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Author SHA1 Message Date
Chandler Carruth
e1a5243053 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199590 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-19 12:16:54 +00:00
Saleem Abdulrasool
d0fb7e49cc 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199577 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-19 08:25:41 +00:00
Saleem Abdulrasool
70c092f3ec ARM: update build attributes for ABI r2.09 
Update names for the names as per the current ABI errata.  Mark deprecated tags
as such.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199576 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-19 08:25:35 +00:00
Saleem Abdulrasool
467aa258ae 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199575 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-19 08:25:27 +00:00
Saleem Abdulrasool
bf329b3414 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199574 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-19 08:25:19 +00:00
Arnold Schwaighofer
2becaaf3a1 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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199570 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-19 03:18:31 +00:00
Chandler Carruth
e608d695de [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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199569 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-19 02:22:18 +00:00
Chandler Carruth
60e425e99b 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199568 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-19 02:13:50 +00:00
Eli Bendersky
e952af7ae5 Support AddrSpaceCast in ConstantExpr::getAsInstruction. 
It's handled similarly to the other casts. CastInst::Create already knows how
to handle it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199565 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-18 22:54:33 +00:00
Nick Lewycky
6d2bd95ff1 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! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199564 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-18 22:47:12 +00:00
Benjamin Kramer
c975958498 ARM: Let the assembler reject v5 instructions in v4 mode. 
PR18524.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199559 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-18 19:03:19 +00:00
NAKAMURA Takumi
ee760949ab [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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199558 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-18 19:01:08 +00:00
Benjamin Kramer
8e937c39bb InstCombine: Make the (fmul X, -1.0) -> (fsub -0.0, X) transform handle vectors too. 
PR18532.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199553 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-18 16:43:14 +00:00
Benjamin Kramer
bedf842b78 Upgrade ConstantFP's negative zero and infinity getters to handle vector types. 
Will be used soon.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199552 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-18 16:43:06 +00:00
Adrian Prantl
4bd80f02d6 typo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199537 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-18 02:12:10 +00:00
Adrian Prantl
f9af5bdd63 Debug info (LTO): Move the creation of accessibility flags to 
getOrCreateSubprogramDIE to avoid attributes being added twice when DIEs
are merged.

rdar://problem/15842330.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199536 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-18 02:12:00 +00:00
Owen Anderson
774cec5748 Fix more instances of dropped fast math flags when optimizing FADD instructions. All found by inspection (aka grep). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199528 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-18 00:48:14 +00:00
Reid Kleckner
3cbfa1617f 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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199525 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 23:58:17 +00:00
Justin Bogner
01d9f5972a MC: Add some missing include guards 
Patch by Daniel Reynaud!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199523 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 22:39:45 +00:00
Juergen Ributzka
dbee8c1a3f Update LangRef to emphasize the difference between "coldcc" and "preserve_mostcc". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199521 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 22:24:35 +00:00
Rui Ueyama
64382602e4 80-column. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199519 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 22:11:27 +00:00
Rui Ueyama
9106d365f5 llvm-objdump/COFF: Print ordinal base number. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199518 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 22:02:24 +00:00
Juergen Ributzka
ceaf829339 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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199508 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 19:47:03 +00:00
Daniel Sanders
41e1c04201 [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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199498 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 15:40:05 +00:00
Daniel Sanders
61a2eb1df5 [mips] Split IIIdiv int II_DIV, II_DIVU, II_DDIV, and II_DDIVU 
No functional change since the InstrItinData's were duplicated



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199497 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 14:48:06 +00:00
Daniel Sanders
235a81cbbf [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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199495 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 14:32:41 +00:00
Daniel Sanders
8821f3c6b2 [mips][sched] Split IIHiLo into II_MFHI_MFLO and II_MTHI_MTLO 
No functional change since the InstrItinData's have been duplicated.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199493 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 14:17:34 +00:00
Renato Golin
3e2346341c 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199491 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 13:53:08 +00:00
Chandler Carruth
825488c539 [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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199489 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 11:09:34 +00:00
Kostya Serebryany
bd2c711cdd [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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199488 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 11:00:30 +00:00
Chandler Carruth
0c25726596 [PM] Remove the preverifier and directly compute the DominatorTree for 
the verifier after ensuring the CFG is at least usefully formed.

This fixes a number of problems:
1) The PreVerifier was missing the controls the Verifier provides over
   *how* an invalid module is handled -- it just aborted the program!
   Now it uses the same logic as the Verifier which is significantly
   more library-friendly.
2) The DominatorTree used previously could have been cached and not
   updated due to bugs in prior passes and we would silently use the
   stale tree. This could cause dominance errors to not be as quickly
   diagnosed.
3) We can now (in the next patch) pull the functionality of the verifier
   apart from the pass infrastructure so that you can verify IR without
   having any form of pass manager. This in turn frees the code to share
   logic between old and new pass manager variants.

