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Author SHA1 Message Date
Chandler Carruth
f3546bc541 Revert r199628: "[AArch64 NEON] Fix a bug caused by undef lane when generating VEXT." 
This test fails the newly added regression tests.

llvm-svn: 199631
 2014-01-20 08:18:01 +00:00
Chandler Carruth
7a87ddaeac Fix a DenseMap iterator invalidation bug causing lots of crashes when 
type units were enabled. The crux of the issue is that the
addDwarfTypeUnitType routine can end up being indirectly recursive. In
this case, the reference into the dense map (TU) became invalid by the
time we popped all the way back and used it to add the DIE type
signature.

Instead, use early return in the case where we can bypass the recursive
step and creating a type unit. Then use the pointer to the new type unit
to set up the DIE type signature in the case where we have to.

I tried really hard to reduce a testcase for this, but it's really
annoying. You have to get this to be mid-recursion when the densemap
grows. Even if we got a test case for this today, it'd be very unlikely
to continue exercising this pattern.

llvm-svn: 199630
 2014-01-20 08:07:07 +00:00
Owen Anderson
e0205fdcd8 Fix all the remaining lost-fast-math-flags bugs I've been able to find. The most important of these are cases in the generic logic for combining BinaryOperators. 
This logic hadn't been updated to handle FastMathFlags, and it took me a while to detect it because it doesn't show up in a simple search for CreateFAdd.

llvm-svn: 199629
 2014-01-20 07:44:53 +00:00
Kevin Qin
a2c8e30bce [AArch64 NEON] Fix a bug caused by undef lane when generating VEXT. 
llvm-svn: 199628
 2014-01-20 07:32:26 +00:00
Saleem Abdulrasool
fbccb78b9f MC: whitespace 
Remove hard tabs in favour of spaces.  NFC.

llvm-svn: 199624
 2014-01-20 04:10:11 +00:00
Chandler Carruth
b776308386 [PM] Fix a contradiction in the comments noticed by Anders. 
Have I mentioned that functions returning true on error and false on
success are confusing? They're more confusing when their name is
"verify". Anyways...

llvm-svn: 199622
 2014-01-20 02:32:02 +00:00
Kevin Qin
a1ebedbe48 [AArch64 NEON] Accept both #0.0 and #0 for comparing with floating point zero in asm parser. 
For FCMEQ, FCMGE, FCMGT, FCMLE and FCMLT, floating point zero will be
printed as #0.0 instead of #0. To support the history codes using #0,
we consider to let asm parser accept both #0.0 and #0.

llvm-svn: 199621
 2014-01-20 02:14:05 +00:00
Chandler Carruth
ce67c2b578 Add some wording to the coding standards to say how to indent namespaces 
(and to mention namespace ending comments). This is based on a quick
discussion on the developer mailing list where there was essentially no
objections to a simple and consistent rule. This should avoid future
debates about whether or not a namespace is "big enough" to indent. It
also matches clang-format's current behavior with LLVM source code which
hasn't really seen any opposition in code reviews that I spot checked.

llvm-svn: 199620
 2014-01-20 01:40:43 +00:00
Michael Gottesman
57d1567431 Move the retrieval of VT after all of the early exits from PerformOrCombine that do not use VT. NFC. 
llvm-svn: 199612
 2014-01-19 21:06:00 +00:00
Michael Gottesman
181ec670ce [APInt] Fix nearestLogBase2 to return correct answers for very large APInt and APInt with a bitwidth of 1. 
I also improved the comments, added some more tests, etc.

llvm-svn: 199610
 2014-01-19 20:33:48 +00:00
Michael Gottesman
7a8ef6d280 [APInt] Fixed bug where APInt(UINT32_MAX, 0) would blow up when being constructed. 
This was due to arithmetic overflow in the getNumBits() computation. Now we
cast BitWidth to a uint64_t so that does not occur during the computation. After
the computation is complete, the uint64_t is truncated when the function
returns.

I know that this is not something that is likely to happen, but it *IS* a valid
input and we should not blow up.

llvm-svn: 199609
 2014-01-19 20:33:38 +00:00
Benjamin Kramer
813eb189fa InstCombine: Modernize a bunch of cast combines. 
Also make them vector-aware.

llvm-svn: 199608
 2014-01-19 20:05:13 +00:00
Benjamin Kramer
319cbf6707 InstCombine: Hoist 3 copies of AddOne/SubOne into a header. 
llvm-svn: 199605
 2014-01-19 16:56:10 +00:00
Benjamin Kramer
47d4c4c113 InstCombine: Replace a hand-rolled version of isKnownToBeAPowerOfTwo with the real thing. 
llvm-svn: 199604
 2014-01-19 16:48:41 +00:00
Benjamin Kramer
0de38fdc6a InstCombine: Teach most integer add/sub/mul/div combines how to deal with vectors. 
llvm-svn: 199602
 2014-01-19 15:24:22 +00:00
Benjamin Kramer
b864b5d907 InstCombine: Refactor fmul/fdiv combines to handle vectors. 
llvm-svn: 199598
 2014-01-19 13:36:27 +00:00
NAKAMURA Takumi
9bbe4b2609 [CMake] Introduce new scheme of LLVM_TOOLS_BINARY_DIR and LLVM_LIBRARY_DIR 
In LLVM build tree, they points corresponding INTDIR.

