Anders Carlsson [Sat, 17 Apr 2010 22:54:57 +0000 (22:54 +0000)]
Simplify wide bit-field layout in CGRecordLayoutBuilder, and also fix a bug where assigning to a bit-field member would overwrite other parts of the struct.
Douglas Gregor [Sat, 17 Apr 2010 22:01:05 +0000 (22:01 +0000)]
Improve our handling of user-defined conversions as part of overload
resolution. There are two sources of problems involving user-defined
conversions that this change eliminates, along with providing simpler
interfaces for checking implicit conversions:
- It eliminates a case of infinite recursion found in Boost.
- It eliminates the search for the constructor needed to copy a temporary
generated by an implicit conversion from overload
resolution. Overload resolution assumes that, if it gets a value
of the parameter's class type (or a derived class thereof), there
is a way to copy if... even if there isn't. We now model this
properly.
Add support for '-fgnu-keywords' and '-fasm' to Clang's driver. They are not
implemented precisely the same as GCC, but the distinction GCC makes isn't
useful to represent. This allows parsing code which uses GCC-specific keywords
('asm', etc.) without parsing in a fully GNU mode.
Eric Christopher [Sat, 17 Apr 2010 02:26:23 +0000 (02:26 +0000)]
Consolidate most of the integer constant expression builtin requirement
checking into a single function and use that throughout. Remove some
now unnecessary diagnostics and update tests with now more accurate
diagnostics.
Chris Lattner [Fri, 16 Apr 2010 23:34:13 +0000 (23:34 +0000)]
make our existing "switch on bool" warning work for C. Since
the result of comparisons are 'int' in C, it doesn't work to
test just the result type of the expression.
Douglas Gregor [Fri, 16 Apr 2010 23:28:44 +0000 (23:28 +0000)]
If a non-noreturn virtual member function is guaranteed not to return,
do *not* suggest that the function could be attribute 'noreturn';
overridden functions may end up returning.
Douglas Gregor [Fri, 16 Apr 2010 22:09:46 +0000 (22:09 +0000)]
Collapse the three separate initialization paths in
TryStaticImplicitCast (for references, class types, and everything
else, respectively) into a single invocation of
InitializationSequence.
One of the paths (for class types) was the only client of
Sema::TryInitializationByConstructor, which I have eliminated. This
also simplified the interface for much of the cast-checking logic,
eliminating yet more code.
I've kept the representation of C++ functional casts with <> 1
arguments the same, despite the fact that I hate it. That fix will
come soon. To satisfy my paranoia, I've bootstrapped + tested Clang
with these changes.
Rework USR generation for symbols with no linkage. Many of the USRs are now shortened,
and we now include the file name that declares the symbol with no linkage in the USR.
USRs for such symbols are generated only in restructed cases, e.g., anonymous enum declarations,
typedefs, etc.
add another test for the undef patch just for to have peace of mind :)
this follows from C99 6.7.8p10: if it is a union, the first named member is initialized
Chris Lattner [Fri, 16 Apr 2010 21:02:32 +0000 (21:02 +0000)]
fix a bogus assertion exposed by a recent change: packing the
struct may cause it to shrink more than one byte. Before
my recent changes we compiled the new test into:
%0 = type { [6 x i8] }
@x = global %0 { [6 x i8] undef }, align 2 ; <%0*> [#uses=0]
which is obviously bogus. Now we compile it into:
%0 = type <{ i32, i8, i8 }>
@x = global %0 zeroinitializer, align 2 ; <%0*> [#uses=0]
Douglas Gregor [Fri, 16 Apr 2010 19:30:02 +0000 (19:30 +0000)]
Switch the checking of implicit casts for static_cast, C-style, and
functional casts over to InitializationSequence, eliminating a caller
of Sema::TryImplicitConversion. We also get access and ambiguity
checking "for free".
Nick Lewycky [Fri, 16 Apr 2010 18:49:45 +0000 (18:49 +0000)]
Add a write(raw_ostream&) method to RewriteBuffer. This uses an inefficient
implementation today but is the right place if we want to make it faster some
day.