Along the way I fixed at least one annoying bug -- the state for
'Broken' wasn't being cleared from run to run causing all functions
visited after the first broken function to be marked as broken
regardless of whether *they* were a problem. Fortunately, I don't really
know much of a way to observe this peculiarity.

In case folks are worried about the runtime cost, its negligible.
I looked at running the entire regression test suite (which should be
a relatively good use of the verifier) before and after but was unable
to even measure the time spent on the verifier and there was no
regresion from before to after. I checked both with debug builds and
optimized builds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199487 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 10:56:02 +00:00
Kevin Qin
b9536ac581 [AArch64 NEON] Expand vector for UDIV/SDIV/UREM/SREM/FREM as neon doesn't support these operations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199485 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 09:54:30 +00:00
Chandler Carruth
b2671254bd Add the test for libstdc++ versions newer than 4.6 so we don't 
accidentally pick that up while using Clang and run into subtle bugs
down the road related to C++11 features not fully implemented in that
version of the standard library.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199484 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 09:47:55 +00:00
Craig Topper
3039306b76 Switch a few instructions to use RI instead I so they don't require REX_W to be explicitly specified. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199479 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 08:16:57 +00:00
Craig Topper
5f69be67b5 Add OpSize16 flags to 32-bit CRC32 instructions so they can be encoded correctly in 16-bit mode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199478 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 08:01:20 +00:00
Craig Topper
50a2b1672d Teach x86 asm parser to handle 'opaque ptr' in Intel syntax. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199477 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 07:44:10 +00:00
Craig Topper
9d0b786f72 Teach X86 asm parser to understand 'ZMMWORD PTR' in Intel syntax. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199476 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 07:37:39 +00:00
Craig Topper
5d59bb44ee Fix intel syntax for 64-bit version of FXSAVE/FXRSTOR to use '64' suffix instead of 'q' 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199474 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 07:25:39 +00:00
Craig Topper
4b42f26ab5 VEX_PREFIX_66 doesn't need to set the hasOpSize flag since VEX instructions don't use the size fields it controls. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199470 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 07:11:45 +00:00
Craig Topper
ad6662f202 Replace duplicated code with a existing helper function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199468 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 06:42:38 +00:00
Hao Liu
84887ceca3 [AArch64]Fix the problem can't select f16_to_f32 and f32_to_f16. 
Also add copy support for FPR16.
Also add a missing test case file belongs to commit r197361.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199463 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 06:23:30 +00:00
Kevin Qin
16511208f2 [AArch64 NEON] Custom lower conversion between vector integer and vector floating point if element bit-width doesn't match. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199462 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 05:52:35 +00:00
Hao Liu
555f57f67b [AArch64]Fix the problem can't select concat_vectors of two v1i32 types. 
Also fix the problem can't select scalar_to_vector from f32 to v2f32/v4f32.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199461 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 05:44:46 +00:00
Bob Wilson
008425f5da Fix bad variable syntax in r199413 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199447 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-17 00:40:39 +00:00
Rafael Espindola
e82dec5c0f Use LLVM_EXPLICIT instead of a function pointer as bool. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199437 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-16 23:37:23 +00:00
Reid Kleckner
ad60d3c304 Change inalloca rules to make it only apply to the last parameter 
This makes things a lot easier, because we can now talk about the
"argument allocation", which allocates all the memory for the call in
one shot.

The only functional change is to the verifier for a feature that hasn't
shipped yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199434 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-16 22:59:24 +00:00
Quentin Colombet
9b24eeee01 [opt][PassInfo] Allow opt to run passes that need target machine. 
When registering a pass, a pass can now specify a second construct that takes as
argument a pointer to TargetMachine.
The PassInfo class has been updated to reflect that possibility.
If such a constructor exists opt will use it instead of the default constructor
when instantiating the pass.

Since such IR passes are supposed to be rare, no specific support has been
added to this commit to allow an easy registration of such a pass.
In other words, for such pass, the initialization function has to be
hand-written (see CodeGenPrepare for instance).

Now, codegenprepare can be tested using opt:
opt -codegenprepare -mtriple=mytriple input.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199430 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-16 21:44:34 +00:00
Duncan P. N. Exon Smith
7c41150e85 LTO: document LTO_API_VERSION for each API 
Adding a doxygen comment for each bit of API to indicate at which
LTO_API_VERSION each was available, manually gleaned from successive
git-blames.  A few notes:

- LTO_API_VERSION was set to 3 at its introduction.
- I've indicated all the API introduced before LTO_API_VERSION was
  around as available "prior to LTO_API_VERSION=3".
- A number of API changes neglected to bump LTO_API_VERSION.  These I've
  indicated as available at the *next* bump of LTO_API_VERSION.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199429 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-16 21:37:17 +00:00
Owen Anderson
5ee5e0c430 Fix two cases where we could lose fast math flags when optimizing FADD expressions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199427 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-16 21:26:02 +00:00
Owen Anderson
5d9450f92f Fix an instance where we would drop fast math flags when performing an fdiv to reciprocal multiply transformation. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199425 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-16 21:07:52 +00:00