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Commit Graph

26415 Commits

Author SHA1 Message Date
Chris Lattner
92af77f45c PR3281:crash00.ll: produce this diagnostic instead of crashing:
@t = global i8 0, align 3
                        ^

llvm-svn: 61675
2009-01-05 07:46:05 +00:00
Dan Gohman
6d6dd15fc3 Handle weak_extern in the JIT. This fixes
SingleSource/UnitTests/2007-04-25-weak.c in JIT mode. The test
now passes on systems which are able to produce a correct
reference output to compare with.

llvm-svn: 61674
2009-01-05 05:32:42 +00:00
Scott Michel
733d5f71a0 CellSPU:
- Teach SPU64InstrInfo.td about the remaining signed comparisons, update tests
  accordingly.

llvm-svn: 61672
2009-01-05 04:05:53 +00:00
Scott Michel
0d9d939406 CellSPU:
- Fix (brcond (setq ...)) bug, where BRNZ should have been used vice BRZ.
- Kill unused/unnecessary nodes in SPUNodes.td
- Beef out the i64operations.c test harness to use a lot of unaligned
  loads, test loops and LLVM loop/basic block optimizations; run the
  test harness successfully on real Cell hardware.

llvm-svn: 61664
2009-01-05 01:34:35 +00:00
Nick Lewycky
5616407df7 Move the libcall annotating part from doFinalization to doInitialization.
Finalization occurs after all the FunctionPasses in the group have run, which
is clearly not what we want.

This also means that we have to make sure that we apply the right param 
attributes when creating a new function.

Also, add a missed optimization: strdup and strndup. NoCapture and 
NoAlias return!

llvm-svn: 61658
2009-01-05 00:07:50 +00:00
Nick Lewycky
6ee6b1d3e2 Add a mechanism to specify attributes in getOrInsertFunction.
llvm-svn: 61645
2009-01-04 22:54:40 +00:00
Chris Lattner
a76e94a12e Refactor some parser interfaces to fix PR3278 and a FIXME:
ParseAssemblyString with a specified module would not parse
into the module, it would create and return a new one.

llvm-svn: 61635
2009-01-04 20:44:11 +00:00
Nick Lewycky
6685977938 Run a post-pass that marks known function declarations by name.
llvm-svn: 61632
2009-01-04 20:27:34 +00:00
Chris Lattner
30de396459 elf writer really wants the size of the global, not the size
of the pointer to the global.

llvm-svn: 61630
2009-01-04 20:19:20 +00:00
Bill Wendling
d57191595b Revert this transform. It was causing some dramatic slowdowns in a few tests. See PR3266.
llvm-svn: 61623
2009-01-04 06:19:11 +00:00
Bill Wendling
61bdc3d99e The llvm::ELFWriter::EmitGlobal() method is calling the
llvm::PATypeHolder::get() method when LLVM is self-hosted in Release
mode. Before the parser changed, there was a definition of llvm::PAHolder::get()
in llvmAsmParser.y. This was probably a bug that no-one noticed.

Explicitly #include the Type.h file as a temporary fix for now.

llvm-svn: 61620
2009-01-04 01:47:14 +00:00
Dan Gohman
2a079de3f5 Fix a DAGCombiner abort on an invalid shift count constant. This fixes PR3250.
llvm-svn: 61613
2009-01-03 19:22:06 +00:00
Dan Gohman
8dc1513b6c CommuteNodesToReducePressure() is now removed.
llvm-svn: 61612
2009-01-03 19:19:30 +00:00
Dan Gohman
6a518de5f5 Remove the code from the scheduler that commuted two-address
instructions to avoid copies, because TwoAddressInstructionPass
also does this optimization.  The scheduler's version didn't
account for live-out values, which resulted in spurious commutes
and missed opportunities.

