- If a declaration is an invalid redeclaration of an existing name,
complain about the invalid redeclaration then avoid adding it to
the AST (we can still parse the definition or initializer, if any).
- If the declaration is invalid but there is no prior declaration
with that name, introduce the invalid declaration into the AST
(for later error recovery).
- If the declaration is an invalid redeclaration of a builtin that
starts with __builtin_, we produce an error and drop the
redeclaration. If it is an invalid redeclaration of a library
builtin (e.g., malloc, printf), warn (don't error!) and drop the
redeclaration.
If a user attempts to define a builtin, produce an error and (if it's
a library builtin like malloc) suggest -ffreestanding.
This addresses <rdar://problem/6097585> and PR2892. However, PR3588 is
still going to cause some problems when builtins are redeclared
without a prototype.
llvm-svn: 64639
would be in one place. Since, now, only DeclNodes.def needs to be modified, move things out-of-line and simplify the DeclContext class.
llvm-svn: 64630
-In DeclNodes.def, only mark as DeclContexts the top classes that directly derive from DeclContext. If the Decl has subclasses,
it should be marked with DECL_CONTEXT_BASE.
-Use DeclNodes.def to automate the DeclContext::classof and DeclContext::CastTo definitions.
llvm-svn: 64629
Enhance instcombine to use the preferred field of
GetOrEnforceKnownAlignment in more cases, so that regular IR operations are
optimized in the same way that the intrinsics currently are.
llvm-svn: 64623
one bit set, because the bit may be shifted off the end. Instead,
just check for a constant 1 being shifted. This is still sufficient
to handle all the cases in test/CodeGen/X86/bt.ll. This fixes PR3583.
llvm-svn: 64622
Before this change, the program:
int var;
int main(void) { return 0; }
when run under 'nm -g' would show 'U var' with the gold plugin and
'B var' with gcc.
llvm-svn: 64616
when I was looking at functions used by python.
Highlights include, better largefile support (64-bit file sizes on 32-bit
systems), fputs string is nocapture, popen/pclose added (popen being noalias
return), modf and frexp and friends. Also added some missing 'break' statements
and combined identical sections.
llvm-svn: 64615
DiagnoseUseOfDeprecatedDecl method. This ensures that they
are treated consistently. This gets us 'unavailable' support
on a few new types of decls, and makes sure we consistently
silence deprecated when the caller is also deprecated.
llvm-svn: 64612
*end* of a macro instantiation, not the start of it. This is
really all about bug-for-bug compatibility with GCC, but not
doing this breaks the FreeBSD kernel.
llvm-svn: 64604
*end* of a macro instantiation, not the start of it. This is
really all about bug-for-bug compatibility with GCC, but not
doing this breaks the FreeBSD kernel.
llvm-svn: 64603
Douglas Gregor