update in LLVM r199044.

llvm-svn: 199045

llvm-svn: 199042

llvm-svn: 198689

The backend string is only verified when available as it's possible to run
clang IRGen for targets that haven't been built or don't exist in LLVM.

llvm-svn: 198309

Summary:
This is an alternative to http://llvm-reviews.chandlerc.com/D2475
suggested by Chandler.

Reviewers: chandlerc, rnk, dblaikie

CC: cfe-commits, earthdok

Differential Revision: http://llvm-reviews.chandlerc.com/D2478

llvm-svn: 198073

Cleanup in preparation for enhanced DataLayout checking.

llvm-svn: 197832

This adds -freroll-loops (and -fno-reroll-loops in the usual way) to enable
loop rerolling as part of the optimization pass manager. This transformation
can enable vectorization, reduce code size (or both).

Briefly, loop rerolling can transform a loop like this:

for (int i = 0; i < 3200; i += 5) {
  a[i]     += alpha * b[i];
  a[i + 1] += alpha * b[i + 1];
  a[i + 2] += alpha * b[i + 2];
  a[i + 3] += alpha * b[i + 3];
  a[i + 4] += alpha * b[i + 4];
}

into this:

for (int i = 0; i < 3200; ++i) {
  a[i] += alpha * b[i];
}

Loop rerolling is currently disabled by default at all optimization levels.

llvm-svn: 194967

This adds a new option -fprofile-sample-use=filename to Clang. It
tells the driver to schedule the SampleProfileLoader pass and passes
on the name of the profile file to use.

llvm-svn: 194567

check using the ubsan runtime) and -fsanitize=local-bounds (for the middle-end
check which inserts traps).

Remove -fsanitize=local-bounds from -fsanitize=undefined. It does not produce
useful diagnostics and has false positives (PR17635), and is not a good
compromise position between UBSan's checks and ASan's checks.

Map -fbounds-checking to -fsanitize=local-bounds to restore Clang's historical
behavior for that flag.

llvm-svn: 193205

Also add some documentation.

Differential Revision: http://llvm-reviews.chandlerc.com/D1346

llvm-svn: 188403

DataFlowSanitizer is a generalised dynamic data flow analysis.

Unlike other Sanitizer tools, this tool is not designed to detect a
specific class of bugs on its own.  Instead, it provides a generic
dynamic data flow analysis framework to be used by clients to help
detect application-specific issues within their own code.

Differential Revision: http://llvm-reviews.chandlerc.com/D966

llvm-svn: 187925

llvm-svn: 187617

llvm-svn: 187092

Use function attributes to pass along the stack protector buffer size instead of making it a target option.

llvm-svn: 186218

usage of clang as a library.

llvm-svn: 184812

given -disable-free. (Reviewed by John McCall over IRC.)

llvm-svn: 184595

The simplify-libcalls pass has been removed from LLVM.  Thus
'PMBuilder.DisableSimplifyLibCalls' does not exist anymore.
The disabling/enabling of library call simplifications is
done through the TargetLibraryInfo which is already wired
up in Clang.

llvm-svn: 184458

support.

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

llvm-svn: 178744

backend output; there's no need to report a fatal error.  This reverts r178042.
Part of rdar://13295753 and rdar://13401547

llvm-svn: 178102

machine and one is required.
Part of rdar://13295753

llvm-svn: 178042

emit function names in .gcda files by default, and the flag turns that off!
Rename the flag to make it match what it actually does. This keeps the default
format compatible with gcc 4.2.

Also add a test for this flag.

llvm-svn: 177475

is enabled. Also add a new -test-coverage cc1 flag which makes testing coverage
possible and add our first clang-side coverage test.

llvm-svn: 177470

llvm-svn: 177004

llvm-svn: 176619

llvm-svn: 176174

MSan instrumentation is driven by the original code. We take every
incoming instruction and emit another instruction (or ten) next to
it, operating on the shadow values (but sometimes on the real values,
too). Two programs in one, essentially. There can be any kinds of
redundancies in the second one, so we just run whatever is normally
run at -O2, and then exclude some passes that do not help much with
benchmarks.

llvm-svn: 174049

Since ObjCARC has been refactored into its own library with its own declaration header, we need to include the declaration header alongside Scalar.h in BackendUtil.

llvm-svn: 173648

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

llvm-svn: 172808

rather than doing it ourselves. This reflects the API changes in r171681.

llvm-svn: 171683

passes to a create-pass function instead of a direct constructor call.

llvm-svn: 171622

reflect the migration in r171366.

Re-sort the #include lines to reflect the new paths.

llvm-svn: 171369

Removes a duplicate #include as well as cleaning up some sort order
regressions since I last ran the script over Clang.

llvm-svn: 171364

llvm-svn: 171184

llvm-svn: 171020

llvm/Target/TargetMachine.h will not provide "llvm/TargetTransformInfo.h" any more.

llvm-svn: 169816

This prevents the functions generated by that pass from using the red zone.
<rdar://problem/12843084>

llvm-svn: 169755

uncovered.

This required manually correcting all of the incorrect main-module
headers I could find, and running the new llvm/utils/sort_includes.py
script over the files.

I also manually added quite a few missing headers that were uncovered by
shuffling the order or moving headers up to be main-module-headers.

llvm-svn: 169237

Add Clang flags -fsanitize-blacklist and -fno-sanitize-blacklist. Make this flag usable for ASan. Blacklisting can be used to disable sanitizer checks for particular file/function/object.

llvm-svn: 169144

llvm-svn: 169124