[Frontend] Remove HeaderSearchOptions::Entry::IsInternal, which is unused.

llvm-svn: 173866

[Frontend] Add an ExternCSystem include entry group.

- The only group where it makes sense for the "ExternC" bit is System, so this
simplifies having to have the extra isCXXAware (or ImplicitExt

[Frontend] Add an ExternCSystem include entry group.

- The only group where it makes sense for the "ExternC" bit is System, so this
simplifies having to have the extra isCXXAware (or ImplicitExternC, depending
on what code you talk to) bit caried around.

llvm-svn: 173859

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[Frontend] Make the include dir group independent from the "use sysroot" bit.

- This slightly decouples the path handling, since before the group sometimes
dominated the "use sysroot" bit, but i

[Frontend] Make the include dir group independent from the "use sysroot" bit.

- This slightly decouples the path handling, since before the group sometimes
dominated the "use sysroot" bit, but it was still passed in via the API.

- No functionality change.

llvm-svn: 173855

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[ubsan] Implement the -fcatch-undefined-behavior flag using a trapping
implementation; this is much more inline with the original implementation
(i.e., pre-ubsan) and does not require run-time librar

[ubsan] Implement the -fcatch-undefined-behavior flag using a trapping
implementation; this is much more inline with the original implementation
(i.e., pre-ubsan) and does not require run-time library support.

The trapping implementation can be invoked using either '-fcatch-undefined-behavior'
or '-fsanitize=undefined-trap -fsanitize-undefined-trap-on-error', with the latter
being preferred. Eventually, the -fcatch-undefined-behavior' flag will be removed.

llvm-svn: 173848

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Enable the global module index by default. Introduce the
-fno-modules-global-index -cc1 option to allow one to disable the
index for performance testing purposes, but with a 10% win in
-fsyntax-only

Enable the global module index by default. Introduce the
-fno-modules-global-index -cc1 option to allow one to disable the
index for performance testing purposes, but with a 10% win in
-fsyntax-only time, there is no reason a user would do this.

llvm-svn: 173707

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[Frontend] Remove another IsUserSpecified member variable that is now unused.

llvm-svn: 173412

[Frontend] The -iwithprefix option belongs in the After category, according to
GCC docs.
- Found by inspection.

llvm-svn: 173410

Rename the -cc1 option "-generate-module-index" to
"-fmodules-global-index" and expand its behavior to include both the
use and generation of the global module index.

llvm-svn: 173404

[analyzer] Replace "-analyzer-ipa" with "-analyzer-config ipa".

The idea is to eventually place all analyzer options under
"analyzer-config". In addition, this lays the ground for introduction of
a

[analyzer] Replace "-analyzer-ipa" with "-analyzer-config ipa".

The idea is to eventually place all analyzer options under
"analyzer-config". In addition, this lays the ground for introduction of
a high-level analyzer mode option, which will influence the
default setting for IPAMode.

llvm-svn: 173385

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Implement the writer side of the global module index.

The global module index is a "global" index for all of the module
files within a particular subdirectory in the module cache, which
keeps track

Implement the writer side of the global module index.

The global module index is a "global" index for all of the module
files within a particular subdirectory in the module cache, which
keeps track of all of the "interesting" identifiers and selectors
known in each of the module files. One can perform a fast lookup in
the index to determine which module files will have more information
about entities with a particular name/selector. This information can
help eliminate redundant lookups into module files (a serious
performance problem) and help with creating auto-import/auto-include
Fix-Its.

The global module index is created or updated at the end of a
translation unit that has triggered a (re)build of a module by
scraping all of the .pcm files out of the module cache subdirectory,
so it catches everything. As with module rebuilds, we use the file
system's atomicity to synchronize.

llvm-svn: 173301

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Add a new LangOpt NativeHalfType. This option allows for native half/fp16
operations (as opposed to storage only half/fp16).

Also add some semantic checks for OpenCL half types.

llvm-svn: 173254

[ms-inline asm] Remove the -fenable-experimental-ms-inline-asm flag. MS-style
inline assembly can be enable with -fasm-blocks or -fms-extensions alone.

llvm-svn: 173186

Add top-level Clang flag -f(no-)sanitize-address-zero-base-shadow that makes AddressSanitizer use bottom of the address space for the shadow memory. On Linux it can be used with -fPIE/-pie to improve

Add top-level Clang flag -f(no-)sanitize-address-zero-base-shadow that makes AddressSanitizer use bottom of the address space for the shadow memory. On Linux it can be used with -fPIE/-pie to improve performance.

llvm-svn: 172974

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Nuke SetUpBuildDumpLog.

Also, it was the only reason that `argc` and `argv` were being passed
into createDiagnostics, so remove those parameters and clean up callers.

llvm-svn: 172945

[ubsan] Add support for -fsanitize-blacklist

llvm-svn: 172808

Add -fmodules-autolink/-fno-modules-autolink (defaults to on) so that
users can explicitly enable/disable modules autolinking.

llvm-svn: 172592

Add -fopenmp -cc1 option and wire it up to define _OPENMP, from Alexey Bataev!

llvm-svn: 172509

Remove useless 'llvm::' qualifier from names like StringRef and others that are
brought into 'clang' namespace by clang/Basic/LLVM.h

llvm-svn: 172323

s/CPlusPlus0x/CPlusPlus11/g

llvm-svn: 171367

[ubsan] Recover by default, use -fno-sanitize-recover to disable.

llvm-svn: 171264

Support -fsanitize-memory-track-origins.

llvm-svn: 171020

Sort the includes according to the coding standard.

llvm-svn: 170905

Remove duplicate includes.

llvm-svn: 170903

[driver, ms-inline asm] -fms-compatibility enables -fms-extensions, so this should enable
the AsmBlocks language extension as well.
rdar://12808010

llvm-svn: 169448

[driver, ms-inline asm] Have -fms-extensions enable the AsmBlocks language
option. MS-style inline asm can now be enabled by either -fasm-blocks or
-fms-extensions.
rdar://12808010

llvm-svn: 169445