  In Clang standalone tree, they points external dir (llvm-config's --bindir and --libdir).

llvm-svn: 199595
 2014-01-19 12:52:10 +00:00
NAKAMURA Takumi
400fd33a2a [CMake] Add comments in llvm/CMakeLists.txt. 
llvm-svn: 199594
 2014-01-19 12:47:26 +00:00
NAKAMURA Takumi
b833bdff22 [CMake] Deprecate LLVM_TOOLS_BINARY_DIR. 
llvm-svn: 199593
 2014-01-19 12:47:22 +00:00
NAKAMURA Takumi
45c99b48b7 [CMake] Prune deprecate usage of CMAKE_RUNTIME_OUTPUT_DIRECTORY. 
llvm-svn: 199592
 2014-01-19 12:47:18 +00:00
Chandler Carruth
8b7504e0a3 Fix a really nasty SROA bug with how we handled out-of-bounds memcpy 
intrinsics.

Reported on the list by Evan with a couple of attempts to fix, but it
took a while to dig down to the root cause. There are two overlapping
bugs here, both centering around the circumstance of discovering
a memcpy operand which is known to be completely outside the bounds of
the alloca.

First, we need to kill the *other* side of the memcpy if it was added to
this alloca. Otherwise we'll factor it into our slicing and try to
rewrite it even though we know for a fact that it is dead. This is made
more tricky because we can visit the sides in either order. So we have
to both kill the other side and skip instructions marked as dead. The
latter really should be goodness in every case, but here is a matter of
correctness.

Second, we need to actually remove the *uses* of the alloca by the
memcpy when queuing it for later deletion. Otherwise it may still be
using the alloca when we go to promote it (if the rewrite re-uses the
existing alloca instruction). Do this by factoring out the
use-clobbering used when for nixing a Phi argument and re-using it
across the operands of a to-be-deleted instruction.

llvm-svn: 199590
 2014-01-19 12:16:54 +00:00
Saleem Abdulrasool
b7bd80577f ARM ELF: ensure that the tag types are corrected 
Ensure that the tag types are reflected on a replacement.  This is particularly
important for the compatibility tag which has multiple representations where the
last definition wins.

llvm-svn: 199577
 2014-01-19 08:25:41 +00:00
Saleem Abdulrasool
c5281b558c ARM: update build attributes for ABI r2.09 
Update names for the names as per the current ABI errata.  Mark deprecated tags
as such.

llvm-svn: 199576
 2014-01-19 08:25:35 +00:00
Saleem Abdulrasool
1abb7d4c94 Move ARM build attributes into Support 
This moves the ARM build attributes definitions and support routines into the
Support library.  The support routines simply permit the conversion of the value
to and from a string representation.

The movement is prompted in order to permit access to the constants and string
representations from readobj in order to facilitate decoding of the attributes
section.

llvm-svn: 199575
 2014-01-19 08:25:27 +00:00
Saleem Abdulrasool
9188ad5f6f ARM IAS: remove unnecessary special case 
Tag_nodefaults is even and greater than 32 and thus does not need the special
check to fall into the correct category.

llvm-svn: 199574
 2014-01-19 08:25:19 +00:00
Arnold Schwaighofer
2c67b7dc58 LoopVectorizer: A reduction that has multiple uses of the reduction value is not 
a reduction.

Really. Under certain circumstances (the use list of an instruction has to be
set up right - hence the extra pass in the test case) we would not recognize
when a value in a potential reduction cycle was used multiple times by the
reduction cycle.

Fixes PR18526.
radar://15851149

llvm-svn: 199570
 2014-01-19 03:18:31 +00:00
Chandler Carruth
608f08d699 [PM] Make the verifier work independently of any pass manager. 
This makes the 'verifyFunction' and 'verifyModule' functions totally
independent operations on the LLVM IR. It also cleans up their API a bit
by lifting the abort behavior into their clients and just using an
optional raw_ostream parameter to control printing.

