Merge used flags so that we don't have to iterate on isUsed. With this change
"clang -cc1 -fsyntax-only" on the preprocessed output of

#define M extern int a;
#define M2 M M
#define M4 M2 M2
#define M8 M4 M4
#define M16 M8 M8
#define M32 M16 M16
#define M64 M32 M32
#define M128 M64 M64
#define M256 M128 M128
#define M512 M256 M256
#define M1024 M512 M512
#define M2048 M1024 M1024
#define M4096 M2048 M2048
#define M8192 M4096 M4096
#define M16384 M8192 M8192
M16384

goes from 2.994s to 1.416s. GCC is at 0.022s, so we still have a long way to go.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168519 91177308-0d34-0410-b5e6-96231b3b80d8
Sema: Provide a valid source location when instantiating templates based on a CXXDefaultArgExpr.

Fixes PR13758.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168521 91177308-0d34-0410-b5e6-96231b3b80d8
Make err_module_expected_semi consistent with all the other expected_semi diags.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168535 91177308-0d34-0410-b5e6-96231b3b80d8
Revert r168519, "Merge used flags so that we don't have to iterate on isUsed. With this change"

It brought bunch of (possibly false) warnings.

llvm/unittests/VMCore/PassManagerTest.cpp:60:22: warning: variable 'ID' is not needed and will not be emitted [-Wunneeded-internal-declaration]
    char ModuleNDNM::ID=0;
                     ^
llvm/unittests/VMCore/PassManagerTest.cpp:86:22: warning: variable 'ID' is not needed and will not be emitted [-Wunneeded-internal-declaration]
    char ModuleNDM2::ID=0;
                     ^
llvm/unittests/VMCore/PassManagerTest.cpp:106:21: warning: variable 'ID' is not needed and will not be emitted [-Wunneeded-internal-declaration]
    char ModuleDNM::ID=0;
                    ^
llvm/unittests/VMCore/PassManagerTest.cpp:217:16: warning: variable 'initcount' is not needed and will not be emitted [-Wunneeded-internal-declaration]
    int LPass::initcount=0;
               ^
llvm/unittests/VMCore/PassManagerTest.cpp:218:16: warning: variable 'fincount' is not needed and will not be emitted [-Wunneeded-internal-declaration]
    int LPass::fincount=0;
               ^
llvm/unittests/VMCore/PassManagerTest.cpp:259:16: warning: variable 'inited' is not needed and will not be emitted [-Wunneeded-internal-declaration]
    int BPass::inited=0;
               ^
llvm/unittests/VMCore/PassManagerTest.cpp:260:16: warning: variable 'fin' is not needed and will not be emitted [-Wunneeded-internal-declaration]
    int BPass::fin=0;
               ^
llvm/unittests/VMCore/PassManagerTest.cpp:283:24: warning: variable 'ID' is not needed and will not be emitted [-Wunneeded-internal-declaration]
    char OnTheFlyTest::ID=0;
                       ^
8 warnings generated.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168549 91177308-0d34-0410-b5e6-96231b3b80d8
Fix test case for linking with sanitizer opts added in r168428.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168562 91177308-0d34-0410-b5e6-96231b3b80d8
Add a basic testcase for the "variable is not needed" warning and one that
regressed in r168519.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168563 91177308-0d34-0410-b5e6-96231b3b80d8
Add r168519 back, but with a fix to also merge the used flag in variables.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168564 91177308-0d34-0410-b5e6-96231b3b80d8
PR14428: When instantiating a 'new' expression, if we had a non-dependent
initialization, don't rebuild it. Remove a couple of hacks which were trying to
work around this. Fix the special case for one-argument CXXConstructExprs to
not apply if the one argument is a default argument.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168582 91177308-0d34-0410-b5e6-96231b3b80d8
Fix PR14413 - incorrect mangling of anonymous namespaces with -cxx-abi microsoft

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168583 91177308-0d34-0410-b5e6-96231b3b80d8
MSPGCC renamed ISR vectors from vector_<address> to __isr_<number>. This patch makes Clang reflect this scheme.
Patch by Job Noorman!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168598 91177308-0d34-0410-b5e6-96231b3b80d8
[analyzer] Fix a crash reported in PR 14400.

The AllocaRegion did not have the superRegion (based on LocationContext)
as part of it's hash. As a consequence, the AllocaRegions from
different frames were uniqued to be the same region.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168599 91177308-0d34-0410-b5e6-96231b3b80d8
[analyzer] SATestBuild.py: allow make builds to disable parallelization

Before, SATestBuild unilaterally added '-j<n>' to every project built with
'make'. Now, we check and see if there's a -j option already specified, which
allows a project to explicitly be marked '-j1'.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168603 91177308-0d34-0410-b5e6-96231b3b80d8
check that always_inline attribute works with -fno-inline

Clean up the existing test to use FileCheck.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168607 91177308-0d34-0410-b5e6-96231b3b80d8
Add missing "break".  Thanks to Craig for spotting it.

I'm looking at ways to fix the relevant test so it can catch this sort of mistake.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168618 91177308-0d34-0410-b5e6-96231b3b80d8
Improve diagnostic on C++11 attribute specifiers that appear at wrong syntactic locations around class specifiers.

This change list implemented logic that explicitly detects several combinations of locations where C++11 attribute
specifiers might be incorrectly placed within a class specifier. Previously we emit generic diagnostics like 
"expected identifier" for such cases; now we emit specific diagnostic against the misplaced attributes, this also 
fixed a bug in old code where attributes appear at legitimate locations were incorrectly rejected.

Thanks to Richard Smith for reviewing!



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168626 91177308-0d34-0410-b5e6-96231b3b80d8
Frontend: Create a virtual file for named pipe inputs.
 - This ensures we see the right buffer size for the file.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168636 91177308-0d34-0410-b5e6-96231b3b80d8
Move Clang code owners list from llvm/ to cfe/.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168639 91177308-0d34-0410-b5e6-96231b3b80d8
Duplicate some common owners between Clang and LLVM.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168650 91177308-0d34-0410-b5e6-96231b3b80d8
Revert r168411 for now.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168667 91177308-0d34-0410-b5e6-96231b3b80d8
Add a testcase that r168411 would break.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168669 91177308-0d34-0410-b5e6-96231b3b80d8