We switch the order of offset and field type to make TBAAStructType node
(name, parent node, offset) similar to scalar TBAA node (name, parent node).
llvm-svn: 180653
structs are compatible, check whether the fields
of the structs have the same name. This prevents
erroneous coalescing of (in particular) anonymous
structs.
llvm-svn: 180644
In an Objective-C for-in loop "for (id element in collection) {}", the loop
will run 0 times if the collection is nil. This is because the for-in loop
is implemented using a protocol method that returns 0 when there are no
elements to iterate, and messages to nil will result in a 0 return value.
At some point we may want to actually model this message send, but for now
we may as well get the nil case correct, and avoid the false positives that
would come with this case.
<rdar://problem/13744632>
llvm-svn: 180639
Casts to bool (and _Bool) are equivalent to checks against zero,
not truncations to 1 bit or 8 bits.
This improved reasoning does cause a change in the behavior of the alpha
BoolAssignment checker. Previously, this checker complained about statements
like "bool x = y" if 'y' was known not to be 0 or 1. Now it does not, since
that conversion is well-defined. It's hard to say what the "best" behavior
here is: this conversion is safe, but might be better written as an explicit
comparison against zero.
More usefully, besides improving our model of booleans, this fixes spurious
warnings when returning the address of a local variable cast to bool.
<rdar://problem/13296133>
llvm-svn: 180638
-Make sure that a deserialized external decl gets added to the TU scope.
-When associating an identifier with a set of decls, use the most recent local ones,
if they exist, otherwise associating decls from modules (that came after a local one)
will lead to an incomplete reconstructed re-declaration chain.
rdar://13712705
llvm-svn: 180634
a comment, grab the first comment found in its class
heirarchy. Also, when a category is mossing a comment,
grab comment of its primary class. // rdar://13647476
llvm-svn: 180629
In -fparse-all-comments mode empty '//' comments were recognized as
RCK_Invalid, and were not merged with next and previous lines.
Patch by Amin Shali.
llvm-svn: 180625
patch -n r180198.
When reporting on missing property accessor implementation in
categories, do not report when they are declared in primary class,
class's protocol, or one of it super classes or in of the other
categories. // rdar://13713098
llvm-svn: 180580
When we find a friend declaration we have to skip transparent contexts for doing
lookups, but we should not skip them when inserting the new decl if the lookup
found nothing.
Fixes PR15841.
llvm-svn: 180571
Deeply nested expressions basically break clang-format's memoization.
This patch slightly improves the situations and makes expressions like
aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(
aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(
aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(
aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(aaaaa(
aaaaa(aaaaa())))))))))))))))))))))))))))))))))))))));
work.
llvm-svn: 180264
Instead, we check for one line extern "C" context in linkage computation and
when deciding if a variable is a definition.
This hopefully completes the transition to having "as written" semantics for
hasExternalStorage.
llvm-svn: 180258
This enables formattings like:
#define A \
int aaaa; \
int b; \
int ccc; \
int dddddddddd;
Enabling this for Google/Chromium styles only as I don't know whether it
is desired for Clang/LLVM.
llvm-svn: 180253
This includes the following fixes:
- Implement 4 subtly different variants of qualifier mangling and use them
in what I believe are the right places.
- Fix handling of array types. Previously we were always decaying them,
which is wrong if the type appears as a template argument, pointee,
referent etc.
Fixes PR13182.
Differential Revision: http://llvm-reviews.chandlerc.com/D709
llvm-svn: 180250
We get a CallEnter with a null expression, when processing a destructor. All other users of
CallEnter::getCallExpr work fine with null as return value.
(Addresses PR15832, Thanks to Jordan for reducing the test case!)
llvm-svn: 180234
Specifically, allow the flags that fall under this umbrella (i.e., -O3,
-ffast-math, and -fstrict-aliasing) to be overridden/disabled with the
individual -O[0|1|2|s|z]/-fno- flags.
This also fixes the handling of various floating point optimization
flags that are modified by -ffast-math (and thus -Ofast as well).
Part of rdar://13622687
llvm-svn: 180204
Chad Rosier