The implementation of the verifier is now just an InstVisitor with no
multiple inheritance. It also is significantly more const-correct, and
hides the const violations internally. The two layers that force us to
break const correctness are building a DomTree and dispatching through
the InstVisitor.

A new VerifierPass is used to implement the legacy pass manager
interface in terms of the other pieces.

The error messages produced may be slightly different now, and we may
have slightly different short circuiting behavior with different usage
models of the verifier, but generally everything works equivalently and
this unblocks wiring the verifier up to the new pass manager.

llvm-svn: 199569
 2014-01-19 02:22:18 +00:00
Chandler Carruth
8bc1905283 Add a const lookup routine to get a BlockAddress constant if there is 
one, but not create one. This is useful in the verifier when we want to
query the constant if it exists but not create one. To be used in an
upcoming commit.

llvm-svn: 199568
 2014-01-19 02:13:50 +00:00
Eli Bendersky
3062cd8540 Support AddrSpaceCast in ConstantExpr::getAsInstruction. 
It's handled similarly to the other casts. CastInst::Create already knows how
to handle it.

llvm-svn: 199565
 2014-01-18 22:54:33 +00:00
Nick Lewycky
f31f7a5863 Don't refuse to transform constexpr(call(arg, ...)) to call(constexpr(arg), ...)) just because the function has multiple return values even if their return types are the same. Patch by Eduard Burtescu! 
llvm-svn: 199564
 2014-01-18 22:47:12 +00:00
Benjamin Kramer
1f0b6cda68 ARM: Let the assembler reject v5 instructions in v4 mode. 
PR18524.

llvm-svn: 199559
 2014-01-18 19:03:19 +00:00
NAKAMURA Takumi
718dd2ef23 [CMake] Add llvm-tblgen to dependencies of check-llvm. 
llvm-tblgen is not built when external LLVM_TABLEGEN is specified.
Even then, llvm-tblgen should be built for testing tblgen itself.

llvm-svn: 199558
 2014-01-18 19:01:08 +00:00
Benjamin Kramer
ace2801d74 InstCombine: Make the (fmul X, -1.0) -> (fsub -0.0, X) transform handle vectors too. 
PR18532.

llvm-svn: 199553
 2014-01-18 16:43:14 +00:00
Benjamin Kramer
2621133447 Upgrade ConstantFP's negative zero and infinity getters to handle vector types. 
Will be used soon.

llvm-svn: 199552
 2014-01-18 16:43:06 +00:00
Adrian Prantl
affe30d1e4 typo 
llvm-svn: 199537
 2014-01-18 02:12:10 +00:00
Adrian Prantl
b65add1299 Debug info (LTO): Move the creation of accessibility flags to 
getOrCreateSubprogramDIE to avoid attributes being added twice when DIEs
are merged.

rdar://problem/15842330.

llvm-svn: 199536
 2014-01-18 02:12:00 +00:00
Owen Anderson
8750294bae Fix more instances of dropped fast math flags when optimizing FADD instructions. All found by inspection (aka grep). 
llvm-svn: 199528
 2014-01-18 00:48:14 +00:00
Reid Kleckner
395f9ebf2a Add an inalloca flag to allocas 
Summary:
The only current use of this flag is to mark the alloca as dynamic, even
if its in the entry block.  The stack adjustment for the alloca can
never be folded into the prologue because the call may clear it and it
has to be allocated at the top of the stack.

Reviewers: majnemer

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D2571

llvm-svn: 199525
 2014-01-17 23:58:17 +00:00
Justin Bogner
01a7cbc7b6 MC: Add some missing include guards 
Patch by Daniel Reynaud!

llvm-svn: 199523
 2014-01-17 22:39:45 +00:00
Juergen Ributzka
587c78b685 Update LangRef to emphasize the difference between "coldcc" and "preserve_mostcc". 
llvm-svn: 199521
 2014-01-17 22:24:35 +00:00
Rui Ueyama
d9329dbc38 80-column. 
llvm-svn: 199519
 2014-01-17 22:11:27 +00:00
Rui Ueyama
035830cabc llvm-objdump/COFF: Print ordinal base number. 
llvm-svn: 199518
 2014-01-17 22:02:24 +00:00
Juergen Ributzka
4f480d4b83 Add two new calling conventions for runtime calls 
This patch adds two new target-independent calling conventions for runtime
calls - PreserveMost and PreserveAll.
The target-specific implementation for X86-64 is defined as following:
  - Arguments are passed as for the default C calling convention
  - The same applies for the return value(s)
  - PreserveMost preserves all GPRs - except R11
  - PreserveAll preserves all GPRs and all XMMs/YMMs - except R11

Reviewed by Lang and Philip

llvm-svn: 199508
 2014-01-17 19:47:03 +00:00
Daniel Sanders
32197355d2 [mips][msa] Correct pattern for LSA 
Summary:
$rs and $rt were the wrong way round in the .td and the testcase wasn't
strict enough to detect the mistake.