Dan Gohman [Fri, 16 Apr 2010 16:28:05 +0000 (16:28 +0000)]
Remove this hard-coded buffer size. In some basic experiments preprocessing
large files, this doesn't seem significantly better than just letting
raw_ostream pick a buffer size.
This code predates raw-ostream's automatic buffer sizing; in fact, it
was introduced as part of the code which would eventually become
raw_ostream.
Dan Gohman [Fri, 16 Apr 2010 04:45:02 +0000 (04:45 +0000)]
Convert libCIndex to use the new native EXPORTED_SYMBOL_FILE mechanism.
libCIndex also has a CMakeLists.txt file which has its own code for using
the exports file. To preserve existing functionality, create a separate
darwin-specific exports file for use by this CMakeLists.txt code.
Douglas Gregor [Fri, 16 Apr 2010 00:23:51 +0000 (00:23 +0000)]
Fix a bug in caret-line-pruning logic that only happens when we have a
source line wider than the terminal where the associated fix-it line
is longer than the caret line. Previously, we would crash in this
case, which was rather unfortunate. Fixes <rdar://problem/7856226>.
Douglas Gregor [Thu, 15 Apr 2010 23:40:53 +0000 (23:40 +0000)]
Audit uses of Sema::LookupSingleName for those lookups that are
intended for redeclarations, fixing those that need it. Fixes PR6831.
This uncovered an issue where the C++ type-specifier-seq parsing logic
would try to perform name lookup on an identifier after it already had
a type-specifier, which could also lead to spurious ambiguity errors
(as in PR6831, but with a different test case).
Douglas Gregor [Thu, 15 Apr 2010 22:33:43 +0000 (22:33 +0000)]
Feed proper source-location information into Sema::LookupSingleResult,
in case it ends up doing something that might trigger diagnostics
(template instantiation, ambiguity reporting, access
reporting). Noticed while working on PR6831.
Do not generate USRs for declarations with 'no linkage' except for enums, structs, typedefs.
Those still need work to disambiguate them across translation units.
Fix PR 6844, a regression caused by the introduction of llvm_unreachable for the default
case in GRExprEngine::Visit (in r101129). Instead, enumerate all Stmt cases and have
no 'default' case in the switch statement. When we encounter a Stmt we don't handle,
we should explicitly add it to the switch statement.
Douglas Gregor [Thu, 15 Apr 2010 15:53:31 +0000 (15:53 +0000)]
Fix a few cases where enum constant handling was using
ASTContext::getTypeSize() rather than ASTContext::getIntWidth() for
the width of an integral type. The former includes padding for bools
(to the target's size) while the latter does not, so we woud end up
zero-extending bools to the target width when we shouldn't. Fixes a
crash-on-valid in the included test.
Daniel Dunbar [Thu, 15 Apr 2010 06:18:39 +0000 (06:18 +0000)]
Add TargetInfo::useBitfieldTypeAlignment().
- Used to determine whether the alignment of the type in a bit-field is
respected when laying out structures. The default is true, targets can
override this as needed.
- This is designed to correspond to the PCC_BITFIELD_TYPE_MATTERS macro in
gcc. The AST/Sema implementation only affects one line, unless I have
forgotten something. I'd appreciate further review.
- IRgen still needs to be updated to fully support this (which is effectively
PR5591).
Daniel Dunbar [Thu, 15 Apr 2010 06:09:03 +0000 (06:09 +0000)]
Driver/Frontend: Add support for -mllvm, which forwards options to the LLVM option parser.
- Note that this is a behavior change, previously -mllvm at the driver level forwarded to clang -cc1. The driver does a little magic to make sure that '-mllvm -disable-llvm-optzns' works correctly, but other users will need to be updated to use -Xclang.
Daniel Dunbar [Thu, 15 Apr 2010 03:47:33 +0000 (03:47 +0000)]
IRgen: (Reapply 101222, with fixes) Move EmitStoreThroughBitfieldLValue to use new CGBitfieldInfo::AccessInfo decomposition, instead of computing the access policy itself.
