Commit Graph

131856 Commits

Author SHA1 Message Date
Craig Topper d0d4b11f66 Re-factor intrinsic lowering to combine common parts of similar intrinsics. Reduces compiled code size a little bit.
llvm-svn: 161859
2012-08-14 07:43:25 +00:00
Chandler Carruth ebbc0c93c9 Emphasize that clang-fixit is planned but not yet contributed. I should
really just push the initial version....

llvm-svn: 161858
2012-08-14 07:36:05 +00:00
Craig Topper 2a40418a99 Change greater than to greater than or equal so that an identical sized store to the same offset is treated as completing overwriting.
llvm-svn: 161857
2012-08-14 07:32:05 +00:00
Chandler Carruth b8f67ad768 Fix some of my terrible spelling.
llvm-svn: 161856
2012-08-14 07:21:00 +00:00
Chandler Carruth 72af8c3c6f Add initial documentation about the new tools repository and the
structure of how we're building concrete tools as well as tooling
infrastructure as part of the Clang project.

This documentation is definitely still rough. If anyone can improve it,
flesh it out, or help structure it in a more natural way, please, help!
=] This is not my forte, and patches here are more than welcome!

llvm-svn: 161855
2012-08-14 07:19:09 +00:00
Anna Zaks 13883d9e4c [analyzer] Fixup to r161821
llvm-svn: 161854
2012-08-14 05:31:46 +00:00
Richard Smith 0ff8f0eaf9 Fix undefined behavior: binding null pointer to reference. No functionality change.
llvm-svn: 161853
2012-08-14 05:31:26 +00:00
Nadav Rotem 70409991bc During the CodeGenPrepare we often lower intrinsics (such as objsize)
and allow some optimizations to turn conditional branches into unconditional.
This commit adds a simple control-flow optimization which merges two consecutive
basic blocks which are connected by a single edge. This allows the codegen to
operate on larger basic blocks.

rdar://11973998

llvm-svn: 161852
2012-08-14 05:19:07 +00:00
Eric Christopher 160522c25a Grammar.
llvm-svn: 161851
2012-08-14 05:13:29 +00:00
Richard Smith f995f2ce7c Fix undefined behavior: don't bind a dereferenced null pointer to a reference.
No functionality change.

llvm-svn: 161832
2012-08-14 04:19:29 +00:00
Richard Smith f44b8ee52e Placate the mingw32 buildbot by suffixing 64-bit constants with ULL.
llvm-svn: 161831
2012-08-14 03:55:16 +00:00
Richard Smith 697cc9e60c Fix undefined behavior in code completion, caught by
-fcatch-undefined-behavior. Don't try to fit 34 different flags
into 32 bits. Also, don't use 32-bit signed left shifts for this.

llvm-svn: 161830
2012-08-14 03:13:00 +00:00
Richard Smith 915be26a85 Avoid undefined behavior in DenseMap::shrink_and_clear(). Log2_32_Ceil(0)
returns 32. This change mirrors the corresponding code in
SmallDenseMap::shrink_and_clear().

llvm-svn: 161829
2012-08-14 02:56:51 +00:00
Eli Friedman 1d4c3cfb88 Make __is_convertible_to handle abstract types correctly. PR13591.
llvm-svn: 161828
2012-08-14 02:06:07 +00:00
Richard Smith 7d6d47b862 Fix undefined behavior (and wrong code, as far as I can tell) in NEON builtin
tablegen code, found by -fcatch-undefined-behavior. I would appreciate if
someone more familiar with the NEON code could point me in the direction of how
to write a test for this. We appear to have essentially no test coverage
whatsoever for these builtins.

llvm-svn: 161827
2012-08-14 01:28:02 +00:00
Eric Christopher 97f6ea9f34 Typo.
llvm-svn: 161826
2012-08-14 01:09:10 +00:00
NAKAMURA Takumi 245920463d llvm/test/CodeGen/ARM/floorf.ll: Add explicit -mtriple=arm-unknown-unknown, or it fails on msvc.
llvm-svn: 161825
2012-08-14 00:56:06 +00:00
Chandler Carruth 18d674522d Clean up the basic instructions for getting started with clang to always
return to the same directory.

llvm-svn: 161823
2012-08-14 00:41:30 +00:00
Anna Zaks 23665a1bcf [analyzer] Teach live variable analyzes that super uses self pointer.
llvm-svn: 161822
2012-08-14 00:36:20 +00:00
Anna Zaks aa4acdfdee [analyzer] Disable autorelease pool tracking.
The autorelease pool has not been implemented completely: we were adding
the autoreleased symbols to the state, but never looking at them. Until
we have a complete implementation, remove the overhead and comment out
the unused code.

llvm-svn: 161821
2012-08-14 00:36:17 +00:00
Anna Zaks f5788c7697 [analyzer] Refactor RetainReleaseChecker to go through a function call
to set/get/remove the RefBinding.