Reviewers: matheusalmeida

Reviewed By: matheusalmeida

Differential Revision: http://llvm-reviews.chandlerc.com/D2554

llvm-svn: 199498
 2014-01-17 15:40:05 +00:00
Daniel Sanders
4151a46177 [mips] Split IIIdiv int II_DIV, II_DIVU, II_DDIV, and II_DDIVU 
No functional change since the InstrItinData's were duplicated

llvm-svn: 199497
 2014-01-17 14:48:06 +00:00
Daniel Sanders
f4058c0299 [mips][sched] Split IIImul and IIImult into subclasses. 
IIImul -> II_MUL
IIImult -> II_MULT, II_MULTU, II_MADD, II_MADDU, II_MSUB, II_MSUBU, II_DMULT, II_DMULTU

No functional change since the InstrItinData's have been duplicated.

llvm-svn: 199495
 2014-01-17 14:32:41 +00:00
Daniel Sanders
458f47324c [mips][sched] Split IIHiLo into II_MFHI_MFLO and II_MTHI_MTLO 
No functional change since the InstrItinData's have been duplicated.

llvm-svn: 199493
 2014-01-17 14:17:34 +00:00
Renato Golin
035f4db32b Add MLA alias for ARMv4 support. 
Fix MLA defs to use register class GPRnopc.
Add encoding tests for multiply instructions.
(Alias for MUL/SMLAL/UMLAL added by r199026.)

Patch by Zhaoshi.

llvm-svn: 199491
 2014-01-17 13:53:08 +00:00
Chandler Carruth
78e3ac2ca5 [PM] [cleanup] Rename some of the Verifier's members, re-arrange them, 
and tweak comments prior to more invasive surgery. Also clean up some
other non-doxygen comments, and run clang-format over the parts that are
going to change dramatically in subsequent commits so that those don't
get cluttered with formatting changes.

No functionality changed.

llvm-svn: 199489
 2014-01-17 11:09:34 +00:00
Kostya Serebryany
88b5111b60 [asan] extend asan-coverage (still experimental). 
- add a mode for collecting per-block coverage (-asan-coverage=2).
   So far the implementation is naive (all blocks are instrumented),
   the performance overhead on top of asan could be as high as 30%.
 - Make sure the one-time calls to __sanitizer_cov are moved to function buttom,
   which in turn required to copy the original debug info into the call insn.

Here is the performance data on SPEC 2006
(train data, comparing asan with asan-coverage={0,1,2}):

                             asan+cov0     asan+cov1      diff 0-1    asan+cov2       diff 0-2      diff 1-2
       400.perlbench,        65.60,        65.80,         1.00,        76.20,         1.16,         1.16
           401.bzip2,        65.10,        65.50,         1.01,        75.90,         1.17,         1.16
             403.gcc,         1.64,         1.69,         1.03,         2.04,         1.24,         1.21
             429.mcf,        21.90,        22.60,         1.03,        23.20,         1.06,         1.03
           445.gobmk,       166.00,       169.00,         1.02,       205.00,         1.23,         1.21
           456.hmmer,        88.30,        87.90,         1.00,        91.00,         1.03,         1.04
           458.sjeng,       210.00,       222.00,         1.06,       258.00,         1.23,         1.16
      462.libquantum,         1.73,         1.75,         1.01,         2.11,         1.22,         1.21
         464.h264ref,       147.00,       152.00,         1.03,       160.00,         1.09,         1.05
         471.omnetpp,       115.00,       116.00,         1.01,       140.00,         1.22,         1.21
           473.astar,       133.00,       131.00,         0.98,       142.00,         1.07,         1.08
       483.xalancbmk,       118.00,       120.00,         1.02,       154.00,         1.31,         1.28
            433.milc,        19.80,        20.00,         1.01,        20.10,         1.02,         1.01
            444.namd,        16.20,        16.20,         1.00,        17.60,         1.09,         1.09
          447.dealII,        41.80,        42.20,         1.01,        43.50,         1.04,         1.03
          450.soplex,         7.51,         7.82,         1.04,         8.25,         1.10,         1.05
          453.povray,        14.00,        14.40,         1.03,        15.80,         1.13,         1.10
             470.lbm,        33.30,        34.10,         1.02,        34.10,         1.02,         1.00
         482.sphinx3,        12.40,        12.30,         0.99,        13.00,         1.05,         1.06

llvm-svn: 199488
 2014-01-17 11:00:30 +00:00