Douglas Gregor [Sun, 29 Jan 2012 20:52:14 +0000 (20:52 +0000)]
Introduce a module map for (some of) the compiler-supplied
headers. The remaining headers require more sophisticated
requirements; they'll be handled separately. Part of
<rdar://problem/10710060>.
Douglas Gregor [Sun, 29 Jan 2012 17:08:11 +0000 (17:08 +0000)]
Rework HeaderSearch's interface for getting a module from a name and
for getting the name of the module file, unifying the code for
searching for a module with a given name (into lookupModule()) and
separating out the mapping to a module file (into
getModuleFileName()). No functionality change.
John McCall [Sun, 29 Jan 2012 02:35:02 +0000 (02:35 +0000)]
Get a little bit smarter about killing off the ReturnValue alloca
in the presence of straight-line cleanups. This is a simple but
important case, particularly for ARC.
John McCall [Sun, 29 Jan 2012 01:20:30 +0000 (01:20 +0000)]
Complain about attempts to use 'protected' visibility on targets
like Darwin that don't support it. We should also complain about
invalid -fvisibility=protected, but that information doesn't seem
to exist at the most appropriate time, so I've left a FIXME behind.
objc-arc: Perform null check on receiver before sending methods which
consume one or more of their arguments. If not done, this will cause a leak
as method will not consume the argument when receiver is null.
// rdar://10444474
Douglas Gregor [Sat, 28 Jan 2012 00:53:29 +0000 (00:53 +0000)]
Allow the external AST source to provide a layout without specifying
the alignment (because it's not encoded in DWARF). In this case, make
an educated guess at the alignment.
Douglas Gregor [Fri, 27 Jan 2012 19:52:33 +0000 (19:52 +0000)]
Introduce module attributes into the module map grammar, along with a
single attribute ("system") that allows us to mark a module as being a
"system" module. Each of the headers that makes up a system module is
considered to be a system header, so that we (for example) suppress
warnings there.
If a module is being inferred for a framework, and that framework
directory is within a system frameworks directory, infer it as a
system framework.
Douglas Gregor [Fri, 27 Jan 2012 01:47:08 +0000 (01:47 +0000)]
Reimplement (de-)serialization of Objective-C categories to eliminate
the direct serialization of the linked-list structure. Instead, use a
scheme similar to how we handle redeclarations, with redeclaration
lists on the side. This addresses several issues:
- In cases involving mixing and matching of many categories across
many modules, the linked-list structure would not be consistent
across different modules, and categories would get lost.
- If a module is loaded after the class definition and its other
categories have already been loaded, we wouldn't see any categories
in the newly-loaded module.
Richard Smith [Fri, 27 Jan 2012 01:14:48 +0000 (01:14 +0000)]
constexpr: Implement the [dcl.constexpr]p5 check for whether a constexpr
function definition can produce a constant expression. This also provides the
last few checks for [dcl.constexpr]p3 and [dcl.constexpr]p4.
Eli Friedman [Thu, 26 Jan 2012 23:34:06 +0000 (23:34 +0000)]
Turn off implicit truncation warning for compound assignment to bitfields; it might be reasonable in some cases, but it clearly doesn't make sense in some cases, like the included testcase.
Eli Friedman [Thu, 26 Jan 2012 23:11:39 +0000 (23:11 +0000)]
Make the bitfield implicit truncation warning slightly more aggressive, and make the printed warning a bit more accurate. The new behavior matches gcc's -Wconversion. <rdar://problem/10238797>.
Remove the ToolTriple logic in NetBSD, which was completely broken by
the recent refactoring. All interesting NetBSD release have a GNU as
version on i386 that supports --32, so don't bother with the conditional
setting of it.
Bob Wilson [Thu, 26 Jan 2012 22:14:27 +0000 (22:14 +0000)]
Make clz/ctz builtins defined for zero on ARM targets. rdar://10732455
ARM supports clz and ctz directly and both operations have well-defined
results for zero. There is no disadvantage in performance to using the
defined-at-zero versions of llvm.ctlz/cttz intrinsics. We're running into
ARM-specific code written with the assumption that __builtin_clz(0) == 32,
even though that value is technically undefined. The code is failing now
because of llvm optimizations that are taking advantage of the undef
behavior (specifically svn r147255). There's nothing wrong with that
optimization on x86 where any incorrect assumptions about __builtin_clz(0)
will quickly be exposed. For ARM, though, optimizations based on that undef
behavior are likely to cause subtle bugs. Other targets with defined-at-zero
clz/ctz support may want to override the default behavior as well.
Keep track of the original target the user specified before
normalization. This used to be captured in DefaultTargetTriple and is
used for the (optional) $triple-$tool lookup for cross-compilation.
Do this properly by making it an attribute of the toolchain and use it
in combination with the computed triple as index for the toolchain
lookup.
Ted Kremenek [Thu, 26 Jan 2012 21:29:00 +0000 (21:29 +0000)]
Change references to 'const ProgramState *' to typedef 'ProgramStateRef'.
At this point this is largely cosmetic, but it opens the door to replace
ProgramStateRef with a smart pointer that more eagerly acts in the role
of reclaiming unused ProgramState objects.
objc-arc: introduce -no-finalize-removal which in gc mode,
leaves "finalize' behind and in arc mode, does not
include it. This allows the migrated source to be compiled
in both gc and arc mode. // rdar://10532441
John McCall [Thu, 26 Jan 2012 20:04:03 +0000 (20:04 +0000)]
Don't suppress access-control or invalid-type diagnostics from a
declarator just because we were able to build an invalid decl
for it. The invalid-type diagnostics, in particular, are still useful
to know, and may indicate something about why the decl is invalid.
