Part of rdar://13622687

llvm-svn: 180207

Part of rdar://13622687

llvm-svn: 180206

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

driver tests. These tests check the driver only and do not require mips
target.

llvm-svn: 180042

Mips backend.

llvm-svn: 179981

of system include directories with extern "C" semantics.

llvm-svn: 179979

Sourcery CodeBench and modern FSF Mips toolchains require a bit more
complicated algorithm to calculate headers, libraries and sysroot paths
than implemented by Clang driver now. The main problem is that all these
paths depend on a set of command line arguments additionally to a target
triple value. For example, let $TC is a toolchain installation directory.
If we compile big-endian 32-bit mips code, crtbegin.o is in the
$TC/lib/gcc/mips-linux-gnu/4.7.2 folder and the toolchain's linker requires
--sysroot=$TC/mips-linux-gnu/libc argument. If we compile little-endian
32-bit soft-float mips code, crtbegin.o is in the
$TC/lib/gcc/mips-linux-gnu/4.7.2/soft-float/el folder and the toolchain's
linker requires --sysroot=$TC/mips-linux-gnu/libc/soft-float/el argument.

1. Calculate MultiarchSuffix using all necessary command line options and
   use this MultiarchSuffix to detect crtbegin.o location in the
   GCCInstallationDetector::ScanLibDirForGCCTriple() routine.
2. If a user does not provide --sysroot argument to the driver explicitly,
   calculate new sysroot value based on command line options. Then use this
   calculated sysroot path:
   a. To populate a file search paths list in the Linux::Linux() constructor.
   b. To find Mips toolchain specific include headers directories
      in the Linux::AddClangSystemIncludeArgs() routine.
   c. To provide -–sysroot argument for a linker.

Note:
- The FSF's tree slightly differs (folder names) and is not supported
  yet.
- New addExternCSystemIncludeIfExits() routine is a temporary solution.
  I plan to move path existence check to the addExternCSystemInclude()
  routine by a separate commit.

The patch reviewed by Rafael Espindola.
http://llvm-reviews.chandlerc.com/D644

llvm-svn: 179934

See http://gcc.gnu.org/onlinedocs/gcc/Language-Independent-Options.html

llvm-svn: 179728

 - There is no reason to have a modules specific flag for disabling
   autolinking. Instead, convert the existing flag into -fno-autolink (which
   should cover other autolinking code generation paths like #pragmas if and
   when we support them).

llvm-svn: 179612

CodeGenCXX/vtable-debug-info.cpp
Driver/objc++-cpp-output.mm
Driver/objc-cpp-output.m

llvm-svn: 179602

llvm-svn: 179507

llvm-svn: 179506

llvm-svn: 179489

llvm-svn: 179484

two new options –msingle-float and –mdouble-float. These options can be
used simultaneously with float ABI selection options (-mfloat-abi,
-mhard-float, -msoft-float). They mark whether a floating-point
coprocessor supports double-precision operations.

llvm-svn: 179481

I have checked that the test still fails when the "|| !P.isRegularFile()" from
the original patch is removed.

llvm-svn: 179464

1) Driver/output-file-is-dir.c - Checks for object file which can't
be created for Hexagon since assembler is unavailable.
2) PCH/cxx-typeid.cpp - 'typeinfo' include file is unavailable for Hexagon.

llvm-svn: 179385

llvm-svn: 179338

Patch by John Marino.

llvm-svn: 179334

This new option is the default, but it is useful to have a flag to override
-mno-implicit-float by putting -mimplicit-float later on the command line.

llvm-svn: 179309

llvm-svn: 179299

This required some tedious reordering to match clang's order.
Presumably these ObjC tests were generated based on llvm-gcc's output
ordering.

llvm-svn: 179282

just assembling a file and have passed the option.

llvm-svn: 179218

The escaping interaction between Python and grep doesn't work on my
system.  This change fixes the tests for me.

llvm-svn: 179214

llvm-svn: 179181

One more follow-up to r179082 - parse PIC/PIE arguments even on platfroms that force default PIC (like Darwin x86-64), otherwise specifying -fPIC will produce bogus unused argument warning

llvm-svn: 179092

llvm-svn: 179089

Differential Revision: http://llvm-reviews.chandlerc.com/D502

llvm-svn: 179082

support.

Caveat: Other than the existing segmented stacks support, no
claims are made of this working.

llvm-svn: 178744

llvm-svn: 178669

llvm-svn: 178607

llvm-svn: 178510

v2:
  - Add a test case

v3:
  - Use the -### clang option in the tests

llvm-svn: 178499

gcc provides -mfprnd and -mno-fprnd for controlling the fprnd target
feature; support these options as well.

llvm-svn: 178414

gcc provides -mpopcntd and -mno-popcntd for controlling the popcntd target
feature; support these options as well.

llvm-svn: 178235

toolchain flags for MIPS targets.

llvm-svn: 178232

gcc provides -mmfcrf and -mno-mfcrf for controlling what we call
the mfocrf target feature. Also, PPC is now making use of the
static function AddTargetFeature used by the Mips Driver code.

llvm-svn: 178227

llvm-svn: 177840

llvm-svn: 177838

Changing -ccc-install-dir to affect cc1's resource-dir setting broke our
internal LNT tests. After discussing the situation with Jim, we've decided to
pursue an alternate approach. We really want the resource-dir to be located
relative to clang, even when using -ccc-install-dir, but we're going to
add a fallback setting for the libc++ headers if they don't exist alongside
the compiler.

llvm-svn: 177815