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423 Commits

Author SHA1 Message Date
Timm Bäder
160693dbde [clang][Interp][NFC] allocateLocalPrimitive never fails 
It returns the local offset, not an std::optional.
 2024-03-14 14:57:24 +01:00
Timm Bäder
a99b912c9b [clang][Interp] Create dummy pointers for external variables 
This way we can use their address, which is necessary in some
scenarios. This requires us to create different descriptors
for dummy arrays so we can get the diagnostics right.
 2024-03-14 14:35:44 +01:00
Timm Bäder
b97c12936d [clang][Interp] Fix non-primitive ltor casts 
This doesn't happen in C++ since it will instead call the
struct's copy constructor. However, in C, this needs to work.
 2024-03-14 13:55:55 +01:00
Timm Bäder
103469b5f7 [clang][Interp] Implement more easy _Complex unary operators 2024-03-12 08:51:12 +01:00
Timm Bäder
1dd104db59 [clang][Interp] Implement _Complex Not unary operators 
This only happens in C as far as I can tell. The complex varialbe
will have undergone a conversion to bool in C++ before reaching
the unary operator.
 2024-03-12 07:48:56 +01:00
Timm Bäder
d02d8df0cd [clang][Interp] Implement _Complex negation 
Factor complex unary operations into their own function.
 2024-03-12 05:34:57 +01:00
Timm Bäder
9e4f289bd6 [clang][Interp][NFC] Add [[nodiscard]] attribute to emit functions 2024-03-07 19:37:52 +01:00
Timm Bäder
b1f2e19dc2 [clang][Interp][NFC] Use ArrayElem{,Pop} ops more often 
Instead of the longer ArrayElemPtr + Load.
 2024-03-07 17:47:01 +01:00
Timm Bäder
8aed911fe9 [clang][Interp] Implement complex comparisons 2024-03-07 17:04:05 +01:00
Timm Bäder
bc9c6c0c65 [clang][Interp][NFC] Remove ByteCodeGenError 
Unused.
 2024-03-04 17:46:08 +01:00
Timm Bäder
89e41e2965 [clang][Interp] Implement __builtin_complex 2024-03-04 17:15:42 +01:00
Timm Bäder
57f599d644 [clang][Interp] Improve handling of external variables 
Further down in this function, we assert that the variable has
an initializer, which didn't work for external declarations.
 2024-03-02 17:40:16 +01:00
Timm Bäder
68516bfd2f [clang][Interp] Lambda This captures can be non-pointers 
If they are captured by value.
 2024-03-01 18:06:18 +01:00
Timm Bäder
f15d799f16 [clang][Interp] Fix variadic operator calls 
Operator calls pass their instance member explicitly, so remove
it from NumParams when calling a variadic function
 2024-03-01 15:46:00 +01:00
Timm Bäder
990dbf2b7e [clang][Interp] OpaqueValueExprs can have null subexprs 2024-03-01 10:12:50 +01:00
Timm Bäder
ddfc7e2254 [clang][Interp] Emit more dummy pointers in C++ mode 2024-02-29 10:04:42 +01:00
Timm Bäder
49c399c2d1 [clang][Interp] Toplevel destructors may fail 
We used to run them, but not check if they failed. If they do,
the expression is invalid, even if we already have a result.

I do have a suspicion that we need to manually call destroyLocals()
in more places (everywhere basically?), but I'll wait with that
until I have a reproducer at hand.
 2024-02-28 09:48:27 +01:00
Timm Bäder
b70f42a430 [clang][Interp] Handle PseudoObjectExprs 
Evaluate all the semantic expressions.
 2024-02-27 17:11:19 +01:00
Timm Bäder
d612d593ef [clang][Interp] Fix local lvalue compound literals 
Same fix we had for global ones: leave a pointer on the stack.
 2024-02-27 16:57:17 +01:00
Timm Bäder
70e61f5bbb [clang][Interp][NFC] Rename InitPtr{,Pop} to FinishInit{,Pop} 
The old name clashes with the Init opcode.
 2024-02-27 16:14:37 +01:00
Timm Bäder
b5048700fc [clang][Interp] Fix lvalue CompoundLiteralExprs 
We need to leave a pointer on the stack for them, even if their
type is primitive.
 2024-02-26 16:39:43 +01:00
Timm Bäder
af971396a9 [clang][Interp] Handle missing Lambda field initializer 2024-02-26 13:16:35 +01:00
Timm Bäder
a5ccf8522b [clang][Interp] Not all RVO call expressions are initializing 
We do not necessarily prepare storage for the return value when
we are returning a complex value.
 2024-02-26 11:40:58 +01:00
Timm Bäder
15426017bd [clang][Interp] Handle non-complex operands in complex bin ops 
Either LHS or RHS might be non-complex, but not both.
 2024-02-26 09:08:50 +01:00
Timm Bäder
8c5e9cf737 [clang][Interp] Implement nullability argument checking 
Implement constexpr checking for null pointers being passed to
arguments annotated as nonnull.
 2024-02-26 06:19:25 +01:00
Timm Bäder
ad49fe3e89 [clang][Interp] Don't return success for already failed global variables 
We might be visiting them more than once. We used to return true for
second and subsequent cases, just because we had already visited it
before.
 2024-02-23 14:05:19 +01:00
Timm Bäder
13b0321e97 [clang][Interp][NFC] Reject unimplemented cast expressions differently 
Instead of asserting, emit an appropriate diagnostic.
 2024-02-21 17:26:29 +01:00
Timm Bäder
ffcdf47bc4 [clang][Interp] Allow adding an offset to a function pointer 
Pretty sure this isn't doing anything, but it fixes a test and
is generally the right thing to do.
Fixing the behavior will come later.
 2024-02-21 17:18:22 +01:00
Timm Bäder
91ebd010aa [clang][Interp] Remove dereference() 
This function tried to be smart about the dereferenced value,
but it ended up hurting more than it helped. At least in the current
state, where we still try get the correct output.

