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5 Commits
Author SHA1 Message Date
Nicholas Bishop f9e1806c4a Improve diagnostics for EvaluateAsConstantExpr (#6956) 
Initialize the `Diag` field `EvalResult` to get notes from clang when
`EvaluateAsConstantExpr` fails, then emit them using clang's diagnostic
infrastructure.

Also set valid source locations in a couple places, otherwise clang's
diagnostics code crashes.
 2026-03-24 19:40:09 +00:00
Nicholas Bishop 943cd41924 Support constexpr pointers (#6907) 
This moves the LValue path code from macros.cpp to constant.cpp, so that
it can be called from `MapAPValueToConstant`. TODO messages are updated
accordingly to avoid referring to macros. Added a constexpr pointer test
to `constexpr.carbon` to show the result of this change.
 2026-03-16 19:19:20 +00:00
Nicholas Bishop c1fd771242 Support calling constexpr functions at compile time (#6878) 
Example:

```carbon
import Cpp inline '''
constexpr int f(int a, int b) { return a + b; }
''';

let a: array(i32, Cpp.f(1, 2)) = (1, 2, 3);
```
 2026-03-12 01:45:31 +00:00
Nicholas Bishop 96f163f114 Support floats in MapAPValueToConstant (#6800) 
This allows `constexpr float` to be properly imported as a constant.
 2026-02-26 19:48:19 +00:00
Nicholas Bishop f210f4ab04 Add initial support for importing C++ constexprs as Carbon constants (#6770) 
This allows a C++ constexpr to be used as an argument to a non-type
template parameter.

https://github.com/carbon-language/carbon-lang/issues/6717
 2026-02-24 20:59:24 +00:00