- Sadly, this doesn't seem to give any .ll size win so far. It is possible to make this routine significantly smarter & avoid various shifting, masking, and zext/sext, but I'm not really convinced it is worth it. It is tricky, and this is really instcombine's job.
- No intended functionality change; the test case is just to increase coverage & serves as a demo file, it worked before this commit.
The new fixes from r101222 are:
1. The shift to the target position needs to occur after the value is extended to the correct size. This broke Clang bootstrap, among other things no doubt.
2. Swap the order of arguments to OR, to get a tad more constant folding.
Eric Christopher [Thu, 15 Apr 2010 01:43:08 +0000 (01:43 +0000)]
Rewrite handling of 64-bit palignr intrinsics to be vector shuffles.
Stop multiplying constant by 8 accordingly in the header and change
intrinsic definition for what types we expect.
Add to existing palignr test to check that we're emitting the correct things.
Add optional timing logging for code completion results. This causes a UDP packet
containing the time taken for the code completion to be sent to a designated server
(which is specified using a compile-time -D flag).
Douglas Gregor [Thu, 15 Apr 2010 00:00:53 +0000 (00:00 +0000)]
Warn about non-aggregate classes with no user-declared constructors
that have reference or const scalar members, since those members can
never be initializer or modified. Fixes <rdar://problem/7804350>.
Douglas Gregor [Wed, 14 Apr 2010 23:11:21 +0000 (23:11 +0000)]
Always diagnose and complain about problems in
ResolveAddressOfOverloadedFunction when asked to complain. Previously,
we had some weird handshake where ResolveAddressOfOverloadedFunction
expected its caller to handle some of the diagnostics but not others,
and yet there was no way for the caller to know which case we were
in. Eliminate this madness, fixing <rdar://problem/7765884>.
Douglas Gregor [Wed, 14 Apr 2010 22:19:45 +0000 (22:19 +0000)]
Once we've emitted a fatal diagnostic, keep counting errors but with a
separate count of "suppressed" errors. This way, semantic analysis
bits that depend on the error count to determine whether problems
occured (e.g., some template argument deduction failures, jump-scope
checking) will not get confused.
The actual problem here is that a missing #include (which is a fatal
error) could cause the jump-scope checker to run on invalid code,
which it is not prepared to do. Trivial fix for both
<rdar://problem/7775941> and <rdar://problem/7775709>.
Douglas Gregor [Wed, 14 Apr 2010 20:04:41 +0000 (20:04 +0000)]
Teach typo correction about various language keywords. We can't
generally recover from typos in keywords (since we would effectively
have to mangle the token stream). However, there are still benefits to
typo-correcting with keywords:
- We don't make stupid suggestions when the user typed something
that is similar to a keyword.
- We can suggest the keyword in a diagnostic (did you mean
"static_cast"?), even if we can't recover and therefore don't have
a fix-it.
Douglas Gregor [Wed, 14 Apr 2010 17:09:22 +0000 (17:09 +0000)]
Return the corrected DeclarationName from Sema::CorrectTypo rather
than just a bool indicating that correction occurred. No actual
functionality change (it's still always used like a bool), but this
refactoring will be used to support typo correction to keywords.
Douglas Gregor [Wed, 14 Apr 2010 16:09:52 +0000 (16:09 +0000)]
When diagnosing suspicious precedence or assignments, move the fix-it
that adds parentheses from the main diagnostic down to a new
note. This way, when the fix-it represents a choice between two
options, each of the options is associted with a note. There is no
default option in such cases. For example:
/Users/dgregor/t.c:2:9: warning: & has lower precedence than ==; ==
will be
evaluated first [-Wparentheses]
if (x & y == 0) {
^~~~~~~~
/Users/dgregor/t.c:2:9: note: place parentheses around the &
expression to
evaluate it first
if (x & y == 0) {
^
( )
/Users/dgregor/t.c:2:9: note: place parentheses around the ==
expression to
silence this warning
if (x & y == 0) {
^
( )
projects / clang / log