I might add something similar back later.
 2024-02-21 15:25:55 +01:00
Timm Bäder
9bec1ef5f9 [clang][Interp] assignments aren't always lvalues in C 
If they aren't we need to load from the pointer the Store op
leaves on the stack.
 2024-02-20 12:26:15 +01:00
Timm Baeder
9fa18f6598
[clang][Interp] Handle complex values in visitBool() (#79452) 
In C++, we get a ComplexToBool cast, but we might not in C.
 2024-02-20 10:27:41 +01:00
Timm Bäder
48439bd7a7 [clang][Interp] Handle rewritten binary operators 
Just delegate to the syntactic form.
 2024-02-19 13:05:56 +01:00
Timm Bäder
21431e0f94 [clang][Interp] Remove questionable initializer special case 
I'm not sure where this would be needed, but for the time being,
removing it fixes a problem.
 2024-02-19 12:18:49 +01:00
Timm Bäder
e488fe5a97 [clang][Interp] Fix non-initializing MemberExprs 
We need to create a value for them, do that via visit()
 2024-02-19 11:57:01 +01:00
Timm Bäder
eddf9cf38a [clang][Interp] Fix failure to allocate local variables 
We were incorrectly returning true when the allocateLocal() call
failed.
 2024-02-19 11:52:13 +01:00
Timm Bäder
0b34d7e9e2 [clang][Interp] Fix calling static operators 
They don't have an instance pointer anywhere but get one passed
via their CallExpr.
 2024-02-19 10:34:18 +01:00
Timm Bäder
e98abc3ea0 [clang][Interp] Emit dtors when ignoring CXXConstructExprs 
The comment says we should emit destructors, but we didn't.
 2024-02-19 09:48:50 +01:00
Timm Bäder
fcf3ca9a5e [clang][Interp][NFC] Split emitRecordDestruction 
into a general part and a record part. This will be needed in future
patches.
 2024-02-19 09:23:31 +01:00
Timm Bäder
ba27c3963d [clang][Interp] Classify correct type for compound shifts 
RT must be the type of the RHS, otherwise this later fails when
we set the RHS value to the temporary variable.
 2024-02-18 16:31:40 +01:00
Timm Bäder
d228191c8b [clang][Interp] Create global variables for TemplateParamObjectDecls 2024-02-16 16:07:42 +01:00
Timm Bäder
a52c0c7700 [clang][Interp] Lazily visit constant locals in C++ 
While we _do_ get them registered via visitInitializer(), they
are still local, so gone on the next call to e.g. evaluateAsRValue().

Visit them lazily, similarly like we do in C.
 2024-02-16 12:49:05 +01:00
Timm Bäder
f06e07be9a [clang][Interp][NFC] Check pointer compound assign operators for errors 
This needs to be done but we didn't use to do it.
 2024-02-16 12:30:24 +01:00
Timm Bäder
6a8ab12930 [clang][Interp] Properly emit call ops to invalid functions 
Just like everywhere else, we can't just abort compilation because
a function is invalid. We need to emit the Call op and let later
interpretation handle the failure.

This fixes a long standing FIXME comment.
 2024-02-15 20:17:51 +01:00
Timm Bäder
54826d4980 [clang][Interp] Emit dummy pointers for unknown static locals 
We used to emit dummy pointers for unknown declarations in certain
cases in C, but this is also necessary in C++.

I'm limiting this to static local variables for now.
 2024-02-15 18:12:47 +01:00
Timm Bäder
c81929e9a8 [clang][Interp][NFC] Return std::nullopt explicitly. 2024-02-15 17:49:31 +01:00
Timm Baeder
d68aa303fe
[clang][Interp] Do r-to-l conversion immediately when returning (#80662) 
First, we need to register local constant variables in C, so we get the
same diagnostic behavior as the current interpeter.

Second, when returning an LValue (as a Pointer), which we eventually
convert to an RValue, we need to do the conversion immediately when
saving the Pointer in the EvaluationResult. Otherwise, we will possibly
deallocate the data before doing the conversion (which will look at the
Block*).
 2024-02-15 15:13:12 +01:00
Timm Bäder
d53515afef [clang][Interp] Fix variadic member functions 
For variadic member functions, the way we calculated the instance
pointer and RVO pointer offsts on the stack was incorrect, due
to Func->getArgSize() not returning the full size of all the
passed arguments. When calling variadic functions, we need
to pass the size of the passed (variadic) arguments to the Call*
ops, so they can use that information to properly check the
instance pointer, etc.

This patch adds a bit of code duplication in Interp.h, which I
will get rid of in later cleanup NFC patches.
 2024-02-15 05:59:53 +01:00
Timm Bäder
bb60c066a2 [clang][Interp] Handle Requires- and ConceptSpecializationExprs 
Just emit their satisfaction state, which is what the current
interpreter does as well.
 2024-02-13 15:01:17 +01:00
Timm Bäder
9b718c0d5d [clang][Interp] Handle CXXUuidofExprs 
Allocate storage and initialize it with the given APValue contents.
 2024-02-13 13:41:06 +01:00
Timm Bäder
85e6e71eb0 [clang][Interp] Handle discarded PointerToIntegral casts 
Resolve an old TODO comment.
 2024-02-13 06:57:30 +01:00