Now, TwoAddressInstructionPass handles all the opportunities,
instead of just those that the scheduler missed. The result is
usually the same, though there are occasional trivial differences
resulting from the avoidance of spurious commutes.

llvm-svn: 61611
2009-01-03 18:01:46 +00:00
Nick Lewycky
dfbc53093a Any void readonly functions are provably dead, don't waste time adding
nocapture attributes to them.

llvm-svn: 61610
2009-01-03 17:05:32 +00:00
Evan Cheng
540a7a5e9b Add Intel processors core i7 and atom.
llvm-svn: 61603
2009-01-03 04:24:44 +00:00
Evan Cheng
c477e19c19 Fix PR3210: Detect more Intel processors. Patch by Torok Edwin.
llvm-svn: 61602
2009-01-03 04:04:46 +00:00
Nick Lewycky
5222f155a0 We know it's always a SCEVConstant if it gets here, so just cast it and
inline the only use of isNegative. Fixes warning reported by Mike Stump.

llvm-svn: 61600
2009-01-03 01:53:24 +00:00
Scott Michel
0309418000 CellSPU:
- Remove custom lowering for BRCOND
- Add remaining functionality for branches in SPUInstrInfo, such as branch
  condition reversal and load/store folding. Updated BrCond test to reflect
  branch reversal.

llvm-svn: 61597
2009-01-03 00:27:53 +00:00
Misha Brukman
45c8a4df20 Alphabetized #includes.
llvm-svn: 61595
2009-01-02 22:49:28 +00:00
Misha Brukman
8d90975ba9 Down with trailing whitespace!
llvm-svn: 61594
2009-01-02 22:46:48 +00:00
Scott Michel
57a5503c5a - Make copyRegToReg use the "LR" assembler synonym for "OR". Makes finding
register copies a little easier to pick out from the output.
- Fix bug 3192.

llvm-svn: 61591
2009-01-02 20:52:08 +00:00
Nick Lewycky
2c01a8db3d Don't try to analyze this "backward" case. This is overly conservative
pending a correct solution.

llvm-svn: 61589
2009-01-02 18:54:17 +00:00
Daniel Dunbar
eedbd9ee1b Remove comma at end of enumerator list.
llvm-svn: 61585
2009-01-02 16:32:55 +00:00
Daniel Dunbar
2c89c6ebae Remove bison specific Makefile bits for AsmParser.
llvm-svn: 61584
2009-01-02 16:29:09 +00:00
Duncan Sands
3fee49285c Load tracking means that the value analyzed may
not have pointer type.  In particular, it may
be the condition argument for a select or a GEP
index.  While I was unable to construct a testcase
for which some bits of the original pointer are
captured due to one of these, it's very very close
to being possible - so play safe and exclude these
possibilities.

llvm-svn: 61580
2009-01-02 15:16:38 +00:00
Duncan Sands
c087ba24aa When calculating 'nocapture' argument attributes, allow
the argument to be stored to an alloca by tracking uses
of the alloca.  This occurs 4 times (out of 7121, 0.05%)
in MultiSource/Applications, so may not be worth it.  On
the other hand, it is easy to do and fairly cheap.  The
functions it helps are: W_addcom and W_addlit in spiff;
process_args (argv) in d (make_dparser); ercPixConcealIMB
in JM/ldecod.

llvm-svn: 61570
2009-01-02 11:54:37 +00:00
Duncan Sands
4cad820632 Improve comments and reorganize a bit - no functionality
change.

llvm-svn: 61569
2009-01-02 11:46:24 +00:00
Chris Lattner
f90c958115 Fix a really horrible typo, which caused undefined behavior.
llvm-svn: 61566
2009-01-02 08:49:06 +00:00
Chris Lattner
1af2113e10 minor cleanups and comment improvements.
llvm-svn: 61564
2009-01-02 08:05:26 +00:00
Chris Lattner
2950e29626 add a #include to hopefully get the x86-64-linux buildbot building.
llvm-svn: 61563
2009-01-02 07:18:46 +00:00
Chris Lattner
2d37a9be23 update the cmakefile. This is a "best guess", I haven't tested this.
llvm-svn: 61561
2009-01-02 07:14:23 +00:00
Chris Lattner
f28c74870f Reimplement the old and horrible bison parser for .ll files with a nice
and clean recursive descent parser.

This change has a couple of ramifications:
1. The parser code is about 400 lines shorter (in what we maintain, not
   including what is autogenerated).
2. The code should be significantly faster than the old code because we 
   don't have to work around bison's poor handling of datatypes with 
   ctors/dtors.  This also makes the code much more resistant to memory 
   leaks.
3. We now get caret diagnostics from the .ll parser, woo.
4. The actual diagnostics emited from the parser are completely different
   so a bunch of testcases had to be updated.
5. I now disallow "%ty = type opaque %ty = type i32".  There was no good
   reason to support this, it was just an accident of the old 
   implementation.  I have no reason to think that anyone is actually using
   this.
6. The syntax for sticking a global variable has changed to make it 
   unambiguous.  I don't think anyone is depending on this since only clang
   supports this and it is not solid yet, so I'm not worried about anything
   breaking.
7. This gets rid of the last use of bison, and along with it the .cvs files.
   I'll prune this from the makefiles as a subsequent commit.

