Richard Smith 7d89ac98c7 Add a flag to build a single ASTContext shared across all compilations (#7567) ...

Instead of building one Clang `ASTContext` per compilation, the
`--share-cpp-ast` flag causes us to build a single `ASTContext` and
share it across all contexts. One new abstraction is added: `CppDomain`
represents the Carbon-side view of a Clang AST that might be shared
across multiple `SemIR::File`s. This object owns the Clang instance and
the AST.

For now, we have no isolation between the C++ state exposed to different
Carbon compilations, and we have no multiplexing of generated LLVM IR
from C++ into different Carbon compilations, so the mode is not usable
yet. The plan is to keep it behind a flag until it's ready.

Assisted-by: Gemini via Antigravity

2026-07-28 00:19:40 +00:00

..

alias

Add separators between files in LLVM IR dumps (#7463)

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array

Destroy locals at the end of blocks, not only on return (#7448)

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basics

Add separators between files in LLVM IR dumps (#7463)

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builtins

precompile and cache Carbon prelude (#7432)

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choice

Add separators between files in LLVM IR dumps (#7463)

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class

Give thunks weak_odr linkage. (#7525)

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debug

Add separators between files in LLVM IR dumps (#7463)

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for

move Core//range into prelude (#7524)

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function

precompile and cache Carbon prelude (#7432)

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global

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if

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if_expr

Add separators between files in LLVM IR dumps (#7463)

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impl

Give thunks weak_odr linkage. (#7525)

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index

Add separators between files in LLVM IR dumps (#7463)

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interface

Replace :! binding syntax with phase keywords and contextual defaults (#7479)

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interop/cpp

Add a flag to build a single ASTContext shared across all compilations (#7567)

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let

Replace :! binding syntax with phase keywords and contextual defaults (#7479)

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namespace

Add separators between files in LLVM IR dumps (#7463)

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operators

Track and don't replace active .Self (#7443)

2026-07-08 18:04:56 +00:00

packages

Destroy temporaries at the end of expression statements. (#7513)

2026-07-16 15:12:39 +00:00

pointer

Add separators between files in LLVM IR dumps (#7463)

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primitives

Replace :! binding syntax with phase keywords and contextual defaults (#7479)

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return

Replace :! binding syntax with phase keywords and contextual defaults (#7479)

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struct

Add separators between files in LLVM IR dumps (#7463)

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tuple

Add separators between files in LLVM IR dumps (#7463)

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var

Give thunks weak_odr linkage. (#7525)

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while

Add separators between files in LLVM IR dumps (#7463)

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