No functional change here. Having these setter and getter methods will
make it much easier when replacing the underlining representation of
RefBindings (I just went through the exercise). It makes the code more
readable as well.

llvm-svn: 161820
2012-08-14 00:36:15 +00:00
Anna Zaks 773aa58270 [analyzer] Add getStackFrame() to CheckerContext and ExplodedNode.
llvm-svn: 161819
2012-08-14 00:36:12 +00:00
Jordan Rose e521f93225 [analyzer] Look up DynamicTypeInfo by region instead of symbol.
This allows us to store type info for non-symbolic regions.

No functionality change.

llvm-svn: 161811
2012-08-13 23:59:07 +00:00
Jordan Rose ce6c99a559 [analyzer] Reduce code duplication: make CXXDestructorCall a CXXInstanceCall.
While there is now some duplication between SimpleCall and the CXXInstanceCall
sub-hierarchy, this is much better than copy-and-pasting the devirtualization
logic shared by both instance methods and destructors.

An unfortunate side effect is that there is no longer a single CallEvent type
that corresponds to "calls written as CallExprs". For the most part this is a
good thing, but the checker callback eval::Call still takes a CallExpr rather
than a CallEvent (since we're not sure if we want to allow checkers to
evaluate other kinds of calls). A mistake here will be caught by a cast<> in
CheckerManager::runCheckersForEvalCall.

No functionality change.

llvm-svn: 161809
2012-08-13 23:46:05 +00:00
Jordan Rose 710f6b1259 [analyzer] Be more careful when downcasting for devirtualization.
Virtual base regions are never layered, so simply stripping them off won't
necessarily get you to the correct casted class. Instead, what we want is
the same logic for evaluating dynamic_cast: strip off base regions if possible,
but add new base regions if necessary.

llvm-svn: 161808
2012-08-13 23:46:01 +00:00
Owen Anderson a40319b7f1 Add a roundToIntegral method to APFloat, which can be parameterized over various rounding modes. Use this to implement SelectionDAG constant folding of FFLOOR, FCEIL, and FTRUNC.
llvm-svn: 161807
2012-08-13 23:32:49 +00:00
Johnny Chen 88fc73b8f7 Simplify the "Watchpoint ... hit" printout, make it more terse.
Change the test case, too. 

llvm-svn: 161806
2012-08-13 23:27:50 +00:00
Jakob Stoklund Olesen 396b595b92 Transfer weights in transferSuccessorsAndUpdatePHIs().
llvm-svn: 161805
2012-08-13 23:13:25 +00:00
Jakob Stoklund Olesen 1dc107a84e Print out MachineBasicBlock successor weights when available.
llvm-svn: 161804
2012-08-13 23:13:23 +00:00
Nadav Rotem 8d80452076 LICM uses AliasSet information to hoist and sink instructions. However, other passes, such as LoopRotate
may invalidate its AliasSet because SSAUpdater does not update the AliasSet properly.
This patch teaches SSAUpdater to notify AliasSet that it made changes.
The testcase in PR12901 is too big to be useful and I could not reduce it to a normal size. 

rdar://11872059 PR12901

llvm-svn: 161803
2012-08-13 23:06:54 +00:00
Nadav Rotem 5d4e205874 MemoryDependenceAnalysis attempts to find the first memory dependency for function calls.
Currently, if GetLocation reports that it did not find a valid pointer (this is the case for volatile load/stores),
we ignore the result. This patch adds code to handle the cases where we did not obtain a valid pointer.

rdar://11872864  PR12899

llvm-svn: 161802
2012-08-13 23:03:43 +00:00
Jim Grosbach b4e1ba7191 ARM: Move Thumb2 tests to Thumb2 test file and fix CHECK lines.
These tests weren't actually being run before (missing ':' after CHECK).

llvm-svn: 161800
2012-08-13 22:25:44 +00:00
Jordan Rose 574ef152fc [analyzer] Handle dynamic_casts that turn out to be upcasts.
This can occur with multiple inheritance, which jumps from one parent to
the other, and with virtual inheritance, since virtual base regions always
wrap the actual object and can't be nested within other base regions.