There are a few minor cleanups that can be done after this commit (suggestions
welcome!) but this passes dejagnu testing and is ready for its time in the
limelight.

llvm-svn: 61558
2009-01-02 07:01:27 +00:00
Evan Cheng
c52f942d67 Do not isel load folding bt instructions for pentium m, core, core2, and AMD processors. These are significantly slower than a load followed by a bt of a register.
llvm-svn: 61557
2009-01-02 05:35:45 +00:00
Evan Cheng
f460ec040c Fix x86 CPU id detection to identify Penryn (and future processors).
llvm-svn: 61556
2009-01-02 05:29:20 +00:00
Evan Cheng
57115c1887 Use movaps / movd to extract vector element 0 even with sse4.1. It's still cheaper than pextrw especially if the value is in memory.
llvm-svn: 61555
2009-01-02 05:29:08 +00:00
Nick Lewycky
6c53fbb21d Make adding nocapture a bit stronger. FreeInst is nocapture. Also,
functions that don't write can't leak a pointer except through 
the return value, so a void readonly function is implicitly nocapture.

Test these, and add a test that verifies that f1 calling f2 with an 
otherwise dead pointer gets both of them marked nocapture.

llvm-svn: 61552
2009-01-02 03:46:56 +00:00
Duncan Sands
e4fd98d306 Mention that this pass does escape analysis in the
leading comments.

llvm-svn: 61548
2009-01-01 20:45:19 +00:00
Duncan Sands
0fca32114b Factorize (and generalize) the code promoting SELECT
and BRCOND conditions.  Reorder a few methods while
there.

llvm-svn: 61547
2009-01-01 20:36:20 +00:00
Duncan Sands
07002edaca Remove trailing spaces.
llvm-svn: 61545
2009-01-01 19:56:02 +00:00
Duncan Sands
190d6bc636 Fix PR3274: when promoting the condition of a BRCOND node,
promote from i1 all the way up to the canonical SetCC type.
In order to discover an appropriate type to use, pass
MVT::Other to getSetCCResultType.  In order to be able to
do this, change getSetCCResultType to take a type as an
argument, not a value (this is also more logical).

llvm-svn: 61542
2009-01-01 15:52:00 +00:00
Bill Wendling
779f2e1702 Fix comment.
llvm-svn: 61538
2009-01-01 01:19:59 +00:00
Bill Wendling
efbe8b808c Add transformation:
xor (or (icmp, icmp), true) -> and(icmp, icmp)

This is possible because of De Morgan's law.

llvm-svn: 61537
2009-01-01 01:18:23 +00:00
Duncan Sands
e112cf52cb Look through phi nodes and select instructions when
calculating nocapture attributes.

llvm-svn: 61535
2008-12-31 20:21:34 +00:00
Duncan Sands
03192120cc Don't analyze arguments already marked 'nocapture'.
llvm-svn: 61532
2008-12-31 18:08:59 +00:00
Duncan Sands
36db5853cb Rename AddReadAttrs to FunctionAttrs, and teach it how
to work out (in a very simplistic way) which function
arguments (pointer arguments only) are only dereferenced
and so do not escape.  Mark such arguments 'nocapture'.

llvm-svn: 61525
2008-12-31 16:14:43 +00:00
Owen Anderson
ccde9db05a Get live interval reconstruction several steps closer to working.
llvm-svn: 61514
2008-12-31 02:00:25 +00:00
Chris Lattner
1cfa9f47db add a note
llvm-svn: 61513
2008-12-31 00:54:13 +00:00
Scott Michel
cdcae67887 - Start moving target-dependent nodes that could be represented by an
instruction sequence and cannot ordinarily be simplified by DAGcombine
  into the various target description files or SPUDAGToDAGISel.cpp.

  This makes some 64-bit operations legal.

- Eliminate target-dependent ISD enums.

- Update tests.

llvm-svn: 61508
2008-12-30 23:28:25 +00:00
Bill Wendling
067c48f7a6 Linux wants the FDE initial location and address range to be forced to 32-bit.
Darwin doesn't. Make this optional for platforms.

llvm-svn: 61484
2008-12-29 22:12:11 +00:00