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
[analyzer] Fix test to work on non-LP64 systems.

Thanks for the original catch in r168303, Takumi.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168671 91177308-0d34-0410-b5e6-96231b3b80d8
scan-build: Respect TMPDIR on all platforms, not just Darwin (PR14438).

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168672 91177308-0d34-0410-b5e6-96231b3b80d8
This patch addresses an incompatibility relative to the 64-bit PowerPC
ELF ABI.

Complex values are to be passed in registers as though the real and
imaginary parts were passed as separate parameters.  Prior to this
patch, complex values were passed as byval aggregates.  It turns out
that specifying getDirect() for all complex types when classifying the
argument type results in the desired behavior.

The new Clang test case verifies that the correct LLVM IR is generated
for caller and callee for each of the underlying types for _Complex.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@168673 91177308-0d34-0410-b5e6-96231b3b80d8