This also exposed some incorrect logic for multiple inheritance: even if B
is known not to derive from C, D might still derive from both of them.

llvm-svn: 161798
2012-08-13 22:11:42 +00:00
Jordan Rose 07a7ed80cb [analyzer] Don't strip CXXBaseObjectRegions when checking dynamic_casts.
...and /do/ strip CXXBaseObjectRegions when casting to a virtual base class.

This allows us to enforce the invariant that a CXXBaseObjectRegion can always
provide an offset for its base region if its base region has a known class
type, by only allowing virtual bases and direct non-virtual bases to form
CXXBaseObjectRegions.

This does mean some slight problems for our modeling of dynamic_cast, which
needs to be resolved by finding a path from the current region to the class
we're trying to cast to.

llvm-svn: 161797
2012-08-13 22:11:34 +00:00
Chad Rosier 7459543795 [ms-inline asm] Add a helpful assert.
llvm-svn: 161796
2012-08-13 22:04:09 +00:00
Jason Molenda 4d04d477d9 When emulating instructions that read from memory,
return 0x0 as the read value instead of uninitialized
stack data so we get consistent behavior from the
emulator.
<rdar://problem/12058770>

llvm-svn: 161795
2012-08-13 21:53:35 +00:00
Jakob Stoklund Olesen 702bcc3bcf Remove the TII::scheduleTwoAddrSource() hook.
It never does anything when running 'make check', and it get's in the
way of updating live intervals in 2-addr.

The hook was originally added to help form IT blocks in Thumb2 code
before register allocation, but the pass ordering has changed since
then, and we run if-conversion after register allocation now.

When the MI scheduler is enabled, there will be no less than two
schedulers between 2-addr and Thumb2ITBlockPass, so this hook is
unlikely to help anything.

llvm-svn: 161794
2012-08-13 21:52:57 +00:00
Chad Rosier 162b14f326 [ms-inline asm] Address a potential buffer overflow.
llvm-svn: 161793
2012-08-13 21:35:47 +00:00
Bill Wendling 72baa6eeae Rename test since it's not linux-specific.
llvm-svn: 161792
2012-08-13 21:32:42 +00:00
Richard Smith 47726b2f02 PR13570: When an unresolved overloaded call appeared in a dependent context, we
forgot to set it as being instantiation-dependent as well as being type- and
value-dependent.

llvm-svn: 161791
2012-08-13 21:29:18 +00:00
Manman Ren 6c30e137d0 ARM: enable struct byval for AAPCS-VFP.
rdar://9877866

llvm-svn: 161790
2012-08-13 21:23:55 +00:00
Manman Ren d6c8270eaa ARM: enable struct byval for AAPCS-VFP.
This change is to be enabled in clang.

rdar://9877866

llvm-svn: 161789
2012-08-13 21:22:50 +00:00
Bill Wendling 49aeb5cc5d Whitespace cleanup.
llvm-svn: 161788
2012-08-13 21:20:43 +00:00
Johnny Chen f97ecd70b2 Comment changes.
llvm-svn: 161787
2012-08-13 21:19:11 +00:00
Fariborz Jahanian 7513fa346c c: small refactoring of checking for __attribute__(const))
per Richard's comment.

llvm-svn: 161786
2012-08-13 21:15:02 +00:00
Johnny Chen 209bd65ea4 rdar://problem/12007576
Record the snapshot of our watched value when the watchpoint is set or hit.
And report the old/new values when watchpoint is triggered.  Add some test scenarios.

llvm-svn: 161785
2012-08-13 21:09:54 +00:00
Jakob Stoklund Olesen d0af1d9657 Count triangles and diamonds in early if-conversion.
llvm-svn: 161783
2012-08-13 21:03:27 +00:00
Jakob Stoklund Olesen 62a097d134 Delete dead typedef.
llvm-svn: 161782
2012-08-13 21:03:25 +00:00
Jakob Stoklund Olesen 83a927d84a Handle extra Tail predecessors in if-conversion.
It is still possible to if-convert if the tail block has extra
predecessors, but the tail phis must be rewritten instead of being
removed.

llvm-svn: 161781
2012-08-13 20:49:04 +00:00
Chad Rosier 65a8e0b69f [ms-inline asm] Have patchMSAsmStrings() return a vector or AsmStrings.
The AsmParser expects a single asm instruction, but valid ms-style inline asm
statements may contain  multiple instructions.

This happens with asm blocks

__asm {
  mov ebx, eax
  mov ecx, ebx
}

or when multiple asm statements are adjacent to one another

__asm mov ebx, eax
__asm mov ecx, ebx

and

__asm mov ebx, eax __asm mov ecx, ebx

Currently, asm blocks are not properly handled.

llvm-svn: 161780
2012-08-13 20:32:07 +00:00