr intermediate qualifiers

GNU3 demangler: fix sr N-prefix source-name qualifiers and digit-branch substitution pushes

GNU3 demangler: GR reference temporaries, u vendor types, $tlv$init, fL fix, decltype

GNU3 demangler: ABI tags, operator<=>, multi-digit T-params, cv cast fix

GNU3 demangler: fix two bugs, remove dead code, guard debug helpers

GNU3 demangler: remove dead code and unused function

GNU3 demangler: fix __int128 literal type and .eh extension spacing

GNU3 demangler: fix type names to match Itanium ABI spec

Restore return type confidence which was lost from the initial refactor