MIPS: Move code calculates CPU and ABI names to the separate function to reuse this function later.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154269 91177308-0d34-0410-b5e6-96231b3b80d8
MIPS: Pass -mabi option to the assmbler when compile MIPS targets.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154270 91177308-0d34-0410-b5e6-96231b3b80d8
ext_reserved_user_defined_literal must not default to Error in MicrosoftMode. Hence create ext_ms_reserved_user_defined_literal that doesn't default to Error; otherwise MSVC headers won't parse. 

Fixes PR12383.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154273 91177308-0d34-0410-b5e6-96231b3b80d8
Don't forget to evaluate the subexpression in a null pointer cast. If we're
converting from std::nullptr_t, the subexpression might have side-effects.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154278 91177308-0d34-0410-b5e6-96231b3b80d8
FileCheck-ize this test.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154289 91177308-0d34-0410-b5e6-96231b3b80d8
Rephrase the preprocessor test to directly use CC1 and not bother
testing any of the strange driver behavior. We already have some tiny
tests for the driver behavior, and I'm going to expand them greatly in
the next commit.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154290 91177308-0d34-0410-b5e6-96231b3b80d8
Teach Clang about PIE compilations. This is the first step of PR12380.

First, this patch cleans up the parsing of the PIC and PIE family of
options in the driver. The existing logic failed to claim arguments all
over the place resulting in kludges that marked the options as unused.
Instead actually walk all of the arguments and claim them properly.

We now treat -f{,no-}{pic,PIC,pie,PIE} as a single set, accepting the
last one on the commandline. Previously there were lots of ordering bugs
that could creep in due to the nature of the parsing. Let me know if
folks would like weird things such as "-fPIE -fno-pic" to turn on PIE,
but disable full PIC. This doesn't make any sense to me, but we could in
theory support it.

Options that seem to have intentional "trump" status (-static, -mkernel,
etc) continue to do so and are commented as such.

Next, a -pie-level flag is threaded into the frontend, rigged to
a language option, and handled preprocessor, setting up the appropriate
defines. We'll now have the correct defines when compiling with -fpie.

The one place outside of the preprocessor that was inspecting the PIC
level (as opposed to the relocation model, which is set and handled
separately, yay!) is in the GNU ObjC runtime. I changed it to exactly
preserve existing behavior. If folks want to change its behavior in the
face of PIE, they can do that in a separate patch.

Essentially the only functionality changed here is the preprocessor
defines and bug-fixes to the argument management.

Tests have been updated and extended to test all of this a bit more
thoroughly.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154291 91177308-0d34-0410-b5e6-96231b3b80d8
Wire up -fpie and -fPIE to LLVM's newly added TargetOptions. No test
case as we don't currently have any way of dumping target options or
otherwise observing this. Another small step toward fixing PR12380. With
this we generate TLS accesses using the static model instead of the
dynamic model, but we're still generating suboptimal code under the
mistaken assumption that the TLS offset might be greater than 2^32, and
therefor not viable as an immediate offset of a segment register.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154298 91177308-0d34-0410-b5e6-96231b3b80d8
Make a modern Objective-C runtime the default target for *BSD.  Don't yet change this on GNU/Linux, where the GCC runtime still tends to be used.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154315 91177308-0d34-0410-b5e6-96231b3b80d8
Factor out ARM floating ABI determination to new routine 


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154318 91177308-0d34-0410-b5e6-96231b3b80d8
Add -fobjc-trace to emit a call before and after each Objective-C message send
for hooking in code flow visualisation applications.  



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154321 91177308-0d34-0410-b5e6-96231b3b80d8
Fix bugs found by -Wconstant-conversion improvements currently under review.

Specifically, using a an integer outside [0, 1] as a boolean constant seems to
be an easy mistake to make with things like "x == a || b" where the author
intended "x == a || x == b".

The bug caused by calling SkipUntil with three token kinds was also identified
by a VC diagnostic & reported by Francois Pichet as review feedback for my
commit r154163. I've included test cases to verify the error recovery that was
broken/poorly implemented due to this bug.

The other fix (lib/Sema/SemaExpr.cpp) seems like that code was never actually
reached in any of Clang's tests & is related to Objective C features I'm not
familiar with, so I've not been able to construct a test case for it. Perhaps
someone else can.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154325 91177308-0d34-0410-b5e6-96231b3b80d8
Revert r154321, pending more discussion.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154327 91177308-0d34-0410-b5e6-96231b3b80d8
Fixes a fix to finding the current directory:
We currently want to look whether PWD is available - if PWD is available it will
get us the non-resolved current path, while fs::current_path will resolve
symlinks. The long term fix is to not rely on that behavior any more.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154330 91177308-0d34-0410-b5e6-96231b3b80d8
objective-c: Remove -fno-objc-default-synthesize-properties
as the driver option.
// rdar://11209719


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154331 91177308-0d34-0410-b5e6-96231b3b80d8
objective-c: remove -fobjc-default-synthesize-properties from the driver.
cc1 option remains though to invoke default property synthesis.
// rdar://11209719


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154334 91177308-0d34-0410-b5e6-96231b3b80d8
Implementing a test for the use of PWD to base finding the
correct compile commands on, based on an idea by Jordan Rose.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154335 91177308-0d34-0410-b5e6-96231b3b80d8
Author: Daniel Dunbar <daniel@zuster.org>
--- log message follows this test ---
[tests] Fixup some tests to work in "CLANG_IS_PRODUCTION" mode.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154342 91177308-0d34-0410-b5e6-96231b3b80d8
Fix the access check performed as part of the determination of whether
to define a special member function as deleted so that it properly
establishes an object context for the accesses to the base subobject
members.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154343 91177308-0d34-0410-b5e6-96231b3b80d8
My original patch missed the virtual-base case for destroying
base-class subojects.

Incidentally, thinking about virtual bases makes it clear to me that
we're not appropriately computing the access to the virtual base's
member because we're not computing the best possible access to the
virtual base at all;  in fact, we're basically assuming it's public.
I'll file a separate PR about that.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154346 91177308-0d34-0410-b5e6-96231b3b80d8