Trying to get the alignment right by using the first non-default one
in the following order of descending priority:
VarDeclaration::alignment [variables only of course]
Type::alignment()
Type::alignsize()
This fixes `align(x) struct S { ... }`.
It may be the initialization of the variable's hidden pointer,
or the initialization of the pointee.
This fixes bugzilla 14944 for us (tested in `runnable/sctor.d`),
see https://github.com/D-Programming-Language/dmd/pull/5013.
For fail_compilation/fail39.d, the frontend furthermore passes a
FuncExp with a TOKdelegate declaration, but a function pointer type
to the glue layer. Just add that to the special case list.
Unfortunately, this is another case where the frontend breaks
the AST in such a way that you need to handle a condition in
exactly the place DMD does, because you cannot reconstruct the
information elsewhere.
Now with *almost* working EH codegen. Does not compile Phobos yet
because we run into the "instruction does not dominate all uses"
issue when an r-value result of toElemDtor is used and we need to
run cleanups in between. Should easily be fixed by promoting those
values to allocas.
Most of the changes outside of ir/irfunction.{h, cpp} are just
because CreateCallOrInvoke moved locations. I took the
opportunity to also make use of the different arg count
overloads where possible.
Never generates any landing pads or invoke instructions right now
for simplicity. The code for emitting them will be added back in
the next step.
The "after..." blocks without any precedessors remain for now, as
we need a clean way to suppress any codegen for that block (but
not new blocks, which might resolve labels) before tackling that
one.
Builds druntime/Phobos on OS X x86_64 (albeit without EH, of course).
Specifying the basic block before which to insert the new one
is not mandatory when calling llvm::BasicBlock::Create. This
was the only use of the tracked "end" block. The concept was
phony anyway because there is no single "end" to a scope with
unwinding and so on.
For prettying up the IR, it is possible to change the order
of basic blocks using move{Before, After}().
This fixes structs with members of structs with real fields. Did not
fail the test suite unless building with assertions before, but
crashed building real-world applications (and obviously led to wrong
struct layouts).
The front-end uses a single bool variable as gate for all destructors
(by replacing each dtor expression by `gate || dtor()`).
This flag is set at the end of the argprefix chain of CommaExp.
So when no exception occurs in argprefix, the dtors aren't invoked in
the inserted finally block.
Right after the finally block we have the call to NewExp's ctor, which
will take care of destructing its parameters.