Also, recover from an illegal pointer/reference-to-unqualified-retainable
type using __strong instead of __autoreleasing; in general, a random
object is much more likely to be __strong, so this avoids unnecessary
cascading errors in the most common case.
Chandler Carruth [Thu, 26 Jan 2012 09:28:50 +0000 (09:28 +0000)]
Suppress any warnings from this test. They aren't interesting, and they
end up in the same output file as the layout stuff. There may even be
a race condition which is causing this output to confuse the FileCheck
in some cases. I actually don't know how on earth the parsing of the
layout file even works given that there are diagnostics in the middle of
it. ;]
Douglas Gregor [Thu, 26 Jan 2012 07:55:45 +0000 (07:55 +0000)]
Extend the ExternalASTSource interface to allow the AST source to
provide the layout of records, rather than letting Clang compute
the layout itself. LLDB provides the motivation for this feature:
because various layout-altering attributes (packed, aligned, etc.)
don't get reliably get placed into DWARF, the record layouts computed
by LLDB from the reconstructed records differ from the actual layouts,
and badness occurs. This interface lets the DWARF data drive layout,
so we don't need the attributes preserved to get the answer write.
The testing methodology for this change is fun. I've introduced a
variant of -fdump-record-layouts called -fdump-record-layouts-simple
that always has the simple C format and provides size/alignment/field
offsets. There is also a -cc1 option -foverride-record-layout=<file>
to take the output of -fdump-record-layouts-simple and parse it to
produce a set of overridden layouts, which is introduced into the AST
via a testing-only ExternalASTSource (called
LayoutOverrideSource). Each test contains a number of records to lay
out, which use various layout-changing attributes, and then dumps the
layouts. We then run the test again, using the preprocessor to
eliminate the layout-changing attributes entirely (which would give us
different layouts for the records), but supplying the
previously-computed record layouts. Finally, we diff the layouts
produced from the two runs to be sure that they are identical.
Note that this code makes the assumption that we don't *have* to
provide the offsets of bases or virtual bases to get the layout right,
because the alignment attributes don't affect it. I believe this
assumption holds, but if it does not, we can extend
LayoutOverrideSource to also provide base offset information.
Fixes the Clang side of <rdar://problem/10169539>.
Eric Christopher [Thu, 26 Jan 2012 07:01:04 +0000 (07:01 +0000)]
Revert previous patch unifying all of the C++ record prep in one area,
the gdb testsuite complains too much about the ordering of items printed,
even if the offsets in the debug info are correct.
Bob Wilson [Thu, 26 Jan 2012 06:22:30 +0000 (06:22 +0000)]
Fix a minor bug in r148582, which made -ccc-host-triple into an alias option.
I'm not adding a testcase because -ccc-host-triple is slated to be removed,
but clang crashes if you try to use -ccc-host-triple without this fix.
Improve efficiency of Sema::MaybeBindToTemporary by working with the
canonical type directly and adding a fast path for the common case
that the type is directly a RecordType.
Eli Friedman [Thu, 26 Jan 2012 03:00:14 +0000 (03:00 +0000)]
Refactor to share code for handling return statements between lambda expressions and block literals. As it turns out, almost all the logic can be shared.
-fixit-recompile
applies fixits and recompiles the result
-fixit-to-temporary
applies fixits to temporary files
-fix-only-warnings">,
applies fixits for warnings only, not errors
Combining "-fixit-recompile -fixit-to-temporary" allows testing the result of fixits
without touching the original sources.
Rafael Espindola [Thu, 26 Jan 2012 02:02:57 +0000 (02:02 +0000)]
Fix our handling of #pragma GCC visibility.
Now the lexer just produces a token and the parser is the one responsible for
activating it.
This fixes problem like the one pr11797 where the lexer and the parser were not
in sync. This also let us be more strict on where in the file we accept
these pragmas.
Chandler Carruth [Thu, 26 Jan 2012 01:35:15 +0000 (01:35 +0000)]
Reintroduce r148981 with significantly improved regression test. Now it
both actually tests what it wants to, doesn't have bogus and broken
assertions in it, and is also formatted much more cleanly and
consistently. Probably still some more that can be improved here, but
its much better.
Original commit message:
----
Try to unbreak the FreeBSD toolchain's detection of 32-bit targets
inside a 64-bit freebsd machine with the 32-bit compatibility layer
installed. The FreeBSD image always has the /usr/lib32 directory, so
test for the more concrete existence of crt1.o. Also enhance the tests
for freebsd to clarify what these trees look like and exercise the new
code.
Thanks to all the FreeBSD folks for helping me understand what caused
the failure and how we might fix it. =] That helps a lot. Also, yay
build bots.
Ted Kremenek [Wed, 25 Jan 2012 23:47:14 +0000 (23:47 +0000)]
Rework flushing of diagnostics to PathDiagnosticConsumer. Now all the reports are batched up before being flushed
to the underlying consumer implementation. This allows us to unique reports across analyses to multiple functions (which
shows up with inlining).
Revert r148981 because it fails test/Driver/freebsd.c
Original log:
Author: chandlerc <chandlerc@91177308-0d34-0410-b5e6-96231b3b80d8>
Date: Wed Jan 25 21:32:31 2012 +0000
Try to unbreak the FreeBSD toolchain's detection of 32-bit targets
inside a 64-bit freebsd machine with the 32-bit compatibility layer
installed. The FreeBSD image always has the /usr/lib32 directory, so
test for the more concrete existence of crt1.o. Also enhance the tests
for freebsd to clarify what these trees look like and exercise the new
code.
Thanks to all the FreeBSD folks for helping me understand what caused
the failure and how we might fix it. =] That helps a lot. Also, yay
build bots.
projects / clang / log